manuale tecnico inglese prova 1 - atmopomiar sp. z o.o
TRANSCRIPT
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Indice 1 Outdoor Unit (mod. 8 – 10 – 13 HP) ................ .............................................................................................. 5
1.1 Technical specifications ...................................................................................................................... 6
1.2 External dimensions ........................................................................................................................... 7
1.3 Allowed temperature range ................................................................................................................ 8
1.4 Noise level charateristics.................................................................................................................... 9
1.5 Space required for installation .......................................................................................................... 12
1.6 Outline diagram of refrigerant piping ................................................................................................ 14
1.7 Refrigerant piping installation specifications .................................................................................... 14
1.8 Refrigerant piping – Selecting branches and permissible lengths ................................................... 15
1.9 Refrigerant charging ......................................................................................................................... 20
1.10 Note for branch piping ...................................................................................................................... 21
1.11 How to extend exhaust pipe ............................................................................................................. 22
1.12 Summary of electric wiring installation ............................................................................................. 24
1.12.1 Opening for power supply wires / signal wires ........................................................................ 24
1.12.2 Wiring example (AC 230 V single phase) ................................................................................ 25
1.13 Power supply wiring procedure ........................................................................................................ 26
1.13.1 Wiring instruction ..................................................................................................................... 26
1.13.2 Wiring lenght ............................................................................................................................ 27
1.13.3 Branch wiring ........................................................................................................................... 28
1.14 Various function settings .................................................................................................................. 29
2 Outdoor unit (mod. 16 – 20 – 25 HP) ............... ............................................................................................ 30
2.1 Specifiche tecniche ........................................................................................................................... 31
2.2 External dimensions ......................................................................................................................... 32
2.3 Allowed temperature range .............................................................................................................. 33
2.4 Noise level charateristics.................................................................................................................. 34
2.5 Space required for installation .......................................................................................................... 37
2.6 Combinations and capacities of the outdoor units and indoor units ................................................. 39
2.6.1 Stand-alone installation ........................................................................................................... 39
2.6.2 Combined installation .............................................................................................................. 39
2.7 Outline diagram of refrigerant piping ................................................................................................ 40
2.7.1 Combined installation .............................................................................................................. 40
2.7.2 Stand-alone installation ........................................................................................................... 41
2.8 Refrigerant piping installation specifications .................................................................................... 42
2.8.1 Combined installation .............................................................................................................. 42
2.8.2 Stand-alone installation ........................................................................................................... 42
2.8.3 Reducer selection for combined installation ............................................................................ 43
2.9 Refrigerant piping – Selecting branch pipes and permissible lengths ............................................. 46
2.9.1 Combined installation .............................................................................................................. 46
2.9.2 Stand alone installation ............................................................................................................ 50
2.10 Refrigerant charging ......................................................................................................................... 55
2.10.1 Refrigerant charging amount ................................................................................................... 55
2.10.2 Refrigerant charging method ................................................................................................... 55
2.11 Notes for branching piping ............................................................................................................... 56
2.12 How to extend exhaust pipe ............................................................................................................. 57
2.13 Power supply wiring procedure ........................................................................................................ 59
2.13.1 Wiring instruction combined installation .................................................................................. 59
2.13.2 Wiring instruction stand-alone installation ............................................................................... 60
2.14 Summary of electric wiring installation ............................................................................................. 61
2.14.1 Opening for power supply wires / signal wires ........................................................................ 61
2.14.2 Wiring example (AC 230V single phase) ................................................................................. 62
2.14.3 Direct expansion indoor unit system wiring (AC 230V single phase) ...................................... 63
2.14.4 Air water system wiring (AC 230V single phase) ................................................................... 63
2.15 Wiring length .................................................................................................................................... 64
2.16 Branch wiring .................................................................................................................................... 65
2.17 Various function setting .................................................................................................................... 66
Specifications, drawings and general information within this manual are subject to change without notice.
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1 Outdoor Unit (mod. 8 – 10 – 13 HP)
8 HP – AXGP224E1 [N – P] [NATURAL GAS – LPG]
10 HP – AXGP280E1 [N – P] [NATURAL GAS – LPG]
13 HP – AXGP335E1 [N – P] [NATURAL GAS – LPG]
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1.1 Technical specifications
Model AXGP224E1 AXGP280E1 AXGP355E1
8 HP 10 HP 13 HP
Performace
Rated cooling capacity* 100%
kW
22,4 28,0 35,5
50% 11,2 14,0 17,8
Rated heating capacity** 100% 25,0 31,5 40,0
50% 12,4 15,5 20,2
Maximum heating capacity*** 26,5 33,5 42,5
Fuel gas
Type Natural gas G20 Natural gas G25
LPG
Rated cooling consumption* 100%
kW
15,0 19,2 26,4
50% 7,4 8,0 9,9
Rated heating consumption** 100% 15,9 20,3 27,0
50% 8,3 9,6 11,7
Maximum heating consumption*** 21.7 27.5 36,6
Electricity
Power supply V AC 230 single phase
Starting current A 20
Rated consumption / Current Cooling
kW/[A] 0,34 / [1,4] 0,42 / [1,8]
0,44 / [1,9] 0,58 / [2,5]
0,57 / [2,4] 0,74 / [3,2] Heating
Engine
Type Water cooled vertical type, 3 cylinders, 4 strokes
Displacement cm3 952
Rated mechanical output kW 5,0 6,2 7,9
Revolution range Cooling
rpm 800~1.250 800~2.450
800~1.550 800~2.900
800~2.000 800~2.900 Heating
Compressor Type x numbers of units Variable capacity scroll x 2
Transmission Poli V belt
Refrigerant Type R410A
Factory charge Kg 11,0
Fans
Type x numbers of units Variable speed propeller type x 2
Rated total flow rate m3 / h 10.020 11.640 12.780
Static pressure: standard – [silent mode] Pa 5 – [30]
Noise level Sound pressure : standard – [silent mode] dB(A) 54 – [52] 56 – [52] 59 – [57]
Piping
Refrigerant Gas line
mm Ø 19,1 Ø 9.5
Ø 22,2 Ø 9.5
Ø 25,4 Ø 12.7 Liquid line
Fuel gas inch R 3 / 4
Exhaust gas mm
Ø 80
Exhaust drain: standard – [cold district] Ø 15 – [Ø 30]
Piping permissible length: actual / equivalent – [AWS]
m
165 / 190 – [70 / 60]
Max. distance after the first branch 60
Max. height difference between indoor units 15
Max. height difference between indoor and outdoor units – [AWS] + 50 / - 40 – [+25 / - 20]
External dimensions
Height
mm
2.077
Width 1.400
Depth 880
Weight: standard – [cold district] Kg 565 – [570]
Connectable indoor units Number: standard – [cold district] 20 – [13] 25 – [16] 32 – [20]
Capacity: standard – [cold district] % 50 – 200 / [50 – 130]
Maintenance Scheduled maintenance interval
h 10.000
Engine oil replacement 30.000
Special models: Cold district (F): outdoor temp lower than – 10°C /AWS (A): outdoor unit connectable with AWS / W-kit (K): built-in domestic hot water version
*Outdoor temp. 35°C (DB) – indoor temp. 27°C (DB) / ** Outdoor temp 7°C (DB) – indoor temp. 20°C (DB) / ***Outdoor temp. 2°C (DB) – indoor temp. 20°C (DB)
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1.2 External dimensions
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1.3 Allowed temperature range
Cooling
Heating
30
16
-20 21
Temperatura aria esterna [°C]
Tem
pera
tura
aria
inte
rna
[°C
]
Campo di applicazione in riscaldamento
Kit zone fredde
-20 -10 0 10 20
10
20
3030
16
-20 21
Temperatura aria esterna [°C]
Tem
pera
tura
aria
inte
rna
[°C
]
Campo di applicazione in riscaldamento
Kit zone fredde
-20 -10 0 10 20
10
20
30
� All measurements are expressed as dry bulb
Note Scale temperature setting on the remote control
Limite
superiore Limite
inferiore
Cooling. 35°C 20°C
Heating 30°C 15°C
Indo
or te
mpe
ratu
re (
°C)
Indo
or te
mpe
ratu
re (
°C)
Outdoor t emperature (°C)
Outdoor temperature (°C)
Allowed cooling mode temperature range
Allowed heating mod e temperature range
Cold district
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1.4 Noise level charateristics
Global values (dB(A)/m)
Model Front Rear Right Left
AXGP224E1 N-P 54 53 49 50
Detection status:
� Semi-anechoic room � Distance 1 m � Height 1 m
Front
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Noise level charateristics
Global values (dB(A)/m)
Model Front Rear Right Left
AXGP280E1 N-P 56 56 52 53
Detection status:
� Semi-anechoic room � Distance 1 m � Height 1 m
Front
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Noise level charateristics
Global values (dB(A)/m)
Model Front Rear Right Left
AXGP355E1 N-P 59 59 54 55
Detection status:
� Semi-anechoic room � Distance 1 m � Height 1 m
Front
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1.5 Space required for installation
1) Provide sufficient distance from flammable materials
Install the outdoor unit in the proper distance fro m flammable items as required by the rel- evant local and national regulations, and technical standards. (See the reference below.) If the distance does not meet the requirements, it could result in a fire.
WARNING D
ISTA
NC
E F
RO
M F
LAM
MA
BLE
MA
TE
RIA
LS (
MM
)
FR
ON
T
FR
ON
T
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2) Installation space
Provide ample space for inspection and maintenance taking into account the refrigerant and fuel gas piping.
� The following drawings show the minimum installatio n space for providing room for intake air and inspection and maintenance operation s. Insufficient space could result in injury to the maintenance personnel or damage to the equipment
CAUTION
FR
ON
T
* F
RO
NT
MU
LTIP
LE U
NIT
INS
TALL
AT
ION
* F
RO
NT
* T
HIS
SP
AC
E M
US
T B
E 8
00 M
M O
R M
OR
E W
HE
N T
HE
SN
OW
HO
OD
IS M
OU
NT
ED
MIN
IMU
M D
ISTA
NC
E F
RO
M S
OR
RO
UN
DIN
G O
BJE
CT
S (
MM
)
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1.6 Outline diagram of refrigerant piping
1.7 Refrigerant piping installation specifications
Outdoor Unit
Item
Refrigerant main piping diameter (mm)
Permissible piping length (m)
Equivalent length/ Actual length
Permissible height difference (m)
Refrigerant oil
Vapor line
Liquid line Outdoor unit is
higher
Outdoor
unit is lower
P224 ø19.1
*1(ø22.2) ø9.5
*1(ø12.7)
190 /165
*2 50 40 NL10
P280
ø22.2 *1(ø25.4)
ø9.5 *1(ø12.7)
P355
ø25.4 *1(ø28.6)
ø12.7 *1(ø15.9)
ATTENTION
∗ If the piping length exceeds 100 m, install pipes larger by one rank specified in ( ).
∗∗ When total capacity of connected indoor unit exceeds 130 % of rated capacity, restrict the permissible piping length (actual length) to 100 m or less.
Refrigerant liquid pipe (brazing)
Brazing connections
Indoor unit Indoor unit
Branch pipes or helders (sold separatly)
Outdoor unit
Fuel gas pipe R ¾’’
Refrigerant capor line (brazing)
Condensation water drain port Exhaust gas water drain port
Flare connections
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1.8 Refrigerant piping – Selecting branches and per missible lengths
� Piping specifications (Use the following pipes)
• Piping material: Phosphate deoxidized copper seamless air-conditioning pipe JIS H3300, C1220T (Japanese technical standard) or equivalent.
• Refrigerant pipe specifications: Outer diameter × thickness (mm) ø 6.4 × 0.8 ø 9.5 × 0.8 ø 12.7 × 0.8 ø 15.9 × 1.0 ø 19.1 × 1.0 ø 22.2 × 1.0 ø 25.4 × 1.0 ø 28.6 × 1.0 ø 31.8 × 1.1 ø 38.1 × 1.35
(1) 【Main piping 】Between outdoor unit and first branch (A on the fig ure)
Outdoor unit P224 P280 P355 Vapor line (mm) Ø 19.1 Ø 22.2 Ø 25.4 Liquid line (mm) Ø 9.5 Ø 12.7
(2) Main piping 】Between outdoor unit and first branch (A on the fig ure)
Total capacity of downstream indoor units (kW)
fino a 22.4kW
da 22.4kW a 33.0kW
da 33.0kW a 47.0kW
da 47.0kW a 71.0kW
da 71.0kW o più
Vapor line (mm) Ø 15.9 Ø 22.2 Ø 28.6 Ø 31.8 Liquid line (mm) Ø 9.5 Ø 12.7 Ø 15.9 Ø 19.1
(3) Piping between branch and indoor unit (a, b, c, d, e and f on the figure)
Indoor unit P22, 28, 36, 45, 56 P71, 80, 90, 112, 140 P224 P280 Vapor line (mm) Ø 12.7 Ø 15.9 Ø 19.1 Ø 22.2 Liquid line (mm) Ø 6.4 Ø 9.5
• Make sure that total extension refrigerant piping l enght is 520 m. or less. • If the refrigerant piping equivalent length exceeds 100 m, use pipes with diameters larger by
one rank indicated in “4-3. Refrigerant piping installation specifications“ on the previous page for the main liquid and vapor piping. Example: ø 12.7 → ø 15.9.
• This unit uses R410A. Limit pressure of O material pipe with ø 19.1 diameter or larger is insufficient. Be sure to use 1/2H or H material pipes with minimum thickness or thicker. For ø 19.1 pipe only, however, as long as the thickness is 1.05 mm or greater, O materials can be used.
• Method of refrigerant piping can be selected from line branching, header branching, and line-header combined branching. Select the proper method according to the layout of indoor units.
• Refrigerant piping length and the height difference between indoor units should be arranged as short as possible.
• Re-branching after the header branching is not allowed.
CAUTION
Outdoor unit
First branch
Indoor Unit 1
Indoor Unit 2
Indoor Unit 3
Indoor Unit 4
Indoor Unit 5
Indoor Unit 6
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� Selecting branch piping and permissible piping leng th
Line branching
Layout example
(When 6 indoor units are connected)
Note: If there is a height differen- ce between the locations of
indoor and outdoor units, apply a small “trap pipes” only on the vapor line at least every 10 m as
illustrated.
10 m10 m
Permissible piping length
Maximum piping length (L)* (Equivalent length / Actual length) A + B + C + D + E + f 190/165m or less
Maximum piping length after the first branch B + C + D + E + f 60 m or less
Piping length difference after the first branch (when A is shortest length after the first branch) l – a 40 m or less
Permissible height
difference
Height difference between indoor and outdoor unit (H)
When outdoor unit is higher than indoor unit
50 m or less
When outdoor unit is lower than indoor unit
40 m or less
Height difference between indoor units (h) 15 m or less
Bra
nch
pipi
ng
How to select the branch piping kit
* When total capacity of connected indoor unit exceeds 130% of rated capacity, restrict the permissible piping length (actual length) to 100 m.
CAUTION
In the c ase of h eader b ranching or lin e-header combined b ranching, ind oor units with c apacity of P280 or larger cannot be connected after the header branching (c, d, e or f in the right figure). Connect the indoor units with capacity of P280 or la rger to line branching (a or b in the right figure) .
Important remider
� Be sure to use the indoor unit piping and indoor branch piping that correspond to the indoor unit connecting piping size.
� Always install the branch piping joint (both for vapor and liquid) so that the joint branches either horizontally or vertically.
� Refer to the following table to select the branch piping kit because the size of branching pipe varies depending on the total capacity of connected indoor units (total capacity of the downstream indoor units).
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Header branching
Layout example
(When 6 indoor units are connected)
Note: If there is a height differen- ce between the locations of indoor and outdoor units, apply a small
“trap pipes” only on the vapor line at least every 10 m as illustrated.
10 m10 m
Permissible piping length
Maximum piping length (L)* (Equivalent length / Actual length) A + f 190/165m or less
Maximum piping length after the first branch f 60 m or less
Piping length difference after the first branch (when A is shortest length after the first branch) l – a 40 m or less
Permissible height
difference
Height difference between indoor and outdoor unit (H)
When outdoor unit is higher than indoor unit 50 m or less
When outdoor unit is lower than indoor unit 40 m or less
Height difference between indoor units (h)
15 m or less
Bra
nch
pipi
ng
How to select the branch piping kit
* When total capacity of connected indoor unit exceeds 130% of rated capacity, restrict the permissible piping length (actual length) to 100 m.
Important remider
� Be sure to use the indoor unit piping and indoor branch piping that correspond to the indoor unit connecting piping size.
� Always install the branch piping joint (both for vapor and liquid) so that the joint branches either horizontally or vertically.
� Re-branching after the header branching is not allowed. Besides, the indoor unit with capacity of P280 or larger can not be connected after the header branching
� Connect crimp piping (locally procured) to the branching points (on the indoor unit connection side) in accordance with the number of connection indoor units.
� Refer to the header branching kit (sold separately) for the crimp piping size.
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Line – Header combined branching
Layout example
(When 6 indoor units are connected)
Note: If there is a height differen- ce between the locations of indoor and outdoor units, apply a small
“trap pipes” only on the vapor line at least every 10 m as illustrated.
10 m10 m
Permissible piping length
Maximum piping length (L)* (Equivalent length / Actual length) A + B + C + f 190/165m or less
Maximum piping length after the first branch f 60 m or less
Piping length difference after the first branch (when A is shortest length after the first branch) l – a 40 m or less
Permissible height
difference
Height difference between indoor and outdoor unit (H)
When outdoor unit is higher than indoor unit 50 m or less
When outdoor unit is lower than indoor unit 40 m or less
Height difference between indoor units (h)
15 m or less
Bra
nch
pipi
ng
How to select the branch piping kit
* When total capacity of connected indoor unit exceeds 130% of rated capacity, restrict the permissible piping length (actual length) to 100 m.
Important remider
� Be sure to use the indoor unit piping and indoor branch piping that correspond to the indoor unit connecting piping size.
� Always install the branch piping joint (both for vapor and liquid) so that the joint branches either horizontally or vertically.
� Refer to the following table to select the branch piping kit because the size of branching pipe varies depending on the total capacity of connected indoor units (total capacity of the downstream indoor units).
How to select the header piping kit
� Connect crimp piping (locally procured) to the branching points (on the indoor unit connection side) in accordance with the number of connecting indoor units.
� Refer to the header branching kit (sold separately) for the crimp piping size.
Important remider
� Be sure to use the indoor unit piping and indoor branch piping that correspond to the indoor unit connecting piping size.
� Always install the branch piping joint (both for vapor and liquid) so that the joint branches either horizontally or vertically.
� Re-branching after the header branching is not allowed. Besides, the indoor unit with capacity of P280 or larger can not be connected after the header branching
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AWS line connection
Layout example
(When AWS is connected)
Note: If there is a height differen- ce between the locations of indoor and outdoor units, apply a small “trap pipes” only on the vapor line at least
every 10 m as illustrated.
10 m
Permissible piping length
Maximum piping length (L) (Equivalent length / Actual length) L = A 70/60m or less
Permissible height
difference
Height difference between AWS unit and outdoor unit (H)
When outdoor unit is higher than indoor unit
50 m or less
When outdoor unit is lower than indoor unit
40 m or less
ATTENTION
Never exceed the maximum allowed distance between A WS and GHP. Failure in doing so can result in malfunctioning of the units and invalidat es the warranty.
WARNING
• Always refer to AWS installation manual for maintena nce clearence and position of the unit.
• Always connect the AWS to the designed outdoor unit for AWS.
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1.9 Refrigerant charging
ATTENTION
• When charging the refrigerant, accurately measure t he length of the piping and charge
the proper amount of refrigerant. If the amount of refrigerant is not proper, performance will decline or a breakdown could occur.
• After completion of refrigerant charging, write dow n the installation record on the plate “POINTS FOR INSTALLATION” inside the outdoor unit con trol box panel. Besides, calculate the refrigerant amount for the whole syst em and write down the amount on the plate. Calculation formula is shown on the plate. ( Write with a permanent marker so that the record does not disappear easily.)
1) Refrigerant charging amount. Always check the refrigerant gas factory charge on the unit label before calculating the amount to be added. Calculate the amount of refrigerant to be charged according to the following formula and liquid piping length for each size of the piping.
When the GHP is connected to YOSHI AWS E1:
Charge amount (kg) = (L1 × 0.353) + (L2 × 0.250) + (L3 × 0.170) + (L4 × 0.110) + (L5 × 0.054)
+ (L6 x 0.022) + Q AWS
When the GHP is connected to direct expansion indoor units:
Charge amount (kg) = (L1 × 0.353) + (L2 × 0.250) + ( L3 × 0.170) + (L4 × 0.110) + ( L5 × 0.054)
+ (L6 x 0.022) + Q de
Type or indoor system Qde [kg] Qaws [kg]
Direct expansion single unit 0,0 -
Direct expansion multiple indoor unit 1,0 -
Direct expansion air handling unit AHU Refer to manufacturer specification -
Air water system YOSHI AWS E1 - 0,0
2) Refrigerant charging method
• Always charge the refrigerant as a liquid in the tank. Charging as
a vapor may cause a compositional change of the refrigerant, and could result in a performance decline or a breakdown.
• Always use a refrigerant scale when charging the refrigerant. using a charging cylinder may cause a compositional change of the refrigerant, and could result in a performance decline or a breakdown.
• To avoid cross-contamination with other oils types, make sure to separate maintenance tools according to the type of refrigerant used. In particular, never use the gauge manifold and charging hose with other refrigerants (R22, R407C etc.)
CAUTION
When charging the refrigerant, be sure to wear a pa ir of leather gloves. If the refrigerant touches your skin directly, it may cause a frostbite.
L1: Liquid pipe Ø 22.2 total length (m) L2: Liquid pipe Ø 19.1 total length (m) L3: Liquid pipe Ø 15.9 total length (m)
L4: Liquid pipe Ø 12.7 total length (m) L5: Liquid pipe Ø 9.5 total length (m) L6: Liquid pipe Ø 6.4 total length (m)
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1.10 Note for branch piping
• Always install line branch pipes to make either “vertical branching” or “horizontal branching” for both vapor and liquid lines.
Horizontal Vertical
• Always install header branch pipes to make “horizontal branching” for both vapor and liquid lines.
REMIND
When connecting the branch pipe, do not bend the main pipe near the connection. If such bending is unavoidable, provide a minimum of 150 mm of straight portion. However, do not use a bent pipe with an external diameter of Ø 28.6 or larger.
Orizzontale
Vapor line
Liquid line
• Do not perform another braching after header branching.
• When performing header branching, connect the crimpt pipe (locally procured) in accordance with the number of indoor units
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1.11 How to extend exhaust pipe • Use stainless steel or polymer section pipes with a diameter of 80 mm for exhaust pipe extension. • Make sure the pipes for extension can withstand temperatures up to 120° and acid condensed water.
ATTENTION
• Do not extend the exhaust pipe to a location where the exhaust gas could potentially enter the indoors. If the exhaust pipe is extended to near the intake/exhaust port to the room, window or ventilation port, the exhaust gas could flow into the room and cause gas poisoning or an accident due to lack of oxygen.
• Do not extend the exhaust pipe to an area where fla mmable gas can be produced, flow into, accumulate or leak, or where volatile flammab le materials can be treated. Extension to such locations could result in a fire or an explosion.
• Be sure to discharge the exhaust gas directly to an outdoor area open to the atmosphere. Accumulated exhaust gas could cause gas poisoning or an accident due to lack of oxygen. Install the outdoor unit where adequate ventilation is provided.
• Be sure to discharge the exhaust gas to the atmosph ere where the gas causes no adverse effect to the surroundings. If the exhaust gas is exhausted into the catch basin or ditch, it could be drawn into the room and cause gas poisoning or an accident due to lack of oxygen.
• Be sure to discharge the exhaust gas to a location where the exhaust gas is not directed toward animals or plants. Exposure to the exhaust gas or discharge air could have harmful influence on animals or plants.
• Be sure to maintain the appropriate clearance from the flammable or flame resistant material covering building in accordance with the f ollowing figure. Inadequate clearance could cause a fire.
Distance from the exhaust pipe must be as follows:
Distance from the top end opening of the exhaust pipe must be as follows:
Try to avoid extending the exhaust pipe in areas where the outside temperature falls to 0 Cº or less because the inside of the exhaust pipe may freeze.
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Extended the exhaust pipe according to the following procedure by referring to the figure below.
1. Remove the exhaust top from the outdoor unit exhaust port.
2. Connect the extra sections sequentially from the outdoor unit side, and extend the exhaust pipe to the desired position following the restriction below.
• Total length of the exhaust pipe extension shall not exceed 15 m. • Total number of exhaust pipe bends (bending angle = 90 °) shall not exceed 5 (each equivalent
length 1m). • The extended pipe shall be anchored to the building or similar structure with fixing brackets every
1.5 to 2 m. • The exhaust pipe shall not be gathered or connected with the other exhaust pipe.
2. Attach the exhaust top at th outlet of the extended exhaust pipe paying attention to the following:
• The angle of the exhaust vent plane shall be vertical to the ground by adjusting the elbow pipes so
that rainwater may not enter the exhaust pipe directly. • Apply silicone caulking material at the lower part of the metal mesh in accordance with the following
figure so that the drain water may not drip from the exhaust top. (Refer to the figure below.)
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1.12 Summary of electric wiring installation
ATTENTION
• Use a dedicated branch circuit. Never use the outdo or unit with other appliances on the
same circuit. If the outdoor unit and other appliances are used on the same circuit, secondary damage could occur due to breaker tripping.
• All electrical installation work must be performed by a certified electrician in accordance with the relevant local and national reg ulations, technical standards, and instructions provided in this manual.
Improper installation could result in electrical shock, fire or other hazards. • Provide an electric leakage breaker with the specifi ed capacity for each outdoor unit (sensitivity amperage is 30 mA). If the electric leakage breaker is not installed, electrical shock could occur. • Provide an over-current breaker with the specified c apacity for each outdoor unit.
If the proper over-current breaker is not installed, overheating, fire or secondary damage due to the breaker tripping could occur.
• Always use the designated cable for wiring. Make su re that the cable is properly connected and fixed so that the outside forces may not be transferred to the terminal connection. Improper connecting or fixing can result in overheating, fire or other hazards.
• Always ground the unit in accordance with the relev ant technical standards. Improper grounding can result in electrical shock.
• Select an “inverter type” electric leakage breaker t hat will not be affected by high-frequency leakage currents.
1.12.1 Opening for power supply wires / signal wires
Enlarged
Opening for signal wires
Opening for power supply wires
Bundle power supply wires and signal wires to avoid contact with the pipes
25
1.12.2 Wiring example (AC 230 V single phase)
26
1.13 Power supply wiring procedure
1.13.1 Wiring instruction
27
1.13.2 Wiring lenght
The wiring length of indoor-outdoor and outdoor-outdoor signal wires except the wiring of the remote controller must not exceed the following restriction:
• Longest wiring length: 1000 meters
• Total wiring length: 2000 meters
(When using shielded wires, the total wire length is restricted up to 1500 meters.)
SYSTEM EXAMPLE
• In the above system, the longest wiring distance is 900 m between Ⓐ and Ⓒ, which satisfiea the longest wiring length limit of 1000 m. and total length, which is the total 900 m between Ⓐ and Ⓒ, and 200 m between Ⓑ and Ⓓ is 1100 m. this also satisfies the total wiring limit of 2000 m. the system functions properly only when both the longest wiring length and the total wiring length are within the limit as shown above.
CAUTION
• Be sure to check the longest wiring length and the total wiring length at the time of
designing. When the length exceeds the acceptable r estriction range, consider dividing the system or installing a D Ⅲ -NET extension adapter (sold separately) additionally .
28
1.13.3 Branch wiring The following 3 wiring methods are acceptable. • SERIES WIRING
• BUS WIRING (up to 10 branches, re-branching after the branch is not possible)
• STAR WIRING (up to 10 branches, re-branching after the branch is not possible)
Note) Although the above figures show the examples using the centralized controller, the same wiring system can be used with other centralized control devices.
29
1.14 Various function settings
Address setting method of the indoor and outdoor un its
� The address setting of the indoor and outdoor units is performed automatically.
� When the centralised remote control is added, set the group address to the indoor units with the standard remote controller. If the remote controller is not installed provide that the service centre brings a spare one to set the group address on each unit.
30
2 Outdoor unit (mod. 16 – 20 – 25 HP)
16 HP – AWGP450E1 [N – P] [NATURAL GAS – LPG]
20 HP – AWGP560E1 [N – P] [NATURAL GAS - LPG]
25 HP – AWGP710E1 [N – P] [NATURAL GAS - LPG]
31
2.1 Specifiche tecniche
Model AWGP450E1 AWGP560E1 AWGP710E1
16 HP 20 HP 25 HP
Performance
Rated cooling capacity* 100%
kW
45,0 56,0 71,0
50% 22,5 28,0 35,5
Rated heated capacity** 100% 50,0 63,0 80,0
50% 24,7 30,9 40,0
Maximum heating capacity*** 53,0 67,0 84,0
Fuel gas
Type Natural gas G20 Natural gas G25
LPG
Rated cooling consumption* 100%
kW
31,0 40.7 55,1
50% 12.4 16,0 19,6
Rated heating consumption** 100% 31.7 42,0 53,6
50% 13,5 17,0 22,1
Maximum heating consumption*** 41.4 54 68.9
Electricity
Power supply V AC 230 single phase
Starting current A 20
Rated consumption / Current Cooling
kW/[A] 1,06 / [4,6] 1,02 / [4,4]
1,10 / [4,8] 1,02 / [4,4]
1,37 / [5,9] 1,18 / [5,1] Heating
Engine
Type Water cooled vertical type, 4 cylinders, 4 stroke
Displacement cm3 1.998
Rated mechanical output kW 10,0 12,4 15,7
Revolution range Cooling
rpm 600~1.800 600~2.500
600~1.950 600~2.800
600~2.275 600~3.000 Heating
Compressor Type x numebers of units Variable capacity scroll x 2
Transmission Poli V belt
Refrigerant Type R410A
Factory charge kg 11,5
Fans
Type x numbers of units Variable speed propeller type x 2
Rated total flow rate m3 / h 20.760 23.280
Static pressure: standard – [silent mode] Pa 5 – [30]
Noise level Sound pressure: standard – [silent mode] dB(A) 56 – [54] 59 – [57] 62 – [60]
Piping
Refrigerant Gas line
mm Ø 28,6 Ø 15,9
Ø 28,6 Ø 15,9
Ø 31,8 Ø 15,9 Liquid line
Fuel gas inch R 3 / 4
Exhaust gas mm
Ø 100
Exhaust drain: standard – [cold district] Ø 15 – [Ø 30]
Piping permissible length: actual / equivalent [AWS]
m
165 / 190 – [70 / 60]
Max. distance after the first branch 60
Max. distance between combination multi units: horizontal/vertical 10 / 4
Max. heigth difference between indoor units 15
Max. heigth difference between indoor and outdoor units – [AWS] + 50 / - 40 – [+25 / - 20]
External dimensions
Height
mm
2.077
Width 1.660
Depth 880
Weight: standard – [cold district] Kg 735 – [740] 755 – [760]
Connectable indoor units Number: standard – [cold district] 40 – [26] 50 – [33] 63 – [41]
Capacity: standard – [cold district] % 50 – 200 / [50 – 130]
Maintenance Scheduled manitenance interval
h 10.000
Engine oil replacement 30.000
Special models: Cold district (F): outdoor temp lower than – 10°C /AWS (A): outdoor unit connectable with AWS / W-kit (K): built-in domestic hot water version
*Outdoor temp. 35°C (DB) – indoor temp. 27°C (DB) / ** Outdoor temp 7°C (DB) – indoor temp. 20°C (DB) / ***Outdoor temp. 2°C (DB) – indoor temp. 20°C (DB)
32
2.2 External dimensions
33
2.3 Allowed temperature range
Cooling
Heating
30
16
-20 21
Temperatura aria esterna [°C]
Tem
pera
tura
aria
inte
rna
[°C
]
Campo di applicazione in riscaldamento
Kit zone fredde
-20 -10 0 10 20
10
20
3030
16
-20 21
Temperatura aria esterna [°C]
Tem
pera
tura
aria
inte
rna
[°C
]
Campo di applicazione in riscaldamento
Kit zone fredde
-20 -10 0 10 20
10
20
30
� All measurements are expressed as dry bulb
Note Scale temperature setting on the remote control
Limite
superiore Limite
inferiore
Cooling. 35°C 20°C
Heating 30°C 15°C
Indo
or te
mpe
ratu
re (
°C)
Indo
or te
mpe
ratu
re (
°C)
Outdoor temperature (°C)
Outdoor temperature ( °C)
Allowed cooling mode temperature range
Allowed heating mod e temperature range
Cold district
34
2.4 Noise level charateristics
Global values (dB(A)/m)
Model Front Rear Right Left
AWGP450E1 N-P 56 58 55 56
Detection status:
� Semi-anechoic room � Distance 1 m � Height 1 m
35
Noise level charateristics
Global values (dB(A)/m)
Model Front Rear Right Left
AWGP560E1 N-P 59 60 56 59
Detection status:
� Semi-anechoic room � Distance 1 m � Height 1 m
36
Noise level charateristics
Global values (dB(A)/m)
Model Front Rear Right Left
AWGP710E1 N-P 62 63 59 62
Detection status:
� Semi-anechoic room � Distance 1 m � Height 1 m
37
2.5 Space required for installation
Provide sufficient distance from flammable materials
Install the outdoor unit in the proper distance fro m flammable item sas required by the relevant local and national regulations, and techni cal standards. (see the reference below) . If the distance does not meet the requirements, it could be result in fire.
WARNING D
ISTA
NC
E F
RO
M F
LAM
MA
BLE
MA
TE
RIA
LS (
MM
)
FR
ON
T
FR
ON
T
38
Installation space
Provide ample space for inspection and maintenance taking into account the refrigerant and fuel gas piping.
The following drawings show the minimum installatio n space for providing room for intake air and inspection and maintenance operation s.
Insufficient space could result in injury to the maintenance personnel or damage to the equipment.
CAUTION
FR
ON
T
* F
RO
NT
MU
LTIP
LE U
NIT
INS
TALL
AT
ION
* F
RO
NT
39
2.6 Combinations and capacities of the outdoor unit s and indoor units
CAUTION
Install the indoor units that correspond to indoor air conditioning load. Otherwise, the units frequently repeat start and st op. That could result in breakdown of the units. The number and total capacity of the connected indo or units must be within the range shown below. Connecting indoor units out of this range could res ult in breakdown.
• In a combination in which the total capacity of the connected indoor units exceeds the capacity of the
outdoor unit, the performance of each indoor unit will be lower than its rated capacity when all indoor units are operated simultaneously. Always strive to keep the total capacity of the indoor units within the outdoor unit capacity.
• Permissible piping length is restricted up to 100 m. (actual length), and total piping length is restricted up to 350 m. when the total capacityof the connected outdoor unit exceeds 130% of rated capacity.
• Connectable indoor units are P22 to P280. • ( ) shows the maximum value for cold district specification.
2.6.1 Stand-alone installation
Outdoor unit Number of connectable indoor units
Total capacity of connectable indoor units (kW)
Multi type
P450 (16HP) 40 (26) 90,0 (58,5)
P560 (20HP) 50 (33) 112,0 (72,8)
P710 (25HP) 63 (41) 142,0 (92,3)
2.6.2 Combined installation
Outdoor units “combination multi”
Number of connectable Indoor units
Total capacity of connectable indoor units (kW)
Multi type
P450 (16HP)+P450 (16 HP) 63 (53) 144,0 (117,0)
P450 (16HP)+P560 (20 HP) 63 (59) 161,6 (131,3)
P450 (16HP)+P710 (25 HP) 63 (63) 185,6 (150,8)
P560 (20HP)+P560 (20 HP) 63 (63) 179,2 (145,6)
P560 (20HP)+P710 (25 HP) 63 (63) 203,2 (165,1)
P710 (25HP)+P710 (25 HP) 63 (63) 227,2 (184,5)
40
2.7 Outline diagram of refrigerant piping
2.7.1 Combined installation
41
2.7.2 Stand-alone installation
42
2.8 Refrigerant piping installation specifications
2.8.1 Combined installation
Outdoor unit
Item Refrigerant piping diameter
(mm)* Permissible piping
length (m)
Equivalent length/Actual length
Permissible height difference (m) Refrigerant
oil Vapor line Liquid line Outdoor
unit is higer Outdoor unit
is lower
Combination multi type
P450 [16HP] ø 28,6
ø 15,9 190/165∗∗ 50 40 NL10 P560 [20 HP] P710
[25 HP] ø 31,8
ATTENTION
∗ Refrigerant piping diameter: from outdoor unit to the Combined Multi connection kit. ∗∗ When total capacity of connected indoor units exceeds 130% of rated capacity, restrict the
permissible piping length (actual length) to 100 m. or less.
2.8.2 Stand-alone installation
Outdoor unit
Item Refrigerant piping diameter
(mm)* Permissible piping
length (m)
Equivalent length/Actual length
Permissible height difference (m) Refrigerant
oil Vapor line Liquid line Outdoor
unit is higer Outdoor unit
is lower
Multi type
P450 [16HP] ø 28,6
(ø 31,8)∗ ø 15,9 (ø 19,1)∗
190/165∗∗ 50 40 NL10 P560
[20 HP] P710
[25 HP] ø 31,8
(ø 38,1)∗
ATTENTION
∗ Refrigerant piping diameter: from outdoor unit to the Combined Multi connection kit. ∗∗ When total capacity of connected indoor units exceeds 130% of rated capacity, restrict the
permissible piping length (actual length) to 100 m. or less.
43
2.8.3 Reducer selection for combined installation
Item Mark Name Specification Remark 16 HP 20 HP 25 HP
Vapor line
A Reducer D.E. 28,6 – D.I. 31,8 Provided with the
outdoor unit
- - ■
B D.I. 31,8 – D.E. 28,6 - - ■
Copper
pipe ø 28,6
Locally procured ■ ■ -
ø 31,8 - - ■
Liquid line C Reducer D.I 15,7 – D.E.12,7
Provided with the outdoor unit
■ ■ ■
Copper
pipe ø 15,9 Localy procured ■ ■ ■
Connection kit
Branches couple
- Optional ■ ■ ■
[Note: ■ means this part is used for the above-mentionedoutdoor unit.] <Precautions for combined installation> • Arrange the refrigerant piping for both liquid and vapor between the outdoor units so that the piping is
level or has upward gradient to prevent the refrigerant oil from accumulating in the piping.
44
• Connect the refrigerant piping between the outdoor units to the stop valve as shown in the following figure A or B. otherwise, the refrigerant oil can accumulate in the piping.
• Be sure to install the Combinetion Multi connection kit “horizontally” for both vapor and liquid line. Assicurarsi di installare il kit combination multi in posizione orizzontale per entrambe le tubazioni del liquido e del gas.
• In case of difference between the GHP, refer to the figures below for the correct positioning of the pipes.
45
• Make strait portion of 660 mm. or more before branching of the Combination Multi connection kit.
• When the piping length from the Combination Multi connection kit to the outdoor uniti s 2 m. or more, make a rising of 200 mm. or more on vapor piping only at location 2 m. or less the Combination Multi connction kit.
46
2.9 Refrigerant piping – Selecting branch pipes and permissible lengths
2.9.1 Combined installation Follow the piping specification shown below when installingnew refrigerant piping. When reusing existing piping, confirm that existing piping meets the pipe specification shown in this manual.
� Piping specifications
• Piping material: Phosphate deoxidized copper seamless air-conditioning pipe JIS H3300, C1220T (Japanese technical standard) or equivalent.
• Refrigerant pipe specifications: Outer diameters x thickness (mm.) • ø 6,4 x 0,8 (O material or OL material) ø 9.5 x 0,8 (O material or OL material)
ø 12,7 x 0,8 (O material or OL material) ø 15,9 x 1,0 (O material or OL material) ø 19,1 x 1,0 (1/2 H or H material)* ø 22,2 x 1,0 (1/2 H or H material)
ø 25,4 x 1,0 (1/2 H or H material) ø 28,6 x 1,0 (1/2 H or H material) ø 31,8 x 1,1 (1/2 H or H material) ø 38,1 x 1,35 (1/2 H or H material)
*For ø 19,1 pipe only, as long as the thickness is 1,05 mm. or greater, O materials can be used.
NOTE) Refrigerant piping diamenter must not exceed the outdoor unit main piping diamenter.
(1) Piping between outdoor unit and kit combination multi (segments X, Y) Outdoor unit P450 P560 P710 Vapor line (mm.) Ø 28,6 Ø 31,8 Liquid line (mm.) Ø 15,9
(2) Piping between kit combination multi and first branc h (segment A) [*L > 100 m] Total capacity of outdoor units (kW) 90,0 – 142,0 Vapor line (mm.) Ø 31,8 Liquid line (mm.) Ø 19,1 (Ø 22,2)*
(3) Piping between branches (segments B, C, D, E)
Total capacity indoor units
Up to 22.4kW
from 22.4kW to 33.0kW
from 33.0kW to 47.0kW
from 47.0kW to 71.0kW
from 71.0kW to 104kW over 104kW
Vapor line (mm.) Ø 15,9 Ø 22,2 Ø 28,6 Ø 31,8 Ø 38,1 Liquid line (mm.) Ø 9,5 Ø 12,7 Ø 15,9 Ø 19,1
(4) Piping between branch and indoor unit (segments a, b , c, d, e, f) Indoor units P22, 28, 36, 45, 56 P71, 80, 90, 112, 140, 160 P224 P280
Vapor line (mm.) Ø 12,7 Ø 15,9 Ø 19,1 Ø 22,2 Liquid line (mm.) Ø 6,4 Ø 9,5
CAUTION
• Make sure that total extension refrigerant piping l ength is 520 m. or less. • If the refrigerant piping equivalent length exceeds 100 m. use pipes with diameters larger by one rank for
liquid piping only. Example: ø 19.1 � ø 22.2
• This unit uses R410A. Limit pressure of O material pipe with ø 19.1 diameter or larger is insufficient. Be sure to use ½ H or H material pipes with minimum thickness or thicker. For ø 19.1 pipe only, however, as long as the thickness is 1.05 mm. or greater, O materials can be used.
• Do not use a bent pipe with an external diameter of ø 28.6 or larger. • Method of refrigerant piping can be selected from line branching, header branching, and line-header
combined branching. Select the proper method according to the layout of indoor units. • Refrigerant piping length and the height difference between indoor units should be arranged as short as
possible.
• Re-branching after the header branching is not allowed.
47
� Selecting branch piping and permissible piping leng th
Line branching
* When total capacity of connected indoor unit exceed 130% of rated capacity, restrict the permissible piping length (actual length) to 100 m.
48
Header branching
* When total capacity of connected indoor unit exceed 130% of rated capacity, restrict the permissible piping length (actual length) to 100 m.
49
Line – header combined branching
* When total capacity of connected indoor unit exceed 130% of rated capacity, restrict the permissible piping length (actual length) to 100 m.
50
2.9.2 Stand alone installation
Follow the piping specification shown below when installingnew refrigerant piping. When reusing existing piping, confirm that existing piping meets the pipe specification shown in this manual.
� Piping specifications (use the following pipes)
• Piping material: Phosphate deoxidized copper seamless air-conditioning pipe compliant with local technical standard or equivalent.
• Refrigerant pipe specifications: Outer diameter x thickness (mm.) ø 6,4 × 0,8 (O material or OL material) ø 9,5 × 0,8 (O material or OL material) ø 12,7 × 0,8 (O material or OL material) ø 15,9 × 1,0 (O material or OL material) ø 19,1 × 1,0 (1/2 H material or H material)* ø 22,2 × 1,0 (O material or OL material) ø 25,4 × 1,0 (1/2 H material or H material) ø 28,6 × 1,0 (1/2 H material or H material) ø 31,8 x 1,1 (1/2 H material or H material) ø 38,1 x 1,35 (O material or OL material) * For ø 19,1 pipe only, as long as the thickness is 1.05 mm. or greater, O materials can be used. NOTE) refrigerant piping diameter must not exceed the outdoor unit main piping diameter. (1) Piping between outdoor unit and kit combination multi [*L > 100 m]
Outdoor unit P450 P560 P710 Vapor line (mm.) Ø 28,6 (31,8)* Ø 31,8 (38,1)* Liquid line (mm.) Ø 15,9 (19,1)
(2) Piping between branches (segmentesi B, C, D, E) Total capacity indoor units
Up to 22.4kW
from 22.4kW to 33.0kW
from 33.0kW to 47.0kW
from 47.0kW to 71.0kW
from 71.0kW to 104kW
over 104kW
Vapor line (mm.) Ø 15,9 Ø 22,2 Ø 28,6 Ø 31,8 Ø 38,1 Liquid line (mm.) Ø 9,5 Ø 12,7 Ø 15,9 Ø 19,1
(3) Piping between branch and indoor unit (segments a, b, c, d, e, f) Indoor unit P22, 28, 36, 45, 56 P71, 80, 90, 112, 140, 160 P224 P280
Vapor line (mm.) Ø 12,7 Ø 15,9 Ø 19,1 Ø 22,2 Liquid line (mm.) Ø 6,4 Ø 9,5
(4) Piping between outdoor unit and A.H.U.(air handling unit ) Outdoor unit P355 P450 P560 P710
Vapor line (mm.) Ø 28,6 Ø 38,1 Liquid line (mm.) Ø 12,7 Ø 15,9 Ø 19,1
AVVERTENZA
• Make sure that the total extension refrigerant pipi ng legth is 520 m. or less. • If the refrigerant piping length exceeds 100 m., uses diameters larger by one rank indicated in this
manual. Refrigerant piping installation specifications on page 44 for the main liquid and vapor piping. • This unit uses R410A. limit pressure of O material pipe with ø 19.1 diameteror larger is insufficient. Be
sure to use ½ H or H material pipes with minimum thickness or thicker. For ø 19.1 pipe only, however, as long as the thickness is 1.05 or greater, O materials can be used.
• Do not use bent pipe with an external diameter of ø 28,6 or larger. • Method of refrigerant piping can be selected from line branching, header branching, and line-header
combined branching. Select the proper method according to the layout od indoor units. • Refrigerant piping length and the height difference between indoors units should be arranged as short as
possible. • Re-branching after the header branching is not allowed.
51
� Selecting branch piping and permissible piping leng th
Line branching
* When total capacity of connected indoor unit exceed 130% of rated capacity, restrict the permissible piping length (actual length) to 100 m.
52
Header branching
* When total capacity of connected indoor unit exceed 130% of rated capacity, restrict the permissible piping length (actual length) to 100 m.
53
Line – header combined branching
* When total capacity of connected indoor unit exceed 130% of rated capacity, restrict the permissible piping length (actual length) to 100 m.
54
AWS line connection
WARNING
• Always refer to AWS installation manual for maintena nce clearance and position of the unit. • Always connect AWS to the designed outdoor unit for AWS. • Never exceed the maximum allowed distance between A WS and GHP. Failure in doing so can
result in malfunctioning of the units and invalidat es the warranty.
55
2.10 Refrigerant charging
ATTENTION
• When charging the refrigerant, accurately measurame nt the length of the piping and
charge the proper amount of refrigerant. If the amo unt of refrigerant is not proper, performace will decline or a breakdown could occur.
• After completion of refrigerant charging, write do wn the installation record on the plate “POINTS FOR INSTALLATION” inside the outdoor unit cont rol box panel. Besides, calculate the refrigerant amount for the whole syst em and write down the oamount on the plate. Calculation formula is shown on the plate. ( write with a permanent marker so that the record does not disappear easily).
2.10.1 Refrigerant charging amount Always check the refrigerant gas factory charge on the unit label before calculating the amount to be added. Calculate the amount of refrigerant to be charged according to the following formula and liquid piping length for aech size of piping.
When the GHP is connected to AWS YOSHI E1:
Charge amount (kg) = (L1 × 0.353)+(L2 × 0.250)+( L3 × 0.170)+(L4 × 0.110)+( L5 × 0.054)+(L6 x 0.022)+QAWS
When the GHP is connected to direct expansion indoor units:
Quantità in kg = (L1 × 0.353)+(L2 × 0.250)+( L3 × 0 .170)+(L4 × 0.110)+( L5 × 0.054)+(L6 x 0.022)+Q de
Where Qde depends on the number of connected indoor units or the size of the AHU according to the table below
Type of indoor units Qde [kg] Qaws [kg]
Direct expansion single inddor unit 5,5 -
Direct expansion multiple indoor unit 6,5 -
Direct expansion air handling unit AHU Riferirsi alle specifiche del costruttore -
Air water system YOSHI AWS E1 - 1,5
2.10.2 Refrigerant charging method
• Place the tank (with the siphon pipe attached) on the refrigerant
scale. • Remove the charging hose from the vacuum pump and
connect it to the tank. • Perform an air purge of the inside of the charging hose from the
tank to the gauge manifold. • Open the valves V1 and V3 and charge the required amount of
refrigerant in the liquid phase. After the charging is completed, close the valves V1 and V3.
CAUTION
When charging the refrigerant, be sure to wear a pa ir of leather gloves. If the refrigerant touches your skin directly, it may cause a frostbite.
L1: liquid piping Ø 22.2 total length (m.) L2: liquid piping Ø 19.1 total length (m.) L3: liquid piping Ø 15.9 total length (m.)
L4: liquid piping Ø 12.7 total length (m.) L5: liquid piping Ø 9.5 total length (m.) L6: liquid piping Ø 6.4 total length (m.)
56
2.11 Notes for branching piping
• Always install line branch pipes to make either “vertical branching” or “horizontal branching” for both vapor and liquid lines.
• Always install header branch pipes to make “horizontal branching” for both vapor and liquid lines.
CAUTION
when connecting the branch pipe, do not bend the main pipe near the connection. If such bending is unavoidable, provide a minimum fo 150 mm. Of straight portion. However, do not use a bent pipe with external diameter of ø 28.6 or larger.
• Do not perform another branching after the header branching.
• When performing header branching, connect the crimp pipe (max 100 mm. from the port) in accordance with the number of indoor units connected.
57
2.12 How to extend exhaust pipe For the correct positioning of the exhaust gas line extension kit refer to national regulations or Local regulations. ALWAYS install a reduction (not supplied with the kit exhaust gas line extension) on the end of the exhaust pipe AISIN GHP outdoor unit before installing the kit itself.
ATTENTION
• Do not extend the exhaust pipe to a location ehere the exhaust gas could potentially enter indoors. If the exhaust pipe is extended to near the intake/exhaust port to the room, window or ventilation port, the exhaust gas could flow in to the room and causes gas poisoning or an accident due to lack oxygen..
• Do not extend the exhaust pipe to an area where fla mmable gas can be produced, flow into, accumulate or leak, or where volatile flammab le materials can be treated. Extension to such locations could result in a fire or an explosion
• Be sure to discharge gas directly to an outdoor are a open to the atmoshere. Accumulated exhaust gas could cause gas poisoning or an accident due lack of oxygen. Install the outdoor unit where adequate ventilation is provided.
• Be sure to discharge the exhaust gas to the atmosph ere where the gas causes no adverse effect to the surroundings. If the exhaust gas is exhausted into the catch basin or ditch, it could be drawn into the room and cause gas poisoning or an accident due to lack of oxygen.
• Be sure to discharge the exhaust gas to a location where the exhaust gas is not directed toward animals or plants. Exposure to the exhaust gas or discharge air could have harmful influence on animals or plants.
• Be sure to maintain the appropriate clearance from the flammable or flame resistant material covering building in accordance with follo wing figure. Inadequate clearance could cause fire.
Distance from the exhaust pipe must be as follows:
Distance from the top end opening of the exhaust pipe muste be as follows:
Try to avoid extending the exhaust pipe in areas where the outside temperature falls to 0°C or less because the inside of the exhaust pipe may freeze.
58
Extended the exhaust pipe according to the following procedure by referring to the figure below.
• Remove the exhaust top from the outdoor unit exhaust port. • Connect the extra sections from the outdoor unit side, and extend the exhaust pipe to the desidered
position following the restriction below:
Total length 15 m Total number of exhaust bends 5
Equivalent bends length 1 m. each
Tilt horizontal section >3%
(inclination towards the drain) Distance between the supports 1,5-2 m
• Attach the exhaust top at the outlet of the extended exhaust pipe paying attention to:
- The angle of the exhaust vent plane shall be vertical to the ground by adjusting the elbow pipes so
that rainwater may not enter the exhaust pipe directly. - Apply silicone caulking material at the lower part of the metal mesh in accordance with the following
figure so that the drain water may not drip from the exhaust (refer to the figure below).
59
2.13 Power supply wiring procedure
2.13.1 Wiring instruction combined installation
60
2.13.2 Wiring instruction stand-alone installation
61
2.14 Summary of electric wiring installation
ATTENZIONE
• Use a dedicated branch circuit. Never use the outdo or unit with other appliances on the
same circuit. If the outdoor unit and other appliances are used on the same circuit, secondary damage could occur due to breaker tripping.
• All electrical installation work must be performed by a certified electrician in accordance with the relevant local and nationa regulations, te chnical standards, and instructions provided in this manual. Improper installation could result in electrical shock, fire or other hazards.
• Provide an electrical leakage breaker with the speci fied capacity for each outdoor unit (sensitivity amperage is 30 mA). If the electrical leakage breaker is not installed, electrical shock could occur.
• Provide an over-current breaker with the specified c apacity for each outdoor unit. If the proper over-current breaker is not installed, overheating, fire or secondary damage due to the breaker tripping could occur.
• Always use the designed cable for wiring. Make sure that the cable is properly connected and fixed so that the outside forces may not be tra nsferred to the terminal connection. Improper connecting or fixing can result in overheating, fire or other hazards.
• Always ground the unit in accordance with the relev ant technical standards. Improper grounding can result in electrical shock.
• Select an “inverter type electric leakage breaker th at will not be affected by high-frequency leakage currents.
2.14.1 Opening for power supply wires / signal wires
62
2.14.2 Wiring example (AC 230V single phase)
63
2.14.3 Direct expansion indoor unit system wiring (AC 230V single phase)
2.14.4 Air water system wiring (AC 230V single phase)
The type of power is always indicated on the nameplate. Always check what kind of power is needed for the proper functioning of the AISIN GHP. Never feed with three-phase current.
64
2.15 Wiring length The wiring length of indoor-outdoor signal wires except the wiring of the remote controller must not exceed the following restriction:
• Longest wiring length: 1.000 m.
• Total wiring length: 2.000 m.
(when using shielded wires, the total wire length is restricted up to 1.500 m.)
SYSTEM EXEMPLE
• In the above system, the longest wiring distance is 900 m. between Ⓐ and Ⓒ, which satisfies the longest wiring length limit of 1.000 m. And the total length, which is the total of 900 m. between Ⓐ and Ⓒ, and 2.000 m. between Ⓑand Ⓓis 1.100 m. This also satisfies the total wiring limit of 2.000 m. The system functions properly only when both the longest wiring length and the total wiring length are within the limit as shown above.
CAUTION
• Be sure to check the longest wiring length and the total wiring length at the time of designing. When the length exceeds the acceptable r estriction range, consider dividing the system or installing DIII – NET extension adapte r (sold separately) additionally.
65
2.16 Branch wiring The following 3 wiring methods are acceptable. • SERIES WIRING
• BUS WIRING (up to 10 branches, re-branching after the branchi s not possible)
• STAR WIRING (up to 10 branches, re-branching after the branchi s not possible)
66
2.17 Various function setting
Address setting method of the indoor and outdoor un its
� The address settind of the outdoor and indoor units is performed automatically.
� When the centralised remote controller is added, set the group address to the indoor units with the standard remote controller. If the standard remote controller is not installed provide that the service center brings a spare one to set the group address on each one unit.
1
Models
AWS Rated Capacity (kW)
COOLING HEATING
E1/E1J Series
8 HP 21,0 23,5
10 HP 26,5 30,0
13 HP 33,5 37,5
16 HP 41,0 47,5
20 HP 52,0 60,0
25 HP 63,5 75,0
� Safety prescriptions
The following symbols are used to indicate important instructions. Always read, understand and follow these instructions carefully.
WARNING
Failure to observe the prescriptions indicated with this symbol could result in serious injury or death.
CAUTION
Failure to observe the prescriptions indicated with this symbol could result in damage to the unit.
This symbol indicates a forbidden action.
This symbol indicates a necessary action.
� Notice for the installer
WARNING
This unit has to be installed by specialised technical personnel. The installation must be performed in accordance with the contents of this manual. If this unit is not properly installed, it will not realize its full performance potential and could cause injury or damage.
This manual contains technical prescriptions, precautions and procedures to install the YOSHI AWS unit properly. It addresses to specialised technical personnel with a basic knowledge of gas heat pumps installation methods. Failure to observe the procedures herein indicated, could result in malfunction and damage to the unit. Before beginning the installation of the YOSHI AWS unit, read and fully under stand the contents of this manual.
After the installation, always call the local AISIN Authorised Service Centre to perform the outdoor and indoor units commission ing.
YOSHI®AWS E1/E1J
Yoshi Air Water System AWS INSTALLATION MANUAL 8 HP-10 HP-13 HP-16 HP-20 HP-25 HP
2
INDEX
Specifications
1 AWS unit specifications ........................... ............................................................................. 3
1.1 Installation prescriptions ................................................................................................... 3
1.2 Parts provided................................................................................................................... 4
2 Before installation ............................... ................................................................................... 4
2.1 Locally procured parts ....................................................................................................... 4
3 Use of water and glycol mixture ................... ........................................................................ 5
4 Installation ...................................... ........................................................................................ 5
4.1 Selecting the location for installation ................................................................................. 5
4.2 External dimensions, hydraulic and refrigerant gas connections ....................................... 6
4.3 Installation space .............................................................................................................. 7
5 Refrigerant pipes ................................. .................................................................................. 8
5.1 Outline drawing of refrigerant piping. ................................................................................ 8
5.2 Piping specifications ......................................................................................................... 9
5.3 Refrigerant gas extra charge ........................................................................................... 10
5.4 Cooling mode ................................................................................................................. 11
5.5 Heating mode ................................................................................................................. 11
6 Electric wire installation ........................ .............................................................................. 11
7 Refrigerant circuit and hydraulic circuit ......... ................................................................... 12
7.1 Wiring with GHP outdoor unit .......................................................................................... 12
7.2 Detailed wiring diagram .................................................................................................. 13
8 AWS Accessories ................................... ............................................................................. 14
8.1 Controller Plus: Control Panel and Probe Temperature Buffer Tank ............................... 14
8.1.1 Control panel ............................................................................................................................................... 14
8.1.2 Probe temperature buffer tank ................................................................................................................... 14
8.2 External probe temperature ............................................................................................ 14
9 Control panel ..................................... ................................................................................... 15
10 AWS Set Point Adjustment .......................... ....................................................................... 16
10.1 Control panel .................................................................................................................. 16
10.2 Setting the offset ............................................................................................................. 17
11 Installation layouts .............................. ................................................................................ 18
11.1 Central storage tank installation ...................................................................................... 18
11.2 Hydraulic separator installation ....................................................................................... 18
11.3 Single pump installation .................................................................................................. 18
11.4 HVAC installation layout AWS E1 ................................................................................... 19
11.5 HVAC installation E1 with proportional distribution of consumption ................................. 20
11.6 HVAC installation AWS E1J variable flow rate no hydraulic separator (AHU) ................. 21
11.7 HVAC installation AWS E1J variable flow rate with hydraulic separator (fan coil) ........... 22
12 Troubleshooting (reference) ....................... ........................................................................ 23
Tecnocasa S.p.A. declines any responsibility for any damage whatever caused by improper use of the unit and/or non compliance with the information contained in this manual. Specifications, drawings and technical information in this manual are subject to change without notice.
Deu
tsch
3
All versions AWS
8HP-E1 (E1J)
AWS 10HP-E1
(E1J)
AWS 13HP-E1
(E1J)
AWS 16HP-E1
(E1J)
AWS 20HP-E1
(E1J)
AWS 25HP-E1
(E1J) Capacity code of the connected GHP outdoor unit P224 P280 P355 P450 P560 P710
Rated cooling capacity∗ kW 21,0 26,5 33,5 41,0 52,0 63,5 Water temperature out - [in] °C 7 – [11] 7 – [12] 7 – [12] 7 – [12] 7 – [12] 7 – [12] Rated heating capacity ∗∗ kW 23,5 30,0 37,5 47,5 60,0 75,0
Water temperature out - [in] °C 45,5 – [41] 45,5 – [40] 45,5 – [40] 45,5 – [40] 45,5 – [40] 45,5 – [40] Flow rate m3/h 4,5 4,5 6,0 7,5 9,5 12,0
Capacity modulation rate cooling (min-max) kW 10,0-21,0 10,0-26,5 10,0-33,5 17,0-41,0 17,0-52,0 17,0-63,5 Capacity modulation rate heating (min-max) kW 13,0-23,5 12,0-30,0 12,0-37,5 19,8-47,5 19,8-60,0 19,8-75,0
19.8-75.0
Power supply∗∗∗ V/Ph/Hz 230/1/50 Power consumption kW 0,84 1,1
Starting current A 10 Available static pressure kPa 80 80 60 100 80 60
Version without Pump (AWS E1J)
Power supply V/Ph/Hz 230/1/50 Starting current A 1,5
Drop pressure plate heat exchanger kPa 33 33 46 22 33 46
Water circuit Water pipes connection Inch 2
(Each AWS unit is delivered with 2” nipless fittings to be installed if necessary) Primary circuit pipes diameter Inch 2 or higher
(Each AWS unit is fitted with a 2” Y-shape filter to be installed on the primary circuit)
Refrigerant circuit
Refrigerant gas connection (gas – liquid) mm 28,6 –12,7 28,6 – 18,0
GHP – AWS pipes diameter (gas – liquid)
mm 19,1 – 9,5 ∗∗∗∗ (12,7)
22,2 – 9,5 ∗∗∗∗ (12,7)
25,4 – 12,7 ∗∗∗∗ (15,9)
28,6 – 12,7 ∗∗∗∗ (15,9)
28,6 – 15,88 ∗∗∗∗ (19,05)
35 – 15,88 ∗∗∗∗ (19,05)
External dimensions and
weight
Height mm 915 Width mm 1020 Depth mm 710
With Pump/Without Pump kg 164/153 204/177 Connectable GHP outdoor units Each AWS unit can be connected with a single AISIN GHP outdoor unit
∗ Rated cooling capacity is measured according to the following conditions: water outlet temperature 7°C; outdoor temperature 35°C DB ∗∗ Rated heating capacity is measured according to the following conditions: water outlet temperature 47°C; outdoor temperature 7°C DB / 6°C WB ∗∗∗ A version fitted with 230V, single phase, 60 Hz is available upon order. ∗∗∗∗ If the distance between GHP and AWS exceeds 40 meters, install a pipe with the diameter indicated in brackets.
1.1 Installation prescriptions
CAUTION
Always foresee the installation of an emergency rel ief valve and a properly dimensioned expansion vessel. These devices are not built in the AWS unit. Where the storage tank should be installed lower th an the AWS unit, foresee the installation of a jolly valve at the higher point o f the water piping. Failure to observe these prescriptions could result in malfunction and/or damage to the unit.
Always foresee the installation of a buffer tank, f itted with anti stratification pipes, which size should be adequate to the AWS unit capacity. Failure to observe these prescription could result in malfunction and/or damage to the unit.
Always check that the Y-shape water filter (supplie d with the unit) is installed on the primary circuit return pipe. In case of multi u nits plants, install one filter each AWS unit. Install the filter to not less than 50 cm from suction of the pump. Failure to observe this prescription makes the warranty no longer valid and could result in malfunction and/or damage to the unit.
WARNING
Welding, refrigerant gas and water piping installat ion should be always performed by specialised technical personnel in acc ordance with instructions and prescriptions mentioned in the present manual. Failure to observe this prescription makes the warranty no longer valid and could result in malfunction and/or damage to the YOSHI AWS unit.
1 AWS unit specifications
4
1.2 Parts provided The following parts are provided with the YOSHI AWS unit. Name
Installation
manual Control box
wiring diagram 2” Y-shape filter
For water pipe [gaskets] 2” brass nipless
[gaskets] where provided Quantity 1 1 1 - [2] 2 - [2]
Location Inside the control panel
Inside the unit near the water connections
Note Always store the manuals in a dry and safe place
Refer to the prescriptions of this manual for the installation of the accessories
2.1 Locally procured parts The following items are required for installing the YOSHI AWS unit.
Part Application
Anchor bolt For installing the AWS unit on the ground (M8X4)
Washer, Nuts For installing the AWS unit on the ground (φ8X4)
Ant vibrant carpet For installing the unit on metal bars or on the roof.
Copper pipe and fittings for refrigerant gas
Refrigerant gas piping (materials and procedures are described in the GHP outdoor unit installation manual)
Steel pipe and fittings for water
Water piping (materials and procedures are described in the present manual)
Insulation For refrigerant gas and water pipe insulation
Electrical wires AWS unit power supply, ground wiring, communication and accessories wiring (proper size and wire specifications are described in the GHP outdoor unit installation manual)
R410a refrigerant gas, precision scale and gauge manifolds
Refrigerant circuit extra charge (refrigerant extra charge is described in the present manual)
Oxy acetylene welding kit Gas bottles, nozzle and copper bars to weld refrigerant pipes
Nitrogen Bottle Refrigerant gas leakage test
(the procedure is described in the GHP outdoor unit installation manual)
Vacuum pump Vacuum suction
(the procedure is described in the GHP outdoor unit installation manual)
Pipe cutter Refrigerant gas piping installation
WARNING
Never use parts which are not compliant with those listed in the present manual. Failure to observe this prescription makes the warranty no longer valid and could result in malfunction and/or damage to the unit.
The installation of the unit must comply with natio nal and local codes. Failure to observe this prescription could result in illegal act. The manufacturer specifically disclaims any liabili ty whatsoever for any claims by any party if any of the procedures in this Installation Manual h ave not been followed. Failure to observe this prescription makes the warranty no longer valid.
2 Before installation
5
Use mixtures of water and antifreeze fluid to lower the freezing point of water. The liquid most commonly used as antifreeze is ethylene glycol. The table shows the reduction factors of the cooling capacity and the capacity of the pump of the AWS as a function of the water temperature and percentage by weight of glycol in the mixture.
Water Glycol Reduction factor of the cooling capacity
Reduction factor of the pump flowrate
°C % kg - - -2 5 0,995 0,99 -4 10 0,990 0,98 -6 15 0,985 0,96 -9 20 0,980 0,94 -12 25 0,975 0,92 -15 30 0,970 0,90 -19 35 0,965 0,88 -23 40 0,960 0,86 -29 45 0,955 0,83 -35 50 0,950 0,80
4.1 Selecting the location for installation
WARNING
• The unit MUST NOT be installed where flammable gas i s generated, accumulated or handled. Failure to observe this prescription could result in damage of the unit, injury, fire or explosion.
• The AWS unit is for outdoor and indoor installation. Read the present manual carefully to select a proper installation location. Make sure ma intenance space is provided around the unit.
• If the unit is installed at high location, provide a safe access by installing ladders or railings for the operator.
• Always install the AWS unit in an area where its smooth operating noise and small vibration won’t be a disturb for the neighbours, particularly in residential areas. Comply to local standards where prescribed.
• Always install the AWS unit in a level location where rainwater cannot accumulate. Provide proper drain routes.
• Always install the AWS unit in a location where it won’t be exposed to strong winds. Provide proper anchor bolts.
• The AWS unit might cause slight interference with other electrical equipment, such as televisions, radios, computers and telephones. Provide proper clearances.
• If the AWS unit is installed in a region with heavy snowfall, install a snow protection hood. The base for the unit is high enough to avoid accumulation of snow in front of the body panels.
• Allocate the route for loading/unloading the unit, materials and parts for maintenance at the installation site.
3 Use of water and glycol mixture
4 Installation
6
4.2 External dimensions, hydraulic and refrigerant gas connections The table below shows the diameters of the water connections, refrigerant, piping diameters and their position in the various models of AWS.
TECHNICAL DATA
Water connections Inch 2
Water pipe connections Inch
2 or higher Anti vibration joints should be foreseen at the water connections in some kind of installation layouts.
The supplied Y strainer must always be installed with a minimum distance of 50 cm from the AWS intake connection
Refrigerant gas connections mm
(8 – 10 – 13) HP (16 – 20 – 25) HP Liquid Gas Liquid Gas 12,7 28,6 18,0 28,6
Refrigerant pipes diameter mm 8 HP 10 HP 13 HP 16 HP 20 HP 25 HP
Liq. Gas Liq. Gas Liq. Gas Liq. Gas Liq. Gas Liq. Gas 9,5 19,1 9,5 22,2 12,7 25,4 15,9 28,6 15,9 28,6 15,9 35,0
Hydraulic and refrigerant gas connection positions
Liquid (16-20-25) HP (8-10-13) HP Gas (16-20-25) HP (8-10-13) HP
Water (8-10-13-16-20-25) HP
A B C D E
mm 130 210 290 375 525
Dimensions (W -H - D) mm 710 -915 - 1020
A
B
C
D
E
915
710
1020
940
YOSHI
450
710
450
FRONT VIEWSIDE VIEWREAR VIEW
Liq.Gas Water
7
4.3 Installation space
Clearances for maintenance and inspection operations are described in the tables below.
Always provide ample space for inspecting and maintaining the piping for the refrigerant gas and for the water.
Front view Top view
YOSHI
1 m or more
Always provide 1 m or more above the AWS unit
<Single unit installation >
Always leave at least 500 mm on the right side (viewed from coupling tubes AWS)
<Overlapped multiple units installation>
YOSHI
YOSHI
Water
Water
When the units are overlapped, route the pipes of the upper unit so that all the body
panels of the lower unit can be disassembled.
<Multiple units installation>
Always leave at least 500 mm on the right side
(viewed from coupling tubes AWS)
CAUTION
• The minimum installation spaces are necessary to pr ovide room for air circulation, inspection and maintenance of the AWS unit. Failure to observe this prescription could result in injury to the maintenance personnel and damage to the unit.
• When more units are installed in the same location, make sure that nearby walls, pipes or other objects, are not obstructions for maintenance operations. Maintenance space is described in the table below.
8
5.1 Outline drawing of refrigerant piping.
WARNING
All the welding operations on the AWS – GHP refrigera nt gas piping must be always performed in accordance with instructions and prescriptions ment ioned in the AISIN GHP installation manual (brazing with nitrogen flow). Failure to observe this prescription makes the warranty no longer valid and could result in malfunction and/or damage to the YOSHI AWS unit.
5 Refrigerant pipes
9
5.2 Piping specifications
WARNING
YOSHI AWS refrigerant gas connections diameter differs from the ones prescribed for the refrigerant gas line to the AISIN GHP outdoor unit. T herefore, install proper adapters (not supplied).
Select the proper AWS – GHP pipe diameter according to the table below.
YOSHI AWS AISIN GHP
Unit
Installation item Diameter x Thickness (mm) Acceptable piping
length (m)
(relative/actual)
Max. height difference(m)
Gas Liquid Liquid (*) GHP
ground GHP roof
Compressor oil
GHP Multi Type AWS E1/E1J
[8 HP] 19,1x1,0 9,5x1,0 12,7x1,0
70/60 20 25 NL10
[10 HP] 22,2x1,0 9,5x 1,0 12,7x1,0 [13 HP] 25,4x1,0 12,7x1,0 15,9x1,0 [16 HP] 28,6x1,5 15,9x1,0 19,05x1,0 [20 HP] 28,6x1,5 15,9x1,0 19,05x1,0 [25 HP] 35,0x1,5 15,9x1,0 19,05x1,0
(*) If the distance between GHP and AWS exceeds 40 meters use a liquid tube of bigger diameter as indicated in the table. The refrigerant gas line for the YOSHI AWS unit must be designed and installed in accordance with the prescriptions here under listed.
Layout example (in case of AWS connection) If there is a height difference
between the locations of indoor and outdoor units, be sure to apply “trap
piping” on the vapour line within every 10 m as illustrated.
10 m
A
L
Outdoor unit
f
AWS
H
Piping length
Maximum piping length (L) (Relative/Actual)
L = A 70/60m or less
Height difference
Height difference between indoor unit and outdoor unit (H)
When GHP outdoor unit is higher than AWS unit
25 m or less
When GHP outdoor unit is lower than AWS unit
20 m or less
CAUTION
It is forbidden to connect direct expansion indoor units and YOSHI AWS to a single AISIN GHP outdoor unit simultaneously. The YOSHI AWS can be only connected to a specific AISIN GHP outdoor unit for AWS with the same capacity.
WARNING
• Never exceed the maximum accepted distances when co nnecting the YOSHI AWS to the
AISIN GHP outdoor unit. Failure to observe this prescription makes the warranty no longer valid and could result in malfunctioning of the YOSHI AWS unit.
10
5.3 Refrigerant gas extra charge
WARNING
Accurately measure the length of the piping and cha rge with the proper amount of refrigerant gas. Failure to observe this prescription could result in malfunctioning of the YOSHI AWS unit. When charging the refrigerant gas, make sure to wea r proper protective gloves. Refrigerant gas leakages can cause frost bites.
• Always charge the refrigerant as a liquid in the tank. In case of charging as a gas may cause a
compositional change of the refrigerant, and could result in a performance decline or a breakdown.
• Always use a refrigerant scale when charging the refrigerant. Using a charging cylinder may cause a compositional change of the refrigerant, could result in a performance decline or a breakdown.
• To avoid cross-contamination with other oil types, make sure to separate maintenance tools according to the type of refrigerant used. In particular, never use the gauge manifold and charging hose with other refrigerants than R410a.
After confirming the factory charge on the AISIN GHP label, use the following equation to determine the necessary extra amount of refrigerant gas. Always refer to the liquid pipe lengths and diameters only.
Extra chrg (kg) = (L0 x 0.250) + (L1 × 0.170) + (L2 × 0.110) + (L3 × 0.054) + QAWS
The value of the variable parameter Q depends on the capacity of the AISIN GHP outdoor unit connected to the YOSHI AWS. Use the table below as reference.
Outd oor unit Installation type Q (kg)
8 – 10 – 13 HP QAWS 0
16 – 20 – 25 HP QAWS + 1,5
CAUTION
The refrigerant extra charge must be done in accord ance with the procedures described in the AISIN GHP installation manual. Failure to observe this prescription makes the warranty no longer no longer valid and could result in malfunctioning of the YOSHI AWS unit.
L0: Liquid pipe Ø 19.0 total length (m) L1: Liquid pipe Ø 15.9 total length (m) L2: Liquid pipe Ø 12.7 total length (m) L3: Liquid pipe Ø 9.52 total length (m)
11
5.4 Cooling mode The refrigerant (R410A) processed by the GHP flows through electronic expansion valve and enters the lower part of the AWS unit heat exchanger at low pressure. The gas evaporates in the plate heat exchanger by taking heat from the counter current water flow. It goes back to the GHP as overheated steam. The outdoor unit fans create an air flow through the heat exchanger and thus the refrigerant can condense. At the same time, the water coming from the buffer tank is cooled and pumped again into the primary circuit by the AWS built in pump. Flow switch, pressure switch and anti freeze thermo sensor overlook the water temperature never to drop inside the heat exchanger. In fact, water may freeze and the heat exchanger can be damaged.
5.5 Heating mode The refrigerant (R410A) processed by the GHP enters the upper part of the AWS unit heat exchanger as high pressure overheated steam. The gas condenses in the plate heat exchanger by ceasing heat to the co current water flow. It goes back to the GHP as high pressure liquid, through the bypass pipe. The two outdoor unit expansion valves divide the return flow, reducing its pressure. The GHP manages the evaporation through the heat exchanger and the heat recovery. At the same time, the water coming from the buffer tank is heated and pumped again into the primary circuit by the AWS built in pump.
6 Electric wire installation
1) Driver expansion valve 2) Check valve 3) Electronic expansion valve 4) Water inlet temperature probe 5) Water outlet temperature probe 6) Plate heat exchanger 0)
7) Water pressure difference switch 8) Air vent valve 9) Flow switch 10) Pump (not included in the version E1J) 11) Pressure switch expansion valve
12
7.1 Wiring with GHP outdoor unit Power supply specifications are always mentioned on the YOSHI AWS product label. Always check the power supply before installing the unit. Always perform the wiring in accordance with the prescriptions listed in the paragraph 0 of the present manual.
WARNING
• NEVER connect the YOSHI AWS unit to a common circuit with other appliances. Use a
dedicated branch circuit protected by an earth leak age breaker. Failure to observe this prescription could result in malfunctioning of the unit and hazards for people and/or things.
• NEVER ground the unit by connecting the wires to water or gas piping or to a lightning rod.
• NEVER switch on the power supply before the final comm issioning is performed by the AISIN Authorised Service Centre. Failure to observe this prescription makes the warranty no longer valid and could result in malfunction and/or damage to the YOSHI AWS unit.
• All electrical installation work must be performed by specialised technical personnel in accordance with the local and national installation standards. A declaration of conformity must be provided by the installer. Failure to observe this prescription could result in electrical shock, fire or other hazards.
• Switch off the main circuit breaker or power meter during the electrical installation work of the YOSHI AWS unit.
• Always use the designated cable for wiring, includi ng the ground wiring, according to the national standards.
• Always check the power supply specifications on the YOSHI AWS unit. Failure to observe this prescription could result in malfunction and/or damage to the YOSHI AWS unit.
I – I: communication line outdoor unit – AWS. O – O : communication line outdoor unit – outdoor unit (NOT AVAILABLE WITH AWS). Q1 – Q2: electrical terminals present only on GHP (16-20-25) HP. Terminals can be used only for direct expansion.
NEVER SUPPLY THE UNIT WITH THREE PHASE POWER
7 Refrigerant circuit and hydraulic circuit
13
7.2 D
etailed wiring diagram
POWER SUPPLY 230 VL
N
GROUNDING
GHPCHK: General alarm signal outdoor unit GHP
ALOUT: General alarm signal outdoor unit (dry contact)
PT3: Outside temperature probe
CAP-/CAP+: Current signal power control 4-20 mA DC
0-12-12: Power supply control panel "controller plus" (12V)
CANH/CANL/CANG: Communication line panel "controller plus"
SIGNAL CABLE2 X 0.75-1.25mm ²
GHP-AWS CONNECTION CABLE2 X 0.75-1.25mm ²
GHP POWER WIRE2 X 2.5 mm ² (min section)
ELECTRICAL LEAKAGEBREAKER (20A)(not supplied) ELECTRICAL LEAKAGE
BREAKER (16A)(not supplied)
AWS POWER WIRE2 X 2.5 mm ² (min section)
GHP TERMINAL BLOCK
(It is located in the rear side of the GHP)
AWS TERMINAL BLOCK
(It is located in the AWS electric box)
GROUNDING
L-N: Power supply
CHECK: General alarm dry contact
CONTACT H/C: Heat/Cool selection signal
F1-F2: GHP AISIN - AWS YOSHI communication
P. Kit: WKIT pump switch (optional)
Q1-Q2: Outdoor units communication. "Installation
combined" Exp. direct. Only on GHP (16-20-25) HP
MP: Power supply external pump or zone valve(only for AWS E1J version). Max 10 A contacts
REM: AWS remote ON/OFF selection
REM1: Heat/Cool remote selection
POWER SUPPLY 230 VLN
SET-/SET+:Segnale in corrente 4-20 mA DCper regolazione temperatura set point
485+/485-: Modbus
MP
14
8.1 Controller Plus: Control Panel and Probe Temperature Buffer Tank
8.1.1 Control panel Control panel for the remote management of the AWS with which is possible to control and management of a single module from a remote location. The shielded cable connecting the panel to the module has a maximum length of 60 meters. The panel allows you to control and modify the operating parameters of the module (for details regarding the management of the module with the remote control panel, refer to the AWS "service manual").
8.1.2 Probe temperature buffer tank The probe is used to stop the pump when the AWS reaches the set point temperature. It must be installed on the tank and connected to the AWS as shown in the drawing.
8.2 External probe temperature The probe allows adjustment of the flow temperature of the water according to the temperature of the outside air by means of a 4-20 mA current signal.
8 AWS Accessories
15
WARNING
• NEVER change the factory settings (cooling and heating set point) of the water
thermostat. Failure to observe this prescription makes the warranty no longer valid and could result in malfunction and/or damage to the unit.
• NEVER disconnect or bypass the YOSHI AWS built in safety devices for a forced operation of the unit. Failure to observe this prescription makes the warranty no longer valid and could result in malfunction and/or damage to the unit.
• NEVER change the factory settings of the remote contro ller fitted in the control panel. Failure to observe this prescription could result in malfunction and/or damage to the unit.
• NEVER switch on the power supply before the final comm issioning is performed by the AISIN Authorised Service Centre. Failure to observe this prescription makes the warranty no longer valid and could result in malfunction and/or damage to the YOSHI AWS unit.
• Some operation parameters of the YOSHI AWS can be chang ed under request to the AISIN Authorised Service Centre. Failure to observe this prescription makes the warranty no longer valid.
• In case of multiple units installations it is possi ble to manage a proportional distribution of the capacity by an external optional device.
• The built in water thermostat always indicates the return temperature of the primary circuit. NEVER SET THE VALUE BELOW 8°C.
The YOSHI AWS control panel is represented below. In case of AISIN GHP outdoor unit malfunction, the error code will be displayed on the remote controller fitted in the YOSHI AWS control panel. Check the failure type on the AISIN GHP installation manual.
The water thermostat factory settings are: - COOL mode: T set cool = 8°C - HEAT mode: T set heat = 44°C
The YOSHI AWS has the following safety built in devices: - Pressure difference switch: the AISIN GHP outdoor unit stops in case of missing pressure
difference between inlet and outlet of the pump. - Flow switch: the AISIN GHP outdoor unit stops in case of insufficient water flow in the primary
circuit. - Antifreeze thermostat: In the summer the AISIN GHP outdoor unit stops in case of water
temperature in the primary circuit below +5°C. In the winter the pump is started when the water temperature is below +5 °C and, if necessary, also the GHP is started.
- Pump overload switch: the YOSHI AWS pump stops in case of overheating of the pump itself.
9 Control panel
16
10.1 Control panel
The unit AWS YOSHI has the possibility to vary the capacity delivered, in a range between 25% and 100% of rated power, as a function of the return water temperature on the primary circuit. The modulation of the capacity is adjusted according to a proportional band. Just adjust the temperature set point on the user menu on the control panel, that is the parameters "Tset" and the proportional band width (Range modulation parameter). As the return water temperature on the primary approaches the set point, the AWS capacity is reduced of 25%. Once the set point is reached and exceed, the system makes 6 consecutive temperature checks, one every each 10 seconds. If, during these controls, the temperature never goes below the set point the AWS stops. If the optional "Plus Controller" has been installed, once the set point has been reached and the AWS stops, the primary circulation pump halts. Otherwise, the primary circulation pump continues to run, nevertheless the AWS system is in stand-by. Example of modulation in heating: The set point temperature in heating, ie the parameter "Tset heat", may vary in a range between 30°C and 48°C. The factory settings are: Tset heat = 44°C; Modulation Range = 5°C The table below shows the method of variation of the capacity and a numerical example.
AWS Capacity [%]
Tset heat [°C] Modulation Range [°C]
Low Temperature Modulation [°C]
Outlet Temperature [°C]
100
A ∆T
A - ∆T
A + 1 75 (A - ∆T) + (∆T•0,25) 50 (A - ∆T) + (∆T • 0,5) 25 (A - ∆T) + (∆T•0,75)
Numerical example on the minimum temperature set po int 100
30 5
25
31 75 26,25 50 27,5 25 28,75
Numerical example on the maximum temperature set point 100
48 7
41
49 75 42,75 50 44,5 25 46,25
10 AWS Set Point Adjustment
17
Example modulation in cooling: The set point temperature in cooling, ie the parameter "Tset cool", may vary in a range between 6°C and 15°C. The factory settings are: Tset cool= 8°C; Modulation Range = 5°C
AWS Capacity [%]
Tset cool [°C] Modulation Range [°C]
Max. Temperature Modulation [°C]
Outlet Temperature [°C]
100
A ∆T
A + ∆T
A - 1 75 (A + ∆T) - (∆T•0,25) 50 (A + ∆T) - (∆T • 0,5) 25 (A + ∆T) - (∆T•0,75)
Numerical example on the minimum temperature set po int 100
6 5
11
5 75 9,75 50 8,5 25 7,25
Numerical example on the maximum temperature set point 100
15 7
22
14 75 20,25 50 18,5 25 16,75
10.2 Setting the offset The unit YOSHI AWS allows you to adjust the offset of the set point temperature, that is the return water temperature on the primary circuit. The parameters "Tset Offset " can be changed in the user menu, (please refer to the AWS service manual). If the optional "Controller Plus" has been installed, of the offset measurement will be made by its active probe, installed on the buffer tank. The factory settings are: Heat Tset Offset = 2°C Cool Tset Offset = 2°C
18
CAUTION
The installation layouts below are just representat ive of suggested possibilities. Always refer to technical qualified personnel for d esigning. Further information is available under request by AISIN technical department or on the website www.aisin.it .
11.1 Central storage tank installation This layout is recommended by the manufacturer for fan-coil installations. to optimise the operation of the AISIN GHP. When choosing this layout always make sure that the water flow of the primary and the secondary circuits are balanced. Moreover, the storage tank must be provided with anti stratification pipes.
11.2 Hydraulic separator installation When choosing this layout, make sure that the static pressure of the water pump fitted in the YOSHI AWS unit is enough to win the total pressure drop of the primary circuit. In this case it is possible to install horizontal storage tanks.
11.3 Single pump installation This layout is recommended by the manufacturer for Air Handling Unit (AHU) installations. Make sure that the static pressure of the water pump fitted in the YOSHI AWS unit is enough to win the total pressure drop of the whole circuit.
11 Installation layouts
19
11.4 HVAC installation layout AWS E1
20
11.5 HVAC installation E1 with proportional distribution of consumption
21
11.6 HVAC installation AWS E1J variable flow rate no hydraulic separator (AHU)
22
11.7 HVAC installation AWS E1J variable flow rate with hydraulic separator (fan coil)
23
WARNING
• NEVER stop the GHP – AWS system by switching off the pow er supply during the
operation. Failure to observe this prescription makes the warranty no longer valid and could result in malfunction and/or damage to the unit.
• NEVER switch on the YOSHI AWS power supply after switchin g on the GHP outdoor unit. Failure to observe this prescription could result in malfunction and/or damage to the unit.
The table below shows all the possible failures indicated directly by the YOSHI AWS control panel.
ALARM TYPE ALARM CODE POSSIBLE CAUSES SOLUTIONS
Flow switch alarm A1S1 • Y-filter clogged • Capacity insufficient
• Clean the Y-filter
• Check the pressure in the hydraulic circuit
• Check the flow switch
Pressure difference switch alarm
A2S1 • Air in the system • Pump malfunction
• Remove the air
• Replace the pump • Check the pressure differential switch
(compare the state with the flow switch)
GHP Alarm A3S1
• Check the code displayed on the GHP. Press UP for the current alarms and DOWN for those in STAN-BY
Flowswitch tamper alarm A4S1
• Check the wiring of the flowswitch.
• Check the operation of the flowswitch. • Check the layout of plant (other
pumps make circulate water when not expected
Antifreeze alarm A5S1
• Check the operation of the pump, the flow switch and pressure differential switch
• Verify that the offset values in summer operation are not excessive
• Check the temperature probes and their wiring
Return temperature probe alarm
A6S1 • Check the probe and the wiring
Antifreeze temperature probe alarm
A7S1 • Check the probe and the wiring
Expansion valve driver alarm
A8S1 • Use the Carel display. Press "help"
and check which component is in alarm
Maintenance period warning
A13S1
The heat pump is about to reach the 10.000 hours of operation. Need for routine maintenance.
• Contact the service centre Aisin
Maintenance period alarm
A14S1
The heat pump has reached 10.000 hours of operation. Need for routine maintenance.
• Reset the hours of operation (See page 82, service manual paragraph 13.3 "Reset hours of operation").
12 Troubleshooting (reference)
24
Winter antifreeze protection
A15S1
the water temperature inside the AWS dropped below the minimum threshold
• Check water circulation and make sure the unit is not exposed to severe outdoor conditions.
GHP starting failure A18S1 • Check T1T2 setting • Check wiring 15 - 16 • Check C7 – NO7 relay
25
The table below shows all the error codes displayed on the remote controller fitted in the AWS control panel. In case of malfunction contact the AISIN Authorised Service Centre that usually maintains the GHP outdoor unit.
R/C AWS
Blinking indication (ON doesn’t blink)
(OFF led off)
GHP outdoor
unit display
Type of failure Possible cause Error code
Led ON/OFF
TEST Disp.
Unit No.
A0 X X X 63-n External input • External protection input signal stops the unit • Remote controller local setting failure
A1 X X X 20-n Indoor unit PC board
• PC board defective • EEPROM setting error
A3 X X X 95-n Drain lines
- AWS flow switch
• Direct Expansion version – indoor unit drain pump malfunction .
• AWS version – flow switch or antifreeze thermostat switched off.
A6 X X X 15-n Indoor unit fan motor
• Fan motor blocked • Harness disconnection
A7 ON X X 35-n Indoor unit swing
flap motor • Swing flap motor malfunction • Cam mechanism failure
A9 X X X 21-n Indoor unit PC board
• LEV malfunction • Harness disconnection
AF ON OFF X 30-n Drain pipe • Improper drain piping installation (inverse draft) • Pipe clogged
AH ON OFF X 31-n Air cleaning device
• Indoor unit circuit boar malfunction • Air cleaning device failure (optional)
AJ X X X 22-n Capacity setting • Capacity setting failure • Missing capacity setting adapter (replacement of PCB)
C4 X X X 18-n
Indoor unit temperature
sensors
• Heat exchanger temperature sensor failure • Improper harness connection
C5 X X X 19-n • Gas pipe temperature sensor failure • Improper harness connection
C9 X X X 97-n
• Direct Expansion version - Intake air temperature sensor failure
• AWS version – Resistors group failure • Improper harness connection
CA X X X 98-n • Exhaust air temperature sensor failure • Improper harness connection
CJ ON OFF X 17-n R/C temperature
sensor • R/C temperature sensor failure • Improper harness connection
U3 X X X - Test run • Test run operation
U4 X X X - Communication • Outdoor unit power supply OFF • Outdoor unit – indoor unit transmission error
U5 X X X 1-n Communication • Duplicating main remote controller connection
• Transmission error
OFF ON OFF - Remote controller PC board
• Remote controller PC board failure • Remote controller setting failure
U8 X X OFF - • Transmission error between main and sub remote controller
U9 X X X - Communication • Transmission error between two indoor units • Transmission error between outdoor and indoor unit
UC ON ON ON 36-n Central remote
controller
• Address duplication of central remote controller • Air-net address duplication of indoor units
UE X X X 23-n • Transmission error between indoor unit and central remote controller
UF X X X 24-n Communication
• Communication error between indoor and outdoor unit • Improper wiring
UH X X X - • Indoor unit address setting failure
E1 X X X 40-0∼2
Outdoor unit PC board
• EEPROM failure or program failure
X X X 84-3,4 • Outdoor unit PC board malfunction • Transmission error between microcomputer
E3 X X X 86-0 Operation failure
• Refrigerant High pressure alarm
E4 X X X 88-0 • Refrigerant Low pressure alarm
E7 X OFF X 86-10∼23 Outdoor unit fan • Heat exchanger fan (1,2,3) failure • DCBL board failure
EA X X X 57-0 4-way valve • 4-way valve failure • Harness disconnection
EC X X X 80-0 Operation failure • Engine coolant overheating (temperature >105°C)
EH X X X 80-10∼30 Engine coolant
pump • Engine coolant pump failure • DCBL board failure
26
R/C AWS
Blinking indication (ON doesn’t blink)
(OFF led off)
GHP outdoor
unit display
Type of failure Error code Possible cause
Error code
Led ON/OFF
TEST Disp.
Unit No.
F3 X X X 91-0 Operation failure
• Compressor discharge temperature too high (>120°C)
F4 X X X 87-0,2 • Compressor intake temperature too high (> 40°C)
FE X X X 81-0 Engine oil • Abnormal engine oil pressure • Engine oil level insufficient
FF X X X 58-0 Compressor oil • Refrigerant oil supply valve failure • Improper harness connection
FJ X X X 47-0 Catalyser • Catalyser overheating (where provided)
H3 X X X 76-0 High pressure
switch • High pressure switch malfunction • Improper harness connection
H4 X X X 88-2 Low pressure switch
• Low pressure switch malfunction • Improper harness connection
H9 X X X 61-0
Outdoor unit temperature
sensors
• Outdoor temperature sensor malfunction • Improper harness connection
H9 X X X 61-1 • Outdoor temperature sensor short circuit
HC X X X 70-0 • Engine coolant temperature sensor malfunction • Improper harness connection
HC X X X 80-1 • Engine coolant temperature sensor short circuit
HJ X X X 80-2 Engine coolant • Engine coolant level insufficient
HF X OFF X EE-0 Maintenance • Periodic maintenance alert
J3 X X X 78-1∼5
Outdoor unit temperature
sensors
• Compressor discharge temp sensor disconnected
X X X 91-2∼7 • Compressor discharge temp sensor short circuit
J4
X X X 54-0 • Super cooling heat ex. temp. sensor disconnected
X X X 54-1 • Super cooling heat ex. temp. sensor short circuit
X X X 55-0,1 • Accumulator outlet temp. sensor disconnected
X X X 55-2,3 • Accumulator outlet temp. sensor short circuit
J5 X X X 53-0,1 • Compressor intake temp. sensor disconnected
X X X 53-2,3 • Compressor intake temp. sensor short circuit
J6 X X X 65-0 • Heat exchanger liquid pipe temp. sensor disconnected
• Improper harness connection X X X 65-2 • Heat exchanger liquid pipe temp. sensor short circuit
J7
X X X 66-0 • Sub heat exchanger liquid pipe temp. sensor disconnected
X X X 66-1 • Sub heat exchanger liquid pipe temp. sensor short circuit
J8 X X X 67-0 Outdoor unit
temperature sensors
• Outdoor liquid pipe temp. sensor disconnected
X X X 67-2 • Outdoor liquid pipe temp. sensor short circuit
JA X X X 73-0,1 Outdoor unit pressure sensors
• High pressure sensor malfunction
JC X X X 88-4 • Low pressure sensor malfunction
JE X X X 71-0 Oil pressure sw. • Oil pressure switch disconnected
JJ
X X X 72-0 Outdoor unit temperature
sensors
• Engine room temp. sensor disconnected
X X X 72-1 • Engine room temp. sensor short circuit
X X X 72-6 • Catalyser temp. sensor disconnected
LE X X X 75-1∼3 Igniter voltage • Igniter voltage too low or too high
LF X X X 84-0 Operation failure
• Engine start failure – missing supply gas
LJ X X X 75-0 • Unwanted engine stop
P8 X X X 74-1∼4 74-6
82-0∼1 Engine • Insufficient starting engine speed (starter failure)
• Abnormal engine speed (gas mixer failure)
PE X X X 74-7 Gas valves • Supply electro magnetic gas valves failure
PF X X X 60-0 Starter • Starter failure
U0 X X X 88-5 Ref. Piping • Refrigerant gas empty
U7 X X X 4-0∼6 Communication • master / slave outdoor unit communication failure
UA X X X 43-0,1 44-n
Indoor unit number
• Over connection of capacity units • Too many indoor units connected
27
NOTE ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. …………………………………………………………………………………………..
28
………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. ………………………………………………………………………………………….. …………………………………………………………………………………………..
29
1
Models
AWS Rated Capacity (kW)
COOLING HEATING
E1J Series
16 HP + 16HP 82,0 95,0
16 HP + 20 HP 93,0 107,5
20 HP + 20 HP 104,0 120,0
16 HP + 25 HP 104,0 122,5
20 HP + 25 HP 115,0 135,0
25 HP + 25 HP 126,0 150,0
� Safety prescriptions
The following symbols are used to indicate important instructions. Always read, understand and follow these instructions carefully.
WARNING
Failure to observe the prescriptions indicated with this symbol could result in serious injury or death.
CAUTION
Failure to observe the prescriptions indicated with this symbol could result in damage to the unit.
This symbol indicates a forbidden action.
This symbol indicates a necessary action.
� Notice for the installer
WARNING
This unit has to be installed by specialised technical personnel. The installation must be performed in accordance with the contents of this manual. If this unit is not properly installed, it will not realize its full performance potential and could cause injury or damage.
This manual contains technical prescriptions, precautions and procedures to installa the YOSHI AWS unit properly. It addresses to specialised technical personnel with a basic knowledge of gas heat pumps installation methods. Failure to observe the procedures herein indicated, could result in malfunction and damage to the unit. Before beginning the installation of the YOSHI AWS unit, read and fully under stand the contents of this manual.
After the installation, always call the local AISIN Authorised Service Centre to perform the outdoor and indoor units commission ing.
YOSHI®AWS E1J - TWIN
Yoshi Air Water System AWS INSTALLATION MANUAL
40 HP – 50 HP
2
INDEX
Specifications 1 AWS unit specifications ........................... ........................................................................... 3
1.1 Installation prescriptions ................................................................................................... 3
2 Before installation................................ ................................................................................ 4
2.1 Parts provided................................................................................................................... 4
2.2 Locally procured parts ....................................................................................................... 4
3 Use of water and glycol mixture ................... ...................................................................... 5
4 Installation ...................................... ...................................................................................... 5
4.1 Selecting the location for installation ................................................................................. 5
4.2 External dimensions, hydraulic and refrigerant gas connections ....................................... 6
4.3 Installation space .............................................................................................................. 7
5 Refrigerant piping ................................ ................................................................................ 8
5.1 Outline drawing of refrigerant piping. ................................................................................ 8
5.2 Piping specifications ......................................................................................................... 9
5.3 Refrigerant gas extra charge ........................................................................................... 10
6 Refrigerant circuit and hydraulic circuit ......... ................................................................. 11
6.1 Cooling mode ................................................................................................................. 11
6.2 Heating mode ................................................................................................................. 11
7 Electric wire installation ........................ ............................................................................ 12
7.1 Wiring with GHP outdoor unit .......................................................................................... 12
7.2 Detailed wiring diagram .................................................................................................. 13
8 AWS Accessories ................................... ........................................................................... 14
8.1 Controller Plus: Control Panel and Probe Temperature Buffer Tank ............................... 14
8.1.1 Control panel ............................................................................................................... 14
8.1.2 Probe temperature buffer tank ..................................................................................... 14
8.2 External probe temperature ............................................................................................ 14
9 Control panel ..................................... ................................................................................. 15
10.1 Control panel .................................................................................................................. 16
10 AWS Set Point Adjustment .......................... ..................................................................... 16
10.1 ........................................................................................................................................... 17
10.2 Setting the offset ............................................................................................................. 17
11 Installation layouts .............................. .............................................................................. 18
11.1 Central storage tank installation ...................................................................................... 18
11.2 Hydraulic separator installation ....................................................................................... 18
11.3 Single pump installation .................................................................................................. 18
11.4 HVAC installation AWS E1J TWIN .................................................................................. 19
11.5 HVAC installation E1J TWIN proportional distribution of consumption ............................ 20
11.6 HVAC installation AWS E1J TWIN variable flow rate no hydraulic separator (AHU) ....... 21
11.7 HVAC installation AWS E1J TWIN variable flow rate with hydraulic separator (fan coil) . 22
12 Troubleshooting (reference) ....................... ...................................................................... 23
Tecnocasa S.p.A. declines any responsibility for any damage whatever caused by improper use of the unit and/or non compliance with the information contained in this manual. Specifications, drawings and technical information in this manual are subject to change without notice.
Deu
tsch
3
TWIN unit AWS 40 HP – E1J AWS 50 HP – E1J
16+16 HP 16+20 HP 20+20 HP 16+25 HP 20+25 HP 25+25 HP
Capacity code of the connected GHP outdoor unit P900 P1010 P1120 P1160 P1270 P1420 Rated cooling capacity∗ kW 82,0 93,0 104,0 104,0 115,0 126,0
Water temperature (out – in)] °C 7 – 11 7 – 11,5 7 – 12 7 – 11 7 – 11,5 7 – 12 Min. supply water temperature °C 6
Rated heating capacity ∗∗ kW 95,0 107,5 120,0 122,5 135,0 150,0 Water temperature (out – in) °C 45,5 – 41 45,5 – 40,5 45,5 – 40 45,5 – 41 45,5 – 40,5 45,5 – 40
Max. supply water temperature °C 47 Flow rate m3/h 19,0 24,0
Capacity modulation range cooling. (min-max) kW 17,0 – 82,0 17,0 – 93,0 17,0–104,0 17,0–104,0 17,0–115,0 17,0–126,0 Capacity modulation range heating (min-max) kW 19,8 – 95,0 19,8–107,5 19,8–120,0 19,8–122,5 19,8–135,0 19,8–150,0
Unit without pump
(AWS E1J)
Power supply V/Ph/Hz 230/1/50
Power consumption W 250
Starting current A 1,5
Plate heat exchanger pressure drop kPa 33 33 33 46 46 46
Water circuit
Water connections Inch 2,5 (flange connection DN 65 – EN 1092 1/13)
Primary circuit pipe size Inch 2,5 or higher (Each AWS unit is fitted with a 2,5” Y strainer to be installed on the primary circuit)
Refrigerant circuit
Refrigerant gas connection (gas – liquid) mm 2 x 28,6 – 2 x 18,0
GHP 1 – AWS pipe size
(gas – liquido) mm 28,6–15,88
***(19,05) 28,6–15,88 ***(19,05)
28,6–15,88 ***(19,05)
28,6–15,88 ***(19,05)
28,6–15,88 ***(19,05)
35,0–15,88 ***(19,05)
GHP 2 – AWS pipe size
(gas – liquido) mm 28,6–15,88
***(19,05) 28,6–15,88 ***(19,05)
28,6–15,88 ***(19,05)
35,0–15,88 ***(19,05)
35,0–15,88 ***(19,05)
35,0–15,88 ***(19,05)
Dimensions and weight
Height mm 915 Width mm 710 Depth mm 1.020 Weight kg 230
Conectable GHP outdoor units 2 ∗ Rated cooling capacity is measured according to the following conditions: water outlet temperature 7°C; outdoor temperature 35°C DB ∗∗ Rated heating capacity is measured according to the following conditions: water outlet temperature 47°C; outdoor temperature 7°C DB / 6°C WB ∗∗∗ If the distance between GHP and AWS exceeds 40 meters, install a pipe with the diameter indicated in brackets.
1.1 Installation prescriptions
CAUTION
Always foresee the installation of an emergency rel ief valve and a properly dimensioned expansion vessel. These devices are not built in the AWS unit. Where the storage tank should be installed lower th an the AWS unit, foresee the installation of a jolly valve at the higher point o f the water piping. Failure to observe these prescriptions could result in malfunction and/or damage to the unit.
Always foresee the installation of a buffer tank, f itted with anti stratification pipes, which size should be adequate to the AWS unit capacity. Failure to observe these prescription could result in malfunction and/or damage to the unit.
Always check that the Y-shape water filter (supplie d with the unit) is installed on the primary circuit return pipe. In case of multi u nits plants, install one filter each AWS unit. Install the filter to not less than 50 cm from suction of the pump. Failure to observe this prescription makes the warranty no longer valid and could result in malfunction and/or damage to the unit.
WARNING
Welding, refrigerant gas and water piping installat ion should be always performed by specialised technical personnel in acc ordance with instructions and prescriptions mentioned in the present manual. Failure to observe this prescription makes the warranty no longer valid and could result in malfunction and/or damage to the YOSHI AWS unit.
1 AWS unit specifications
4
2.1 Parts provided The following parts are provided with the YOSHI AWS unit. Name
Installation
manual Control box
wiring diagram 2” Y-shape filter for water
pipe [gaskets] DN 65 flanges EN 1092
[gaskests] where provided Quantity 1 1 1 - [2] 2 – [2]
Location Inside the control panel
Inside the unit near the water connections
Note Always store the manuals in a dry and safe place
Refer to the prescriptions of this manual for the installation of the accessories
2.2 Locally procured parts The following items are required for installing the YOSHI AWS unit.
Part Application
Anchor bolt For installing the AWS unit on the ground (M8X4)
Washer, Nuts For installing the AWS unit on the ground (φ8X4)
Ant vibrant carpet For installing the unit on metal bars or on the roof.
Copper pipe and fittings for refrigerant gas
Refrigerant gas piping (materials and procedures are described in the GHP outdoor unit installation manual)
Steel pipe and fittings for water
Water piping (materials and procedures are described in the present manual)
Insulation For refrigerant gas and water pipe insulation
Electrical wires AWS unit power supply, ground wiring, communication and accessories wiring (proper size and wire specifications are described in the GHP outdoor unit installation manual)
R410a refrigerant gas, precision scale and gauge manifolds
Refrigerant circuit extra charge (refrigerant extra charge is described in the present manual)
Oxy acetylene welding kit Gas bottles, nozzle and copper bars to weld refrigerant pipes
Nitrogen Bottle Refrigerant gas leakage test (the procedure is described in the GHP outdoor unit installation manual)
Vacuum pump Vacuum suction (the procedure is described in the GHP outdoor unit installation manual)
Pipe cutter Refrigerant gas piping installation
Fixing bolts Installation of the DN 65 flanges (Screws M16X50 – Nut M16)
WARNING
Never use parts which are not compliant with those listed in the present manual. Failure to observe this prescription makes the warranty no longer valid and could result in malfunction and/or damage to the unit.
The installation of the unit must comply with natio nal and local codes. Failure to observe this prescription could result in illegal act. The manufacturer specifically disclaims any liabili ty whatsoever for any claims by any party if any of the procedures in this Installation Manual h ave not been followed. Failure to observe this prescription makes the warranty no longer valid.
2 Before installation
5
Use mixtures of water and antifreeze fluid to lower the freezing point of water. The liquid most commonly used as antifreeze is ethylene glycol. The table shows the reduction factors of the cooling capacity and the capacity of the pump of the AWS as a function of the water temperature and percentage by weight of glycol in the mixture.
Water Glycol Reduction factor of the cooling capacity
Reduction factor of the pump flowrate
°C % kg - - -2 5 0,995 0,99 -4 10 0,990 0,98 -6 15 0,985 0,96 -9 20 0,980 0,94 -12 25 0,975 0,92 -15 30 0,970 0,90 -19 35 0,965 0,88 -23 40 0,960 0,86 -29 45 0,955 0,83 -35 50 0,950 0,80
4.1 Selecting the location for installation
WARNING
• The unit MUST NOT be installed where flammable gas i s generated, accumulated or handled. Failure to observe this prescription could result in damage of the unit, injury, fire or explosion.
• The AWS unit is for outdoor and indoor installation. Read the present manual carefully to select a proper installation location. Make sure ma intenance space is provided around the unit.
• If the unit is installed at high location, provide a safe access by installing ladders or railings for the operator.
• Always install the AWS unit in an area where its smooth operating noise and small vibration won’t be a disturb for the neighbours, particularly in residential areas. Comply to local standards where prescribed.
• Always install the AWS unit in a level location where rainwater cannot accumulate. Provide proper drain routes.
• Always install the AWS unit in a location where it won’t be exposed to strong winds. Provide proper anchor bolts.
• The AWS unit might cause slight interference with other electrical equipment, such as televisions, radios, computers and telephones. Provide proper clearances.
• If the AWS unit is installed in a region with heavy snowfall, install a snow protection hood. The base for the unit is high enough to avoid accumulation of snow in front of the body panels.
• Allocate the route for loading/unloading the unit, materials and parts for maintenance at the installation site.
3 Use of water and glycol mixture
4 Installation
6
4.2 External dimensions, hydraulic and refrigerant gas connections The table below shows the diameters of the water connections, refrigerant, piping diameters and their position in the various models of AWS.
TWIN UNIT REFRIGERANT WATER AND REFRIGERANT GAS CON NECTIONS
Water connections Inch 2,5 The uniti s supplied with DN 65 (EN 1092 1/13) flanges
Primary circuit water pipes diameter Inch
2,5 or higher Anti vibration joints should be foreseen at the water connections in some kind of installation layouts.
The supplied Y strainer must always be installed with a minimum distance of 50 cm from the AWS intake connection.
Refrigerant gas connections mm
40 HP 50 HP Liquid Gas Liquid Gas 2 x 18 2 x 28,6 2 x 18,0 2 x 28,6
GHP – AWS Refrigerant pipes
diameter (distance up to 40 m)
mm
16 + 16 HP 16 + 20 HP 20 + 20 HP 16 + 25 HP 20 + 25 HP 25 + 25 HP Liq.1 Gas1 Liq.1 Gas1 Liq.1 Gas1 Liq.1 Gas1 Liq.1 Gas1 Liq.1 Gas1
15,88 28,6 15,88 28,6 15,88 28,6 15,88 28,6 15,88 28,6 15,88 35,0
Liq.2 Gas2 Liq.2 Gas2 Liq.2 Gas2 Liq.2 Gas2 Liq.2 Gas2 Liq.2 Gas2
15,88 28,6 15,88 28,6 15,88 28,6 15,88 35,0 15,88 35,0 15,88 35,0
GHP – AWS Refrigerant pies diameter
(distance over 40 m) mm
16 + 16 HP 16 + 20 HP 20 + 20 HP 16 + 25 HP 20 + 25 HP 25 + 25 HP Liq.1 Gas1 Liq.1 Gas1 Liq.1 Gas1 Liq.1 Gas1 Liq.1 Gas1 Liq.1 Gas1
19,05 28,6 19,05 28,6 19,05 28,6 19,05 28,6 19,05 28,6 19,05 35,0
Liq.2 Gas2 Liq.2 Gas2 Liq.2 Gas2 Liq.2 Gas2 Liq.2 Gas2 Liq.2 Gas2
19,05 28,6 19,05 28,6 19,05 28,6 19,05 35,0 19,05 35,0 19,05 35,0
Refrigerant gas and water connections
location mm
Gas Liquid Water A B C D E F G
311 426 576 656 151 370 450
Dimensions (W - H - D) mm 710 – 915 – 1.020
FRONT VIEWSIDE VIEW
Water In
G2 L1
915
710
1020
REAR VIEW
940
L2G1
Water Out
A
B
C
D
YOSHI
FG
450
E
7
4.3 Installation space
Clearances for maintenance and inspection operations are described in the tables below.
Always provide ample space for inspecting and maintaining the piping for the refrigerant gas and for the water.
Front view Top view
YOSHI
1 m or more
Always provide 1 m or more above the AWS unit
<Single unit installation >
Always leave at least 500 mm on the right side (viewed from coupling tubes AWS)
<Overlapped multiple units installation>
YOSHI
YOSHI
Water In
G2 L1 L2G1
Water Out
Water In
G2 L1 L2G1
Water Out
When the units are overlapped, route the pipes of the upper unit so that all the body
panels of the lower unit can be disassembled.
<Multiple units installation>
Always leave at least 500 mm on the right side
(viewed from coupling tubes AWS)
CAUTION
• The minimum installation spaces are necessary to pr ovide room for air circulation, inspection and maintenance of the AWS unit. Failure to observe this prescription could result in injury to the maintenance personnel and damage to the unit.
• When more units are installed in the same location, make sure that nearby walls, pipes or other objects, are not obstructions for maintenance operations. Maintenance space is described in the table below.
8
5.1 Outline drawing of refrigerant piping.
WARNING
All the welding operations on the AWS – GHP refrigera nt gas piping must be always performed in accordance with instructions and prescriptions ment ioned in the AISIN GHP installation manual (brazing with nitrogen flow). Failure to observe this prescription makes the warranty no longer valid and could result in malfunction and/or damage to the YOSHI AWS unit.
5 Refrigerant piping
9
5.2 Piping specifications
WARNING
YOSHI AWS refrigerant gas connections diameter differs from the ones prescribed for the refrigerant gas line to the AISIN GHP outdoor unit. T herefore, install proper adapters (not supplied).
Select the proper AWS – GHP pipe diameter according to the table below.
YOSHI AWS GHP AISIN
units
Installation item Diameter x Thickness (mm) Acceptable piping
length. (m)
(relative/actual)
Max height difference. (m)
Gas Liquid Liquid (*) GHP
ground GHP roof
Compressor oil
GHP Multi Type
AWS E1J TWIN
[16HP] 28,6x1,5 15,9x1,0 19,05x1,0
70/60 20 25 NL10 [20HP] 28,6x1,5 15,9x1,0 19,05x1,0
[25HP] 35,0x1,5 15,9x1,0 19,05x1,0
(*) If the distance between GHP and AWS exceeds 40 meters use a liquid tube of bigger diameter as indicated in the table. The refrigerant gas line for the YOSHI AWS unit must be designed and installed in accordance with the prescriptions here under listed.
Layout example (in case of AWS connection) If there is a height difference
between the locations of indoor and outdoor units, be sure to apply “trap
piping” on the vapour line within every 10 m as illustrated.
10 m
A
L
Outdoor unit
f
AWS
H
Piping length
Maximum piping length (L) (Relative/Actual)
L = A 70/60m or less
Height difference
Height difference between indoor unit and outdoor unit (H)
When GHP outdoor unit is higher than AWS unit
25 m or less
When GHP outdoor unit is lower than AWS unit
20 m or less
CAUTION
It is forbidden to connect direct expansion indoor units and YOSHI AWS to a single AISIN GHP outdoor unit simultaneously. The YOSHI AWS can be only connected to a specific AISIN GHP outdoor unit for AWS with the same capacity.
WARNING
• Never exceed the maximum accepted distances when co nnecting the YOSHI AWS to the
AISIN GHP outdoor unit. Failure to observe this prescription makes the warranty no longer valid and could result in malfunctioning of the YOSHI AWS unit.
10
5.3 Refrigerant gas extra charge
WARNING
Accurately measure the length of the piping and cha rge with the proper amount of refrigerant gas. Failure to observe this prescription could result in malfunctioning of the YOSHI AWS unit. When charging the refrigerant gas, make sure to wea r proper protective gloves. Refrigerant gas leakages can cause frost bites.
• Each of the GHP connected to the YOSHI AWS unit must be considered as an independent
refrigerant circuit. Quantities mentioned below are referred to one single GHP.
• Always charge the refrigerant as a liquid in the tank. In case of charging as a gas may cause a compositional change of the refrigerant, and could result in a performance decline or a breakdown.
• Always use a refrigerant scale when charging the refrigerant. Using a charging cylinder may cause a compositional change of the refrigerant, could result in a performance decline or a breakdown.
• To avoid cross-contamination with other oil types, make sure to separate maintenance tools according to the type of refrigerant used. In particular, never use the gauge manifold and charging hose with other refrigerants than R410a.
After confirming the factory charge on the AISIN GHP label, use the following equation to determine the necessary extra amount of refrigerant gas. Always refer to the liquid pipe lengths and diameters only.
Extra charge (kg) = ( L1 × 0.250) + (L2 × 0.170) + (L3 x 0.110) + 1.5
CAUTION
The refrigerant extra charge must be done in accord ance with the procedures described in the AISIN GHP installation manual. Failure to observe this prescription makes the warranty no longer no longer valid and could result in malfunctioning of the YOSHI AWS unit.
L1: Liquid pipe Ø 19.0 total length (m) L2: Liquid pipe Ø 15.9 total length (m) L3: Liquid pipe Ø 12.7 total length (m)
11
6.1 Cooling mode The refrigerant (R410A) processed by the GHP flows through electronic expansion valve and enters the lower part of the AWS unit heat exchanger at low pressure. The gas evaporates in the plate heat exchanger by taking heat from the counter current water flow. It goes back to the GHP as overheated steam. The outdoor unit fans create an air flow through the heat exchanger and thus the refrigerant can condense. At the same time, the water coming from the buffer tank is cooled and pumped again into the primary circuit by the AWS built in pump. Flow switch, pressure switch and anti freeze thermo sensor overlook the water temperature never to drop inside the heat exchanger. In fact, water may freeze and the heat exchanger can be damaged.
6.2 Heating mode The refrigerant (R410A) processed by the GHP enters the upper part of the AWS unit heat exchanger as high pressure overheated steam. The gas condenses in the plate heat exchanger by ceasing heat to the co current water flow. It goes back to the GHP as high pressure liquid, through the bypass pipe. The two outdoor unit expansion valves divide the return flow, reducing its pressure. The GHP manages the evaporation through the heat exchanger and the heat recovery. At the same time, the water coming from the buffer tank is heated and pumped again into the primary circuit by the AWS built in pump.
4
6
TO GHP 1
FROM GHP 1
3
52
9
F
7
1
8
AWS REFRIGERANT CIRCUIT AND HYDRAULIC CIRCUITCOOLILNG MODE
4
6
5
3
2
1
TO GHP 2
FROM GHP 2
10
10
6 Refrigerant circuit and hydraulic circuit
1) Expansion valve driver 2) Check valve 3) Electronic expansion valve 4) Water inlet temperature probe 5) Water outlet temperature probe 6) Plate heat exchanger 0)
7) Water pressure difference switch 8) Air vent valve 9) Flow switch 10) Pump (not included in the version E1J) 11) Expansion valve pressure sensor
12
7.1 Wiring with GHP outdoor unit Power supply specifications are always mentioned on the YOSHI AWS product label. Always check the power supply before installing the unit. Always perform the wiring in accordance with the prescriptions listed in the paragraph 0 of the present manual.
WARNING
• NEVER connect the YOSHI AWS unit to a common circuit with other appliances. Use a
dedicated branch circuit protected by an earth leak age breaker. Failure to observe this prescription could result in malfunctioning of the unit and hazards for people and/or things.
• NEVER ground the unit by connecting the wires to water or gas piping or to a lightning rod.
• NEVER switch on the power supply before the final comm issioning is performed by the AISIN Authorised Service Centre. Failure to observe this prescription makes the warranty no longer valid and could result in malfunction and/or damage to the YOSHI AWS unit.
• All electrical installation work must be performed by specialised technical personnel in accordance with the local and national installation standards. A declaration of conformity must be provided by the installer. Failure to observe this prescription could result in electrical shock, fire or other hazards.
• Switch off the main circuit breaker or power meter during the electrical installation work of the YOSHI AWS unit.
• Always use the designated cable for wiring, includi ng the ground wiring, according to the national standards.
• Always check the power supply specifications on the YOSHI AWS unit. Failure to observe this prescription could result in malfunction and/or damage to the YOSHI AWS unit.
I – I: communication line outdoor unit – AWS. O – O : communication line outdoor unit – outdoor unit (NOT AVAILABLE WITH AWS). Q1 – Q2: electrical terminals present only on GHP (16-20-25) HP. Terminals can be used only for direct expansion.
NEVER SUPPLY THE UNIT WITH THREE PHASE POWER
7 Electric wire installation
13
7.2 Detailed wiring diagram
14
8.1 Controller Plus: Control Panel and Probe Temperature Buffer Tank
8.1.1 Control panel Control panel for the remote management of the AWS with which is possible to control and management of a single module from a remote location. The shielded cable connecting the panel to the module has a maximum length of 60 meters. The panel allows you to control and modify the operating parameters of the module (for details regarding the management of the module with the remote control panel, refer to the AWS "service manual").
8.1.2 Probe temperature buffer tank The probe is used to stop the pump when the AWS reaches the set point temperature. It must be installed on the tank and connected to the AWS as shown in the drawing.
8.2 External probe temperature The probe allows adjustment of the flow temperature of the water according to the temperature of the outside air by means of a 4-20 mA current signal.
AWS TERMINAL BLOCK
ASIT ACTIVE PROBE(BUFFER TANK)
BUILDING MANAGER(THERMO MANAGER OR EQUIVALENT)
OUTSIDE TEMP.ACTIVE PROBE
OPTIONALCONTROL PANEL
POWER SUPPLY 12 V AC
POWEER SUPPLY 12 V AC
AWS – CONTROL PANELCOMMUNICATION
Jumper position on terminal blockfor 4..20 mA current output
8 AWS Accessories
15
The YOSHI AWS control panel is represented below. In case of AISIN GHP outdoor unit malfunction, the error code will be displayed on the remote controller fitted in the YOSHI AWS control panel. Check the failure type on the AISIN GHP installation manual.
The water thermostat factory settings are: - COOL mode: T set cool = 8°C - HEAT mode: T set heat = 44°C
The YOSHI AWS has the following safety built in devices: - Pressure difference switch: the AISIN GHP outdoor unit stops in case of missing pressure
difference between inlet and outlet of the pump. - Flow switch: the AISIN GHP outdoor unit stops in case of insufficient water flow in the primary
circuit. - Antifreeze thermostat: In the summer the AISIN GHP outdoor unit stops in case of water
temperature in the primary circuit below +5°C. In the winter the pump is started when the water temperature is below +5 °C and, if necessary, also the GHP is started.
WARNING
• NEVER change the safety factory settings. Failure to observe this prescription makes the
warranty no longer valid and could result in malfunction and/or damage to the unit. • NEVER disconnect or bypass the YOSHI AWS built in safety devices for a forced
operation of the unit. Failure to observe this prescription makes the warranty no longer valid and could result in malfunction and/or damage to the unit.
• NEVER change the factory settings of the AISIN remote c ontroller fitted in the control panel. Failure to observe this prescription could result in malfunction and/or damage to the unit.
• NEVER switch on the power supply before the final comm issioning is performed by the AISIN Authorised Service Centre. Failure to observe this prescription makes the warranty no longer valid and could result in malfunction and/or damage to the YOSHI AWS unit.
• Some operation parameters of the YOSHI AWS can be chang ed under request to the AISIN Authorised Service Centre. Failure to observe this prescription makes the warranty no longer valid.
• In case of multiple units installations it is possi ble to manage a proportional distribution of the capacity by an external optional device.
• The main screen of the YOSHI control panel always dis plays the primary circuit return temperature. Supply temperature can be displayed in the service menu under analogue inputs folder.
9 Control panel
16
10.1 Control panel
The unit AWS YOSHI has the possibility to vary the capacity delivered, in a range between 13% and 100% of rated power, as a function of the return water temperature on the primary circuit. The modulation of the capacity is adjusted according to a proportional band. Just adjust the temperature set point on the user menu on the control panel, that is the parameters "Tset" and the proportional band width (Range modulation parameter). As the return water temperature on the primary approaches the set point, the AWS capacity is reduced to 13%. Once the set point is reached and exceed, the system makes 6 consecutive temperature checks, one every each 10 seconds. If, during these controls, the temperature never goes below the set point the AWS stops. If the optional "Plus Controller" has been installed, once the set point has been reached and the AWS stops, the primary circulation pump halts. Otherwise, the primary circulation pump continues to run, nevertheless the AWS system is in stand-by. Example of modulation in heating: The set point temperature in heating, ie the parameter "Tset heat", may vary in a range between 30°C and 48°C. The factory settings are: Tset heat = 44°C; Modulation Range = 5°C The table below shows the method of variation of the capacity and a numerical example. Capacità AWS
[%] Tset heating [°C] Range [°C] Modulation limit temperature [°C]
Outlet temperature [°C]
100
A ∆T
(A+1) - ∆T
A + 1 75 (A+1) - ∆T(4/5) 50 (A+1) - ∆T(3/5) 25 (A+1) - ∆T(2/5) 13 (A+1) - ∆T(1/5)
100
30 5
26
31 75 27 50 28 25 29 13 30
100
48 5
44
49 75 45 50 46 25 47 13 48
10 AWS Set Point Adjustment
17
Example modulation in cooling: The set point temperature in cooling, ie the parameter "Tset cool", may vary in a range between 6°C and 15°C. The factory settings are: Tset cool= 8°C; Modulation Range = 5°C
AWS Capacity [%]
Tset cool [°C] Modulation Range [°C]
Max. Temperature Modulation [°C]
Outlet Temperature [°C]
100
A ∆T
A + ∆T
A - 1 75 (A + ∆T) - (∆T•0,25) 50 (A + ∆T) - (∆T • 0,5) 25 (A + ∆T) - (∆T•0,75)
Numerical example on the minimum temperature set po int 100
6 5
11
5 75 9,75 50 8,5 25 7,25
Numerical example on the maximum temperature set point 100
15 7
22
14 75 20,25 50 18,5 25 16,75
The YOHSI AWS TWIN unit proper operation foresees the following capacity modulation method of
the two GHP units:
■ Two GHP units at 100% of their load;
■ Two GHP units at 75% of their load;
■ Two GHP units at 50% of their load;
■ One GHP unit at 50% of its load;
■ One GHP unit at 25 % of its load.
10.2 Setting the offset The unit YOSHI AWS allows you to adjust the offset of the set point temperature, that is the return water temperature on the primary circuit. The parameters "Tset Offset " can be changed in the user menu, (please refer to the AWS service manual). If the optional "Controller Plus" has been installed, of the offset measurement will be made by its active probe, installed on the buffer tank. The factory settings are: Heat Tset Offset = 2°C Cool Tset Offset = 2°C
18
CAUTION
The installation layouts below are just representat ive of suggested possibilities. Always refer to technical qualified personnel for d esigning. Further information is available under request by AISIN technical department or on the website www.aisin.it .
11.1 Central storage tank installation This layout is recommended by the manufacturer for fan-coil installations. to optimise the operation of the AISIN GHP. When choosing this layout always make sure that the water flow of the primary and the secondary circuits are balanced. Moreover, the storage tank must be provided with anti stratification pipes.
11.2 Hydraulic separator installation When choosing this layout, make sure that the static pressure of the water pump fitted in the YOSHI AWS unit is enough to win the total pressure drop of the primary circuit. In this case it is possible to install horizontal storage tanks.
11.3 Single pump installation This layout is recommended by the manufacturer for Air Handling Unit (AHU) installations. Make sure that the static pressure of the water pump fitted in the YOSHI AWS unit is enough to win the total pressure drop of the whole circuit.
11 Installation layouts
19
11.4 HVAC installation AWS E1J TWIN
20
11.5 HVAC installation E1J TWIN proportional distribution of consumption
21
11.6 HVAC installation AWS E1J TWIN variable flow rate no hydraulic separator (AHU)
22
11.7 HVAC installation AWS E1J TWIN variable flow rate with hydraulic separator (fan coil)
23
WARNING
• NEVER stop the GHP – AWS system by switching off the pow er supply during the
operation. Failure to observe this prescription makes the warranty no longer valid and could result in malfunction and/or damage to the unit.
• NEVER switch on the YOSHI AWS power supply after switchin g on the GHP outdoor unit. Failure to observe this prescription could result in malfunction and/or damage to the unit.
The table below shows all the possible failures indicated directly by the YOSHI AWS control panel.
ALARM TYPE ALARM CODE POSSIBLE CAUSES SOLUTIONS
Flow switch alarm A1S1 • Y-filter clogged • Capacity insufficient
• Clean the Y-filter
• Check the pressure in the hydraulic circuit
• Check the flow switch
Pressure difference switch alarm
A2S1 • Air in the system • Pump malfunction
• Remove the air
• Replace the pump • Check the pressure differential switch
(compare the state with the flow switch)
GHP1 Alarm A3S1
• Check the code displayed on the GHP. Press UP for the current alarms and DOWN for those in STAN-BY
Flowswitch tamper alarm A4S1
• Check the wiring of the flowswitch.
• Check the operation of the flowswitch. • Check the layout of plant (other
pumps make circulate water when not expected
Antifreeze alarm A5S1
• Check the operation of the pump, the flow switch and pressure differential switch
• Verify that the offset values in summer operation are not excessive
• Check the temperature probes and their wiring
Return temperature probe alarm 1
A6S1 • Check the probe and the wiring
Antifreeze temperature probe alarm 1
A7S1 • Check the probe and the wiring
Expansion valve driver alarm 1
A8S1 • Use the Carel display. Press "help"
and check which component is in alarm
Maintenance period warning
A13S1
The heat pump is about to reach the 10.000 hours of operation. Need for routine maintenance.
• Contact the service centre Aisin
12 Troubleshooting (reference)
24
Maintenance period alarm
A14S1
The heat pump has reached 10.000 hours of operation. Need for routine maintenance.
• Reset the hours of operation (See page 82, service manual paragraph 13.3 "Reset hours of operation").
GHP2 Alarm A15S1
• Check the code displayed on the GHP. Press UP for the current alarms and DOWN for those in STAN-BY
Return temperature probe alarm 2
A16S1 • Check the probe and the wiring
Antifreeze temperature probe alarm 2
A17S1 • Check the probe and the wiring
GHP 1 starting failure A18S1 • Check T1T2 setting • Check wiring 15.1 16.1 • Check C1NO1 relay
GHP 2 starting failure A19S1 • Check T1T2 setting • Check wiring 15.2 16.2 • Check C2NO2 relay
25
The table below shows all the error codes displayed on the remote controller fitted in the AWS control panel. In case of malfunction contact the AISIN Authorised Service Centre that usually maintains the GHP outdoor unit.
R/C AWS
Blinking indication (ON doesn’t blink)
(OFF led off)
GHP outdoor
unit display
Type of failure Possible cause Error code
Led ON/OFF
TEST Disp.
Unit No.
A0 X X X 63-n External input • External protection input signal stops the unit • Remote controller local setting failure
A1 X X X 20-n Indoor unit PC board
• PC board defective • EEPROM setting error
A3 X X X 95-n Drain lines
- AWS flow switch
• Direct Expansion version – indoor unit drain pump malfunction .
• AWS version – flow switch or antifreeze thermostat switched off.
A6 X X X 15-n Indoor unit fan motor
• Fan motor blocked • Harness disconnection
A7 ON X X 35-n Indoor unit swing
flap motor • Swing flap motor malfunction • Cam mechanism failure
A9 X X X 21-n Indoor unit PC board
• LEV malfunction • Harness disconnection
AF ON OFF X 30-n Drain pipe • Improper drain piping installation (inverse draft) • Pipe clogged
AH ON OFF X 31-n Air cleaning device
• Indoor unit circuit boar malfunction • Air cleaning device failure (optional)
AJ X X X 22-n Capacity setting • Capacity setting failure • Missing capacity setting adapter (replacement of PCB)
C4 X X X 18-n
Indoor unit temperature
sensors
• Heat exchanger temperature sensor failure • Improper harness connection
C5 X X X 19-n • Gas pipe temperature sensor failure • Improper harness connection
C9 X X X 97-n
• Direct Expansion version - Intake air temperature sensor failure
• AWS version – Resistors group failure • Improper harness connection
CA X X X 98-n • Exhaust air temperature sensor failure • Improper harness connection
CJ ON OFF X 17-n R/C temperature
sensor • R/C temperature sensor failure • Improper harness connection
U3 X X X - Test run • Test run operation
U4 X X X - Communication • Outdoor unit power supply OFF • Outdoor unit – indoor unit transmission error
U5 X X X 1-n Communication • Duplicating main remote controller connection
• Transmission error
OFF ON OFF - Remote controller PC board
• Remote controller PC board failure • Remote controller setting failure
U8 X X OFF - • Transmission error between main and sub remote controller
U9 X X X - Communication • Transmission error between two indoor units • Transmission error between outdoor and indoor unit
UC ON ON ON 36-n Central remote
controller
• Address duplication of central remote controller • Air-net address duplication of indoor units
UE X X X 23-n • Transmission error between indoor unit and central remote controller
UF X X X 24-n Communication
• Communication error between indoor and outdoor unit • Improper wiring
UH X X X - • Indoor unit address setting failure
E1 X X X 40-0∼2
Outdoor unit PC board
• EEPROM failure or program failure
X X X 84-3,4 • Outdoor unit PC board malfunction • Transmission error between microcomputer
E3 X X X 86-0 Operation failure
• Refrigerant High pressure alarm
E4 X X X 88-0 • Refrigerant Low pressure alarm
E7 X OFF X 86-10∼23 Outdoor unit fan • Heat exchanger fan (1,2,3) failure • DCBL board failure
EA X X X 57-0 4-way valve • 4-way valve failure • Harness disconnection
EC X X X 80-0 Operation failure • Engine coolant overheating (temperature >105°C)
EH X X X 80-10∼30 Engine coolant
pump • Engine coolant pump failure • DCBL board failure
26
R/C AWS
Blinking indication (ON doesn’t blink)
(OFF led off)
GHP outdoor
unit display
Type of failure Error code Possible cause
Error code
Led ON/OFF
TEST Disp.
Unit No.
F3 X X X 91-0 Operation failure
• Compressor discharge temperature too high (>120°C)
F4 X X X 87-0,2 • Compressor intake temperature too high (> 40°C)
FE X X X 81-0 Engine oil • Abnormal engine oil pressure • Engine oil level insufficient
FF X X X 58-0 Compressor oil • Refrigerant oil supply valve failure • Improper harness connection
FJ X X X 47-0 Catalyser • Catalyser overheating (where provided)
H3 X X X 76-0 High pressure
switch • High pressure switch malfunction • Improper harness connection
H4 X X X 88-2 Low pressure switch
• Low pressure switch malfunction • Improper harness connection
H9 X X X 61-0
Outdoor unit temperature
sensors
• Outdoor temperature sensor malfunction • Improper harness connection
H9 X X X 61-1 • Outdoor temperature sensor short circuit
HC X X X 70-0 • Engine coolant temperature sensor malfunction • Improper harness connection
HC X X X 80-1 • Engine coolant temperature sensor short circuit
HJ X X X 80-2 Engine coolant • Engine coolant level insufficient
HF X OFF X EE-0 Maintenance • Periodic maintenance alert
J3 X X X 78-1∼5
Outdoor unit temperature
sensors
• Compressor discharge temp sensor disconnected
X X X 91-2∼7 • Compressor discharge temp sensor short circuit
J4
X X X 54-0 • Super cooling heat ex. temp. sensor disconnected
X X X 54-1 • Super cooling heat ex. temp. sensor short circuit
X X X 55-0,1 • Accumulator outlet temp. sensor disconnected
X X X 55-2,3 • Accumulator outlet temp. sensor short circuit
J5 X X X 53-0,1 • Compressor intake temp. sensor disconnected
X X X 53-2,3 • Compressor intake temp. sensor short circuit
J6 X X X 65-0 • Heat exchanger liquid pipe temp. sensor disconnected
• Improper harness connection X X X 65-2 • Heat exchanger liquid pipe temp. sensor short circuit
J7
X X X 66-0 • Sub heat exchanger liquid pipe temp. sensor disconnected
X X X 66-1 • Sub heat exchanger liquid pipe temp. sensor short circuit
J8 X X X 67-0 Outdoor unit
temperature sensors
• Outdoor liquid pipe temp. sensor disconnected
X X X 67-2 • Outdoor liquid pipe temp. sensor short circuit
JA X X X 73-0,1 Outdoor unit pressure sensors
• High pressure sensor malfunction
JC X X X 88-4 • Low pressure sensor malfunction
JE X X X 71-0 Oil pressure sw. • Oil pressure switch disconnected
JJ
X X X 72-0 Outdoor unit temperature
sensors
• Engine room temp. sensor disconnected
X X X 72-1 • Engine room temp. sensor short circuit
X X X 72-6 • Catalyser temp. sensor disconnected
LE X X X 75-1∼3 Igniter voltage • Igniter voltage too low or too high
LF X X X 84-0 Operation failure
• Engine start failure – missing supply gas
LJ X X X 75-0 • Unwanted engine stop
P8 X X X 74-1∼4 74-6
82-0∼1 Engine • Insufficient starting engine speed (starter failure)
• Abnormal engine speed (gas mixer failure)
PE X X X 74-7 Gas valves • Supply electro magnetic gas valves failure
PF X X X 60-0 Starter • Starter failure
U0 X X X 88-5 Ref. Piping • Refrigerant gas empty
U7 X X X 4-0∼6 Communication • master / slave outdoor unit communication failure
UA X X X 43-0,1 44-n
Indoor unit number
• Over connection of capacity units • Too many indoor units connected
27
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