as a multi boiler system up to 840.0 kw 17.0 to 105.0 … · viesmann vitodens 200-w gas condensing...

VIESMANN VITODENS 200-WGas condensing boiler

17.0 to 105.0 kWas a multi boiler system up to 840.0 kW

VITODENS 200-W Type WB2C

Wall mounted gas condensing boiler,with modulating MatriX cylinder burner for natural gas and LPGfor open or balanced flue operation

5822 432 GB 5/2011

Technical guide

Index

1. Vitodens 200-W 1.1 Product description ....................................................................................................... 41.2 Specification ................................................................................................................. 6

■ Vitodens 200-W, 45 and 60 kW ................................................................................ 7■ Vitodens 200-W, 80 and 105 kW .............................................................................. 10

2. Installation accessories 2.1 Product description ....................................................................................................... 13■ Installation accessories for the Vitodens 200-W, 45 and 60 kW ............................... 13■ Installation accessories for the Vitodens 200-W, 80 and 105 kW ............................. 23■ Installation accessories for multi boiler systems ....................................................... 24

3. DHW cylinder 3.1 Product description ....................................................................................................... 25

4. Design information 4.1 Siting, installation .......................................................................................................... 25■ Siting conditions for open flue operation (appliance type B) ..................................... 25■ Siting conditions for balanced flue operation (appliance type C) .............................. 25■ Operation of the Vitodens in wet areas ..................................................................... 26■ Electrical connection ................................................................................................. 26■ Gas connection ......................................................................................................... 27■ Minimum clearances ................................................................................................. 27■ Pre-installation for installing the Vitodens 200-W directly onto a wall (single boiler) 28■ Pre-installation, multi boiler system .......................................................................... 28

4.2 Condensate connection ................................................................................................ 34■ Condensate drain and neutralisation ........................................................................ 34

4.3 Hydraulic connection .................................................................................................... 36■ General information .................................................................................................. 36■ Expansion vessels .................................................................................................... 37■ Multi boiler systems .................................................................................................. 37■ Low loss header ........................................................................................................ 37

5. Control units 5.1 Vitotronic 100, type HC1B, for constant temperature operation ................................... 38■ Structure and functions ............................................................................................. 38■ Specification Vitotronic 100, type HC1B ................................................................... 39

5.2 Vitotronic 200, type HO1B, for weather-compensated operation ................................. 40■ Specification Vitotronic 200, type HO1B ................................................................... 41

5.3 Vitotronic 300-K, type MW2B for multi boiler systems .................................................. 42■ Cascade control unit for the Vitodens 200-W with Vitotronic 100 ............................. 42■ Structure and function ............................................................................................... 42■ Specification, Vitotronic 300-K .................................................................................. 44■ Delivered condition Vitotronic 300-K ......................................................................... 44

Index

2 VIESMANN VITODENS 200-W

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5.4 Vitotronic accessories ................................................................................................... 45■ Assignment to control unit types ............................................................................... 45■ Vitotrol 100, type UTA ............................................................................................... 45■ Vitotrol 100, type UTDB ............................................................................................ 46■ External extension H4 ............................................................................................... 46■ Vitotrol 100, type UTDB-RF ...................................................................................... 47■ Notes regarding room temperature hook-up (RS function) for remote control units . 47■ Information regarding the Vitotrol 200A and 300A .................................................... 47■ Vitotrol 200A ............................................................................................................. 47■ Vitotrol 300A ............................................................................................................. 48■ Room temperature sensor ........................................................................................ 49■ Mounting base for programming unit ........................................................................ 49■ Radio clock receiver .................................................................................................. 49■ Vitocom 100, type GSM ............................................................................................ 50■ Mixer extension kit with integral mixer motor ............................................................ 50■ Mixer extension kit for separate mixer motor ............................................................ 51■ Extension kit for one heating circuit with mixer in conjunction with Divicon heating

circuit distributor ........................................................................................................ 51■ Vitotronic 300-K extension for heating circuits with mixers 2 and 3 .......................... 52■ Extension kit for one heating circuit with mixer for the Vitotronic 300-K ................... 52■ Immersion thermostat ............................................................................................... 52■ Contact thermostat .................................................................................................... 53■ Immersion temperature sensor ................................................................................. 53■ Solar control module, type SM1 ................................................................................ 53■ Immersion temperature sensor ................................................................................. 54■ LON communication module ..................................................................................... 54■ LON connecting cable for data exchange between control units .............................. 55■ Extension of the connecting cable ............................................................................ 55■ Terminator (2 pce) .................................................................................................... 55■ KM BUS distributor ................................................................................................... 55■ Internal extension H1 ................................................................................................ 56■ Internal extension H2 ................................................................................................ 56■ Extension AM1 .......................................................................................................... 56■ Extension EA1 .......................................................................................................... 57

6. Appendix 6.1 Regulations / Directives ................................................................................................ 57■ Regulations and Directives ....................................................................................... 57

7. Keyword index .............................................................................................................................................. 59

Index (cont.)

VITODENS 200-W VIESMANN 3

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1.1 Product descriptionA Inox-Radial heat exchanger made from stainless steel – for high

operational reliability and a long service life. Large heating outputin the smallest of spaces

B Modulating MatriX cylinder burner for extremely clean combustionand quiet operation

C Variable speed combustion fan for quiet and economical opera-tion

D Gas and water connectionsE Digital boiler control unit

Vitodens 200-W wall mounted condensing boilers up to 105 kW areespecially suitable for installation in apartment buildings and commer-cial or public buildings. For these, the Vitodens 200-W offers an afford-able, space saving solution – either as a single unit up to 105 kW oras a cascade with up to eight boilers and a heating output up to 840kW.The Inox-Radial heat exchanger made from stainless steel offers highoutput in the tightest of spaces. This enables particularly efficient oper-ation with standard seasonal efficiency [to DIN] up to 98 % (Hs) [grosscv]/109 % (Hi) [net cv].The Vitotronic 300-K cascade control unit regulates up to four Vitodens200-W as a single heating centre. In this way, the boiler output is auto-matically matched to the heat demand. This means that, subject to theprevailing heat demand, either one boiler modulates or all four boilersoperate concurrently.For creating cascade systems, we offer perfectly matching systemcomponents, e.g. control units with up to four appliances, fully insula-ted hydraulic cascades and flue gas headers.

Recommended applicationsHigh heating output from a compact, user friendly wall mounted boiler,suitable for the following applications:■ Systems with few, large-demand consumers, e.g. fan heaters in

supermarkets/markets, workshops and industrial premises, nurser-ies, garages and DHW heating systems

■ Systems with several heating circuits for underfloor and/or staticradiators in apartment buildings, central heating plants for terracedhouses, office buildings and administration premises – particularlysuitable for attic heating centres

■ Heating of public buildings, such as sports centres and multi purposehalls, schools, kindergartens

■ Suitable for installation in basement boiler rooms, on single floors orin the attic

Benefits at a glance■ Option of cascade control with up to eight boilers with a rated heating

output from 45 kW to 840 kW■ Standard seasonal efficiency [to DIN] up to

98 % (Hs) [gross cv]/109 % (Hi) [net cv]

■ Durable and efficient through the Inox-Radial heat exchanger■ Modulating MatriX cylinder burner with a long service life thanks to

stainless steel MatriX mesh – resistant to high temperature loads■ Easy-to-operate Vitotronic control unit with plain text and graphic

display■ The programming unit part of the control unit can also be fitted on a

wall mounting base (accessory)■ Lambda Pro Control combustion controller for all gas types – saving

costs by extending the inspection intervals up to 3 years [in Ger-many]

■ Quiet operation through low fan speed

Delivered condition

Wall mounted gas condensing boiler with Inox-Radial heat exchanger,modulating MatriX cylinder burner for natural gas and LPG to DVGWCode of Practice G260 [Germany], plus wall mounting bracket.Fully plumbed and wired. White epoxy-coated casing.Packed separately:Vitotronic 100 for constant temperature modeorVitotronic 200 for weather-compensated operation.Preset for operation with natural gas. A conversion within gas groupsE/LL is not required. The conversion to LPG is made at the gas valve(a conversion kit is not required).

Multi boiler systemsMulti boiler systems for open flue operation with 2, 3 or 4 boilers.

Vitodens 200-W


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Installation with a self-supporting mounting frame in series andas a single block

Comprising:■ Hydraulic cascade■ Connection set for every boiler with:

– Connection lines formed to suit– Circulation pump (3-stage or high efficiency)– Ball valves– Drain & fill valve– Check valve– Gas shut-off valve– Safety valve

■ Thermal insulation■ Weather-compensated, digital cascade and heating circuit control

unit Vitotronic 300-K

■ Cascade communication module for each boiler■ Self-supporting mounting frame

NoteOrder circulation pumps for heating circuits and cylinder heating sep-arately.

Tested qualityCE designation according to current EC Directives

Meets the requirements for the "Blue Angel" certificate of environmen-tal excellence to RAL UZ 61.

Vitodens 200-W (cont.)


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1.2 Specification

Gas boiler, series B and C, category II2N3P II2N3P II2N3P II2N3P

Gas condensing boilerRated heating output range45 and 60 kW: Specification to EN 677. 80 and 105 kW: Specification to EN 15417.

TV/TR = 50/30 °C kW 17.0-45.0 17.0-60.0 30.0-80.0 30.0-105.0TV/TR = 80/60 °C kW 15.4-40.7 15.4-54.4 27.0-72.6 27.0-95.6Rated heat input kW 16.1-42.2 16.1-56.2 28.1-75.0 28.1-98.5Type WB2C WB2C WB2C WB2CProduct ID CE-0085BR0432IP rating IP X4D to EN 60529Gas supply pressure Natural gas mbar 20 20 20 20LPG mbar 50 50 50 50Max. permissible gas supply pressure*1 Natural gas mbar 25.0 25.0 25.0 25.0LPG mbar 57.5 57.5 57.5 57.5Power consumption (delivered condition) W 56 82 90 175Weight kg 65 65 83 83Heat exchanger capacity l 7.0 7.0 12.8 12.8Max. flow rateLimit for the use of hydraulic separation

l/h 3500 3500 5700 5700

Rated circulation water volume at TV/TR = 80/60 °C l/h 1748 2336 3118 4106Permiss. operating pressure bar 4 4 4 4Dimensions Length mm 380 380 530 530Width mm 480 480 480 480Height mm 850 850 850 850Gas connection R ¾ ¾ 1 1Connection valuesrelative to the max. load

with gas Natural gas E m3/h 4.47 5.95 7.94 10.42Natural gas LL m3/h 5.19 6.91 9.23 12.12LPG kg/h 3.30 4.39 5.88 7.74Flue gas parameters*2 Flue gas category to G 635/G 636 G52/G51 G52/G51 G52/G51 G52/G51

Temperature (at 30 °C return temperature) – at rated heating output °C 35 40 35 40– at partial load °C 33 35 33 35Temperature (at 60 °C return temperature) °C 65 70 65 70Mass flow rate Natural gas – at rated heating output kg/h 81.2 110.6 147.5 193.3– at partial load kg/h 31.1 31.1 55.8 55.8LPG – at rated heating output kg/h 78.2 106.7 143.8 185.4– at partial load kg/h 26.6 26.6 46.4 46.4Available draught Pa 250 250 250 250 mbar 2.5 2.5 2.5 2.5Standard seasonal efficiency [to DIN] at TV/TR = 40/30 °C % up to 98 (Hs) [gross cv]/109 (Hi) [net cv]Average condensate volume for natural gas and TV/TR = 50/30 °C l/day 14-19 23-28 25-30 35-40Internal diameter of the line to the expansion vessel DN 22 22 28 28Safety valve DN 22 22 22 22Condensate connection (hose nozzle) Ø mm 20-24 20-24 20-24 20-24

*1 If the gas supply pressure is higher than the maximum permitted value, install a separate gas pressure governor upstream of the system.*2 Calculation values for sizing the flue system to EN 13384.

Flue gas temperatures measured as gross values at 20 °C combustion air temperature.

The flue gas temperature at a return temperature of 30 °C is significant for the sizing of the flue system.The flue gas temperature at a return temperature of 60 °C is used to determine the application range of flue pipes with maximum permissibleoperating temperatures.



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Gas boiler, series B and C, category II2N3P II2N3P II2N3P II2N3P

Gas condensing boilerRated heating output range45 and 60 kW: Specification to EN 677. 80 and 105 kW: Specification to EN 15417.

TV/TR = 50/30 °C kW 17.0-45.0 17.0-60.0 30.0-80.0 30.0-105.0TV/TR = 80/60 °C kW 15.4-40.7 15.4-54.4 27.0-72.6 27.0-95.6Flue gas connection Ø mm 80 80 100 100Ventilation air connection Ø mm 125 125 150 150

Vitodens 200-W, 45 and 60 kW

Multi boiler systemsFor further details regarding multi boiler systems, see page 28.

40

100

200

752

1975

1700

850

380

875

1166

176GCB DF

EA

L

M

O

H

RK

N

240305

400

B

902 98

2

S

80

160480

P

A Expansion vessel connection G 1B Safety valveC Heating flow G 1½D Cylinder flow G 1½E Gas connection R ¾F Cylinder return G 1½G Heating return G 1½

H Cable entry area at the backK Connection sets (accessory)

Shown without thermal insulation (standard delivery, connectionsets)

L Without connection setsM With connection setsN Recommended dimension for a single boiler system



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O Recommended dimension for a multi boiler systemP Balanced flue connection with bend (accessory)

R Condensate drainS Top edge finished floor

NoteLay all required supply cables on site and route them into the boilernear H.

Variable speed high efficiency circulation pump in the heating circuit connection set (accessory)This circulation pump is a highly efficient pump with more than 50 %lower power consumption than conventional pumps.Matching the pump rate of the circulation pump to the individual systemconditions reduces the power consumption of the heating system.

Circulation pump VI Para 25/1-7Rated voltage V~ 230Power consumption W max. 70 min. 5

Variable speed (Δp constant or Δp variable), fully wired.

NoteWhen operating in multi boiler systems, select speed control Δp con-stant.

Residual head of the circulation pump

00 1000Flow rate in l/h

2000

Res

idua

l hea

d in

mba

r

100

200

300

400

500

600

700

3000

Max.

10

0

20

60

30

40

50

70

kPa

3-speed heating circuit pump in the heating circuit connection set (accessory)

Circulation pump VIRS 25/7-3Rated voltage V~ 230Rated current A max. 0.58 min. 0.30Capacitor µF 3.5Power consumption W Stage 1 62 Stage 2 92 Stage 3 132

3-stage, fully wired ready, to plug in.



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A B C

00 200 400 600 800 1000Flow rate in l/h

1200 1400 1600 1800 2000 2200 2400 2600

Res

idua

l hea

d in

mba

r

0kPa

10010

20020

30030

40040

50050

60060

70070

A Stage 1B Stage 2C Stage 3

Pressure drop on the heating water sideFor sizing an on-site circulation pump

0 500 1000 15000

100

200

300

400

500

600

Pres

sure

dro

p in

mba

r

0

10

20

30

40

50

60

kPa

2000 2500 3000 3500Flow rate in l/h

Circulation pump in the connection set for DHW cylinders

Pump type VI RS 25/6-3Voltage V~ 230Power consumption W max. 93

min. 46



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0 0,5 1 1,50

100

200

300

400

500

600

Hea

d in

mba

r

0

10

20

30

40

50

60

kPa

2 2,5 3 3,5Pump rate in m³/h

A B C



Multi boiler systemsFor further details regarding multi boiler systems, see page 28.

100

850

530

P

40

160 160

200

752

1975

1700

480

875

1300

E

L

M

O

C G

K

H

N

236

A

B

D F

A Safety valveB Expansion vessel connection G1C Boiler flow 7 42 mmD Cylinder flow 7 35 mmE Gas connection R 1

F Cylinder return 7 35 mmG Boiler return 7 42 mmH Connection sets (accessory)

Shown without thermal insulation (standard delivery, connectionsets)



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K Cable entry area at the backL Without connection set (accessories)M With connection set (accessories)

N Recommended dimension (single boiler system)O Recommended dimension (multi boiler system)P Condensate drain

NoteThe heating circuit connection set must be ordered separately.

NoteLay all required supply cables on site and route them into the boilernear K.

Variable speed high efficiency circulation pump in the heating circuit connection set (accessory)This circulation pump is a highly efficient pump with more than 50 %lower power consumption than conventional pumps.Matching the pump rate of the circulation pump to the individual systemconditions reduces the power consumption of the heating system.

Circulation pump VI Para 25/1-11Rated voltage V~ 230Power consumption W max. 140 min. 7

Variable speed (Δp constant or Δp variable), fully wired.

NoteWhen operating in multi boiler systems, select speed control Δp con-stant.


100

Res

idua

l hea

d in

mba

r


200

600

800

1000

300400500

700

900

2000 3000 4000

Max.

10

0

20

60

80

100

304050

70

90

kPa

3-speed heating circuit pump in the heating circuit connection set (accessory)

Circulation pump VI UPS 25-100Rated voltage V~ 230Power consumption W Stage 1 280 Stage 2 340 Stage 3 345

3-stage, fully wired ready, to plug in.



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100

Res

idua

l hea

d in

mba

r


200

600

800

1000

300400500

700

900

11001200

2000 3000 4000 50005000 6000

A B C10

0

20

60

80

100

304050

70

90

110120

kPa


NoteObserve further details regarding the use of a low loss header (seepage 37).If the residual head of the circulation pumps (available as accessories)is insufficient to overcome the following system pressure drop values,install an additional, external circulation pump on site.In such cases, use a low loss header.

Pressure drop on the heating water sideFor sizing a circulation pump on site (when connecting to DHW cylinderconnection set)

0 1000 2000 30000

100

200

300

400

500

600

Pres

sure

dro

p in

mba

r

0

10

20

30

40

50

60

kPa

4000 5000 6000 7000Flow rate in l/h



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2.1 Product description

Installation accessories for the Vitodens 200-W, 45 and 60 kW

Heating circuit connection set without circulation pump

Part no. 7245 738Connections G 1½Comprising:■ Tee with ball valve■ Boiler drain & fill valve■ Safety valve■ Gas shut-off valve with integral thermally activated safety shut-off

valve■ Connection G1 for expansion vessel

Heating circuit connection set with variable speed high efficiencycirculation pump

Part no. 7424 757Connections G 1½Comprising:■ Circulation pump■ 2 tees with ball valve■ Non-return valve■ 2 boiler drain & fill valves■ Safety valve■ Gas shut-off valve with integral thermally activated safety shut-off

valve■ Thermal insulation■ Connection G1 for expansion vessel

Heating circuit connection set with 3-stage circulation pump

Part no. 7247 341Connections G 1½Comprising:

■ Circulation pump■ 2 tees with ball valve■ Non-return valve■ 2 boiler drain & fill valves■ Safety valve■ Gas shut-off valve with integral thermally activated safety shut-off


Connection set for DHW cylinders

Part no. Z006 183Connections G 1½Comprising:■ Circulation pump■ 2 ball shut-off valves■ Non-return valve■ Cylinder temperature sensor

Ball valve

Part no. 7247 3731 pce G 1¼ with gasket and union nut.

Installation accessories


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Divicon heating circuit distributor

Construction and function■ Available with R ¾ , R 1 and R 1¼ connections.■ With heating circuit pump, check valve, ball valves with integral ther-

mometers and 3-way mixer or without mixer.■ Quick and simple installation through pre-assembled unit and com-

pact design.■ Low radiation losses through all-round thermal insulation shells.■ Low electricity costs and precise control characteristics through the

use of high efficiency pumps and optimised mixer curve.■ Also available with staged pumps.

■ The bypass valve for hydraulic balancing of the heating system isavailable as an accessory as a threaded component for inserting intothe prepared hole in the cast body.

■ The overflow valve may be required when using staged pumps toprevent the heating system running noisily. It is mounted onto theDivicon.

■ Individually wall mounted or with a double or triple manifold.■ Also available as kit. For further details, see the Viessmann pricelist.

For part no. in conjunction with the different circulation pumps, see Viessmann pricelist.The dimensions of the heating circuit distributor are the same, with or without mixer.

E

151

398

A

B

C

D

G 1½

98

120HV HR

a

b

HV HRHV HR

Divicon with mixer (wall mounting without thermal insulation and with-out mixer drive extension kit)

HR Heating returnHV Heating flowA Overflow valve (accessory for multi stage circulation pump)B Ball valves with thermometer (as programming unit)C Circulation pumpD Bypass valve (accessory)E Mixer-3

Heating circuit connec-tion

R ¾ 1 1¼

Flow rate (max.) m3/h 1.0 1.5 2.5a (female) Rp ¾ 1 1¼a (male) G 1¼ 1½ 2b (female) Rp ¾ 1 1¼b (male) G 1¼ 1¼ 2

Installation accessories (cont.)


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142

398

A

B

C

HV HR

98

120

D

G 1½

a

b

HV HR

Divicon without mixer (wall mounting, shown without thermal insula-tion)

HR Heating returnHV Heating flowA Overflow valve (accessory for multi stage circulation pump)B Ball valves with thermometer (as programming unit)C Circulation pumpD Ball valve

Heating circuit connec-tion

R ¾ 1 1¼

Flow rate (max.) m3/h 1.0 1.5 2.5a (female) Rp ¾ 1 1¼a (male) G 1¼ 1½ 2b (female) Rp ¾ 1 1¼b (male) G 1¼ 1¼ 2

Installation example: Divicon with triple manifold

HV HR120 120 120

ba

d

c

180 180

HV HR

(shown without thermal insulation)

HR Heating returnHV Heating flow

Dimensions Manifold with heating circuit connection R ¾ and R 1 R 1¼a 135 183b 535 583c 784 784d G 1¼ G 2



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Determining the required internal diameter

A

ΔT= 15K

ΔT= 20K

ΔT= 30K

ΔT= 5K

ΔT= 10K

CB

D

2.52.5

Mixer control characteristics

2.0

0.1

0.2

0.5

1.0

1.5

5.0

Flow

rate

in m

³/h

10 20 30 405310.1

0.2

0.5

1.0

1.52.0

5.0

Heating circuit outputin kW

A Divicon with mixer-3The identified operating ranges B to D provide optimum controlcharacteristics with the Divicon mixer:

B Divicon with mixer-3 (R ¾)Application range: 0 to 1.0 m 3/h

C Divicon with mixer-3 (R 1)Application range: 0 to 1.5 m 3/h

D Divicon with mixer-3 (R 1¼)Application range: 0 to 2.5 m 3/h

Example:Heating circuit for radiators with an output of ² = 11.6 kWHeating system temperature 75/60 °C (ΔT = 15 K) c Specific heat capacityµ Mass flow rate² Output´ Flow rate

² = µ · c · ΔT c = 1.163Wh

kg · K µ

²

c · ΔT=

kgh

´ =11600 W · kg · K

1.163 Wh · (75-60) K= 665

m³h

0.665

´ (1 kg ≈ 1 dm³)

Select the smallest possible mixer within the application range withvalue ´. Result of this example: Divicon with mixer-3 (R ¾)

Bypass valve

Part no. 7464 889To hydraulically balance the heating circuit with mixer. Inserted intothe Divicon.

Overflow valve Part no. 7429 738: R ¾Part no. 7429 739: R 1Part no. 7429 740: R 1¼Only with manually controlled heating circuit pump. Fitted onto theDivicon.



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ManifoldIncl. thermal insulationWall mounted with wall mounting bracket to be ordered separately.The connection between boiler and manifold must be made on site.

For 2 DiviconPart no. 7460 638 for Divicon R ¾ and R 1

HV HR HV HR120

495

HV HR120

135

120

A

180

G 1½ Rp ¾

A Connection option for expansion vesselHV Heating water flowHR Heating water return

Part no. 7466 337 for Divicon R 1¼

HV HR HV HR120

495

HV HR

420

183

120

A

180

G 2Rp ¾G 2


Pressure drop

00 0.5 1 1.5 2Flow rate in m³/h

0.51

1.52

32.5

3.5

2.5Pres

sure

drop

kP

a

A B

A Manifold for Divicon R ¾ and R 1B Manifold for Divicon R 1¼



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For 3 DiviconPart no. 7460 643 for Divicon R ¾ and R 1

120HV HR HV HR HV HR

120 120

784

HV HR

135

A

180 180

120G 1½ Rp ¾


Part no. 7466 340 for Divicon R 1¼

120HV HR HV HR HV HR

120 120

784

HV HR

183

A

180 180

420

G 2 Rp ¾G 2


Pressure drop

00 0.5 1 1.5 2Flow rate in m³/h

0.51

1.52

32.5

3.5

2.5Pres

sure

drop

kP

a

44.5

54.5

5.5

A B

A Manifold for Divicon R ¾ and R 1B Manifold for Divicon R 1¼

Wall mounting bracketPart no. 7465 894for individual DiviconWith screws and dowels.

a

for Divicon with mixer without mixera mm 151 142

Part no. 7465 439for manifoldWith screws and dowels.

a

for Divicon R ¾ and R 1 R 1¼a mm 142 167



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Low loss header

Part no. 7460 649Flow rate max. 4.5 m3/hIncluding thermal insulation and integral sensor well.The connection between boiler and low loss header must be made onsite.

120HV HR

447

275

G 1½

A

Rp 1B

350HV HR

A Sensor wellB Optional blow-downHV Heating water flowHR Heating water return

Pressure drop

Pres

sure

drop

kP

a

00 1 2 3 4 5Flow rate in m³/h

2468

101214

Part no. 7460 648Flow rate max. 7.5 m3/hIncluding thermal insulation and integral sensor well.The connection between boiler and low loss header must be made onsite.

G 2

420

523

295

A

HV HR

Rp 2

G 2

B420

HV HR

Pressure drop

Pres

sure

drop

kP

a

00 1 2 3 4 5Flow rate in m³/h

2468

10121416

6 7 8

Circulation pump curves and pressure drop on the heating water sideThe residual pump head results from the difference between the selec-ted pump curve and the pressure drop curve of the respective heatingcircuit distributor or further components (pipe assembly, distributoretc.).

The following pump diagrams show the pressure drop curves of thedifferent Dicivon heating circuit distributors.

Maximum flow rate for Divicon:



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■ with R ¾ = 1.0 m3/h■ with R 1 = 1.5 m3/h■ with R 1¼ = 2.5 m3/h

Example:Flow rate ´ = 0.665 m3/hSelected:Divicon with mixer R ¾ and circulation pump Wilo VIRS 25/4-3, pumpcurve 2, pump rate 0.7 m 3/h

Head of the relevant pumpcurve: 28 kPaDivicon pressure drop: 3.5 kPaResidual head: 28 kPa – 3.5 kPa = 24.5 kPa.

NoteFor further components (pipe assembly, distributor, etc.) determine thepressure drop and deduct it from the residual head.

Manually controlled heating circuit pumps

Wilo VIRS 25/4-3

min.1

Max. head 3

40

0

10

20

30

0

100

200

300

400

0 0.5 1.0 1.5 2.0 2.5Pump rate in m³/h

Pres

sure

dro

p/he

adm

bar

kPa

50500

2

AB

C

D

A Divicon R ¾ with mixerB Divicon R 1 with mixerC Divicon R 1¼ with mixerD Divicon R ¾, R 1 and R 1¼ without mixer

Wilo VIRS 25/6-3

Head min.1

Head max.3

40

0

10

20

30

0

100

200

300

400

0 0.5 1.0 1.5 2.0 2.5Pump rate in m³/h

Pres

sure

dro

p/he

adm

bar

kPa

50500

60600

2

AB

C

D

A Divicon R ¾ with mixerB Divicon R 1 with mixer

C Divicon R 1¼ with mixerD Divicon R ¾, R 1 and R 1¼ without mixer

Grundfos VIUPS 25-40

Head min.

Head max.

AB C

D

0

10

20

30

0

100

200

300

40400

0 0.5 1.0 1.5 2.0 2.5Pump rate in m³/h

Pres

sure

dro

p/he

adm

bar

kPa

A Divicon R ¾ with mixerB Divicon R 1 with mixerC Divicon R 1¼ with mixerD Divicon R ¾, R 1 and R 1¼ without mixer

Grundfos VIUPS 25-60

Max. head

Min. head

60600

40

0

10

20

30

0

100

200

300

400

0 0.5 1.0 1.5 2.0 2.5Pump rate in m³/h

Pres

sure

dro

p/he

adm

bar

kPa

50500

AB

C

D




2

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Heating circuit pumps regulated by differential pressureAccording to the [German] Energy Savings Order (EnEV), circulationpumps in central heating systems must be sized in accordance withcurrent technical rules. Circulation pumps in central heating systemswith rated output higher than 25 kW should be equipped and designedin such a way that the power consumption will be automaticallymatched to the operational (capacity) requirements in at least 3 stages,if no safety concerns relating to the boiler make demands to the con-trary.

In addition to the EnEV regulations, the use of regulated pumps is alsorecommended for smaller capacities.

Design informationThe use of differential pressure regulated heating circuit pumpsrequires heating circuits with variable flow rate, e.g. single line andtwin-line systems with thermostatic valves, underfloor heating withthermostatic or zone valves.

Wilo Stratos Para 25/1-7■ Very economical HE pump (in accordance with Energy Label A)

Operating mode: Constant differential pressure

DA

40

0

10

20

30

0

100

200

300

400

0 0.5 1.0 1.5 2.0 2.5Pump rate in m³/h

Pres

sure

dro

p/he

adm

bar

kPa

50500

60600

3.0 3.5 4.0

70700

B C

Δp-C

max.





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Operating mode: Variable differential pressure

DA

40

0

10

20

30

0

100

200

300

400

0 0.5 1.0 1.5 2.0 2.5Pump rate in m³/h

Pres

sure

dro

p/he

adm

bar

kPa

50500

60600

3.0 3.5 4.0

70700

Δp-V

max.

B C



Grundfos Alpha 2-60■ Very economical HE pump (in accordance with Energy Label A)■ with power consumption indication■ with Autoadapt function (automatic matching to the pipework)■ with night setback function

DA

B CE

F

G

H

K

L

M40

0

10

20

30

0

100

200

300

400

0 0.5 1.0 1.5 2.0 2.5Pump rate in m³/h

Pres

sure

dro

p/he

adm

bar

kPa

50500

60600


C Divicon R 1¼ with mixerD Divicon R ¾, R 1 and R 1¼ without mixerE Stage 1F Stage 2G Stage 3H Min. proportional pressureK Max. proportional pressureL Min. constant pressureM Max. constant pressure



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Installation accessories for the Vitodens 200-W, 80 and 105 kW

Heating circuit connection set with variable speed high efficiencycirculation pump

Part no. 7424 759Comprising:■ Circulation pump■ 2 ball valves with adaptors Ø 42 mm (locking ring fitting)■ Tee with ball valve■ Non-return valve■ Boiler drain & fill valve■ Safety valve■ Gas shut-off valve with integral thermally activated safety shut-off


Heating circuit connection set with 3-stage circulation pump

Part no. 7424 951Comprising:■ Circulation pump■ 2 ball valves with adaptors Ø 42 mm (locking ring fitting)■ Tee with ball valve■ Non-return valve■ Boiler drain & fill valve■ Safety valve■ Gas shut-off valve with integral thermally activated safety shut-off


Low loss headerFor flow rate up to 8 m3/hPart no. Z007 743Comprising:■ Low loss header with integral sensor well (50 mm long)■ Thermal insulation■ Immersion temperature sensor for the low loss header■ Quick-action air vent valve■ 2 adaptors Ø 42 mm (locking ring fitting)

364

160204

413

963

313

1078

863

Mounting panel for low loss header■ For floor mounting

Part no. 7346 787■ For wall mounting

Part no. 7346 788

Connection set for DHW cylinders

Part no. 7348 934Connections: Ø 35 mm (locking ring fitting)Comprising:■ Connecting lines for flow and return■ Cylinder temperature sensor



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Installation accessories for multi boiler systems

Hydraulic cascadesSee page 28.

Flue gas cascade (positive pressure)Comprising:■ Flue gas non-return device for each boiler■ Flue gas header■ End piece with condensate drain and siphon

A

C

B

B BB

A Flue gas headerB Flue gas non-return deviceC End piece with siphon

■ 2-boiler system installed in series– For the Vitodens 200-W, 17 to 45 kW: Part no. 7247 262– For the Vitodens 200-W, 17 to 60 kW: Part no. 7247 262– For the Vitodens 200-W, 30 to 80 kW: Part no. 7311 995– For the Vitodens 200-W, 30 to 105 kW: Part no. 7311 995

■ 3-boiler system installed in series– For the Vitodens 200-W, 17 to 45 kW: Part no. 7247 263– For the Vitodens 200-W, 17 to 60 kW: Part no. 7247 264– For the Vitodens 200-W, 30 to 80 kW: Part no. 7311 996– For the Vitodens 200-W, 30 to 105 kW: Part no. 7311 997

■ 4-boiler system installed in series– For the Vitodens 200-W, 30 to 105 kW: Part no. 7311 998



■ 4-boiler system installed as single block– For the Vitodens 200-W, 17 to 45 kW: Part no. 7454 138– For the Vitodens 200-W, 17 to 60 kW: Part no. 7454 138– For the Vitodens 200-W, 30 to 80 kW: Part no. 7454 139– For the Vitodens 200-W, 30 to 105 kW: Part no. 7454 139

■ 6-boiler system installed as single block– For the Vitodens 200-W, 30 to 105 kW: Part no. 7452 578

■ 8-boiler system installed as single block– For the Vitodens 200-W, 30 to 105 kW: Part no. 7452 579

For further technical details regarding the flue gas cascades, see thetechnical guide to Vitodens flue systems.



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3.1 Product descriptionFor details regarding DHW cylinders, see the technical guide to theVitodens up to 35 kW, or separate datasheets.

Design information

4.1 Siting, installation

Siting conditions for open flue operation (appliance type B)(Type B23 and B33)

In rooms where air contamination through halogenated hydrocar-bons can occur, such as hairdressing salons, printing shops, chemicalcleaners, laboratories, etc., install the Vitodens only as a balanced fluesystem.If in doubt, please contact us.Wall mounted boilers should not be installed in areas subject to verydusty conditions.A ventilation air filter is available as an accessory for operation duringthe building phase. This protects the appliance against excessive dustloads.The installation location must be kept free from frost and must be ade-quately ventilated.Provide a condensate drain and a discharge pipe for the safety valvein the installation room.The maximum ambient temperature of the system should not exceed35 ºC.If these instructions are not observed, any consequential loss directlyrelated to any of these causes is excluded from our warranty.

Vitodens 200-W from 60 kW and multi boiler systemsInstall boilers from 50 kW in accordance with the Combustion Order(FeuVo) [Germany] [or local regulations] in a separate installationroom. Fit the mains isolator outside the installation room.

Combustion air aperturesGas equipment with a total rated heating output in excess of 50 kWmust be provided with combustion air apertures leading to the outside.The cross-section should be at least 150 cm2 and should be 2 cm2

larger for each kW above 50 kW rated heating output. This cross-sec-tion may not be split over more than 2 apertures (observe FeuVo andTRGI 2008 point 5.5.4 [or local regulations]).

Example:Vitodens 200-W, 3 × 60 kW Total rated heating output 180 kW 150 cm2 + 130 × 2 cm2 = 410 cm2 or 2 × 205 cm2.The combustion air vents should be at least 410 cm2 or 2 × 205 cm2.

Multi boiler systems with pressurised flue systemsThe Vitodens 200-W multi boiler systems with common pressurisedflue systems are designed for open flue operation (type B).

For further details, see the technical guide on flue systems for theVitodens.

Installation room (up to 50 kW)

Permissible:■ Boiler installation on the same floor■ Adjacent rooms with interconnected room air supply (larders, base-

ments, utility rooms, etc.)■ Attic rooms, but only with adequate minimum chimney height to DIN

18160 – 4 m above inlet (negative pressure operation).

Not permissible:■ Stairwells and common hallways; exception: Detached and two-

family homes of low height (top edge of floor in the top storey <7 m above ground level)

■ Bathrooms and toilets without outside windows, with duct ventilation■ Rooms where explosive or flammable materials are stored■ Rooms ventilated mechanically or via individual duct systems to DIN

18117-1.

Observe all local fire regulations.

Connection on the flue gas side(for further details, see the technical guide "Flue systems for theVitodens")The connection piece to the chimney should be as short as possible.Therefore position the Vitodens as close to the chimney as possible.No special protective measures or clearances towards combustibleobjects, e.g. furniture, cartons or similar, need to be taken/observed.The surface temperatures of the Vitodens and the flue system do notexceed 85 ºC at any point.

ExtractorsWhen installing appliances with extraction to the outside (cookerhoods, extractor fans etc.), ensure that air extraction will not createnegative pressure inside the installation room. A return flow of flue gascould result if the ventilation system and the Vitodens were operatedsimultaneously. In such cases, install an interlock circuit.For this, internal extension H2 (accessory) can be used. This switchesthe extractors off when the burner is started.

Siting conditions for balanced flue operation (appliance type C)The Vitodens can be installed as appliance type C13x, C33x, C43x, C53x,C63x or C83x to TRGl 2008, for balanced flue operation, independentof the size and ventilation of the installation room.

It may, for example, be sited in recreation rooms, in other living spaces,in ancillary rooms without ventilation, in cupboards (open at the top)or recesses, without maintaining minimum clearances to combustibleparts, or in attic rooms (pitched attics and the long pane of the roof)where the balanced flue pipe can be directly routed through the roof.Since the flue pipe connection for balanced flue operation is surroun-ded by combustion air (coaxial pipe), no clearances towards combus-tible parts need to be maintained (for further details, see the technicalguide "Flue systems for the Vitodens").The installation room must be free from the risk of frost.Provide a condensate drain and a discharge pipe for the safety valvein the installation room.

DHW cylinder


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Electrical interlocks for extractors (extractor hoods, etc.) are notrequired with balanced flue operation.

Vitodens 200-W from 60 kWInstall boilers from 50 kW in a separate room in accordance with theCombustion Order (FeuVo) [Germany] [or local regulations]. Fit themains isolator outside the installation room.Appropriate ventilation air and extract air apertures are required inaccordance with TRGI (see the technical guide on flue systems for theVitodens).

Installation in a garageTests carried out by the Gaswärme-Institut e.V., Essen, have con-firmed that the Vitodens is suitable for installation in garages.When installing this boiler in garages, maintain a clearance betweenthe floor and the burner of at least 500 mm. Protect the boiler on sitewith a bracket or deflector against mechanical damage.

Operation of the Vitodens in wet areasThe Vitodens is approved for installation in wet areas (IP rating:IP X4 D, splashproof)

When installing the Vitodens in wet areas, observe the safety zonesand minimum wall clearances according to VDE 0100 [or local regu-lations]. The Vitodens 200-W may be installed in safety zone 1.

Electrical connectionThe power supply must comply with the requirements of your localpower supply utility and current VDE [or local] regulations. Protect the power cable with a fuse with a max. rating of 16 A.We recommend installing an AC/DC-sensitive RCD (RCD class B) forDC (fault) currents that can occur with energy efficient equipment.Make the power supply (230 V~, 50 Hz) via a permanent connection.Connect the supply cables and accessories at the terminals inside theboiler.Allow cables/leads in the shaded area to protrude at least 800 mm fromthe wall (see diagram):

40

200

752

B

A

A Reference point Vitodens top edgeB Area for power supply cables

Recommended leads/cables

NYM 3 G 1.5 mm2 2-core min. 0.75 mm2 4-core 1.5 mm2

or3-core 1.5 mm2 without green/yellowcore

– Power cables (also for accessories)– DHW circulation pump

– Extension AM1 or EA1– Outside temperature sensor– Vitotronic 200-H (LON)– Extension kit for heating circuit with mixer

(KM BUS)– Vitotrol 100, type UTDB (230 V)– Vitotrol 200A– Vitotrol 300A– Vitohome 300– Radio clock receiver

– Vitotrol 100, type UTDB-RF (230 V)– Vitotrol 100, type UTA

Interlock switchInstall an interlock for open flue operation if an extractor (e.g. cookerhood) is fitted in the room providing interconnected combustion airsupply.For this, the internal extension H2 (accessories) can be used. Thisswitches the extractors OFF when the burner is started.

Power supply for accessoriesThe power supply for accessories can be connected directly to thecontrol unit.This connection is switched by the system ON/OFF switch.If the total system current exceeds 6 A, connect one or more exten-sions via an ON/OFF switch directly to the mains supply.Where the boiler is installed in a wet area, the power supply connectionof accessories must not be made at the control unit.

Design information (cont.)


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Additional requirements when installing boilers with LPG opera-tion in rooms below ground levelAccording to TRF 1996 Vol. 2 – valid as of 1 September 1997 – anexternal safety solenoid valve is no longer required when installing theVitodens below ground level.

However, the high safety standard derived from the use of an externalsafety solenoid valve has proven valuable. We therefore recommendthe installation of an external safety solenoid valve when installing theboiler in rooms below ground level. This requires the internal extensionH1.

Gas connectionGas installations must only be carried out by a registered gas fitter.Connect and size the mains gas according to TRGI 2008 or TRF 1996[or local regulations].

Max. test pressure 150 mbar.We recommend the installation of a gas filter compliant with DIN 3386in the gas line.

Thermally activated safety shut-off valveAccording to paragraph 4, section 5 of the FeuVo 2008 [or local reg-ulations], thermally activated shut-off equipment must be installed ingas combustion equipment or in gas lines immediately upstream of thegas combustion equipment, which will shut off the gas supply if theexternal temperature exceeds 100 ºC. These valves must isolate thegas supply for at least 30 minutes up to a temperature of 650 ºC. Thisshould prevent the formation of explosive gas mixtures in the event ofa fire.The gas taps supplied with the Vitodens are equipped with integralthermally activated safety shut-off valves.

Sizing recommendation, gas flow limiterIn supply areas with HIB below 8.6 kWh/m3 and gas appliances com-pliant with category I2N, determine a fictitious rated heat input. Thisfictitious rated heat input results from the rated heat input (QNB) of theappliance, multiplied by a factor of 1.23 (ratio HIB 8.6/7.0). Select thegas flow limiter and size the pipework in accordance with the TRGI2008 [or local regulations] using this fictitious rated heat input.

Rated heating output range of theVitodens

Gas flow limiter

kW17.0-45.0 GS 1017.0-60.0 GS 1630.0-80.0 GS 1630.0-105.0 GS 16

The selection recommendation for the gas flow limiter does not waivethe requirement for sizing the pipework correctly.

Minimum clearancesMaintain a clearance of 700 mm in front of the Vitodens or the DHWcylinder for maintenance purposes.

Maintenance clearances to the l.h. or r.h. side of the Vitodens arenot required.



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Pre-installation for installing the Vitodens 200-W directly onto a wall (single boiler)An installation template is supplied with the Vitodens 200-W for thelocation of fixing holes for the wall mounting bracket and the locationof the flue pipe on the wall.Order connection sets separately for the connection of the heating cir-cuits and one DHW cylinder.

40422

480

Ø 10

752

200

A

D

B

F

E

C

A Reference point Vitodens top edgeB Installation template Vitodens C Area for supply cables.

Allow all cables/leads to protrude approx. 1200 mm from thewall.

D Recommended dimension: 1975 mmE Wall mounting bracketF Top edge finished floor

Installation in front of a wall with a self-supporting mountingframe (single boiler)The Vitodens can be mounted on the self-supporting mountingframe.

The mounting panel supplied with the boiler cannot then be used.

Pre-installation, multi boiler system

Hydraulic cascadeFlow and return collectors, optionally with low loss header, for multiboiler systems of 2 to 8 boilers in series or 4 to 8 boilers arranged in ablock formation. Heating circuit connections either on the right or left.

Order the low loss header or the heating circuit connecting kit as sep-arate accessories.



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Hydraulic cascade with low loss headerc

ba

hf

g

AB

100

E E

882

HV HR HV HR

kl

HV

HRe

d

CRP 1

D

D

Shown without the thermal insulation supplied

A Sensor well for flow temperature sensorB Air vent valveC DrainD Connectors for safety equipment Rp ½

E Connection accessories with circulation pumpHR Heating returnHV Heating flow

Boiler Num-ber

2x45 kW 2x80 kW 3x45 kW 3x80 kW 4x105 kW 6x 80 kW 8x 105 kW

2x60 kW 2x105 kW 3x60 kW 3x105 kW 6x 105 kWHeating circuit connection PN4/DN 80 80 80 80 100 100 100Boiler connection G 1½ 1½ 1½ 1½ 1½ 1½ 1½Max. flow rate m3/h 6.9 12.1 10.3 18.1 24.1 36.2 48.2Dimension a mm 805 805 805 805 1044 1044 1044 b mm 683 683 683 683 860 860 860 c mm 458 458 458 458 520 520 520 d mm 235 235 235 235 250 250 250 e mm 219 219 219 219 300 300 300 f mm 168 168 168 168 168 168 168 g mm 343 343 343 343 343 343 343 h mm 2110 2110 2690 2690 3491 4651 5811 k mm 430 430 430 430 430 430 430 l mm 595 595 595 595 595 595 595



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Boiler Number (2x2) 45 kW (2x2) 80 kW (2x3) 80 kW (2x4) 105 kW (2x2) 60 kW (2x2) 105 kW (2x3) 105 kW

Heating circuit connection PN4/DN 80 100 100 100Boiler connection G 1½ 1½ 1½ 1½Max. flow rate m3/h 13.8 24.1 36.2 48.2Dimension a mm 805 1044 1044 1044 b mm 683 860 860 860 c mm 458 520 520 520 d mm 235 250 250 250 e mm 219 300 300 300 f mm 168 168 168 168 g mm 343 343 343 343 h mm 2112 2331 2911 3491 k mm – – – – l mm – – – –

Low loss header■ DN 80

For installing 2- and 3-boiler systems in series up to 315 kW and 4-boiler systems in block formation up to 240 kW.Part no. Z010 305

■ DN 100For installing 4- and 6-boiler systems in series up to 480 kW and 4-boiler systems in block formation up to 420 kW.Part no. Z010 306

■ DN 100For installing 6- and 8-boiler systems in series up to 630 kW, and 6-and 8-boiler systems in block formation up to 480 kW.Part no. Z010 307

Comprising:■ Low loss header with integral sensor well■ Thermal insulation■ Connection lines for hydraulic cascades with Rp ½ connections for

safety and control equipment■ Air vent valve■ Drain valve

Hydraulic cascade without low loss header

ba

A

HR

HV

HV HR HV HR

C C

def

c

100

RP 1

B

B


A Heating circuit connecting kitB Connectors for safety equipment Rp ½

C Connection accessories with circulation pump



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HR Heating returnHV Heating flow

Boiler Number 2x45 kW 2x80 kW 3x45 kW 3x80 kW 4x105 kW 6x 80 kW 8x 105 kW 2x60 kW 2x105 kW 3x60 kW 3x105 kW 6x 105 kW

Heating circuitconnection

PN4/DN 65 65 65 65 80 100 100

Boiler connec-tion

G 1½ 1½ 1½ 1½ 1½ 1½ 1½

Max. flow rate m3/h 6.9 12.1 10.3 18.1 24.1 36.2 48.2Dimension a mm 343 343 343 343 343 343 343 b mm 168 168 168 168 168 168 168 c mm 2110 2331 2690 2690 3491 4651 5811 d mm 430 430 430 430 430 430 430 e mm 555 555 555 555 555 555 555 f mm 440 590 440 590 590 590 590

Boiler Number (2x2) 45 kW (2x2) 80 kW (2x3) 80 kW (2x4) 105 kW (2x2) 60 kW (2x2) 105 kW (2x3) 105 kW

Heating circuit con-nection

PN4/DN 80 100 100 100

Boiler connection G 1½ 1½ 1½ 1½Max. flow rate m3/h 13.8 24.1 36.2 48.2Dimension a mm 343 343 343 343 b mm 168 168 168 168 c mm 2110 2331 2911 3491 d mm – – – – e mm – – – – f mm – – – –

Heating circuit connecting kit■ DN 65

For installation in series of 2- and 3-boiler systems up to 315 kW.Part no. 7453 093

■ DN 80For installing 4- and 6-boiler systems in series up to 480 kW and 4-boiler systems in block formation up to 420 kW.Part no. 7453 094

■ DN 100For installing 6- and 8-boiler systems in series up to 630 kW, and 6-and 8-boiler systems in block formation up to 480 kW.Part no. 7453 095

Comprising:■ Connection lines for hydraulic cascades with Rp ½ connections for

safety and control equipment■ Thermal insulation



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Installation in series with flue gas cascade

200 1500

F FA D

678 678

1750

a

760

C B

580

430

cE

C

HVHR

b


A Flue gas cascadeB VitodensC Vitotronic 300-K (can be fitted either to the left or the right)

The total length of all BUS cables (on site) should not exceed50 m.

D Self-supporting mounting frameE Hydraulic cascadeF Flue gas cascade mounted on the ceilingHR Heating returnHV Heating flow

NoteSecure the flue gas cascade with suitable means.Suspension from the ceiling is recommended. Observe the max. dis-tance between fixing points F.

For details regarding the flue gas cascade, see page 24 and the tech-nical guide on flue systems.For further details regarding the hydraulic cascade, see page 28.

Number of boilers 2x45 kW 2x80 kW 3x45 kW 3x80 kW 4x105 kW 6x80 kW 8x105 kW 2x60 kW 2x105 kW 3x60 kW 3x105 kW 6x105 kW

a mm 176 176 207 207 237 387 447b mm 301 323 301 323 366 406 406c mm 595 595 595 595 656 696 696

Multi boiler system standard delivery■ Vitodens 200-W (2 to 8 boilers)■ Additional boiler coding card for multi boiler system■ Vitotronic 300-K cascade control unit■ Cascade communication module for each boiler■ Immersion temperature sensor■ Self-supporting mounting frame

■ Hydraulic cascade with thermal insulation■ Connection accessory with circulation pumps (3-stage or high effi-

ciency) and thermal insulation

Accessories (subject to order)■ Low loss header in connection lines and thermal insulation

or■ Heating circuit connecting kit with thermal insulation



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Installation in block formation with a flue gas cascade

a17

50

680 680

1500

b c

200 F F

A D

C B

E760

C

580

HVHR


A Flue gas cascadeB VitodensC Vitotronic 300-K (can be fitted either to the left or the right)

The total length of all BUS cables (on site) should not exceed50 m.

D Self-supporting mounting frameE Hydraulic cascadeF Flue gas cascade mounted on the ceilingHR Heating returnHV Heating flow

NoteSecure the flue gas cascade with suitable means.Suspension from the ceiling is recommended. Observe the max. dis-tance between fixing points F.

For details regarding the flue gas cascade, see page 24 and the tech-nical guide on flue systems.For further details regarding the hydraulic cascade, see page 28.

Boiler (2x2) 45 kW (2x2) 80 kW (2x3) 80 kW (2x4) 105 kW (2x2) 60 kW (2x2) 105 kW (2x3) 105 kW

a mm 176 176 207 237b mm 680 843 843 843c mm 1350 1422 1422 1422

Multi boiler system standard delivery■ Vitodens 200-W (4 to 8 boilers)■ Additional boiler coding card for multi boiler system■ Vitotronic 300-K cascade control unit■ Cascade communication module for each boiler■ Immersion temperature sensor■ Hydraulic cascade with thermal insulation

■ Self-supporting mounting frame■ Connection accessory with circulation pumps (3-stage or high effi-

ciency) and thermal insulation

Accessories (subject to order)■ Low loss header in connection lines and thermal insulation

or■ Heating circuit connecting kit with thermal insulation



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4.2 Condensate connectionRoute the condensate drain pipe with a constant fall.Route the condensate from the flue system (if equipped with a drain),together with the boiler condensate directly or (if installed) via a neu-tralising system (accessory) to the public sewage system.

NoteA pipe vent valve must be installed between the siphon and the neu-tralising system.

A

B


A Drain hose (standard delivery for the Vitodens)B Drain outlet kit (accessories)

A

B


A Drain hose (standard delivery for the Vitodens)B Drain outlet kit (accessories)

Condensate drain and neutralisationDrain the condensate created during the heating operation in the con-densing boiler and in the flue pipe in accordance with appropriate reg-ulations. During gas combustion, the condensate will have a pHbetween 4 and 5.Code of Practice ATV-DVWK-A 251 "Condensate from condensingboilers", which is generally based on the local waste water regulations[in Germany], defines the conditions for draining condensate fromcondensing boilers into the public sewage system.The composition of condensate drained from Vitodens condensingboilers meets the requirements specified in Code of Practice ATV-DVWK-A 251.The condensate drain pipe to the sewer connection must be able tobe inspected.It must be installed with a continuous fall and must contain a stenchtrap. Also provide a suitable facility for sampling.Condensate drain pipes must only be made from corrosion-resistantmaterials (e.g. reinforced hose).Never use any galvanised materials or those containing copperfor pipes, connection pieces etc. A siphon is installed in the condensate drain to prevent flue gasesescaping.Local waste water regulations and/or specific technical circumstancesmay specify designs that vary from those described in the aboveCodes of Practice.It is advisable to contact your local authority responsible for wastewater management prior to installation, to find out about local regula-tions.

Condensate from gas combustion equipment up to 200 kW com-bustion outputUp to a rated heating output of 200 kW, the condensate from a gascondensing boiler can generally be introduced into the public sewagesystem without prior neutralisation.Also ensure that your domestic drainage systems are made frommaterials that are resistant to acidic condensate.

According to Code of Practice ATV-DVWK-A 251, these materialsinclude:■ Clay pipes■ Hard PVC pipes■ PVC pipes■ PE HD pipes■ PP pipes■ ABS/ASA pipes■ Stainless steel pipes■ Borosilicate pipes

Neutralising system

A

C

B

A Condensate drainB Neutralising systemC Ventilation via the roof



4

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The Vitodens can (if required) be supplied with a separate neutralisingsystem (accessory). Any condensate is piped to and treated in theneutralising system.The condensate drain pipe to the sewer connection must be able tobe inspected. It must be installed with a fall and stench trap on thesewer side, and must provide a suitable facility for sampling.Install a condensate lifting pump if the Vitodens has been installedbelow the waste water anti-flooding level.Condensate lifting pumps are available as accessories (see the Vitosetpricelist).Since the consumption of neutralising granulate depends on the oper-ating mode of the system, determine the required top-up amount dur-ing the first year of operation by regular checks. It is feasible that onefill may last longer than 12 months.

Neutralising system for single boiler systems with 45 and 60 kWPart no. 9535 742

400 DN 40

145

Neutralising system for single boiler systems with 80 and 105 kW, and multi boiler systemsPart no. 7441 823

410421

11016

5

140

230

CBA 70

A Inlet (DN 20)B Outlet (DN 20)C Overflow aperture

Condensate lifting system

Part no. 7374 796Automatic condensate lifting system for condensate with a pH value≥ 2.7 from oil and gas condensing boilers.Components:■ Condensate container 0.5 l■ Shaftless permanent magnet ball motor pump■ Control unit for pump operation, display of operating conditions and

fault messages■ 2 m long power cable with plug■ Two 7 24 mm connection apertures for condensate inletThe standard delivery comprises:■ 6 m long drain hose 7 14 x 2 mm■ Non-return valve

2000

90

168

148

118

A B C

A Condensate inletB Condensate inlet with drain plugC Condensate drain

SpecificationRated voltage 230 V~Rated frequency 50 HzPower consumption 20 W



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IP rating IP 44 Protection class F

Permissible medium temperature +60 °CMax. head 45 kPaMax. capacity 450 l/hZero volt contact N/C, breaking capacity

230 VA

4.3 Hydraulic connection

General information

System designViessmann condensing boilers can generally be installed in any fullypumped hot water heating system (sealed unvented system). Connection sets with an integral circulation pump are available asaccessories.Minimum system pressure 1.0 bar.The boiler water temperature is limited to 82 ºC.To keep distribution losses as low as possible, we recommend sizingthe heat distribution system for a maximum flow temperature of70 ºC.

Chemical anti-corrosion agentsCorrosion is generally avoided in correctly installed and operatedsealed unvented heating systems.Never use chemical anti-corrosion agents.Some manufacturers of plastic pipes recommend the use of chemicaladditives. In such cases, only use anti-corrosion agents offered by theheating trade that have been approved for boilers with DHW heatingvia single-walled heat exchangers (instantaneous water heater orDHW cylinder).For this, observe the VDI Directive 2035 [or local regulations].

Heating circuitsFor heating systems with plastic pipes, we recommend the use ofimpermeable pipes to prevent the diffusion of oxygen through the pipewalls.Provide system separation in heating systems with plastic pipes to DIN4726 that are permeable to oxygen. We supply a separate heatexchanger for this.Install a sludge separator in underfloor heating systems and systemswith a large water content; see the Viessmann Vitoset pricelist.Even with condensing boilers, connect underfloor heating systems andheating circuits with a very large water content (>15 l/kW) to the boilervia a 3-way mixer; see technical guide "Control of underfloor heatingsystems" or the relevant sample applications.Install a temperature limiter in the flow of the underfloor heating circuitto limit the maximum temperature. Observe the requirements of DIN18560-2 [or local regulations].

Plastic pipework for radiatorsWe also recommend the installation of a temperature limiter to restrictthe maximum temperature of plastic pipes in heating circuits with radi-ators.

Safety valveA safety valve in accordance with TRD 721 is part of the heating circuitconnection set (accessory) (opening pressure 4 bar).Route the discharge pipe in accordance with EN 12828 into a drainoutlet (drain outlet kit available as an accessory). The drain outletincorporates a siphon as a stench trap.

Low water indicatorAccording to EN 12828, a low water indicator can be omitted for boilersup to 300 kW, as long as heating can be reliably prevented in the caseof water shortage.Viessmann Vitodens boilers are equipped with a low water indicator(boil-dry protection). Tests have verified that the burner will be auto-matically switched off in the event of water shortage due to a leak inthe heating system and simultaneous burner operation, before theboiler or the flue system reach unacceptably high temperatures.

Attic heating centreThe installation of a low water indicator specified as compulsory to EN12828 is not required when installing the Vitodens in an attic heatingcentre.The Vitodens condensing boilers are protected against water shortagein accordance with EN 12828.

Water quality/Frost protectionUnsuitable fill and top-up water increases the level of deposits andcorrosion and may lead to boiler damage.Regarding the quality and volume of heating water, incl. fill and top-upwater, observe VDI 2035.■ Thoroughly flush the entire heating system prior to filling it with water.■ Only use fill water of potable water quality.■ Fill and top-up water with a water hardness in excess of the following

values must be softened, e.g. with the small softening system forheating water (see the Viessmann Vitoset pricelist):

Total permissible hardness of the fill and top-up waterTotal heatingoutput

Specific system volume

kW < 20 l/kW ≥ 20 l/kW to< 50 l/kW

≥ 50 l/kW

≤ 50 ≤ 3.0 mol/m3

(16.8 °dH)≤ 2.0 mol/m3

(11.2 °dH)< 0.02 mol/m3

(0.11 °dH)> 50 to ≤ 200 ≤ 2.0 mol/m3

(11.2 °dH)≤ 1.5 mol/m3

(8.4 °dH)< 0.02 mol/m3

(0.11 °dH)> 200 to≤ 600

≤ 1.5 mol/m3

(8.4 °dH)≤ 0.02 mol/m3

(0.11 °dH)< 0.02 mol/m3

(0.11 °dH)> 600 < 0.02 mol/m3

(0.11 °dH)< 0.02 mol/m3

(0.11 °dH)< 0.02 mol/m3

(0.11 °dH)

■ For systems with a specific system volume in excess of 20 litres/kWheating output, use the output of the smallest boiler in multi boilersystems.

■ An antifreeze additive suitable for heating systems can be added tothe fill water. The antifreeze manufacturer must verify its suitability,since otherwise damage to gaskets and diaphragms can occur aswell as noise during heating operation. Viessmann accepts no lia-bility for damage or consequential damage resulting from these cau-ses.

When engineering the system, observe the following:■ Install shut-off valves in different sections. This prevents the need

for draining all the heating water in the case of repairs or systemexpansion.

■ In systems > 50 kW, install a water meter to record the volume ofthe fill and top-up water. Record the amount of water filled into thesystem and the water hardness.

Operating information:■ Commission the system step by step, starting with the lowest boiler

output and a high heating water flow rate. This prevents a localisedconcentration of limescale deposits on the boiler heating surfaces.

■ In multi boiler systems, start all boilers simultaneously to prevent theentire limescale deposit settling in the heat transfer area of just oneboiler.

■ During expansion or repair work, only drain the necessary pipeworksections.



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■ Where water treatment is required, treat even the first fill of the heat-ing system prior to commissioning. This also applies to any subse-quent filling, e.g. when adding top-up water, after a repair or aftersystem expansion.

■ Filters, dirt traps and other discharge or separating facilities in theheating water circuit must be checked, cleaned and activated morefrequently after commissioning or recommissioning, and later on asrequired, subject to the water treatment applied (e.g. water soften-ing).

Installation examplesFor installation examples for the Vitodens 200-W, see "System exam-ples".

Expansion vesselsIn accordance with EN 12828, water heating systems must be equip-ped with an expansion vessel.

The size of the expansion vessel is subject to the heating systemspecification and should be checked in each case.

Multi boiler systemsWe recommend the installation of a low loss header in multi boilersystems. For this, order the low loss header that is available as anaccessory. See page 28 and the Viessmann pricelist.Losses resulting from the use of third party low loss headers are exclu-ded from our liability.On-site safety equipment should comply with EN 12828.

As an alternative to the low loss header, a suitably sized plate heatexchanger may be used to provide system separation. In that case,the flow temperature sensor should be arranged on the secondary sideof the plate heat exchanger. See the following system example.

M M

A A

A Flow temperature sensor

Information on sizing the plate heat exchanger:■ The pressure drop in the plate heat exchanger must be lower than

the lowest pressure drop of connected heating circuits.■ Fit a dirt trap on the secondary side of the plate heat exchanger.■ When sizing, take the temperature differential of the plate heat

exchanger into account (max. flow temperature in a multi boiler sys-tem with Vitodens 200-W: 80 °C)

Low loss header

Application

Design rules for system hydraulics:■ When balancing the low loss header, adjust the flow rate on the

equipment side to approx. 10 to 30 % lower than the flow rate on thesystem side (reducing the return temperature).

■ The low loss header should be sized for the max. flow rate that mayoccur in the system as a whole.

The low loss header separates the heat source (boiler circuit) from thedownstream heating circuits.Install a low loss header if the maximum flow rate in an individual caseis greater than the values shown in the table below.

Boiler Max. flow rate l/h

Vitodens 200-W, 17 - 45 kW 3500Vitodens 200-W, 17 - 60 kW 3500Vitodens 200-W, 30 - 80 kW 5700Vitodens 200-W, 30 - 105 kW 5700

We recommend installing a low loss header if the minimum flow rateslisted in the table below cannot be guaranteed.

Boiler Min. flow rate l/h

Vitodens 200-W, 17 - 45 kW 450Vitodens 200-W, 17 - 60 kW 450Vitodens 200-W, 30 - 80 kW 1300Vitodens 200-W, 30 - 105 kW 1300



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For installation schemes in conjunction with low loss headers, see therelevant sample application in the "System examples" document.

Boiler circuitThe circulation pump in the Vitodens must be able to supply therequired water volume against the (mostly low) pressure drop of theboiler circuit; the pressure drop of the low loss header is negligible.Subject to the water volume circulating in the boiler circuit, the respec-tive residual head may be determined for sizing the internal pipe diam-eters using the pump diagram; alternatively the variable speed pumpcan be adjusted accordingly.

Heating circuitThe heating circuit pumps to be installed on site must be able to deliverthe water volume in the heating circuits against their pressure drop,and must be sized accordingly.

Principle of operation

T1 T3

T2 T4

VsecondaryVprimary

Vprimary Heating water volume, boiler circuit (approx. 10 - 30 %less than Vsecondary)

Vsecondary Heating water volume, heating circuitT1 Flow temperature, boiler circuitT2 Return temperature, boiler circuitT3 Flow temperature, heating circuitT4 Return temperature, heating circuitQprimary Amount of heat supplied by the boilerQsecondary Amount of heat transferred by the heating circuit

Vprimary < Vsecondary T1 > T3 T2 ≃ T4 Qprimary = Qsecondary

NoteSuitable thermometers in the flow and return of the low loss headermake adjustments easier.

Low loss header in conjunction with Divicon heating circuit dis-tributorFor description and specification, see page 14.

Low loss header for the Vitodens 200-W with 45 and 60 kW fromthe Vitoset rangeSee the "Vitoset" pricelist.

ed

c

ba

HV

HR

KV

KR

HR Heating returnHV Heating flowKR Boiler returnKV Boiler flow

Flow rate max.

m3/h 4 4 8 10 18

Connections - Female thread Rp 1 - Male thread R 1¼ 2 - Flange DN 65 80Dimension

a mm 500 500 800 1400 1450

b mm 360 360 650 1000 1000 c mm 270 270 550 1000 1000 d mm 80 80 120 160 200 e mm 50 50 80 80 120

Low loss header for the Vitodens 200-W with 80 and 105 kWSee page 23.

Low loss header with distributor/manifold for multi boiler sys-tems with Vitodens 200-WFor description and specification, see page 28.

Control units

5.1 Vitotronic 100, type HC1B, for constant temperature operation

Structure and functions

Modular designThe control unit is integrated into the boiler.The control unit comprises a standard unit, electronics modules and aprogramming unit.

Standard unit:■ ON/OFF switch■ Optolink laptop interface■ Operating and fault display■ Reset button■ Fuses



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Programming unit:■ Easy operation through display with large font and depiction with

good contrast■ Removable programming unit; can be mounted as option on the wall

with separate accessory■ User prompts through pictographs■ Control keys for:

– Navigation– Confirmation– Adjustments/menu

■ Setting the:– Boiler water temperature– DHW temperature– Heating program– Codes– Actuator tests– Test mode

■ Displaying:– Boiler water temperature– Set DHW temperature– Operating details– Diagnostic details– Fault messages

Functions■ Electronic boiler control unit for operation at a constant boiler water

temperature■ Room temperature-dependent operation requires a Vitotrol 100,

type UTA, UTDB or UTDB-RF (according to EnEV [Germany])■ Heating system frost protection■ Anti-seizing pump protection■ Integral diagnostic system■ Cylinder thermostat with priority■ Control of solar DHW heating and central heating backup in con-

junction with the solar control module, type SM1■ Auxiliary function for DHW heating (short-term heating to a higher

temperature)

■ Maintenance display■ External starting and blocking (in conjunction with extension EA1)

Control characteristicsPI characteristics with modulating output.

Setting the heating programsThe heating system frost protection (see frost protection function)applies to all heating programs.The following heating programs can be selected:■ Heating and DHW■ Only DHW■ Standby mode

Frost protection functionThe frost protection function is active in all heating programs.The burner is switched ON at a boiler water temperature of 5 ºC andwill be switched OFF again at a boiler water temperature of 20 ºC.The circulation pump will be switched ON simultaneously with theburner and switched OFF after a delay.The DHW cylinder will be heated to approx. 20 ºC.To protect the system against frost, the circulation pump may be star-ted at certain intervals (up to 24 times per day) for periods of approx.10 minutes.

Summer modeHeating program "w" The burner starts only when the DHW cylinder needs to be heated upagain.

Boiler water temperature sensorThe boiler water temperature sensor is connected to the control unitand built into the boiler.

SpecificationSensor type Viessmann NTC, 10 kΩ at

25 °CPermissible ambient temperature – during operation 0 to +130 °C– during storage and transport -20 to +70 °C

Cylinder temperature sensorThe standard delivery includes the DHW cylinder connection set.

SpecificationLead length 3.75 m, fully wiredIP rating IP 32Sensor type Viessmann NTC, 10 kΩ at

25 °CPermissible ambient temperature – during operation 0 to +90 °C– during storage and transport –20 to +70 °C

Specification Vitotronic 100, type HC1B

Rated voltage 230 V~Rated frequency 50 HzRated current 6 ASafety category IFunction Type 1 B to EN 60730-1Permissible ambi-ent temperature

– during operation 0 to +40 °CInstallation in living spaces or boiler rooms(standard ambient conditions)

– during storageand transport –20 to +65 °C

Electronic tempera-ture controller set-ting (heating mode) 82 °C (cannot be changed)Setting range forthe DHW tempera-ture

10 to 68 °C

Control units (cont.)


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5.2 Vitotronic 200, type HO1B, for weather-compensated operationStructure and functions

Modular structureThe control unit is integrated into the boiler.The control unit comprises a standard unit, electronics modules and aprogramming unit.

Standard unit:■ ON/OFF switch■ Optolink laptop interface■ Operating and fault display■ Reset button■ Fuses

48 °CBoiler temperature

HC1

14°C 21°C

Programming unit:■ Easy operation through:

– Plain text display with graphic ability– Large font and black/white depiction for good contrast– Context-sensitive help– Removable programming unit; can be mounted as option on the

wall with separate accessory■ With digital time switch■ Control keys for:

– Navigation– Confirmation– Help and additional information– Menu

■ Setting the:– Room temperature– Reduced room temperature– DHW temperature– Heating program– Time programs for central heating, DHW heating and DHW circu-

lation– Economy mode– Party mode– Holiday program– Heating curves– Codes– Actuator tests– Test mode

■ Displaying:– Boiler water temperature– Set DHW temperature– Operating details– Diagnostic details– Fault messages

Functions■ Weather-compensated control of the boiler water and/or flow tem-

perature■ Control of one heating circuit without mixer and two heating circuits

with mixer■ Electronic maximum and minimum temperature limit

■ Demand-dependent heating circuit pump and burner off control■ Adjustment of a variable heating limit■ Anti-seizing pump protection■ Heating system frost protection■ Integral diagnostic system■ Maintenance display■ Cylinder thermostat with priority■ Control of solar DHW heating and central heating backup in con-

junction with the solar control module, type SM1■ Display of the solar energy yield■ Auxiliary function for DHW heating (short-term heating to a higher

temperature)■ Screed drying program■ External starting and blocking (in conjunction with extension EA1)

The requirements of DIN EN 12831 for calculating the heating load aremet. To reduce the heat-up load, the reduced room temperature willbe raised in case of low outside temperatures. The flow temperaturewill be raised for a limited time to reduce the heat-up time after a set-back phase.According to the Energy Saving Ordinance [Germany], the tempera-ture in each room must be individually controlled, e.g. through ther-mostatic radiator valves.

Control characteristicsPI characteristics with modulating output.

Time switchDigital time switch (integrated into the programming unit)■ Individual day and seven-day program■ Automatic summer/wintertime changeover■ Automatic function for DHW heating and DHW circulation pump■ Time, day and standard switching times for central heating, DHW

heating and the DHW circulation pump are factory-set■ Switching times are individually programmable, i.e. up to four switch-

ing periods per dayShortest switching interval: 10 minutesPower reserve: 14 days

Setting the operating programsThe heating system frost protection (see frost protection function)applies to all heating programs.The following heating programs can be selected:■ Heating and DHW■ Only DHW■ Standby modeExternal heating program changeover in conjunction with EA1 exten-sion.

Frost protection function■ The frost protection function will be started when the outside tem-

perature drops below approx. +1 °C.With frost protection, the heating circuit pump is switched ON andthe boiler water is maintained at a lower temperature of approx.20 °C.The DHW cylinder will be heated to approx. 20°C.

■ The frost protection function will be stopped when the outside tem-perature rises above approx. +3 °C.

Summer modeHeating program "w"The burner starts only when the DHW cylinder needs to be heated upagain.



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Adjusting the heating curves (slope and level)The Vitotronic 200 controls the boiler water temperature (= flow tem-perature of the heating circuit without mixer) and the flow temperatureof the heating circuits with mixer (in conjunction with the extension kitfor one heating circuit with mixer) in weather-compensated mode. Theboiler water temperature is automatically boosted by between 0 and40 K higher than the currently required set flow temperature (deliveredcondition 8 K).The flow temperature required to reach a specific room temperaturedepends on the heating system and the thermal insulation of the build-ing to be heated.Adjusting the heating curves matches the boiler water temperature andthe flow temperature to these operating conditions.Heating curves:The upper boiler water temperature is limited by the temperature limiterand the temperature set at the electronic maximum thermostat.The flow temperature cannot exceed the boiler water temperature.

3.2

3.4

Boile

r wat

er o

rflo

w te

mpe

ratu

re in

°C

Outside temperature in °C

Heating curve slope

3.0

2.8

2.2

2.4

2.0

1.6

1.41.21.00.80.60.40.2

9080706050403020

-20-15-10-505101520

1.8

2.6

-30-25

Heating systems with low loss headerWhen using a hydraulic separation (low loss header), connect a tem-perature sensor for use in the low loss header.

Boiler water temperature sensorThe boiler water temperature sensor is connected to the control unitand built into the boiler.

SpecificationSensor type Viessmann NTC, 10 kΩ at

25 °CPermissible ambient temperature – during operation 0 to +130 °C– during storage and transport -20 to +70 °C

Cylinder temperature sensorThe standard delivery includes the DHW cylinder connection set.

SpecificationLead length 3.75 m, fully wiredIP rating IP 32Sensor type Viessmann NTC, 10 kΩ at


Outside temperature sensorInstallation site:■ North or north-western wall of the building■ 2 to 2.5 m above the ground, for multi storey buildings in the upper

half of the second floorConnection:■ 2-core lead, length max. 35 m with a cross-section of 1.5 mm2 (cop-

per).■ Never route this lead immediately next to 230/400 V cables

41 66

80

SpecificationIP rating IP 43 to EN 60529

ensure through appropriatedesign/installation

Sensor type Viessmann NTC 10kΩ at25 °C

Permissible ambient temperature dur-ing operation, storage and transport −40 to +70 °C

Specification Vitotronic 200, type HO1B

Rated voltage 230 V~Rated frequency 50 HzRated current 6 ASafety category IPermissible ambienttemperature

– during operation 0 to +40 °CInstallation in living spaces or boiler rooms(standard ambient conditions)

– during storage andtransport –20 to +65 °C

Electronic temperaturecontroller setting (heat-ing mode) 82 °C (cannot be changed)Setting range for theDHW temperature

10 to 68 °C

Heating curve settingrange

Slope 0.2 to 3.5Level –13 to 40 K



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5.3 Vitotronic 300-K, type MW2B for multi boiler systems

Cascade control unit for the Vitodens 200-W with Vitotronic 100Weather-compensated, digital cascade and heating circuit controlunit■ For multi boiler systems with Vitodens 200-W■ With boiler sequence strategy■ For up to two heating circuits with mixers (extension for heating cir-

cuits 2 and 3 required as accessory).Up to a further 32 Vitotronic 200-H heating circuit control units canbe connected via the LON BUS (LON module required; accessory)

■ For modulating operation in conjunction with the Vitotronic 100, typeHC1B

■ With cylinder temperature controller or control unit of a primary storesystem with mixer assembly

■ Capable of communicating via LON BUS (LON communication mod-ule and terminators available as accessories)

■ With integral diagnostic system

NoteTo improve the resilience against interference/faults, the componentsof a control unit should be connected to the same phase.

Structure and function

Modular structureThe control unit comprises a standard unit, electronics modules and aprogramming unit.Standard unit:■ ON/OFF switch■ Emissions test switch■ Optolink laptop interface■ Operation and fault displays■ Plug connection chamber

– Connection of external equipment via a system plug– Plug the connectors directly into the front of the open control unit– Connection of three-phase consumers via additional contactors

Programming unit:■ Easy operation through:

– Plain text display with graphic ability– Large font and black/white depiction for good contrast– Context-sensitive help

■ With digital time switch■ Control keys for:

– Navigation– Confirmation– Help and additional information– Extended menu

■ Setting the:– Room temperature– Reduced room temperature– DHW temperature– Heating program– Time programs for central heating, DHW heating and DHW circu-

lation– Economy mode– Party mode– Holiday program– Heating curves– Codes– Actuator tests– Test mode

■ Displaying:– Flow temperature– DHW temperature– Information– Operating details– Diagnostic details– Fault messages

Functions■ Weather-compensated regulation of the system/boiler water tem-

perature in a multi boiler system with Vitodens 200-W withVitotronic 100, type HC1B (modulating) and the flow temperature ofthe heating circuits with mixers

■ Control of boilers (with a Vitotronic 100, type HC1B) in accordancewith a freely selectable boiler sequence strategy

■ Electronic maximum temperature limiter■ Demand-dependent heating circuit pump shutdown■ Adjustment of a variable heating limit■ Pump anti-seizing protection■ Central fault message■ Integral diagnostic system■ Adaptive cylinder temperature controller with priority (heating circuit

pump OFF, mixer closed)■ Auxiliary function for DHW heating (short term heating to a higher

temperature)■ Control of a primary store system with a regulated 3-way mixing

valve■ Screed drying, for underfloor heating systems

The requirements of DIN EN 12831 for calculating the heating load aremet. To reduce the heat-up load, the reduced room temperature willbe raised in case of low outside temperatures. The flow temperaturewill be raised for a limited time to reduce the heat-up time after a set-back phase.According to the Energy Saving Ordinance [Germany], the tempera-ture in each room must be individually controlled, e.g. through ther-mostatic radiator valves.



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DHW heating in a multi boiler system

A

M M

A Vitotronic 300-K

Control characteristics■ PI characteristics with three-point output■ Setting range for heating curves:

– Slope: 0.2 to 3.5– Level: –13 to 40 K– Max. limit: 1 to 127 °C– Min. limit: 1 to 127 °C– Differential temperature for a heating circuit with mixer: 0 to 40 K

■ Set DHW temperature range:10 to 60 °C, adjustable between 10 and 95 °C (available temperaturelimited by the max. boiler flow temperature).

Time switchDigital time switch (integrated into the programming unit)■ Single and 7-day program, annual calendar■ Automatic summer/wintertime changeover■ Automatic function for DHW heating and DHW circulation pump■ Time, day and standard switching times for central heating, DHW

heating and the DHW circulation pump are factory-set■ Switching times are individually programmable, i.e. up to four switch-

ing periods per dayShortest switching interval: 10 minPower reserve: 14 days

Setting heating programsThe heating system frost protection (see frost protection function)applies to all heating programs.You can select the following heating programs with the programkeys:■ Heating and DHW■ Only DHW■ Standby modeOptional external changeover of heating program for all heating cir-cuits together or for selected heating circuits only.

Frost protection function■ The frost protection function will be started when the outside tem-

perature drops below approx. +1 °C.With frost protection, the heating circuit pump is switched ON andthe boiler water is maintained at a lower temperature of approx.20 °C.The DHW cylinder will be heated to approx. 20°C.

■ The frost protection function will be stopped when the outside tem-perature rises above approx. +3 °C.

Summer mode("DHW only")One or more burners start when the DHW cylinder needs to be heatedup (controlled by the cylinder temperature controller).

Heating curve setting (slope and level)Subject to heating system:■ The Vitotronic controls the flow temperature of up to 2 heating cir-

cuits with mixers in weather-compensated mode■ The Vitotronic automatically regulates the system/flow temperature

to 0 to 40 K (delivered condition 8 K) higher than the currently highestset flow temperature

The flow temperature required to reach a specific room temperaturedepends on the heating system and the thermal insulation of the build-ing to be heated.Adjusting the heating curves matches the system flow temperatureand the heating circuit flow temperature to these conditions.

3.2

3.4

Boile

r wat

er o

rflo

w te

mpe

ratu

re in

°C

Outside temperature in °C

Heating curve slope

3.0

2.8

2.2

2.4

2.0

1.6

1.41.21.00.80.60.40.2

9080706050403020

-20-15-10-505101520

1.8

2.6

-30-25

The upper flow temperature is limited by temperature controller "R"and the electronically set maximum temperature of the Vitotronic 100boiler control units, type HC1B.

Outside temperature sensorInstallation site:■ North or north-western wall of the building■ 2 to 2.5 m above the ground, for multi storey buildings in the upper

half of the second floorConnection:■ 2-core lead, length max. 35 m with a cross-section of 1.5 mm2 (cop-

per).■ Never route this lead immediately next to 230/400 V cables



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5

41 66

80

SpecificationIP rating IP 43 to EN 60529


Sensor type Viessmann NTC 10kΩ at25 °C

Permissible ambient temperature dur-ing operation, storage and transport −40 to +70 °C

Immersion temperature sensorTo capture the common flow temperature of the multi boiler system.

Inserted into the sensor well of the low loss header or secured with atie.

SpecificationLead length 5.8 m, fully wiredIP rating IP 32 to EN 60529Sensor type Viessmann NTC, 10 kΩ at


Cylinder temperature sensor

SpecificationLead length 5.8 m, fully wiredIP rating IP 32 to EN 60529Sensor type Viessmann NTC, 10 kΩ at


Specification, Vitotronic 300-K

Rated voltage: 230 V ~Rated frequency: 50 HzRated current: 6 APower consumption: 10 WSafety category: IIP rating: IP 20 D to EN 60529,

ensure through design/installation

Function: Type 1B to EN 60730-1Permissible ambient temperature – during operation: 0 to +40 °C for use in the

living space or boiler room(standard ambient condi-tions)

– during storage and transport: –20 to +65 °CRated relay output breaking capacity: – Heating circuit pumps or heat

exchanger set sÖ: 4(2) A 230 V~– Circulation pump for cylinder heatingsA:

4(2) A 230 V~

– DHW circulation pump sK: 4(2) A 230 V~– Distribution pump sL: 4(2) A 230 V~– Central fault message gÖ: 4(2) A 230 V~– Motor, 3-way mixing valve, primary

store systemorMixer motor gS: 0.2(0.1) A 230 V~

– Overall max. 6 A 230 V~

Dimensions

297

584

108

172

B

A

A

B

A Vitotronic 300-KB Mounting panel

Delivered condition Vitotronic 300-K

■ Programming unit with backlit plain text prompts■ Cascade communication module (corresponding to the number of

Vitodens)■ Outside temperature sensor■ Flow temperature sensor■ Cylinder temperature sensor■ Mounting panel

The control unit is fitted to the wall with a mounting panel.To control the heating circuits with mixers, the extension for heatingcircuits 2 and 3 is required (accessory).An extension kit (accessories) is required for each heating circuit withmixer.The LON communication module and BUS terminators are availableas accessories to enable communication.



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Heating system with DHW cylinderOrder the circulation pump with check valve or the Vitotrans 222 pri-mary store system separately.

5.4 Vitotronic accessories

Assignment to control unit types

Vitotronic 100 200 300-KType HC1B HO1B MW2BAccessoriesVitotrol 100, type UTA x Vitotrol 100, type UTDB x External extension H4 x Vitotrol 100, type UTDB-RF x Vitotrol 200A x xVitotrol 300A x xRoom temperature sensor for Vitotrol 300A x xMounting base for programming unit x xRadio clock receiver x xImmersion temperature sensor x Vitocom 100 x xExtension for heating circuits with mixers 2 and 3 xExtension kit for one heating circuit with mixer xExtension kit for one heating circuit with mixer with integral mixermotor

x

Extension kit for one heating circuit with mixer with separate mixermotor

x

Mixer motor x xSolar control module, type SM1 x x xImmersion temperature sensor x x xImmersion thermostat x xContact thermostat x xLON communication module x xLON connecting cable x xLON coupling x xLON plug-in connector x xLON socket x xTerminator x xKM BUS distributor x x xInternal extension H1 x x Internal extension H2 x x Extension AM1 x x Extension EA1 x x x

Vitotrol 100, type UTA

Part no. 7170 149

Room thermostat■ With switching output (two-point output)■ With analog time switch■ With adjustable individual day program■ Standard switching times are factory-set (individually programma-

ble)■ Shortest switching interval 15 minutes

Install the Vitotrol 100 in the main living room on an internal wall oppo-site radiators, but not inside shelf units, recesses, immediately by adoor or a heat source (e.g. direct sunlight, fireplace, TV set, etc.).Control unit connection:3-core cable with a cross-section of 1.5 mm2 (without green/yellow) for230 V~.

150

34

90

SpecificationRated voltage 230 V/50 HzRated breaking capacity of the con-tact 6(1) A 250 V~Protection IP 20 to EN 60529

safeguard through appropriatedesign and installation



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Permissible ambient temperature – during operation 0 to +40 °C– during storage and transport -20 to +60 °CSet value range for standard andreduced mode 10 to 30 °CSet room temperature in standbymode 6 °C

Vitotrol 100, type UTDB

Part no. Z007 691

Room temperature controller■ With switching output (two-point output)■ With digital time switch■ With individual and seven-day programs■ Programming unit with user prompts:

– 3 preselected time programs, individually adjustable– Constant manual mode with adjustable set room temperature– Frost protection mode– Holiday program

■ With selector keys for party and economy mode

Installation in the main living room on an internal wall opposite radia-tors. Never install inside shelving units, in recesses, or immediately bya door or heat source (e.g. direct sunlight, fireplace, TV set, etc.).Operation without power supply (two 1.5 V round alkaline batteries,type LR6/AA, which run for approx.1.5 years).Control unit connection:2-core lead with a cross-section of 0.75 mm2 for 230 V~.

29

130

80

SpecificationRated voltage 3 V–

Battery LR6/AARated breaking capacity of the zerovolt contact

– max. 6(1) A, 230 V~– min. 1 mA, 5 V–IP rating IP 20 to EN 60529;


Function RS Type 1B to EN 60730-1Permissible ambient temperature – during operation 0 to +40 °C– during storage and transport –25 to +65 °CSetting range – Comfort temperature 10 to 40 °C– Setback temperature 10 to 40 °C– Frost protection temperature 5 °CPower reserve during batterychange 3 min

External extension H4

Part no. 7197 227Connection extension for connecting the Vitotrol 100, type UTDB or24 V clock thermostats via a LV cable.With cable (0.5 m long) and plug for the connection to theVitotronic 100.

72 130

45

SpecificationRated voltage 230 V~Output voltage 24 V~Rated frequency 50 HzPower consumption 2.5 WLoad 24 V~ (max.) 10 WProtection class IIP rating IP 41Permissible ambient temperature – during operation 0 to +40 °C

Installation in living spaces orboiler rooms (standard ambi-ent conditions)

– during storage and transport -20 to +65 °C



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Vitotrol 100, type UTDB-RF

Part no. Z007 692

Room temperature controller with integral wireless transmitter and onereceiver■ With digital time switch■ With individual and seven-day programs■ Programming unit with user prompts:

– 3 preselected time programs, individually adjustable– Constant manual mode with adjustable set room temperature– Frost protection mode– Holiday program

■ With selector keys for party and economy mode

Installation in the main living room on an internal wall opposite radia-tors. Never install inside shelving units, in recesses, or immediately bya door or heat source (e.g. direct sunlight, fireplace, TV set, etc.).Room temperature controller operation without power supply (two 1.5V round alkaline batteries, type LR6/AA, which run for approx.1.5 years).Receiver with relay state indication.

Connection of the receiver to the control unit (subject to control unittype):■ 4-core cable with a cross-section of 1.5 mm2 for 230 V~

or■ 3-core cable without green/yellow core for 230 V~

or■ 2-core lead with a cross section of 0.75 mm2 for LV for the connection

to the control unit, plus an additional 2-core cable for the 230 V~power supply

130

29

130

30

8080

Specification, room temperature controllerRated voltage 3 V–Transmission frequency 868 MHzTransmission < 10 mWRange approx. 25 to 30 m inside

buildings, subject to construc-tion

IP rating IP 20 to EN 60529;ensure through appropriatedesign/installation

Function RS Type 1B to EN 60730-1Permissible ambient temperature – during operation 0 to +40 °C– during storage and transport –25 to +65 °CSetting range – Comfort temperature 10 to 40 °C– Setback temperature 10 to 40 °C– Frost protection temperature 5 °CPower reserve during batterychange 3 min

Specification, receiverOperating voltage 230 V~ ± 10 % 50 HzRated breaking capacity of the zerovolt contact

– max. 6(1) A, 230 V~– min. 1 mA, 5 V–IP rating IP 20 to EN 60529;


Protection class II to EN 60730-1 subject to cor-rect installation

Permissible ambient temperature – during operation 0 to +40 °C– during storage and transport –25 to +65 °C

Notes regarding room temperature hook-up (RS function) for remote control unitsNever activate the RS function for underfloor heating circuits (iner-tia).

In heating systems with a heating circuit without mixer and heatingcircuits with mixer, the RS function must only affect the heating circuitwith mixer.

Information regarding the Vitotrol 200A and 300AOne Vitotrol 200A or one Vitotrol 300A can be used for every heatingcircuit in a heating system.The Vitotrol 200A can regulate one heating circuit; the Vitotrol 300Aup to three heating circuits.

Up to two remote controls may be connected to the control unit.

Vitotrol 200A

Part no. Z008 341KM BUS subscriber

Functions:■ Display of room temperature, outside temperature and the operating

condition.■ Setting the standard room temperature (day temperature) and oper-

ating program via the standard display.



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NoteThe reduced room temperature (night temperature) is set at the con-trol unit.

■ Party and economy mode can be enabled via keys.■ Only for heating circuit with mixer:

fitted room temperature sensor for room temperature hook-up

NoteFor room temperature hook-up, the Vitotrol 200A must be installedin the living space (lead room).

Installation site:■ Weather-compensated mode:

Installation anywhere in the building.■ Room temperature hook-up:

Installation in the main living room on an internal wall opposite radi-ators. Never install inside shelving units, in recesses, or immediatelyby a door or heat source (e.g. direct sunlight, fireplace, TV set, etc.).The fitted room temperature sensor captures the actual room tem-perature and effects any necessary correction of the flow tempera-ture.

Connection:■ 2-core lead, length max. 50 m (even if connecting several remote

control units)■ Never route this lead immediately next to 230/400 V cables■ LV plug as standard delivery

148

20,5

97

SpecificationPower supply via KM BUSPower consumption 0.2 WSafety category IIIIP rating IP 30 to EN 60529

ensure through appropri-ate design/installation

Permissible ambient temperature– during operation 0 to +40 °C– during storage and transport −20 to +65 °CSet room temperature range 3 to 37 °C

Vitotrol 300A

Part no. Z008 342KM BUS subscriber

Functions:■ Displaying:

– Room temperature– Outside temperature– Heating program– Operating condition– Solar yield as graphic display

■ Settings:– Set room temperatures for standard mode (day temperature) and

reduced mode (night temperature) via the standard display– Heating program, switching times for heating circuits, DHW heat-

ing and DHW circulation pump plus further settings via plain textmenu on the display

■ Party and economy mode can be enabled via the menu■ Only for heating circuit with mixer:

fitted room temperature sensor for room temperature hook-up

NoteFor room temperature hook-up, the Vitotrol 300A must be installedin the living space (lead room).

Installation site:■ Weather-compensated mode:

Installation anywhere in the building.■ Room temperature hook-up:

Installation in the main living room on an internal wall opposite radi-ators. Never install inside shelving units, in recesses, or immediatelyby a door or heat source (e.g. direct sunlight, fireplace, TV set, etc.).The fitted room temperature sensor captures the actual room tem-perature and effects any necessary correction of the flow tempera-ture.

Connection:■ 2-core lead, length max. 50 m (even if connecting several remote

control units)■ Never route this lead immediately next to 230/400 V cables■ LV plug as standard delivery

20,5

155 97

SpecificationPower supply via KM BUSPower consumption 0.5 WSafety category IIIIP rating IP 30 to EN 60529


Permissible ambient temperature– during operation 0 to +40 °C– during storage and transport −20 to +65 °CSet room temperature range 3 to 37 °C



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Room temperature sensor

Part no. 7438 537Separate room temperature sensor as supplement to the Vitotrol300A; to be used if the Vitotrol 300A cannot be installed inside the mainliving room or in a suitable position where the unit could capture andadjust the temperature.Installation in the main living room on an internal wall opposite radia-tors. Never install inside shelving units, in recesses, or immediately bya door or heat source (e.g. direct sunlight, fireplace, TV set, etc.).Connect the room temperature sensor to the Vitotrol 300A.Connection:■ 2-core lead with a cross-section of 1.5 mm2 (copper)■ Lead length from the remote control up to 30 m■ Never route this lead immediately next to 230/400 V cables

20

80□

SpecificationSafety category IIIIP rating IP 30 to EN 60529


Sensor type Viessmann NTC, 10 kΩ at25 °C

Permissible ambient temperature– during operation 0 to +40 °C– during storage and transport −20 to +65 °C

Mounting base for programming unit

Part no. 7299 408To be able to freely position the programming unit of the control unitanywhere outside the appliance.

To be fitted directly to the wall or a surface box.Distance from the boiler: Observe the lead length incl. plugs of 5 m.

20

160

110

Comprising:■ Wall mounting base with fixing materials■ 5 m long cable with plugs■ Cover for the control unit aperture on the boiler

Radio clock receiver

Part no. 7450 563For receiving the DCF 77 time signal (location: Mainflingen near Frank-furt/Main).Radio controlled setting of time and date.Install on an outside wall, facing the transmitter. The reception may bereduced by metallic elements in the building structure, e.g. steel rein-forced concrete, neighbouring buildings and sources of electro-mag-netic interference, e.g. HV and public transport lines.Connection:■ 2-core lead, length up to 35 m with a cross-section of 1.5 mm2(cop-

per)■ Never route this lead immediately next to 230/400 V cables.

41 66

80



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Vitocom 100, type GSM■ Without SIM card

Part no. Z004594■ With contract SIM card for the operation of the Vitocom 100 via

mobile phonePart no. Z004615

NoteFor information regarding terms of contract, see "www.viessmann.de/vitocom-100".

Functions:■ Remote switching via GSM mobile phone networks■ Remote scanning via GSM mobile phone networks■ Remote monitoring via SMS to 1 or 2 mobile phones■ Remote monitoring of additional systems via digital input (230 V)

Configuration:Mobile phones via SMS

Standard delivery:■ Vitocom 100 (subject to order with or without SIM card)■ Power cable with standard Euro plug (2.0 m long)■ GSM aerial (3.0 m long), magnetic foot and adhesive pad■ KM BUS cable (3.0 m long)

On-site requirements:Good reception for GSM communication with the selected mobilephone operator.

Total length of all KM BUS subscriber cables up to 50 m.

72 130

50

SpecificationRated voltage 230 V ~Rated frequency 50 HzRated current 15 mAPower consumption 4 WSafety category IIIP rating IP 41 to EN 60529; ensure

through design/installationFunction Type 1B to EN 60 730-1Permissible ambient temperature – during operation 0 to +55 °C

Installation in living spaces orboiler rooms (standard ambi-ent conditions)

– during storage and transport –20 to +85 °COn-site connectionFault input DE 1 230 V ~

Mixer extension kit with integral mixer motor

Part no. 7301 063KM BUS subscriber

Components:■ Mixer PCB with mixer motor for Viessmann mixer DN 20 to 50 and

R ½ to 1¼■ Flow temperature sensor (contact temperature sensor)■ Plug for connecting the heating circuit pump■ Power cable (3.0 m long) with plug■ BUS cable (3.0 m long) with plug

The mixer motor is mounted directly onto the Viessmann mixer DN 20to 50 and R ½ to 1¼.

Mixer PCB with mixer motor

160

180 130

SpecificationRated voltage 230 V~Rated frequency 50 HzRated current 2 APower consumption 5.5 W

IP rating IP 32D to EN 60529ensure through appropriatedesign/installation

Safety category IPermissible ambient temperature – during operation 0 to +40 °C– during storage and transport –20 to +65 °CRated breaking capacity of the relayoutput for heating circuit pump sÖ 2(1) A 230 V~Torque 3 NmRuntime for 90 ° ∢ 120 s

Flow temperature sensor (contact temperature sensor)

42

66

60

Secured with a tie.

SpecificationLead length 2.0 m, fully wiredIP rating IP 32D to EN 60529






5

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Mixer extension kit for separate mixer motor

Part no. 7301 062KM BUS subscriberFor the connection of a separate mixer motor.Components:■ Mixer PCB for the connection of a separate mixer motor■ Flow temperature sensor (contact temperature sensor)■ Plug for connecting the heating circuit pump and the mixer motor■ Power cable (3.0 m long) with plug■ BUS cable (3.0 m long) with plug

Mixer PCB

58180

140

SpecificationRated voltage 230 V~Rated frequency 50 HzRated current 2 APower consumption 1.5 WIP rating IP 20D to EN 60529


Safety category IPermissible ambient temperature – during operation 0 to +40 °C– during storage and transport –20 to +65 °CRated relay output breaking capacity Heating circuit pump Ös 2(1) A 230 V~Mixer motor 0.1 A 230 V~Required runtime of the mixer motorfor 90 ° ∢ approx. 120 s

Flow temperature sensor (contact temperature sensor)

42

66

60

Secured with a tie.

SpecificationLead length 5.8 m, fully wiredIP rating IP 32D to EN 60529




Extension kit for one heating circuit with mixer in conjunction with Divicon heating circuit distributor

Part no. 7424 958Components:■ Mixer PCB with mixer motor■ Flow temperature sensor (immersion sensor for installation in the

Divicon)■ Connection plug for heating circuit pump, power supply, flow tem-

perature sensor and KM BUS connection

Mixer PCB

160

180 130

SpecificationRated voltage 230 V~Rated frequency 50 HzRated current 2 APower consumption 5.5 WIP rating IP 32 D to EN 60 529,


Protection class IPermissible ambient temperature – during operation 0 to +40 °C– during storage and transport –20 to +65 °CRated relay output breaking capacity Heating circuit pump sÖ 2(1) A 230 V~Runtime for 90 ° ∢ approx. 120 s

Flow temperature sensor (immersion sensor)



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SpecificationLead length 0.9 m, fully wiredIP rating IP 32 to EN 60529; ensure

through appropriate designand installation


Permissible ambient temperature – during operation 0 to +120 °C– during storage and transport −20 to +70 °C

Vitotronic 300-K extension for heating circuits with mixers 2 and 3

Part no. 7164 403PCB for installation in the Vitotronic 300-K, type MW2B.For controlling two heating circuits with mixers.

■ With connections for mixer motors, flow temperature sensors (NTC10 kΩ) and heating circuit pumps.

■ Plug for mixer motor and heating circuit pump for each heating cir-cuit.

Extension kit for one heating circuit with mixer for the Vitotronic 300-K

Part no. 7441 998Components:■ Mixer motor■ Flow temperature sensor (contact temperature sensor), lead length

5.8 m, fully wired■ Plug for connecting the heating circuit pump■ Mixer motor terminals■ Connecting cable (4.0 m long)The mixer motor is mounted directly onto the mixer DN 20 to 50 orR ½ to 1¼.

Mixer motor

180

130

90

Specification, extension kitRated voltage 230 V~Rated frequency 50 HzPower consumption 2.5 WSafety category IIP rating IP 32D to EN 60529;

ensure through design/installation

Permissible ambient temperature – during operation 0 to +40 °C– during storage and transport –20 to +65 °CTorque 3 NmRuntime for 90 ° ∢ 120 s

Flow temperature sensor (contact sensor)

42

66

60

Secured with a tie.

SpecificationIP rating IP 32D to EN 60529

ensure through design/instal-lation



Mixer motorsSee datasheet "Control unit accessories".

Immersion thermostat

Part no. 7151 728May be used as a maximum temperature limiter for underfloor heatingsystems.The temperature limiter is installed into the heating flow and switchesthe heating circuit pump OFF if the flow temperature is too high.



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72 130

9520

0

SpecificationLead length 4.2 m, fully wiredSetting range 30 to 80 °CSwitching differential max. 11 KBreaking capacity 6(1.5) A 250 V~Setting scale inside the casingStainless steel sensor well R ½" x 200 mmDIN reg. no. DIN TR 116807

orDIN TR 96808

Contact thermostat

Part no. 7151 729May be used as a maximum temperature limiter for underfloor heatingsystems (only in conjunction with metallic pipes).The temperature limiter is installed into the heating flow and switchesthe heating circuit pump OFF if the flow temperature is too high.

72 130

95

SpecificationLead length 4.2 m, fully wiredSetting range 30 to 80 °CSwitching differential max. 14 KBreaking capacity 6(1.5) A 250V~Setting scale inside the casingDIN reg. no. DIN TR 116807

orDIN TR 96808

Immersion temperature sensor

Part no. 7179 488To capture the low loss header temperature.

SpecificationLead length 3.75 m, fully wiredIP rating IP 32Sensor type NTC 10 kΩ at 25 °CPermissible ambient temperature – during operation 0 to +90 °C– during storage and transport –20 to +70 °C

Solar control module, type SM1

Part no. 7429 073

Specification

Construction

The solar control module contains:■ PCB■ Connection terminals

– 4 sensors– Solar circuit pump– KM BUS– Power supply (on-site ON/OFF switch)

■ PWM output for controlling the solar circuit pump■ 1 relay for switching a pump or a valve

Collector temperature sensorFor connection inside the appliance.On-site extension of the connecting lead:■ 2-core lead, length up to 60 m with a cross-section of 1.5 mm2 (cop-

per)■ Never route this lead immediately next to 230/400 V cables

Lead length 2.5 mIP rating IP 32 to EN 60529; ensure

through design/installationSensor type Viessmann NTC 20 kΩ at

25 °CPermissible ambient temperature– during operation −20 to +200 °C– during storage and transport −20 to +70 °C



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Cylinder temperature sensorFor connection inside the appliance.On-site extension of the power cable:■ 2-core lead, length up to 60 m with a cross-section of 1.5 mm2 (cop-

per)■ Never route this lead immediately next to 230/400 V cables

Lead length 3.75 mIP rating IP 32 to EN 60529; ensure

through design/installationSensor type Viessmann NTC 10 kΩ at

25 °CPermissible ambient temperature– during operation 0 to +90 °C– during storage and transport −20 to +70 °C

For systems with Viessmann DHW cylinders, the cylinder temperaturesensor is installed in the threaded elbow (standard delivery or acces-sory for the respective DHW cylinder) in the heating water return.

Functions■ Switching the solar circuit pump■ Electronic limiter for the temperature in the DHW cylinder (safety

shutdown at 90 °C)■ Collector safety shutdown■ Central heating backup is controlled in conjunction with a multi mode

heating water buffer cylinder■ The heating of two consumers is controlled via a collector array■ Switching an additional pump or valve via relay■ Second temperature differential control or thermostat function■ Solar circuit pump speed control via wave pack control or solar circuit

pump with PWM input (Grundfos)■ Suppression of DHW cylinder reheating by the boiler (auxiliary func-

tion for DHW heating is possible)■ Suppression of reheating for central heating by the boiler with central

heating backup■ Heating up of the solar-heated preheat stage (for DHW cylinders with

a total capacity of ≥ 400 l)■ Output statement and diagnostic system

The immersion temperature sensor, part no. 7438 702 is required ofthe following functions should be realised:■ For DHW circulation diversion in systems with 2 DHW cylinders

or■ for return changeover between the boiler and the heating water buf-

fer cylinderor

■ for heating additional consumers.

Specification

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Rated voltage 230 V~Rated frequency 50 HzRated current 2 APower consumption 1.5 WSafety category IIP rating IP 20 to EN 60529; ensure

through design/installationFunction Type 1B to EN 60730-1Permissible ambient temperature – during operation 0 to +40 °C use in the living

space or boiler room (standardambient conditions)

– during storage and transport −20 to +65 °CRated relay output breakingcapacity

– Semi-conductor relay 1 1 (1) A, 230 V~– Relay 2 1 (1) A, 230 V~– Total max. 2 A

Immersion temperature sensor

Part no. 7438 702To capture a temperature in a sensor well.

SpecificationLead length 5.8 m, fully wiredIP rating IP 32 to EN 60529; ensure

through design/installationSensor type Viessmann NTC 10 kΩ, at

25 °CPermissible ambient temperature– during operation 0 to +90°C– during storage and transport −20 to +70 °C

LON communication module

PCB for data exchange with the Vitotronic 200-H, Vitocom 200 and forconnecting to higher level building management systems.

■ For installation in the Vitotronic 200Part no. 7179 113

■ For installation in the Vitotronic 300-KPart no. 7172 174



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LON connecting cable for data exchange between control unitsVitotronic 300-K for the Vitotronic 200-H

Part no. 7143 495

Cable length 7 m, fully wired.

Extension of the connecting cable■ Installation spacing 7 to 14 m:

– 2 connecting cables (7.0 m long)Part no. 7143 495

– 1 LON coupling RJ45Part no. 7143 496

■ Installation distance 14 to 900 m with plug-in connectors:– 2 LON plug-in connectors

Part no. 7199 251– 2-core cable:

CAT5, screenedorSolid conductor AWG 26-22 / 0.13 mm2 - 0.32 mm2,Conductor AWG 26-22 / 0.14 mm2 - 0.36 mm2

7 4.5 mm - 8 mmon-site

■ Installation distance 14 to 900 m with junction boxes:– 2 connecting cables (7.0 m long)

Part no. 7143 495– 2-core cable:

CAT5, screenedorSolid conductor AWG 26-22 / 0.13 mm2 - 0.32 mm2,Conductor AWG 26-22 / 0.14 mm2 - 0.36 mm2

7 4.5 mm - 8 mmon-site

– 2 LON sockets RJ45, CAT6Part no. 7171 784

Terminator (2 pce)

Part no. 7143 497To terminate the LON BUS at the first and last control unit.

KM BUS distributor

Part no. 7415 028For the connection of 2 to 9 devices to the Vitotronic KM BUS.

217130

84

SpecificationLead length 3.0 m, fully wiredProtection IP 32 to EN 60529;

safeguard through appro-priate design and installa-tion

Permissible ambient temperature– during operation 0 to +40 °C– during storage and transport -20 to +65 °C



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Internal extension H1

Part no. 7179 057PCB for installation in the control unit.

Using the extension allows the following functions to be achieved:Function Rated breaking capacity of the relay output– Connection of an external safety solenoid valve (LPG) 1(0.5) A 250 V~and one of the following functions:– Connection of a heating circuit pump (stepped) for a directly connected heating circuit– Connection of a central fault message– Connection of a circulation pump for cylinder heating– Only with the Vitotronic 200, type HO1B:

Connection of a DHW circulation pump

2(1) A 250 V~

SpecificationRated voltage 230 V~Rated frequency 50 Hz

Internal extension H2

Part no. 7179 144PCB for installation in the control unit.

Using the extension allows the following functions to be achieved:Function Rated breaking capacity of the relay output– External extractor interlock 6(3) A 250 V~and one of the following functions:– Connection of a heating circuit pump (stepped) for a directly connected heating circuit– Connection of a central fault message– Connection of a circulation pump for cylinder heating– Only with the Vitotronic 200, type HO1B:

Connection of a DHW circulation pump

2(1) A 250 V~

SpecificationRated voltage 230 V~Rated frequency 50 Hz

Extension AM1

Part no. 7452 092Function extension inside the casing for wall mounting.

Using the extension allows up to two of the following functionsto be achieved:■ Switching the DHW circulation pump (only with the Vitotronic 200,

type HO1B)■ Switching the heating circuit pump for a directly connected heating

circuit■ Switching the circulation pump for cylinder heating (not for boilers

with integral DHW cylinder)

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140

SpecificationRated voltage 230 V~Rated frequency 50 HzRated current 4 APower consumption 4 WRated relay output breaking capacity each 2(1) A 250 V~

total max. 4 A~Safety category IIP rating IP 20 D to EN 60529


Permissible ambient temperature – during operation 0 to +40 °C

Installation in living spaces orboiler rooms(standard ambient conditions)

– during storage and transport –20 to +65 °C



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Extension EA1

Part no. 7452 091Function extension inside the casing for wall mounting.

Using the inputs and outputs allows up to 5 functions to be ach-ieved:

1 switching output (floating changeover contact)■ Central fault message issue (only with the Vitotronic 100, type HC1B

and Vitotronic 200, type HO1B)■ Switching a feed pump to a substation■ Switching the DHW circulation pump (only with the Vitotronic 200,

type HO1B)

1 analogue input (0 to 10 V)■ Set boiler water temperature default

3 digital inputs■ External heating program changeover for 1 to 3 heating circuits (only

with the Vitotronic 200, type HO1B, and the Vitotronic 300-K,type MW2B)

■ External blocking■ External blocking with central fault message■ Minimum boiler water temperature demand■ Fault messages■ Short term operation DHW circulation pump (only with the

Vitotronic 200, type HO1B, and Vitotronic 300-K, type MW2B)■ Signalling reduced operation for one heating circuit (only for the

Vitotronic 300-K, type MW2B)

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SpecificationRated voltage 230 V~Rated frequency 50 HzRated current 2 APower consumption 4 WRated breaking capacity of the relayoutput

2(1) A 250 V~

Safety category IIP rating IP 20 D to EN 60529


Permissible ambient temperature – during operation 0 to +40°C

Installation in living spaces orboiler rooms(standard ambient conditions)

– during storage and transport –20 to +65 °C

Appendix

6.1 Regulations / Directives

Regulations and DirectivesThe design and operational characteristics of the Vitodens gas con-densing boilers from Viessmann meet the requirements of EN 297.They are CE-designated.They may be installed in sealed unvented heating systems with per-missible flow temperatures (= safety temperatures) up to 100 ºC toEN 12828. The maximum achievable flow temperature is approx.15 K below the safety temperature.Observe all standards and guidelines applicable to the installation andoperation of this system in your country.Only qualified contractors must carry out the installation, the mains gasand flue gas connections, the commissioning, the electrical connectionas well as general maintenance and repair work.The installation of a condensing boiler may need to be notified to andapproved by your local gas supply utility.

In some regions, permits may be required for the flue system and con-densate drain into the public sewage system.In some countries, the relevant flue gas inspector and water authoritiesmust be informed prior to commencing the installation.We recommend that you carry out maintenance and cleaning proce-dures annually. As part of the maintenance procedure, check the cor-rect function of the entire system. Remedy any faults.Condensing boilers must only be operated with specially designed,tested and approved flue pipes.Only recognised contractors may convert this boiler for use in countriesother than those stated on the type plate. That contractor must alsoarrange approval in accordance with the statutes of that country.



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EnEV Energy Saving Ordinance1st BImSchV First regulation for the implementation of the German Immissions Act (regulation regarding small and

medium-sized combustion equipment)FeuVo Fire Regulations of the German Federal StatesDIN 1986 Materials for drainage systemDIN 1988 DHW pipe systems on propertiesDIN 4753 Water heaters and DHW systems for DHW and process waterDIN 18160 Domestic chimneysDIN 18380 Heating systems and central DHW heating systems (VOB)DIN 57116 Electrical equipment for combustion systemsEN 677 Gas condensing boilerEN 12828 Heating systems in buildings – design of hot water heating systemsEN 12831 Heating systems in buildings – process for calculating the standard heat loadEN 13384 Flue systems – thermal and flow calculationsATV-DVWK-A 251 Introduction of condensate from gas and oil combustion systems [into public sewers]DVGW G 260 Gas qualityDVGW G 600 Technical rules for gas installations (TRGI)DVGW G 688 Gas consumption equipment, condensing technologyDVGW/DVFG Technical rules for LPG (TRF)DVGW VP 113 Systems comprising combustion equipment and fluesVDI 2035 Guidelines for the prevention of losses through corrosion and scaling in hot water heating systemsVdTÜV 1466 Water quality datasheetVDE regulations and the special regulations of local power supply utilities.

Appendix (cont.)


658

22 4

32 G

B

AAccessories■ For control units............................................................................45Anti-corrosion agents.......................................................................36Antifreeze.........................................................................................36

BBalanced flue operation...................................................................25Boiler water temperature sensor................................................39, 41

CCascade control unit........................................................................42Combustion air supply......................................................................25Condensate......................................................................................34Condensate connection...................................................................34Constant temperature control unit■ Frost protection function...............................................................39■ Functions................................................................................38, 39■ Heating programs.........................................................................39■ Layout...........................................................................................38■ Programming unit..........................................................................39■ Standard unit.................................................................................38Contact thermostat...........................................................................53Control unit■ For constant temperature operation..............................................38■ For weather-compensated operation............................................40

DDistributor with low loss header.......................................................38

EElectrical connection........................................................................26EnEV..........................................................................................40, 42Expansion vessel.............................................................................37Extension■ Internal H1....................................................................................56■ Internal H2....................................................................................56Extension AM1.................................................................................56Extension EA1..................................................................................57

FFill water...........................................................................................36Frost protection function.......................................................39, 40, 43

GGas connection................................................................................27

HHeating curve adjustment................................................................41Hydraulic connection........................................................................36

IImmersion thermostat......................................................................52Initial heat-up....................................................................................36Installation room...............................................................................25Interlock circuit.................................................................................25Interlock switch.................................................................................26Internal extension H1.......................................................................56Internal extension H2.......................................................................56IP rating............................................................................................26

KKM BUS distributor...........................................................................55

LLeads/cables....................................................................................26Level.................................................................................................41LON communication module............................................................54Low loss header...............................................................................37Low loss headers.............................................................................37Low water indicator..........................................................................36

MMixer extension■ Integral mixer motor................................................................50, 51■ Separate mixer motor...................................................................51Mixer extension kit■ Integral mixer motor................................................................50, 51■ Separate mixer motor...................................................................51Mounting base for programming unit...............................................49

NNeutralisation...................................................................................34Neutralising system..........................................................................34

OOpen flue operation..........................................................................25Outside temperature sensor.......................................................41, 43

RRoom temperature controller.....................................................46, 47Room temperature sensor...............................................................49Room thermostat..................................................................45, 46, 47

SSafety equipment.............................................................................36Safety valve......................................................................................36Siting conditions...............................................................................25Slope................................................................................................41Solar control module■ Specification............................................................................53, 54Specification■ Solar control module...............................................................53, 54Standard unit....................................................................................40System design..................................................................................36

TTemperature sensor■ Boiler water temperature.........................................................39, 41■ Outside temperature...............................................................41, 43■ Room temperature........................................................................49Thermally activated safety shut-off valve.........................................27Thermostat■ Contact temperature.....................................................................53■ Immersion temperature.................................................................52Time switch................................................................................40, 43

VVitocom■ 100, type GSM..............................................................................50Vitotrol , 47, 48■ UTA...............................................................................................45■ UTDB............................................................................................46■ UTDB-RF......................................................................................47

WWater quality....................................................................................36Weather-compensated control■ Operating programs......................................................................40Weather-compensated control unit■ Frost protection function.........................................................40, 43■ Functions......................................................................................40■ Layout...........................................................................................40■ Programming unit..........................................................................40■ Standard unit.................................................................................40Wet area...........................................................................................26

Keyword index


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Viessmann LimitedHortonwood 30, TelfordShropshire, TF1 7YP, GBTelephone: +44 1952 675000Fax: +44 1952 675040E-mail: [email protected]

Viessmann Werke GmbH&Co KGD-35107 AllendorfTelephone: +49 6452 70-0Fax: +49 6452 70-2780www.viessmann.com

as a multi boiler system up to 840.0 kw 17.0 to 105.0 … · viesmann vitodens 200-w gas condensing...

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