technical training 2008
DESCRIPTION
TECHNICAL TRAINING 2008. STATIC BLOWER & ROOFTOP. Content. Introduction Features System & Control Installation Selection Process Troubleshooting. INTRODUCTION. DUCTED BLOWER. Introduction. Static Blower (SB) – Ducted Fan Coil Unit Capacity range: - Cooling: 7.5hp – 75hp - PowerPoint PPT PresentationTRANSCRIPT
Technical Training 2008Technical Training 2008
TECHNICAL TRAINING TECHNICAL TRAINING
20082008
Technical Training 2008Technical Training 2008
STATIC BLOWER STATIC BLOWER
& &
ROOFTOPROOFTOP
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Content
• IntroductionIntroduction
• FeaturesFeatures
• System & ControlSystem & Control
• InstallationInstallation
• Selection Process Selection Process
• TroubleshootingTroubleshooting
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INTRODUCTIONINTRODUCTION
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DUCTED BLOWERDUCTED BLOWER
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Introduction
• Static BlowerStatic Blower (SB) (SB) – Ducted Fan Coil Unit – Ducted Fan Coil Unit
• Capacity range:Capacity range:
- Cooling: 7.5hp – 75hp
- Heatpump: 7.5hp – 60hp
Model Capacity Range (‘000 Btu/h)
75 100 125 150 200 250 300 350 400 450 500 600 750
B
BR
D
ER
C
CR
R407C R407C R407C
R407C
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Introduction
• Basic ConfigurationBasic Configuration
Supply Air
Return Air
Blower
Motor Drain Pan
Coil
Pulley
V-Belt
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Introduction
• Draw-through Operation Draw-through Operation
Air Air
Draw-through Blow-through
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Introduction
• SB series:SB series:
- Available in R22 & R407C
- Horizontal & Vertical air discharge
- Belt-Driven (for SB125 and above)
- Sequential Controller (for > 1 compressors
model)
- Phase Sequencer
- Wide range (7.5 – 75hp for cooling ; 7.5 –
60hp for heatpump)
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Ducted Split Unit
• Indoor UnitIndoor Unit
SB75/100 B
SB75/100 D
SB75/100 BR
SB75/100 ER
SB125 C
SB125 CR
SB150 B
SB125/150 D
SB125/150 D2
SB125/150 ER
SB125/150 ER2
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Ducted Split Unit
• Indoor UnitIndoor Unit
SB200/250/300 D2
SB400/500 D4
SB200/250 B2BR2
SB300/350 B3/BR3
SB400/500 BE/BR4
SB200/250/300 ER2
SB300/350/450 ER3
SB400/500/600 ER4
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Introduction
• MSS-F seriesMSS-F series
- Horizontal air discharge
- Anti corrosion fin
- Outdoor motor protection – IP54
- Flexibility of service access
- Safety device protection • HP & LP switch
• Discharge thermostat
• Phase Sequencer
• Crankcase heater
• Compressor internal overload protection
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Ducted Split Unit
• Outdoor UnitOutdoor Unit
MSS100/125 B
MSS100/125 BR
MSS75/100 C
MSS75 CRMSS75/100/125 F
MSS75/100/125 FR
Model Capacity Range (‘000 Btu/h)
75 100 125 150 200 250 300
B/BR
C/CR
D
ER
R407C
R407C
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Ducted Split Unit
• Outdoor UnitOutdoor Unit
MSS150 C
MSS75/100/125/150 D
(4)MSS75/100/125/150 ER
MSS200/250/300 D2
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ROOFTOPROOFTOP
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Introduction
• Basic Basic ConfigurationConfiguration
Supply Air
Blower
Motor
Drain Pan
Outdoor
Coil
Pulley
V-BeltMotor
Compressor
Return Air
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Introduction
• Rooftop ARooftop A- Available in R22 or R407C
- No additional refrigerant work
- Horizontal side throw or vertical down throw
- Sequential Controller (for > 1 compressors
model)
- Phase Sequencer
- Capacity range: 5.5hp – 42hp
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Rooftop A
• RT-ART-A
RT55 A
RT55 AR(4)RT60/80/100/120/150/200 A
(4)RT60/80/100/120/150/200 AR(4)RT250/300/360/420 A
(4)RT250/300/360/420 AR
Model Capacity Range (‘000 Btu/h)
55 60 80 100 120 150 200 250 300 360 420
A
AR
R407C
R407C
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Introduction
• Rooftop BRooftop B- Available in R22 only
- No additional refrigerant work
- Belt-Driven
- Sequential Controller (for > 1 compressors
model)
- Phase Sequencer
- Higher EER
- Netware III (RT60 only)
- Capacity range: 6hp – 18hp
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Rooftop B
• RT-BRT-B
RT60 B
RT60 BRRT90 B
RT90 BR
RT120/150/180 B
RT120/150/180 BR
Model Capacity Range (‘000 Btu/h)
60 90 120 150 180
B
BR
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FEATURESFEATURES
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Features
• Standard air Standard air discharge discharge configuration asconfiguration as
manufactured.manufactured.
• SB-B seriesSB-B series
Model Std. Air Throw Changeable?
SB75-100 B(R) Horizontal X
SB125 B Horizontal √
SB125 CR Horizontal X
SB150-200 B(R) Horizontal √
SB250-500 B(R) Vertical √
SB600-750 B Vertical X
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Features
• SB-D seriesSB-D series
• SB-E seriesSB-E series
Model Std. Air Throw Changeable?
SB75-150 D Horizontal X
SB200-500 D Vertical √
Model Std. Air Throw Changeable?
SB75-150 ER Horizontal X
SB200 ER Horizontal √
SB250-500 ER Vertical √
SB600 ER Vertical X
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Features
• RT-A seriesRT-A series
RT250/300 A(R) – FXAD : Vertical down throw RT250/300 A(R) – FXAD : Vertical down throw
• RT-B seriesRT-B series
Model Std. Air Throw Changeable?
RT55 A(R) Horizontal X
(4)RT60-200 A(R) Horizontal √
(4)RT250-300 A(R)* Horizontal X
(4)RT360-420 A(R) Horizontal X
Model Std. Air Throw Changeable?
RT60-180 B(R) Horizontal √
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Features
• Come with SLM 3 for single Come with SLM 3 for single compressor compressor
modelmodel
• Come with Sequential Come with Sequential CController for > 1 ontroller for > 1
compressors modelcompressors model
Temperature set
SQ Controller
ON / OFF
Timer set
Operating Mode
Test Run
Heater
Save
Hold
Operating Mode
SLM 3
Temperature set
ON / OFF
Timer Sleep
Fan
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Features
Netware III
ON / OFF
Timer set
Operating Mode
Timer Active
Sleep
Swing
Temperature set
Fan
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Features
• SB-B seriesSB-B series
SB750 B does not come with controllerSB750 B does not come with controller
Model
Handset PCB
SLM 3 SQ Controller Control Module
SB75-100 B(R) √ L2
SB125 B/CR √ U1SB125
SB150 B(R)2 √ SQ2.0
SB150 B(R)2 √ SQ2.0
SB200-500 B(R) √ SQ2.0
SB600 B4 √ SQ2.0
SB750 B5* - - -
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Features
• SB-D seriesSB-D series
• SB-E seriesSB-E series
Model
Handset PCB
SLM 3 SQ Controller Control Module
SB75-100 D √ L2
SB125-150 D √ U1SB125
SB125-300 D2 √ SQ2.0
SB400-500 D4 √ SQ2.0
Model
Handset PCB
SLM 3 SQ Controller Control Module
SB75-100 ER √ L2
SB125-150ER √ U1SB125
SB125-300 ER2 √ SQ2.0
SB300-600 ER √ SQ2.0
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Features
• RT-ART-A series series
• RTRT--BB series series
Model
Handset PCB
SLM 3 SQ Controller Control Module
RT55 A(R) √ U1SB125
(4)RT60-120 A(R) √ U1SB125
(4)RT150-420 A(R) √ SQ2.0
Model
Handset PCB
Netware 3 SQ Controller Control Module
RT60 B(R) √ U1SB125
RT90-180 B(R) √ SQ2.0
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SYSTEM & CONTROLSYSTEM & CONTROL
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System & Control
• L2 BoardL2 Board- Single compressor, 3 fan speed
• U1SB125 BoardU1SB125 Board- Single compressor, single fan speed
• SQ boardSQ board- Multi compressors, single fan speed
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L2 / U1SB125L2 / U1SB125
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L2 / U1SB125 Main Board
• L2L2
L2 Board
Connect to wired handset
To outdoor sensor
To room sensor
To indoor sensor
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Mode of Selection
• Mode can be selected via the value of Mode can be selected via the value of
resistor RMODEresistor RMODE
MODES AUTO COOL DRY HEAT FAN RMODE ()AP X X X X X 3KAT X X X X X 22KEC X X X 110K
X : Modes availableX : Modes available
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Features
• Compressor 9 minutes force ONCompressor 9 minutes force ON
• Memory backup: Auto Random RestaMemory backup: Auto Random Restart rt
• Cold Start / Hot Start / Hot KeepCold Start / Hot Start / Hot Keep
• Sleep functionSleep function
• Self – DiagnosticSelf – Diagnostic
• ProtectionsProtections
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Auto Random Restart
• Auto random resAuto random restart with last stattart with last state e
memorymemory
• Shorted at JLST Shorted at JLST jumper at main bjumper at main boardoard
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Power Up Settings
Power UpPower Up
JLST ShortedJLST Shorted JLST OpenedJLST Opened
Set Temperature = 24°CSet Temperature = 24°C
Unit = OFFUnit = OFF
Mode = COOLMode = COOL
Fan Speed = HighFan Speed = High
User Set ModeUser Set Mode
User Set TemperatureUser Set Temperature
User Set Fan SpeedUser Set Fan Speed
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Sleep Function
COOLCOOL
HEATHEAT
Troom°C
Ts+1
Ts+2
1 2t (hr)
SLEEP set on SLEEP set off
Ts
Ts+½
½
Ts-2
Ts-1
1 2t (hr)Ts
SLEEP set on SLEEP set off
Troom°C ½
Ts-3
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Self – Diagnostics
Error Power LED Timer LED Other LEDs Error Code
Room sensor open or short Blinks 1 time - Blinks Fan Blinks E1
Indoor coil sensor open Blinks 2 times
- Blinks Dry & Fan Blinks E2
Outdoor coil sensor open Blinks 3 times
- Blinks Dry Blinks E3
Compressor overload / ID coil sensor short / OD coil sensor short
Blinks 1 time Blinks Cool Blinks E4
Outdoor defrost - Blinks HEAT in SLM 3 -
Hardware error (tact switch pin short)
Blinks 6 times
Blinks Heat, Cool, follow by Fan Dry
Blinks E8
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Hot Start / Hot Keep
• Hot StartHot Start
- ID fan depends on ID coil temperature User set speed – ID coil temperature > 40 °C
ID Fan Stop – ID coil temperature =< 18 °C
• Hot KeepHot Keep- ID fan depends on ID coil temperature
- 4 options
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Hot Start / Hot Keep
1. Fan Always ON option User set speed – ID coil temperature > 40 °C
ID Fan Low – ID coil temperature < 37 °C
2. Fan ON option at the start of Heat mode
User set speed – ID coil temperature > 40 °C
ID Fan Stop – ID coil temperature < 30 °C
For thermostat cut off
User set speed – ID coil temperature > 40 °C
ID Fan Stop – ID coil temperature < 18 °C
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Hot Start / Hot Keep
3. Fan OFF option
User set speed – ID coil temperature > 40 °C ID Fan Stop – ID coil temperature < 30 °C
4. Fan Low cycle ON & OFF option ID Fan cut in 30 seconds and subsequently cut off for
120 seconds
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Protections
• CompressorCompressor- 3 minutes Minimum OFF Time
- 150 seconds Minimum RUN Time
- Overload ProtectionCOOL, AUTO COOL and DRYCOOL, AUTO COOL and DRY
OD coil tempOD coil temp
Comp & OD FanComp & OD Fan
68 68 o o CC
ONON
OFFOFF
HEAT, AUTO HEATHEAT, AUTO HEAT
ID coil tempID coil temp
Comp, OD FanComp, OD Fan& 4WV& 4WV
68 68 o o CC
ONON
OFFOFF
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Protections
- Hardware Switch Detection A counter is increased by 1 during the first cycle of thermostat
The counter will be reset after 3 minutes
Declare E4 if counter > 5
• OD Fan speed control- Cooling OD Fan will run whenever the compressor is cut-in
- Heating
ID coil tempID coil temp
OD FanOD Fan
55 55 o o CC
ONON
OFFOFF
50 50 o o CC
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Protections
• ID Coil Anti FreezeID Coil Anti Freeze- Cooling mode only
- ID temperature = 1 °C for at least 1 minute
- Compressor has been running for 10 minutes
1 1 ooCCComp & OD FanComp & OD Fan OFFOFF
ONON
10 10 ooCC
Comp & OD FanComp & OD Fan
OFFOFF
ONON
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SQ2.0SQ2.0
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Type of Models
• Cooling: Cooling: SQC2, SQC3, SQC4SQC2, SQC3, SQC4
• Heatpump:Heatpump: SQH22, SQH32, SQH22, SQH32,
• Heater:Heater: SQHT22, SQHT32, SQHT22, SQHT32, SQHT42SQHT42
• RT360/420AR:RT360/420AR: SQSIM01SQSIM01SQ C 2
Sequential Control
Cooling
No. of Comp
SQ H 2 2
Sequential Control
Heatpump
No. of Comp
No. of Heater
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Mode of Selection
Configuration Value of R42 ()
Heatpump 2 comp 1k
Heatpump 3 comp 3.3k
Heatpump 4 comp 9.1k
Cooling/Heater* 2 comp 20k
Cooling/Heater* 3 comp 47k
Cooling/Heater* 4 comp open
DIP SW Configuration
1 & 2 No. of Heaters
3 & 4 Stage Differential Temperature
5 Auto Mode Selection
6 Hot Keep Option
7 & 8 Defrost Option
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SQ Main Board
- Located in the indoor
- Signal to compressors, ID/OD fan, valve & auxiliary
heater with timer & protection
- Compressor relay cut off - H/L trip
- Manual reset button
ON / OFF Dry Contact
Connect to Wired
Handset
To high pressure switch
Dip SwitchTo outdoor sensor
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Features
• Sequence ControlSequence Control
• Balance loading up to 4 compressorsBalance loading up to 4 compressors
• 7 days programmable timer7 days programmable timer
• Auto ModeAuto Mode
• Cold Blast / Spurt Heat / Hot Start / Cold Blast / Spurt Heat / Hot Start /
Hot KeepHot Keep
• Self – DiagnosticSelf – Diagnostic
• Energy SavingEnergy Saving
• ProtectionProtection
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Sequence Control
• Cooling ModeCooling Mode
2 sec2 secStartStart Indoor FanIndoor Fan
Outdoor Fan 1Outdoor Fan 1
Outdoor Fan 2Outdoor Fan 2
Outdoor Fan 3Outdoor Fan 3
Outdoor Fan 4Outdoor Fan 4
Compressor 1Compressor 1
Compressor 2Compressor 2
Compressor 3Compressor 3
Compressor 4Compressor 4
15 sec15 sec
15 sec15 sec
15 sec15 sec
15 sec15 sec
2 sec2 sec
2 sec2 sec
2 sec2 sec
2 sec2 sec
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Sequence Control
• Heating ModeHeating Mode
2 sec2 secStartStart Indoor FanIndoor Fan
Outdoor Fan 1Outdoor Fan 1
Outdoor Fan 2Outdoor Fan 2
Outdoor Fan 3Outdoor Fan 3
Outdoor Fan 4Outdoor Fan 4
Compressor 1Compressor 1
Compressor 2Compressor 2
Compressor 3Compressor 3
Compressor 4Compressor 4
15 sec15 sec
15 sec15 sec
15 sec15 sec
15 sec15 sec
2 sec2 sec
2 sec2 sec
2 sec2 sec
2 sec2 sec
All 4 way valvesAll 4 way valves2 sec2 sec
Heater 1Heater 115 sec15 sec
Heater 2Heater 2
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Stage Differential Temperature Setting
1.51.5°C only valid for 2 & 3 compressors °C only valid for 2 & 3 compressors model.model.
For 4 compressors model, max 1.0°CFor 4 compressors model, max 1.0°C
Default SettingDefault Setting
Configuration SW3 SW4
0.5°C on off
1.0°C off on
1.5°C on on
Default off off
Model Diff. Temp. Setting
1 compressor Not applicable
2 compressors 1.5°C
3 compressors 1.0°C
4 compressors 0.5°C
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Balance Loading
• Cooling ModeCooling Mode
Troom °C
Ts+1.5
Ts+1.0
Ts+0.5
Ts
Ts-0.5
Ts-1.0
1 comp on
2 comp on
3 comp on
4 comp on
All comp off
3 comp off
2 comp off
1 comp off
1.0°C
0.50.5°°C Differential TemperatureC Differential Temperature
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Balance Loading
• Cooling ModeCooling Mode1.01.0°°C Differential TemperatureC Differential Temperature
Ts+3.0
Ts+2.0
Ts+1.0
Ts
Ts-1.0
1 comp on
2 comp on
3 comp on
4 comp on
All comp off
3 comp off
2 comp off
1 comp off
1.0°C
Troom °C
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Balance Loading
• Cooling ModeCooling Mode1.51.5°°C Differential TemperatureC Differential Temperature
Ts+3.0
Ts+2.0
Ts+1.5
Ts
Ts-1.0
1 comp on
2 comp on
3 comp on
All comp off
2 comp off
1 comp off
1.0°C
Troom °C
Ts+0.5
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Balance Loading
• HeatingHeating
Ts+1.5
Ts+0.51 comp on
2 comp on
3 comp on
4 comp on
4 comp off
3 comp off
2 comp off
1 comp off
1.0°CTs-0.5
Ts
0.50.5°°C Differential TemperatureC Differential Temperature
Ts+1.0
Troom °C
Ts-1.0
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Balance Loading
• HeatingHeating
Troom °C
Ts+1.5
Ts+0.5
Ts-2.5
1 comp on
2 comp on
3 comp on
4 comp on
4 comp off
3 comp off
2 comp off
1 comp off 1.0°CTs-1.5
Ts-0.5
Ts
1.01.0°°C Differential TemperatureC Differential Temperature
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Balance Loading
• HeatingHeating
Ts+1.5
Ts+0.5
Ts-2.5
1 comp on
2 comp on
3 comp on
3 comp off
2 comp off
1 comp off
1.0°CTs-1.5
Ts-1.0
Ts
1.51.5°°C Differential TemperatureC Differential TemperatureTroom °C
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7 days Programmable Timer
• Real-Time Clock (RTC) need to be setReal-Time Clock (RTC) need to be set- Press “CLOCK” to activate Set Clock Mode
- Press “MINUTES”, “HOUR” & “DAY” to set time of
present day
- Press “CLOCK” again to deactivate the Set Clock Mode
• 7-Days Timer7-Days Timer- Press “ON TIMER” to activate auto-ON Timer Mode
- Press “MINUTES”, “HOUR” & “DAY” to set time of the
week for automatic start running
- Press “ON TIMER” again to save the setting
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7 days Programmable Timer
- Press “OFF TIMER” to activate auto-OFF Timer Mode
- Press “MINUTES”, “HOUR” & “DAY” to set time of the
week for automatic stop running
- Press “OFF TIMER” again to save the setting
Press the “HOLD” key for 2-3 seconds until the word “TIMER ACTIVE” appears on thePress the “HOLD” key for 2-3 seconds until the word “TIMER ACTIVE” appears on the
LCD screenLCD screen..
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Auto Mode
• Operating mode depends on TOperating mode depends on Trr (Roo (Roo
mmtemperature & Ttemperature & Tss (Set temperature) (Set temperature)
Current Mode
Tr < = Ts – 2.5 oC
Compressor Cut – OUT Time >= 15 mins
Conditions Next Mode
COOLCOOL HEATHEAT
HEATHEAT
Current Mode
COOLCOOLTr < = Ts + 2.5 oC
Compressor Cut – OUT Time >= 15 mins
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Auto Mode
• 0.5 0.5 °C Differential TemperatureC Differential Temperature
Ts-1.0°
Ts-0.5°
Ts-1.5°
CoolCool
Ts
Ts+0.5°
Ts+1.0°
Ts+1.5°
1 comp on
2 comp on
3 comp on
4 comp on
3 comp off
2 comp off
1 comp off
Troom °C
1 comp on
Ts+2.0°
Ts+2.5°
2 comp on
3 comp on
4 comp on
1 comp off
2 comp off
3 comp off
all comp off
HeatHeatTs-2.0°
Ts-2.5°
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Auto Mode
• 1.0 1.0 °C Differential TemperatureC Differential Temperature
CoolCool
HeatHeat
Ts
Ts+1.0°
Ts+2.0°
Ts+3.0°
Ts-1.0°1 comp on
2 comp on
3 comp on
4 comp on
3 comp off
2 comp off
1 comp off
Troom°C
Ts-4.0°
Ts-3.0°
Ts-2.0°
1 comp on
Ts+4.0°
2 comp on
3 comp on
4 comp on
1 comp off
2 comp off
3 comp off
all comp off
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Auto Mode
• 1.5 1.5 °C Differential TemperatureC Differential Temperature
CoolCool
HeatHeat
Ts
Ts+1.0°
Ts+2.5°Ts+3.0°
Ts-1.0°1 comp on
2 comp on
3 comp on
2 comp off
1 comp off
Troom°C
Ts-4.0°
Ts-3.0°Ts-2.5°
1 comp on
Ts+4.0°
2 comp on
3 comp on
1 comp off
2 comp off
all comp off
Ts+1.5°
Ts-1.5°
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Cold Blast / Hot Spurt
• Cold BlastCold Blast- Working Set Temperature = User Set
Temperature - 2 °C
- Conditions remain until:
ALL compressor cut OFF
At least 1 compressor CUT-IN > 20 minutes
- Not available during Energy Saving or Auto Mode
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Cold Blast / Hot Spurt
• Hot SpurtHot Spurt- Working Set Temperature = User Set
Temperature + 2 °C
- Conditions remain until:
ALL compressor cut OFF
At least 1 compressor CUT-IN > 20 minutes
- Not available during Energy Saving or Auto Mode
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Hot Start / Hot Keep
• Hot StartHot Start- Conditions: At least 1 compressor CUT-IN
- ID fan depends on ID coil temperature
ID Fan Run – Any ID coil temperature >= 30 °C
ID Fan Stop – Any ID coil temperature =< 15 °C
• Hot KeepHot Keep- ALL compressor CUT-OUT / STOP
- ID fan depends on ID coil temperature
ID Fan Run – Any ID coil temperature >= 40 °C
ID Fan Stop – Any ID coil temperature =< 15 °C
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Self - Diagnostics
E01E01 Req. manual resetReq. manual reset E19E19 I/D coil sensor 4 shortI/D coil sensor 4 shortE02E02 Comp. 1 h/temp.(O/L)Comp. 1 h/temp.(O/L) E20E20 I/D coil sensor 1 openI/D coil sensor 1 openE03E03 Comp. 2 h/temp.(O/L)Comp. 2 h/temp.(O/L) E21E21 I/D coil sensor 2 openI/D coil sensor 2 openE04E04 Comp. 3 h/temp.(O/L)Comp. 3 h/temp.(O/L) E22E22 I/D coil sensor 3 openI/D coil sensor 3 openE05E05 Comp. 4 h/temp.(O/L)Comp. 4 h/temp.(O/L) E23E23 I/D coil sensor 4 openI/D coil sensor 4 openE06E06 Comp. 1 h/pre tripComp. 1 h/pre trip E24E24 O/D coil sensor 1 shortO/D coil sensor 1 shortE07E07 Comp. 2 h/pre tripComp. 2 h/pre trip E25E25 O/D coil sensor 2 shortO/D coil sensor 2 shortE08E08 Comp. 3 h/pre tripComp. 3 h/pre trip E26E26 O/D coil sensor 3 shortO/D coil sensor 3 shortE09E09 Comp. 4 h/pre tripComp. 4 h/pre trip E27E27 O/D coil sensor 4 shortO/D coil sensor 4 shortE10E10 Comp. 1 L/pre tripComp. 1 L/pre trip E28E28 O/D coil sensor 1 openO/D coil sensor 1 openE11E11 Comp. 2 L/pre tripComp. 2 L/pre trip E28E28 O/D coil sensor 2 open O/D coil sensor 2 open E12E12 Comp. 3 L/pre tripComp. 3 L/pre trip E30E30 O/D coil sensor 3 openO/D coil sensor 3 openE13E13 Comp. 4 L/pre tripComp. 4 L/pre trip E31E31 O/D coil sensor 4 openO/D coil sensor 4 openE14E14 Room sensor shortRoom sensor short E32E32 Comp. 1 de-iceComp. 1 de-iceE15E15 Room sensor openRoom sensor open E33E33 Comp. 2 de-iceComp. 2 de-iceE16E16 I/D coil sensor 1 shortI/D coil sensor 1 short E34E34 Comp. 3 de-iceComp. 3 de-iceE17E17 I/D coil sensor 1 short I/D coil sensor 1 short E35E35 Comp. 4 de-iceComp. 4 de-iceE18E18 I/D coil sensor 1 shortI/D coil sensor 1 short
Error Error
CodeCode
Error Error
CodeCodeDescriptionDescription DescriptionDescription
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Energy Saving
COOLCOOL
HEATHEAT
Troom°C
Ts+1
Ts+2
1 2t (hr)
Energy Saving on Energy Saving off
Troom
Ts
Ts-2
Ts-1
1 2t (hr)Ts
Energy Saving on Energy Saving off
Troom°C
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Protections
• Compressor High PressureCompressor High Pressure
- Any compressor has High Pressure Trip Error code displayed in LCD (E06/07/08/09)
Compressor does not CUT-IN for 3 minutes
- 3 times trip within 30 minutes, auto restart is not
possible
• Compressor High TemperatureCompressor High Temperature- Cool and Auto Cool Modes OD coil temperature for a particular compressor > 68 °C
This compressor and its OD fan will STOP.
ID fan continue to run.
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Protections
• Compressor Trip / Low RefrigerantCompressor Trip / Low Refrigerant - Minimum 5 minutes run time
- Tr – TIDcoil =< 3 °C
• ID Anti-Freeze Protection & Filter CheckID Anti-Freeze Protection & Filter Check- ID coil temperature =< 1 °C for at least 1 minute
- Compressor run time >= 10 minutes
- Compressor & OD Fan STOP Restart is possible only after
1. Minimum 3 minutes stop time 2. ID coil temperature >= 12 °C for at least 1 minute
3. Another operation mode is selected
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Protections
• Defrost condition will be met if:Defrost condition will be met if:
1hr0 2hrs
30’Time
To °C
+3
+2
0
-2
-4
-6
-8
A
C
B
Defrost mode if more than 3 minutes
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Protections
• Defrost will terminate if:Defrost will terminate if:- OD coil temperature > +10 °C or
- Maximum 10 minutes compressor run time
Maximum 20 minutes compressor run time for SQSIM01 boardMaximum 20 minutes compressor run time for SQSIM01 board
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Installation
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Ducted Split System
Main components: - a. Finned-tube heat exchanger coil (direct expansion)b. Drain panc. Blower fan and pulleyd. Drive motor and pulleye. V-beltf. External steel casing
7.5 hp – 75 hp (Cooling)7.5 hp – 50 hp (Heatpump)
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Ducted Split System
7.5 hp – 10 hp Capacity
1) Motor direct coupled to blower fan2) No v-belt and pulleys
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Ducted Split System
SB units can be installed in several ways depending on the duct system
Free return, Ducted supply
a) Ceiling space return
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b) Plant room return
Free return, Ducted supply
Ducted Split System
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Ducted Split System
Ducted return, Ducted supply
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Drain Pipe Installation
Note: SB is a draw-through unit, internal volume experience negative pressure, warm air may infiltrate into the unit, reduce cooling capacity
1) Prevent water leakage at pipe joint
2) Prevent air leakage through the drain pipe
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Drain Pipe Installation
• Drain trap when hung from the ceiling
Note:
Water accumulate and form U-trap to prevent air form being sucked into the unit
Height h required to maintain this trap depend on the internal static pressure of the unit
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Drain Pipe Installation
• Drain trap when installed on the floor
Note: Height h required to maintain this trap depend on the internal static pressure of the unit
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Drain Pipe Installation
Note: Do not allow the trap loop to be higher than the drain hole position of the unit
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Vertical Throw
Horizontal Throw
Ducted Split System
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Horizontal and vertical throw Convertible
Ducted Split System
A
B
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Ducted Split System
Standard Air ThrowStandard Air Throw
Std Air Throw Changeable?
MDB75B/D Horizontal NO
MDB100B/D Horizontal NO
MDB125B Horizontal YES
MDB125D Horizontal NO
MDB150B Horizontal YES
MDB150D Horizontal NO
MDB200B Horizontal YES
MDB200D Vertical YES
MDB250-500B/D Vertical YES
MDB600-750B Vertical Yes*
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Horizontal & Vertical ThrowHorizontal & Vertical Throw
Example of installation requiring a change in the air throw configurationExample of installation requiring a change in the air throw configuration
1)1)Supply air duct in the plant room is Supply air duct in the plant room is located at low level on the walllocated at low level on the wall
2)2) Supply air duct is ducted downwards Supply air duct is ducted downwards to the rooms belowto the rooms below
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Horizontal & Vertical ThrowHorizontal & Vertical Throw
Example of installation requiring a change in the air throw configurationExample of installation requiring a change in the air throw configuration
3)3)
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Horizontal & Vertical ThrowHorizontal & Vertical Throw
Changing Air flow configurations (Horizontal to Vertical)Changing Air flow configurations (Horizontal to Vertical)
1)1) Remove blower flangeRemove blower flange
2)2) Remove blower coverRemove blower cover
3)3) Exchange blower flange and blower cover positionsExchange blower flange and blower cover positions
4)4) Remove side panel and service panel to access blower fanRemove side panel and service panel to access blower fan
5)5) Remove V-belt from blower pulleyRemove V-belt from blower pulley
6)6) Remove the bolts holding the blowerRemove the bolts holding the blower
7)7) Rotate the blower 90°to the new positionRotate the blower 90°to the new position
8)8) Remove the motor and rotate the bracket by Remove the motor and rotate the bracket by 180°(place back motor)180°(place back motor)
9)9) Realign motor pulley and blower pulley, replace V-beltRealign motor pulley and blower pulley, replace V-belt
Note: Distance is larger for vertical configurationsNote: Distance is larger for vertical configurations
10) Place back panels and blower back to the flange10) Place back panels and blower back to the flange
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Horizontal & Vertical Horizontal & Vertical ThrowThrow
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Horizontal & Vertical Horizontal & Vertical ThrowThrow
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Roof Top
1) Roof Top units have ranges from 6 hp – 42 hp
Supply Air
Blower
Motor
Drain Pan
Outdoor
Coil
Pulley
V-BeltMotor
Compressor
Return Air
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Installation site
Methods of installation
• cushioned by rubber pads and seated on flat platform.
• seated on isolator springs mounted on concrete / steel structures.
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Installation site
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Installation site
• Concrete plinth must be bigger footprint
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Installation site
• Isolator springs for low vibration levels
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Installation site
Note: Roof shaft is made to specified size (Refer Figure 1-4 for air supply and return flange dimension)
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Installation site
• Selection of spring isolator based on unit weight distribution at the 4 corners.
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Installation site
• Good practices
• install roof top unit as far away possible from source of vibration.
• size isolator to correct stiffness, taken into consideration
• shock loads during start-up and shutdown
• static deflection
• isolators should be equally loaded and installed on level ground.
• diameter of isolator should be greater than compressed height and occupy wide footprint for stability.
• isolators should not be fully compressed
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Installation site
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Installation Clearances
RT60/80/100/120A(R)RT60/80/100/120A(R) RT150/200A(R)RT150/200A(R)
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Installation Clearances
RT250/300A(R)RT250/300A(R) RT360/420A(R)RT360/420A(R)
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Drain Pipe Installation
• Drain trap when installed on the floor
Note: Height h required to maintain this trap depend on the internal static pressure of the unit
Correct Not Correct
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Ducting
• All rooftop unit comes with 2 metal flanges
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Ducting
• For vertical air supply, recommended as shown
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Ducting
• Roof Top unit is connected to the duct through canvas joint to prevent vibration from the blower startup to be transmitted to the air duct
Canvas Joint Filter Slot
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Ducting
Fresh air intake can be taken in through a branch-out duct from the air return duct. Fresh air intake is about 10 – 15 %
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Ducting
For RT80/100/120/150/200A(R),For RT80/100/120/150/200A(R),conversion from side flow to down flow is possible.conversion from side flow to down flow is possible.
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DuctingFor RT80/100/120/150/200A(R),For RT80/100/120/150/200A(R),conversion from side flow to down flow is possible.conversion from side flow to down flow is possible.
Vertical
Horizontal
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Rooftop reconstruction from down flow to side flow
1. Unscrew top panel
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Rooftop reconstruction from down flow to side flow
2. Remove top panel
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Rooftop reconstruction from down flow to side flow
3. Unscrew service panel
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Rooftop reconstruction from down flow to side flow
4. Remove service panel
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Rooftop reconstruction from down flow to side flow
5. Loosen motor base
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Rooftop reconstruction from down flow to side flow
6. Slide up the motor base
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Rooftop reconstruction from down flow to side flow
7. Remove the V-belt
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Rooftop reconstruction from down flow to side flow
8. Unscrew the casing leg
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Rooftop reconstruction from down flow to side flow
9. Insert rubber sheet to protect coil assembly
Rubber sheet
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Rooftop reconstruction from down flow to side flow
10. Unscrew fan assembly
Unscrew
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Rooftop reconstruction from down flow to side flow
11. Remove fan assembly & remove casing leg
Casing Leg
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Rooftop reconstruction from down flow to side flow
12. Fan assembly
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Rooftop reconstruction from down flow to side flow
13. Unscrew & remove supply air cover (top)
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Rooftop reconstruction from down flow to side flow
14. Unscrew & remove side inlet cover (bottom)
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Rooftop reconstruction from down flow to side flow
15. Low intake
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Rooftop reconstruction from down flow to side flow
16. Cover low intake with low cover
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Rooftop reconstruction from down flow to side flow
17. Tighten low cover
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Rooftop reconstruction from down flow to side flow
18. Inlet duct
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Rooftop reconstruction from down flow to side flow
19. Cover the inlet duct with supply air cover
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Rooftop reconstruction from down flow to side flow
20. Tighten supply air cover
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Rooftop reconstruction from down flow to side flow
21. Install the fan assembly
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Rooftop reconstruction from down flow to side flow
22. Install the V-belt & tighten the motor base
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Rooftop reconstruction from down flow to side flow
23. Fix duct flange (bottom)
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Rooftop reconstruction from down flow to side flow
24. Fix duct flange (top)
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Rooftop reconstruction from down flow to side flow
25. Fix service (side) panel
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Rooftop reconstruction from down flow to side flow
26. Fix top panel
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Drive Package Selection
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Pulley & Belt
• Belt driven (Roof Top & Static Blower) • Motor rotates at a higher speed compare to blower
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Dm / Db = Nb / Nm --------------- Equation 1
L ~ 2C + 1.57(Db + Dm) --------------- Equation 2
Pulley & Belt
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Pulley & Belt
Example 1 (Motor & Pulley)
Given Dm = 5” and Db = 10”Nb = 800 rpm
Calculate Nm
Nm = (Db / Dm)*Nb = (10/5)*800 = 1600 rpm
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Pulley & Belt
Example 2 (V-belt Length)
Given Dm = 7” and Db = 10”C = 28”
Calculate L
L ~ 2C + 1.57(Db / Dm) ~ 2(28) + 1.57(10+7) = 82.69”
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Note: The slack of the belt can be adjusted by tensioning the motor bracket
Pulley & Belt
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Drive Package Selection
• Blower curves available in technical manual
SB200BSB200B SB300BSB300B
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Drive Package Selection
• Blower curves available in technical manual
RT60A(R)RT60A(R) RT80A(R)RT80A(R)
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Drive Package Selection
Pulley Data (Ducted Blower)
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Pulley Data (Ducted Blower)
Drive Package Selection
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Drive Package Selection
Range of Operation
1. Ability of motor drive to deliver the required power input to the blower
2. Prevention of frost forming-low load
3. Prevention of compressor tripping in heating mode
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Drive Package Selection
Pulley Data (Roof Top)
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Example
Model: SB250D2Supply Air Quantity: 8000 CFMExternal Static Pressure: 29 mmAq
Drive Package Selection
Step 1
Total Static Pressure = 46.5 mmAqInternal Static Pressure = 26 mmAqExternal Static Pressure = 20.5 mmAq
ESP 20.5 did not fulfill design requirement
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Drive Package Selection
Step 2
At 8000 CFM and 29 mmAq
Total Static Pressure = Internal Static Pressure + External Static Pressure= 26 mmAq + 29 mmAq= 55 mmAq
Design requirement needs 850 rpm, unit deliver about 700 rpm under same CFM
Step 3
Motor Pulley Size, Dm = 95 mmBlower Pulley Size, Db = 180 mmMotor RPM = 1440
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To obtain 850 rpm new blower pulley is needed
New blower pulley size Db = Motor Pulley Size x (Motor rpm / Blower rpm)= 95 x (1440/850)= 161 mm
Select blower pulley size of 160 mm
Blower rpm = Motor rpm x (Motor Pulley Size / Blower Pulley Size)= 1440 x (95/160)= 855 rpm
Step 4
V-belt length must be rechecked. (Horizontal air throw)
L ~ 2C + 1.57(Db + Dm) ~ 2(580) + 1.57(95 + 160) = 1560.35 mm
Drive Package Selection
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Thus we can use belt with length of 1600 mm
where, C = distance between centre of the two pulleys
Db = diameter of blower pulley
Dm = diameter of motor pulley
Drive Package Selection
Step 5
Motor power input about 3.5 kW, applying safety factor of 1.2 to account for losses= 3.5 × 1.2 = 4.2 kW (Select 5.5 kW motor)
Summary i) Motor = 5.0 kWii) Motor pulley size = 160 mmiii) V-belt size = 1600 mm
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Step 1
ExampleModel: RT100ASupply Air Quantity: 3800 CFMExternal Static Pressure: 150 Pa
Step 2
Total Static Pressure = Internal Static Pressure + External Static Pressure= 150 Pa + 150 Pa= 300 Pa
Drive Package Selection
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Design required point
1) 1200 rpm 2) motor output power below 1.5kW
Step 3
Motor Pulley Size, Dm = 114 mmBlower Pulley Size, Db = 152 mmMotor RPM = 1080
Drive Package Selection
Note: To obtain required rpm 1200, calculate new blower pulley while maintaining the motor pulley.
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New blower pulley size Db = Motor Pulley Size x (Motor rpm / Blower rpm)= 114 x (1080/1200)= 103 mm
Select blower pulley size of 100 mm
Blower rpm = Motor rpm x (Motor Pulley Size / Blower Pulley Size)= 1080 x (114/100)= 1231 rpm
Step 4
V-belt length must be rechecked.
L ~ 2C + 1.57(Db + Dm) ~ 2(184) + 1.57(114 + 100) = 703.98 mm
Drive Package Selection
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Drive Package Selection
Step 5
Motor power input has maintained within the current operating range of the standard unit's motor.
Summary i) Motor = 1.5 kWii) Motor pulley size = 100 mmiii) V-belt size = 704 mm
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Pulley Selection
• 2 types of recommended pulleysstandard V – pulleystaper lock pulleys
Standard V – pulleysrecommended NBK, Japan B – type (B1 & B2)
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Pulley Installation
Insert the bore thru the shaft of motor / blower
Using a mallet, slowly knock the pulley into shaft
Insert rectangular key into keyway to secure pulley.
Tighten the Allen key onto the shaft key
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Motor & Blower Size and Key Dimensions
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Motor & Blower Size and Key Dimensions
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General Troubleshooting
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Troubleshooting
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Noisy Operation
Type of noise - air noise- motor sound / vibration?
Source of Noise - indoor- worn bearing- loose / belt alignment- air too strong / high surface velocity- parts vibration
source of noise - outdoor- loose part - refrigerant overcharge- low suction pressure- condenser air flow- rubber absorber at the condenser base- partially clogged (system)
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Common causes of mechanical compressor failure
1) Refrigerant flood back2) Flooded start3) Slugging4) Overheating5) Loss of Oil
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Common causes of mechanical compressor failure
Refrigerant flood back
DetailLiquid refrigerant flow through the suction line during operation
Possible CauseLow evaporator load (poor heat transfer / lack of air circulation)
PreventionProper air flow; proper refrigerant charge
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Common causes of mechanical compressor failure
Overheating
DetailOil in compressor is heated to the point where it loses it’s ability to lubricate, breakdown oil chemically
Possible CauseHigh compression ratios (low suction pressure / high discharge pressure)
PreventionEnsure no blockages in system - loss of refrigerant charge; hot air short circuit
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Common causes of mechanical compressor failure
Loss of Oil
Possible CauseOil pump out during start up; no / little return; improper trap; poor piping
SymptomsExcessive noise / vibration; high ampere
PreventionProper pipe design – traps / minimum riser; correct pipe size and correct charge
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Thank YouThank You