VIESMANN - Viessmann

VIESMANN VITODENS 200-W 

Gas condensing boiler 

17.0 to 105.0 kW 

as a multi-boiler system up to 420.0 kW 

Technical guide 

VITODENS 200-W Type WB2B 

Wall mounted gas condensing boiler, 

with modulating MatriX cylinder burner 

for open or balanced flue operation 

5822 432 GB 6/2009

Index 

Index 

1. Vitodens 200-W 1.1 Product description ....................................................................................................... 4 

1.2 Specification ................................................................................................................. 6 

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

■ Vitodens 200-W, 80 and 105 kW .............................................................................. 11 

2. Installation accessories 2.1 Product description ....................................................................................................... 14 

■ Installation accessories for the Vitodens 200-W, 45 and 60 kW ............................... 14 

■ Installation accessories for the Vitodens 200-W, 80 and 105 kW ............................. 19 

■ Installation accessories for multi-boiler systems ....................................................... 20 

3. DHW cylinder 3.1 Product description ....................................................................................................... 21 

4. Design information 4.1 Positioning, installation ................................................................................................. 21 

■ Installation conditions for open flue operation (appliance type B) ............................. 21 

■ Installation conditions for balanced flue operation (appliance type C) ...................... 21 

■ Operation of the Vitodens in wet areas ..................................................................... 22 

■ Electrical connection ................................................................................................. 22 

■ Gas connection ......................................................................................................... 23 

■ Minimum clearances ................................................................................................. 23 

■ Pre-installation for installing the Vitodens 200-W directly onto a wall ....................... 24 

■ Pre-installation, multi-boiler system .......................................................................... 24 

4.2 Condensate connection ................................................................................................ 29 

■ Condensate drain and neutralisation ........................................................................ 29 

4.3 Hydraulic connection .................................................................................................... 31 

■ General ..................................................................................................................... 31 

■ Expansion vessels .................................................................................................... 31 

■ Low loss header ........................................................................................................ 31 

5. Control units 5.1 Vitotronic 100, type HC1, for constant temperature operation ...................................... 33 

■ Structure and functions ............................................................................................. 33 

■ Specification, Vitotronic 100 ...................................................................................... 33 

5.2 Vitotronic 200, type HO1, for weather-compensated operation .................................... 33 

■ Specification, Vitotronic 200 ...................................................................................... 35 

5.3 Vitotronic 300-K, type MW2 for multi-boiler systems .................................................... 35 

■ Cascade control unit for the Vitodens 200-W with a Vitotronic 100 .......................... 35 

■ Construction and function ......................................................................................... 35 

■ Specification, Vitotronic 300-K .................................................................................. 37 

■ Delivered condition Vitotronic 300-K ......................................................................... 38 

5.4 Accessories for the Vitotronic ....................................................................................... 38 

■ Allocation to control unit types .................................................................................. 38 

■ Vitotrol 100, type UTA ............................................................................................... 39 

■ Vitotrol 100, type UTD ............................................................................................... 39 

■ External extension H4 ............................................................................................... 40 

■ Vitotrol 100, type UTD-RF ......................................................................................... 40 

■ Notes regarding room temperature hook-up (RS function) for remote control units . 40 

■ Information regarding the Vitotrol 200 and 300 ......................................................... 41 

■ Vitotrol 200 ................................................................................................................ 41 

■ Vitotrol 300 ................................................................................................................ 41 

■ Room temperature sensor ........................................................................................ 42 

■ Radio clock receiver .................................................................................................. 42 

■ Function extension 0 to 10 V .................................................................................... 42 

■ Vitocom 100, type GSM ............................................................................................ 43 

■ Extension kit for one heating circuit with mixer with integral mixer motor ................. 43 

■ Extension kit for one heating circuit with mixer for separate mixer motor ................. 44 

■ Extension kit for one heating circuit with mixer for the Vitotronic 300-K ................... 44 

■ Immersion thermostat ............................................................................................... 45 

■ Contact thermostat .................................................................................................... 45 

■ Immersion temperature sensor ................................................................................. 46 

■ LON communication module ..................................................................................... 46 

■ LON connecting cable for data exchange between control units .............................. 46 

■ Extension of the connecting cable ............................................................................ 47 

■ Terminator (2 pce.) ................................................................................................... 47 

■ KM BUS distributor ................................................................................................... 47 

■ Internal extension H1 ................................................................................................ 47 

■ Internal extension H2 ................................................................................................ 47 



2 VIESMANN VITODENS 200-W 

5822 432 GB

5822 432 GB 

Index (cont.) 

6. Appendix 6.1 Regulations / Directives ................................................................................................ 49 

■ Regulations and Directives ....................................................................................... 49 

7. Keyword index .............................................................................................................................................. 50 

VITODENS 200-W VIESMANN 3

1 

Vitodens 200-W 

1.1 Product description 

Vitodens 200-W wall mounted condensing boilers up to 105 kW are 

especially suitable for installation in apartment buildings and commercial 

or public buildings. For these, the Vitodens 200-W offers an affordable, 

space-saving solution – either as a single unit up to 105 kW or 

as a cascade with up to four boilers and an output up to 420 kW. 

The Inox-Radial heat exchanger made from stainless steel offers high 

output in the tightest of spaces. This enables particularly efficient operation 

with standard efficiency up to 98 % (H s)/109 % (H i). 

The Vitotronic 300-K cascade control unit regulates up to four Vitodens 

200-W as a single heating centre. In this way, the boiler output is automatically 

matched to the heat demand. This means subject to the prevailing 

demand, either one boiler modulates or all four boilers operate 

concurrently. 

For the construction of cascade systems, we offer perfectly matching 

system design, e.g. control units with up to four appliances, fully insulated 

hydraulic cascades or flue gas headers. 

Recommended applications 

High 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, nurseries, 

garages and DHW heating systems 

■ Systems with several heating circuits for underfloor and/or static 

radiators in multi-occupancy dwellings, central heating plants for terraced 

houses, office buildings and administration premises - particularly 

suitable for attic heating centres 

■ Heating of public buildings, such as sports and multi-purpose halls, 

schools, kindergartens 

■ Suitable for installation in basement boiler rooms, on single floors or 

in the attic. 

A Inox-Radial heat exchanger made from stainless steel - for high 

operational reliability and a long service life. Large output in the 

smallest of spaces 

B Modulating MatriX cylinder burner for extremely clean combustion 

and quiet operation 

C Variable speed combustion fan for quiet and economical operation 

D Gas and water connections 

E Digital boiler control unit 

Benefits at a glance 

■ Wall mounted gas condensing boiler as central heating boiler, 17 to 

105 kW 

■ As multi-boiler system with cascade control and up to 4 Vitodens 

200-W (up to 420 kW) 

■ Seasonal efficiency [to DIN]: up to 98 % (H s)/109 % (H i) 

■ Stainless steel Inox-Radial heat exchanger 

– Self-cleaning of the smooth stainless steel surfaces through the 

flue gas and the condensate flowing in the same direction 

– Excellent corrosion resistance through high-grade stainless steel 

1.4571 

■ Modulating MatriX cylinder burner – in-house development and 

manufacture 

– Low emissions 

– Long service life through stainless steel MatriX mesh 

– Optimised match between the heat exchanger and the burner 

■ Intelligent Lambda Pro Control combustion controller 

– A change in the gas type requires no change of nozzle 

– Consistently high efficiency, even in case of fluctuating gas composition 

– Consistently low emissions 

– Low combustion noise 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 (45 and 

60 kW) or natural gas (80 and 105 kW) to DVGW Code of Practice 

G260 [Germany], and wall retainer. 

Fully plumbed and wired. Colour of the epoxy-coated casing: white. 

Packed separately: 

Vitotronic 100 for constant temperature mode 

or 

Vitotronic 200 for weather-compensated operation. 


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5822 432 GB 

Vitodens 200-W (cont.) 

Set up for operation with natural gas. A conversion within the gas group 

E/LL is not required. The conversion to LPG (up to 60 kW only) is made 

at the gas valve (conversion kit not required). 

Multi-boiler systems 

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

Installation on a wall in series 

Comprising: 

■ Hydraulic cascade with low loss header and thermal insulation 

■ Connection set for every boiler with: 

– Interconnecting pipes formed to suit 

– Circulation pump (3-stage) 

– Ball valves 

– Fill & drain valve 

– Check valve 

– Gas shut-off valve 

– Safety valve 

■ Thermal insulation 

■ Sensor well for flow temperature sensor 

■ Weather-compensated, digital cascade and heating circuit control 

unit Vitotronic 300-K 

■ Cascade communication module for each boiler 

Installation with a self-supporting mounting frame in series and 

as a single block 

Comprising: 


■ Connection set for every boiler with: 

– Interconnecting pipes formed to suit 

– Circulation pump (3-stage) 

– Ball valves 

– Fill & drain valve 

– Check valve 

– Gas shut-off valve 

– Safety valve 


■ Sensor well for flow temperature sensor 

■ Weather-compensated, digital cascade and heating circuit control 

unit Vitotronic 300-K 


■ Mounting frame 

– Ceiling mounting 

Note 

Order circulation pumps for heating circuits and cylinder heating separately. 

Approved quality 

VDE designation approval applied for 

CE designation according to current EC Directives 

Meets the requirements for the "Blue Angel" certificate of environmental 

excellence to RAL UZ 61. 

VITODENS 200-W VIESMANN 5 

1

1 


1.2 Specification 

Gas boiler, series B and C, category II 2N3P II 2N3P I 2N I 2N 


Rated output range 

45 and 60 kW: Specification to EN 677. 


T V/T R = 50/30 °C kW 17.0-45.0 17.0-60.0 30.0-80.0 30.0-105.0 

T V/T R = 80/60 °C kW 15.4-40.7 15.4-54.4 27.0-72.6 27.0-95.6 

Rated thermal load kW 16.1-42.2 16.1-56.2 28.1-75.0 28.1-98.5 

Type WB2B WB2B WB2B WB2B 

Product ID CE-0085 BR 0432 

IP rating 

Gas supply pressure 

IP X4D to EN 60529 

Natural gas mbar 20 20 20 20 

LPG 

Max. permissible gas supply pressure 

mbar 50 50 — — 

*1 

Natural gas mbar 25.0 25.0 25.0 25.0 

LPG mbar 57.5 57.5 — — 

Max. power consumption W 30 50 105 150 

Weight kg 65 65 83 83 

Heat exchanger capacity l 7.0 7.0 12.8 12.8 

Max. flow rate 

Limit 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 4106 

Permiss. operating pressure bar 4 4 4 4 

Dimensions 

Length mm 380 380 530 530 

Width mm 480 480 480 480 

Height mm 850 850 850 850 

Gas connection R ¾" ¾" 1" 1" 

Connection values 

in relation to the max. load 

with gas 

Natural gas E m 3 /h 4.47 5.95 7.94 10.42 

Natural gas LL m 3 /h 5.19 6.91 9.23 12.12 

LPG kg/h 3.30 4.39 — — 

Flue gas parameters *2 

Flue gas value group to G 635/G 636 G 52/G 51 G 52/G 51 G 52/G 51 G 52/G 51 

Temperature (at 30 °C return temperature) 

– at rated output °C 35 40 35 40 

– at partial load °C 33 35 33 35 

Temperature (at return temperature 60 °C) °C 65 70 65 70 

Mass flow rate 

Natural gas 

– at rated output kg/h 81.2 110.6 147.5 193.3 

– at partial load kg/h 31.1 31.1 55.8 55.8 

LPG 

– at rated output kg/h 78.2 106.7 — — 

– at partial load kg/h 26.6 26.6 — — 

Available draught Pa 250 250 250 250 

mbar 2.5 2.5 2.5 2.5 

Standard efficiency at 

T V/T R = 40/30 °C % up to 98 (H s)/109 (H i) 

Average condensate volume 

with natural gas and T V/T R = 50/30 °C l/day 14-19 23-28 25-30 35-40 

Internal pipe diameter to 

expansion vessel DN 22 22 28 28 

safety valve DN 22 22 22 22 

Condensate 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 gas 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 permissible 

operating temperatures. 


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5822 432 GB 


Gas boiler, series B and C, category II 2N3P II 2N3P I 2N I 2N 


Rated output range 



T V/T R = 50/30 °C kW 17.0-45.0 17.0-60.0 30.0-80.0 30.0-105.0 

T V/T R = 80/60 °C kW 15.4-40.7 15.4-54.4 27.0-72.6 27.0-95.6 

Flue gas connection Ø mm 80 80 100 100 

Ventilation air connection Ø mm 125 125 150 150 

Vitodens 200-W, 45 and 60 kW 


For further details regarding multi-boiler systems, see page 24. 

A 

H 

E 

480 

200 

B C D F 

400 

G176 

240 

305 

80 

752 

40 

A Expansion vessel connection G 1" 

B Safety valve 

C Heating flow G 1½" 

D Cylinder flow G 1½" 

E Gas connection R ¾" 

F Cylinder return G 1½" 

G Heating return G 1½" 

P 

L 

875 

K 

M 

1166 

N 

O 

1975 

1700 

R 

160 

100 

380 

S 

B 

850 

902 

982 

H Cable entry area at the back 

K Connection sets (accessory) 

Shown without thermal insulation (standard delivery, connection 

sets) 

L Without connection sets 

M With connection sets 

N Recommended dimension for a single boiler system 


1

1 


O Recommended dimension for a multi-boiler system 

P Flue gas/ventilation air connection with bend (accessory) 

Note 

Route all required supply cables on site and lead them into the boiler 

at the point indicated (see page 22). 

R Condensate drain 

S Top edge finished floor 

Variable speed heating circuit pump in the heating circuit connection set (accessory) 

The pump speed and consequently the pump rate is relayed to the 

pump and adjusted by the control unit subject to outside temperature 

and switching times for central heating or reduced mode via a data 

BUS. 

Individually match the minimum and maximum speed plus the speed 

for reduced mode to the existing heating system using the control unit 

codes. 

Using the diagram, the pump rate can be adjusted to the respective 

system conditions. 

Matching the pump rate of the circulation pump to the individual system 

conditions reduces the power consumption of the heating system. 

Circulation pump VIRS 7 BUS 

Rated voltage V~ 230 

Rated current A max. 0.55 

min. 0.37 

Condenser µF 3.5 

Power consumption W max. 126 

min. 42 

in the delivered condition 93 

Variable speed, fully wired, ready to plug in. 


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5822 432 GB 

Residual head of the circulation pump 

kPa 


70 

60 

50 

40 

30 

20 

10 

0 

Residual head in mbar 

700 

600 

500 

400 

300 

200 

100 

0 0 200 400 600 800 1000 

Flow rate in l/h 

Curve Circulation pump rate Setting code address "E6" 

A 30 % E6:030 

B 40 % E6:040 

C 50 % E6:050 

D 60 % E6:060 

E 70 % E6:070 

F 80 % E6:080 

G 90 % E6:090 

H 100 % E6:100 

A B C D E F G H 

1200 1400 1600 1800 2000 2200 2400 2600 

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

Circulation pump VIRS 25/7-3 



min. 0.30 

Condenser µF 3.5 

Power consumption W Stage 1 62 

Stage 2 92 

Stage 3 132 

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


1

1 


kPa 


70 

60 

50 

40 

30 

20 

10 

0 


700 

600 

500 

400 

300 

200 

100 

A Stage 1 

B Stage 2 

C Stage 3 

A B C 

0 0 200 400 600 800 1000 


Pressure drop (on the heating water side) 

For sizing an on-site circulation pump 

kPa 

60 

50 

40 

30 

20 

10 

0 

Pressure drop in mbar 

600 

500 

400 

300 

200 

100 

0 

0 500 1000 1500 


Circulation pump in the connection set for DHW cylinders 

Pump type VI RS 25/6-3 

Voltage V~ 230 

Power consumption W max. 93 

min. 46 

1200 1400 1600 1800 2000 2200 2400 2600 

2000 2500 3000 3500 


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5822 432 GB 



kPa 

60 

50 

40 

30 

20 

10 

0 

Head in mbar 

A Stage 1 

B Stage 2 

C Stage 3 

600 

500 

400 

300 

200 

100 

A B C 

0 

0 0,5 1 1,5 

Pump rate in m³/h 



For further details regarding multi-boiler systems, see page 24. 

A 

B 

K 

E 

480 

200 

D F 

160 160 

C G 

752 

40 

L 

875 

H 

A Safety valve 

B Expansion vessel connection G 1" 

C Boiler flow 7 42 mm 

D Cylinder flow 7 35 mm 

E Gas connection R 1" 

M 

1300 

N 

O 

1975 

2 2,5 3 3,5 

1700 

P 

100 

236 

530 

850 

F Cylinder return 7 35 mm 

G Boiler return 7 42 mm 

H Connection sets (accessory) 

Shown without thermal insulation (standard delivery, connection 

sets) 


1

1 


K Cable entry area at the back 

L Without connection set (accessories) 

M With connection set (accessories) 

Note 

The heating circuit connection set must be ordered separately. 

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

Circulation pump VI TOP-S25/10-3 



min. 1.75 

Power consumption W Stage 1 340 

Stage 2 395 

Stage 3 410 

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


kPa 

120 

110 

100 

90 

80 

70 

60 

50 

40 

30 

20 

10 

0 


A Stage 1 

B Stage 2 

C Stage 3 

1200 

1100 

1000 

900 

800 

700 

600 

500 

400 

300 

200 

100 

0 0 1000 


Note 

Observe further details regarding the use of a low loss header (see 

page 31). 

If the residual head of the circulation pump available as an accessory 

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 side) 

For sizing a circulation pump on site (when connecting to DHW cylinder 

from connection set) 

N Recommended dimension (single boiler system) 

O Recommended dimension (multi-boiler system) 

P Condensate drain 

Note 

Route all required supply cables on site and lead them into the boiler 

at the point indicated (see page 22). 

2000 3000 4000 5000 


A 

B 

C 

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5822 432 GB 


kPa 

60 

50 

40 

30 

20 

10 

0 


600 

500 

400 

300 

200 

100 

0 

0 1000 2000 3000 


4000 5000 6000 7000 


1

2 

Installation accessories 


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

Heating circuit connection set without circulation pump 

Part no. 7245 738 

Connections G 1½" 

Comprising: 

■ Tee with ball valve 

■ BDF valve 

■ Safety valve 

■ Gas shut-off valve with integral thermal safety shut-off valve 

■ Connection G 1" for expansion vessel 

Heating circuit connection set with variable speed circulation 

pump 

Part no. 7247 374 


Comprising: 

■ Circulation pump, variable speed, Wilo type VIRS-25/7 BUS 

■ 2 tees with ball valve 

■ Check valve 

■ 2 BDF valves 





Heating circuit connection set with 3-stage circulation pump 

Part no. 7247 341 


Modular Divicon heating circuit distributor 

Comprising: 

■ Circulation pump, 3-stage, Wilo type VIRS-25/7-3 

■ 2 tees with ball valve 


■ 2 BDF valves 





Connection set for DHW cylinders 

Part no. Z006 183 


Comprising: 

■ Circulation pump, Wilo type VIRS-25/6-3 

■ 2 ball shut-off valves 


■ Cylinder temperature sensor 

Ball valve 

Part no. 7247 373 

1 pce. G 1¼" with gasket and union nut. 

For part no. in conjunction with the different circulation pumps, see Viessmann pricelist. 


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5822 432 GB 

A 

B 

C 

D 

E 

501 

120 

HV HR 

HV 120 HR 

Diagram without thermal insulation, wall mounted 

HR Heating return 

HV Heating flow 

A Ball valves with thermometer (as programming unit) 

Determining the required internal diameter 

Throughput in m³/h 

Installation accessories (cont.) 

5,0 

2,0 

1,5 

1,0 

0,5 

0,2 

0,1 

1 

2 

3 4 5 6 


8 10 

A 

B 

C 

89 

20 30 50 80 

40 60 100 

200 

A Modular-Divicon with mixer-3 

The identified operating ranges F and G provide optimum control 

characteristics with the Modular-Divicon mixer: 

B Modular-Divicon with mixer-3 (R ¾") 

Application range: 0 to 1.0 m 3 /h 

C Modular-Divicon with mixer-3 (R 1") 

Application range: 0 to 1.5 m 3 /h 

B Connection for overflow valve 

C Circulation pump 

D Connection for bypass valve (only for versions with mixer) 

E Mixer-3 

Heating circuit distributor with or without mixer. Incl. thermal insulation. 

The dimensions of the heating circuit distributor are the same, with or 

without mixer. 

Heating circuit connection R ¾ 1 

Flow rate (max.) m 3 /h 1.0 1.5 

Installation example: Modular-Divicon with triple distribution 

manifold 

HV 

120 120 

HR 

697 



1 

3 

5 

Heating circuit output 

in kW 

120 

G1"¼" 

ΔT= 5K 

132 

635 

ΔT= 10K 

ΔT= 15K 

ΔT= 20K 

ΔT= 30K 

5,0 

2,0 

1,5 

1,0 

0,5 

0,2 

0,1 

10 20 30 40 


2

2 


Example: 

Heating circuit for radiators with an output of Q = 11.6 kW 

Heating system temperature 75/60 °C (ΔT = 15 K) 

Flow rate ´ 

² = µ · c · ΔT c = 1.163 Wh 

kg · K 

´ = 

² 

c · ΔT = 

11600 W · kg · K 

1.163 Wh · (75-60) K 

µ 

= 665 

kg 

h 

´ (1 kg ≈ 1 dm³) 

m³ 

0.665 

h 

Select the smallest possible mixer within the application range with 

value ´. 

Bypass valve 

Part no. 9557 011 

To hydraulically balance the heating circuit. Is inserted into the Modular-Divicon. 

Overflow valve 

Part no. 9557 010 

Only with manually controlled heating circuit pump. Is inserted into the 

Modular-Divicon. 

Result of this example: Modular-Divicon with mixer-3 (R ¾") 

Manifold 

With thermal insulation 

The connection between boiler and manifold must be made on site. 

■ For 2 Modular-Divicon 

Part no. 7147 860 

130 

G 1½" 

HV 120 HR HV 120 HR 

120 

457 

Rp ¾" 

A HV HR 

C B 

A Heating flow drain 

B Heating return drain 

C Connection option for expansion vessel 

HV Heating water flow 

HR Heating water return 

■ For 3 Modular-Divicon 

Part no. 7147 861 

130 

697 

HV HR HV HR HV HR 

120 

120 120 

G 1 Rp 

120 

HV HR 

A Heating flow drain 

B Heating return drain 

C Connection option for expansion vessel 




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5822 432 GB 


Pressure drop 

Pressure 

drop 

kPa 

3 

2.5 

2 

1.5 

1 

0.5 

B 

A 

0 

0 0.5 1 1.5 2 

Flow rate in m³/h 

A opposite connection 

B remote connection 

Wall mounting – manifold 

Part no. 7147 887 

101-123 

Modular-Divicon wall mounting 

Part no. 7147 886 

Comprising screws, rawl plugs and spacers. 

Circulation pump curves and pressure drop on the heating water side 

The residual pump head results from the difference between the selected 

pump curve and the pressure drop curve of the respective heating 

circuit distributor or further components (pipe assembly, distributor 

etc.). 

The pressure drop curve of a Modular-Divicon is shown in the pump 

diagrams. 

The pressure drop curve is almost equal for all Modular-Divicon 

units. 

Maximum flow rate for Modular-Divicon: 

■ with R ¾" = 1.0 m 3 /h 

■ with R 1" = 1.5 m 3 /h 

Example: 

Flow rate V = 0,665 m 3 /h 

Low loss header 

Part no. 7148 100 

Flow rate max. 4.5 m 3 /h 

With thermal insulation and integral sensor well (50 mm long) 

The connection between boiler and low loss header must be made on 

site. 

275 

G 1 

HV 120 HR 

A Sensor well 

B Optional blow-down 



Pressure drop 

Pressure 

drop 

kPa 

12 

10 

8 

6 

4 

2 

450 

HV HR 

360 

0 0 1 2 3 4 5 

Flow rate in m³/h 

Selected: 

Modular-Divicon with mixer R ¾" and circulation pump Wilo 4-3 Ku, 

pump curve 2, pump rate 0.7 m 3 /h 

Head of the relevant pump 

curve: 28 kPa 

Pressure drop – Modular-Divicon: 

2 kPa 

Residual head: 28 kPa –2 kPa = 26 kPa. 

Note 

For further components (pipe assembly, distributor, etc.) determine the 

pressure drop and deduct it from the residual head. 


2

2 


Manually controlled heating circuit pumps 

Wilo 4-3 Ku 

Pressure drop/head 

mWS 

5 

4 

3 

2 

1 

0 

40 

30 

20 

10 

Min.1 

Max. head 3 

0 

0 0.5 1.0 1.5 2.0 2.5 


kPa 50 

A Modular-Divicon 

Wilo 6-3 Ku 


mWS 

6 

5 

4 

3 

2 

1 

0 

60 

40 

30 

20 

10 

Max. head 3 

Min. head 1 

2 

0 

0 0.5 1.0 1.5 2.0 2.5 


kPa 50 


2 

Heating circuit pumps regulated by differential pressure 

According to the [German] Energy Savings Order (EnEV), circulation 

pumps in central heating systems must be sized in accordance with 

current technical rules. Circulation pumps in central heating systems 

with rated output higher than 25 kW should be equipped and designed 

in such a way that the power consumption will be automatically 

matched to the operational (capacity) requirements in at least 3 stages, 

if no safety concerns relating to the boiler make demands to the contrary. 

A 

A 

Grundfos UPS-40 


mWS 

4 

3 

2 

1 

0 

kPa 

40 

30 

20 

10 

0 


Grundfos UPS-60 


mWS 

6 

5 

4 

3 

2 

1 

0 

60 

40 

30 

20 

10 

Min. head 

Max. head 

A 

0 0.5 1.0 1.5 2.0 2.5 


Min. head 

Max. head 

A 

0 

0 0.5 1.0 1.5 2.0 2.5 


kPa 50 


In addition to the EnEV regulations, the use of regulated pumps is also 

recommended for smaller capacities. 

Design information 

The use of differential pressure regulated heating circuit pumps 

requires heating circuits with variable flow rate, e.g. single line and 

twin-line systems with thermostatic valves, underfloor heating with 

thermostatic or zone valves. 


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5822 432 GB 


Grundfos Alpha 2L 

Grundfos Alpha 2L is the simpler version of the standard pump Grundfos 

Alpha 2. 

■ Very economical HE DC pump (in accordance with Energy Label A) 

■ without power consumption indication 

■ without Autoadapt function (automatic matching to the pipework) 

■ without night setback function 

Grundfos Alpha 2 

■ Very economical HE DC pump (in accordance with Energy Label A) 

■ with power consumption indication 

■ with Autoadapt function (automatic matching to the pipework) 

■ with night setback function 

Grundfos Alpha 2L-40/Alpha 2-40 


mWS 

6 

5 

4 

3 

2 

1 

0 

60 

40 

30 

20 

10 

0 

0 0.5 1.0 1.5 2.0 2.5 


kPa 50 


B Stage 1 

C Stage 2 

D Stage 3 

E Min. proportional pressure 

F Max. proportional pressure 

G Min. constant pressure 

H Max. constant pressure 

Grundfos Alpha 2L-60/Alpha 2-60 


mWS 

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

Heating circuit connection set with 3-stage circulation pump 

Part no. 7345 107 

Comprising: 

■ Circulation pump, 3-stage, Wilo type VIRS-25/10-3 

■ 2 ball valves with adaptors Ø 42 mm (locking ring fitting) 

■ Tee with ball valve 


■ BDF valve 





6 

5 

4 

3 

2 

1 

0 

60 

40 

30 

20 

10 

0 

0 0.5 1.0 1.5 2.0 2.5 


kPa 50 


B Stage 1 

C Stage 2 

D Stage 3 

E Min. proportional pressure 

F Max. proportional pressure 

G Min. constant pressure 

H Max. constant pressure 


For flow rate up to 8 m 3 /h 

Part no. Z007 743 

Comprising: 

■ Low loss header with integral sensor well (50 mm long) 


■ Immersion temperature sensor for the low loss header 


2

2 


■ Quick-acting air vent valve 

■ 2 adaptors Ø 42 mm (locking ring fitting) 

963 

413 

204 

364 

160 

313 

Bracket for low loss header 

■ For floorstanding installation 

Part no. 7346 787 

■ For wall mounting 

Part no. 7346 788 

1078 

863 

Installation accessories for multi-boiler systems 

Hydraulic cascades 

See page 24. 

Flue gas cascade (positive pressure) 

Comprising: 

■ Flue gas non-return device for each boiler 

■ Flue gas header 

■ Terminal with condensate drain and siphon 

■ Boiler coding card 

C 

B 

B 

A Flue gas header 

B Flue gas non-return device 

C Terminal with siphon 

A 

B B 

Connection set for DHW cylinders 

Part no. 7348 934 

Connections: Ø 35 mm (locking ring fitting) 

Comprising: 

■ Connecting lines for flow and return 


■ 2-boiler system installed in series 

– For the Vitodens 200-W, 17 to 45 kW: Part no. Z005 380 











■ 4-boiler system installed as single block 





For further technical details regarding the flue gas cascades, see the 

technical guide to Vitodens flue systems. 


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5822 432 GB 

DHW cylinder 


For details regarding DHW cylinders, see the technical guide to the 

Vitodens up to 35 kW, or separate datasheets. 

Design information 

4.1 Positioning, installation 

Installation conditions for open flue operation (appliance type B) 

(Type B 23 and B 33) 

In rooms where air contamination through halogenated hydrocarbons 

can occur, such as hairdressing salons, printing shops, chemical 

cleaners, laboratories, etc., install the Vitodens only as balanced flue 

system. 

If in doubt, please contact us. 

Wall mounted boilers should not be installed in areas subject to very 

dusty conditions. 

The installation location must be kept free from frost and must be adequately 

ventilated. 

Provide a condensate drain and a blow-off line for the safety valve in 

the installation room. 

The maximum ambient temperature of the system should not exceed 

35 ºC. 

If these instructions are not observed, any consequential loss directly 

related to any of these causes is excluded from our warranty. 

Vitodens 200-W from 60 kW and multi-boiler systems 

Install boilers from 50 kW in accordance with the Combustion Order 

(FeuVo) [Germany] [or local regulations] in a separate installation 

room. Fit the main isolator outside the installation room. 

Combustion air apertures 

Gas equipment with a total rated output in excess of 50 kW must be 

provided with combustion air apertures leading to the outside. The 

cross-section should be at least 150 cm 2 and should be 2 cm 2 larger 

for each kW above 50 kW rated output. This cross-section may not be 

split over more than 2 apertures (observe FeuVo and TRGI 2008 point 

5.5.4 [or local regulations]). 

Example: 

Vitodens 200-W, 4 × 60 kW 

Total rated output 240 kW 

150 cm 2 + 190 × 2 cm 2 = 530 cm 2 or 2 × 265 cm 2 . 

The combustion air apertures should be at least 530 cm 2 or 2 × 

265 cm 2 . 

Multi-boiler systems with pressurised flue gas systems 

The Vitodens 200-W multi-boiler systems with common pressurised 

flue gas systems are designed for open flue operation (type B). 

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

Vitodens. 

Installation room (up to 50 kW) 

Permissible: 

■ Boiler installation on the same floor 

■ Adjacent rooms with interconnected room ventilation (larders, basement, 

utility rooms, etc.) 

■ Attic rooms, but only with adequate minimum chimney height to DIN 

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

Not permissible: 

■ Stair wells and common hallways; exception: Detached and twofamily 

homes of low height (top edge of the 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. 

Installation conditions for balanced flue operation (appliance type C) 

The Vitodens can be installed as appliance type C 13x, C 33x, C 43x, C 53x 

or C 63x to TRGl 2008, for balanced flue operation independent of the 

size and ventilation of the installation room. 

It may, for example, be installed in recreation rooms, in other living 

space, in ancillary rooms without ventilation, in cupboards (open at the 

top) and recesses without maintaining minimum clearances to combustible 

parts as well as in attic rooms (pitched attics and ancillary 

rooms) where the balanced flue pipe can be directly routed through 

the roof. Since the flue pipe connecting piece for balanced flue operation 

is surrounded by combustion air (coaxial pipe), no clearances 

towards combustible parts need to be maintained (for further details, 

see the technical guide "Flue gas systems for the Vitodens"). 

Connection on the flue gas side 

(for further details, see the technical guide "Flue gas systems for the 

Vitodens") 

The connecting piece to the chimney should be as short as possible. 

Therefore position the Vitodens as closely to the chimney as possible. 

No special protective measures or clearances towards combustible 

objects, e.g. furniture, cartons or similar, need to be taken/observed. 

The surface temperatures of the Vitodens and the flue system never 

exceeds 85 ºC anywhere. 

Extractors 

When installing devices with extraction to the outside (cooker hoods, 

extractors, etc.), ensure that air extraction will not create negative 

pressure inside the installation room. A return flow of flue gases could 

result, if the ventilation system and the Vitodens were to operate simultaneously. 

In such cases, install an interlocking circuit. 

For this, the internal extension H2 (accessories) can be used. This 

switches the extractors OFF when the burner is started. 

The installation location must be safe from the risk of frost. 

Provide a condensate drain and a blow-off line for the safety valve in 

the installation room. 

Electrical interlocks for extractors (extractor hoods, etc.) are not 

required with balanced flue operation. 

Vitodens 200-W from 60 kW 

Install boilers from 50 kW in a separate room in accordance with the 

Combustion Order (FeuVo) [Germany] [or local regulations]. Fit the 

main isolator outside the installation room. 

Appropriate ventilation air and extract air apertures are required in 

accordance with TRGI (see the technical guide on flue gas systems 

for the Vitodens). 


3

4 

Design information (cont.) 

Installation in a garage 

Tests carried out by the Gaswärme-Institut e.V., Essen, have confirmed 

that the Vitodens is suitable for installation in garages. 

Operation of the Vitodens in wet areas 

The Vitodens is approved for installation in wet areas (protection 

IP X4 D, splash-proof) 

Electrical connection 

Ensure the power supply complies with the requirements of your local 

power supply utility and current VDE [or local] regulations. 

Protect the power cable with a fuse with a max. rating of 16 A. 

Make the power supply (230 V~, 50 Hz) via a permanent connection. 

Connect the supply cables and accessories at the terminals inside the 

boiler. 

Allow cables/leads in the shaded area to protrude at least 800 mm from 

the wall (see diagram): 

Recommended leads/cables 

NYM-J 3 × 1.5 mm 2 2-core min. 0.75 mm 2 4-core 1.5 mm 2 

– Power cables (also for accessories) 

– DHW circulation pump 

– Central fault message 

– External extension H1 or H2 

– Outside temperature sensor 

– Vitotronic 200-H (LON) 

– Extension kit for heating circuit 

with mixer (KM BUS) 

– Vitotrol 100, type UTD 

– Vitotrol 200 

– Vitotrol 300 

– Boiler control Vitohome 300 

– Radio clock receiver 

Interlock switch 

Install an interlock for open flue operation if an extractor (e.g. cooker 

hood) is fitted in the room providing the boiler ventilation. 

For this, the internal extension H2 (accessories) can be used. This 

switches the extractors OFF when the burner is started. 

Power supply of accessories 

The power supply of accessories can be connected directly to the 

control unit. 

This connection is controlled with the system ON/OFF switch (max. 

4 A). 

Where the boiler is installed in a wet area, the power supply connection 

of accessories must not be made at the control unit. 

When installing this boiler in garages, maintain a clearance between 

the floor and the burner of at least 500 mm. Protect the boiler on site 

with a bracket or deflector against mechanical damage. 

When installing the Vitodens in wet areas, observe the safety zones 

and minimum wall clearances according to VDE 0100 [or local regulations]. 

The Vitodens 200-W may be installed in safety zone 1. 

B 

200 

752 

40 

A 

A Reference point Vitodens top edge 

B Area for electrical supply cables 

or 

3-core 1.5 mm2 NYM-O 3 x 1.5 mm 

without green/ 

yellow core 

2 

– Vitotrol 100, type UTD-RF – Vitotrol 100, type UTA 

Additional requirements when installing boilers with LPG operation 

in rooms below ground level 

According to TRF 1996 Vol. 2 – valid as of 1 September 1997 – an 

external safety solenoid valve is no longer required when installing the 

Vitodens below ground level. 

However, the high safety standard derived from the use of an external 

safety solenoid valve has proved to be valuable. We therefore recommend 

the installation of an external safety solenoid valve when installing 

the boiler in rooms below ground level. This requires the internal 

extension H1. 


5822 432 GB

5822 432 GB 


Gas connection 

Gas installations must only be carried out by an approved gas fitter 

[CORGI] who has been authorised by the relevant gas supply utility. 

Connect and size the mains gas according to TRGI 2008 or TRF 1996 

[or local regulations]. 

a Connect the mains gas according to ÖVGW-TR Gas (G1) and 

the regionally applicable Building Regulations. 

Max. test pressure 150 mbar. 

We recommend the installation of a gas filter compliant with DIN 3386 

into the gas supply line. 

Thermally activated safety shut-off valve 

According to paragraph 4, sect. 5 of the FeuVo '96 [Germany], thermally 

activated shut-off equipment, that isolates the gas supply if 

external temperatures exceed 100 ºC, must be installed in gas combustion 

equipment or in gas supply lines. These valves must isolate 

the gas supply for at least 30 minutes up to a temperature of 650 ºC. 

This should prevent the formation of explosive gas mixtures in the 

event of a fire. 

Minimum clearances 

Maintain a clearance of 700 mm in front of the Vitodens or the DHW 

cylinder for maintenance purposes. 

The gas taps supplied with the Vitodens are equipped with integral 

thermally activated safety shut-off valves. 

Sizing the gas flow limiter 

Rated output range of the Gas flow limiter 

Vitodens 

for gas type 

kW Natural gas E Natural gas 

LL 

17.0-45.0 GS 10 GS 10 

17.0-60.0 GS 16 GS 16 

30.0-80.0 GS 16 GS 16 

30.0-105.0 GS 16 GS 16 

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

not required. 


4

4 


Pre-installation for installing the Vitodens 200-W directly onto a wall 

An installation template is supplied with the Vitodens 200-W for the 

location of fixing holes for the wall mounting bracket and the location 

of the flue pipe on the wall. 

Order connection sets separately for the connection of the heating circuits 

and one DHW cylinder. 

E 

Ø 10 

40 

C 

A Reference point Vitodens top edge 

B Installation template Vitodens 

C Area for electrical supply cables. 

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

wall. 

Installation in front of a wall with a self-supporting mounting 

frame (single boiler) 

The Vitodens can be mounted on the self-supporting mounting 

frame. 

Pre-installation, multi-boiler system 

Hydraulic cascade for wall mounting and installation on self-supporting 

frames. 

Flow and return collectors with low loss header for multi-boiler systems 

of 2 to 4 Vitodens boilers in series or 4 boilers arranged as a block. 

Heating circuit connections either on the right or left. 

480 

422 

200 

B 

752 

F 

A 

D 

D Recommended dimension 

■ Single boiler system: 1975 mm 

■ Multi-boiler system: 1700 mm 

E Wall retainer 

F Top edge finished floor 

The panel supplied with the boiler cannot then be used. 


5822 432 GB

5822 432 GB 

a 


b 

c 

A B 

e 

HV 

HR 

d 

Rp ½" 

f 

HV 

HR 

Shown without the thermal insulation supplied 

A Sensor well for flow temperature sensor 

B Air vent valve 

C Connection accessories with circulation pump 

g 

C 

100 

HV 

HR 

C 

Rp ½" 

h 

k 

834 



Boiler Quantity 2x45 kW 2x80 kW 3x45 kW 3x80 kW 4x105 kW (2x2) 45 kW *3 (2x2) 80 kW *3 

2x60 kW 2x105 kW 3x60 kW 3x105 kW (2x2) 60 kW *3 (2x2) 105 kW *3 

Heating circuit R 2" — — — — — — 

connection PN6/DN — 65 65 100 100 65 100 

Boiler connection 

G 1¼" 2" 1¼" 2" 2" 1¼" 2" 

Max. flow rate m3 /h 6.9 12.1 10.3 18.1 24.1 13.8 24.1 

Dimensions 

a mm 970 1320 1320 1340 1340 1302 1340 

b mm 845 1250 1250 1260 1260 1250 1260 

c mm 295 250 250 260 260 250 260 

d mm 100 150 150 150 150 150 150 

e mm 160 200 200 280 280 200 280 

f mm 230 210 210 190 190 210 190 

g mm 1560 1640 2220 2335 2900 1585 1765 

h mm 120 160 160 200 200 160 200 

k mm 350 370 370 390 390 370 390 

l mm 80 80 80 120 120 80 120 

*3 Arranged as a block 


l 

g 

4

4 

Installation in series, directly against the wall 

≥ 200 


D 

HV 

HR 

A 


b 

a 

100 

A Flue gas cascade 

B Vitodens 

C Vitotronic 300-K (to be fitted to the wall either to the left or the 

right) 

The total length of all BUS cables (on site) should not exceed 

50 m. 

For details regarding the flue gas cascade, see page 20 and the technical 

guide on flue gas systems. 

B C 

c 

1700 

d 

e 

D Hydraulic cascade 



For further details regarding the hydraulic cascade, see page 24. 

Number of boilers 2x45 kW 2x80 kW 3x45 kW 3x80 kW 4x105 kW 

2x60 kW 2x105 kW 3x60 kW 3x105 kW 

a mm 1060 1060 1640 1640 2220 

b mm 1660 1640 2220 2335 2900 

c mm 176 176 205 205 234 

d mm 155 241 155 241 241 

e mm 388 443 388 443 443 

Multi-boiler system standard delivery 

■ Vitodens 200-W (2 to 4 boilers) 

■ Cascade control unit Vitotronic 300-K 




■ Connection accessory with circulation pumps (3-stage) and thermal 

insulation 


5822 432 GB

5822 432 GB 

Installation in series with self-supporting mounting frames 

≥ 200 


D 

E 

F 

HV 

HR 

618 

A 


b 

a 

580 

B 


B Ceiling mounting 

C Vitodens 

D Vitotronic 300-K (to be fitted to the wall either to the left or the 

right) 


50 m. 



C 

618 

D 

d 

c 

1700 

552 

675 

E Self-supporting mounting frame 

F Hydraulic cascade 




Number of boilers 2x45 kW 2x80 kW 3x45 kW 3x80 kW 4x105 kW 

2x60 kW 2x105 kW 3x60 kW 3x105 kW 

a mm 1160 1160 1740 1740 2320 

b mm 1610 1700 2270 2395 2960 

c mm 176 176 205 205 234 

d mm 325 404 325 404 404 


■ Vitodens 200-W (2 to 4 boilers) 




■ Self-supporting mounting frame with ceiling mounting 



insulation 


4

4 


Block installation, floorstanding in a room 

≥ 200 

E 

F 

A 

HV 

HR 


B 

a 

1160 


B Ceiling mounting 

C Vitodens 

D Vitotronic 300-K (to be fitted to the wall either to the left or the 

right) 


50 m. 




Boiler 4x45 kW 4x80 kW 

4x60 kW 4x105 kW 

a mm 1585 1765 

b mm 403 703 

c mm 843 1280 


■ Vitodens 200-W (4 boilers) 


C D 

618 

176 

1700 

b 

c 

E Mounting frame 

F Hydraulic cascade 





■ Hydraulic cascade with low loss header 

– Thermal insulation 

– Mounting frame 

– Ceiling mounting 


insulation 


5822 432 GB

5822 432 GB 


4.2 Condensate connection 

Route the condensate drain with a constant slope. 

Route the condensate from the flue gas system (if equipped with a 

drain), together with the boiler condensate directly or (if installed) via 

a neutralising system to the public sewer. 


A 

B 

A Drain hose (standard delivery for the Vitodens) 

B Drain outlet kit (accessories) 

Condensate drain and neutralisation 

Drain the condensate created during the heating operation in the condensing 

boiler and in the flue pipe in accordance with appropriate regulations. 

During gas combustion, the condensate will have a pH 

between 4 and 5. 

The Code of Practice ATV-DVWK-A 251 "Condensate from condensing 

boilers", that is generally based on the local waste water regulations 

[in Germany], determines conditions for draining condensate 

from condensing boilers into the public sewer system. 

The consistency of condensate drained from Vitodens condensing 

boilers meets the requirements specified in the Code of Practice ATV- 

DVWK-A 251. 

The condensate drain to the sewer connection must be able to be 

inspected. 

It must be installed with a continuous gradient and must contain a 

stench trap. Also provide a suitable facility for extracting samples. 

Condensate drains must only be made from corrosion-resistant materials 

(e.g. reinforced hoses). 

Never use any galvanised materials or those containing copper 

for pipes, connectors, etc. 

A siphon is installed in the condensate drain to prevent flue gases 

escaping. 

Local waste water regulations and/or specific technical circumstances 

may specify designs that vary from those described in the above 

Codes of Practice. 

It is advisable to contact your local authority responsible for waste 

water management prior to installation, to find out about local regulations. 

Condensate from gas combustion equipment up to 200 kW combustion 

output 

Up to a rated output of 200 kW, the condensate from a gas condensing 

boiler can generally be introduced into the public sewer system without 

prior neutralisation. 

Also ensure that your domestic drainage system is made from materials 

that are resistant to acidic condensate. 

Note 

A pipe vent valve must be installed between the siphon and the neutralising 

system. 


A 

B 

A Drain hose (standard delivery for the Vitodens) 

B Drain outlet kit (accessories) 

According to the Code of Practice ATV DVWK A 251, these materials 

include: 

■ Clay pipes 

■ Hard PVC pipes 

■ PVC pipes 

■ PE HD pipes 

■ PP pipes 

■ ABS/ASA pipes 

■ Stainless steel pipes 

■ Borosilicate pipes 

Neutralising system 

B 

A Condensate drain 

B Neutralising system 

C Venting via the roof 


C 

A 

4

4 


The Vitodens can (if required) be supplied with a separate neutralising 

system (accessories). Any condensate is piped to and treated in the 

neutralising system. 

The condensate drain to the sewer connection must be able to be 

inspected. It must be installed with a slope and stench trap on the 

sewer side, and must provide a suitable facility for extracting samples. 

Install a condensate lifting pump if the Vitodens has been installed 

below the waste water antiflooding level. 

Condensate lift pumps are available as accessories (see the Vitoset 

pricelist). 

Since the consumption of neutralisation granulate depends on the 

operating mode of the system, determine the required top-up amount 

during the first year of operation by regular checks. It is feasible that 

one fill may last longer than 12 months. 

Neutralising system for single boiler systems with 45 and 60 kW 

Part no. 9535 742 

400 DN 40 

Neutralising system for single boiler systems with 80 and 105 kW, and multi-boiler systems 

Part no. 7226 141 

118 

B 

346 

118 

A Inlet (DN 20) 

B Outlet (DN 20) 

Condensate lifting system 

A 

192 

60 

B 

420 

520 

part no. 7374 796 

Automatic 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 

■ 2 m long connecting cable for fault messaging 

■ Two 7 24 mm connection apertures for condensate inlet 

The standard delivery comprises: 

■ 6 m long drain hose 7 14 x 2 mm 

■ Non-return valve 

2000 

118 

90 

A 

145 

168 

145 

A B C 

A Condensate inlet 

B Condensate inlet with drain plug 

C Condensate drain 

148 

Specification 

Rated voltage 230 V~ 

Rated frequency 50 Hz 

Power consumption 20 W 


5822 432 GB

5822 432 GB 


IP rating IP 44 

Protection class F 

4.3 Hydraulic connection 

General 

System design 

Viessmann condensing boilers can generally be installed in any pumped 

hot water heating system (sealed system). 

Connection sets with integral circulation pump are available as accessories. 

Minimum system pressure 1.0 bar. 

The boiler water temperature is limited to 82 ºC. 

To minimise distribution losses, we recommend that you size the heat 

distribution system to a max. flow temperature of 70 ºC. 

Chemical anti-corrosion agents 

Corrosion is generally avoided in correctly installed and operated 

sealed heating systems. 

Never use chemical anti-corrosion agents. 

Some manufacturers of plastic pipes recommend the use of chemical 

additives. In such cases, only use anti-corrosion agents offered by the 

heating trade that have been approved for boilers with DHW heating 

via single-walled heat exchangers (instantaneous water heater or 

DHW cylinder). 

For this, observe the VDI guideline 2035 [or local regulations]. 

Heating circuits 

For heating systems with plastic pipes, we recommend the use of 

impermeable pipes to prevent the infusion of oxygen through the pipe 

walls. 

Provide system separation in heating systems with plastic pipes to DIN 

4726 that are permeable to oxygen. We supply a separate heat 

exchanger for this. 

Install a sludge separator in underfloor heating systems and systems 

with a large water content; see the Viessmann Vitoset pricelist. 

Connect underfloor heating systems with very large water content 

(>15 l/kW), even with condensing boilers, to heating circuits via a 3way 

mixer; see technical guide "Control of underfloor heating systems" 

or the relevant sample applications. 

Install a temperature limiter into the flow of the underfloor heating circuit 

to limit the maximum temperature. Observe the requirements of 

DIN 18560-2 [or local regulations]. 

Plastic pipework for radiators 

We also recommend the installation of a temperature limiter to restrict 

the maximum temperature of plastic pipes in heating circuits with radiators. 

Safety valve 

A safety valve in accordance with TRD 721 is part of the heating circuit 

connection set (accessory) (opening pressure 4 bar). 

Expansion vessels 

In accordance with EN 12828, water heating systems must be equipped 

with an expansion vessel. 


Application 

Design rules for system hydraulics: 

Permissible medium temperature +60 °C 

Max. head 45 kPa 

Max. capacity 450 l/h 

Zero volt contact N/C, breaking capacity 

230 VA 

Route the blow-off line in accordance with EN 12828 into a drain outlet 

(drain outlet kit available as an accessory). The drain outlet incorporates 

a siphon as a stench trap. 

Low water indicator 

According to EN 12828, a low water level indicator can be omitted for 

boilers up to 300 kW, as long as heating can be reliably prevented 

when the water level is too low. 

Viessmann Vitodens boilers are equipped with a low water indicator 

(boil-dry protection). Tests have verified that the burner will be automatically 

switched OFF in the event of water shortage due to a leak in 

the heating system and simultaneous burner operation, before the 

boiler or the flue system reach unacceptably high temperatures. 

Attic heating centre 

The installation of a low water indicator specified as compulsory by 

DVGW is not required when installing the Vitodens in an attic. 

The Vitodens condensing boilers are protected against low water levels 

in accordance with EN 12828. 

Water quality/Frost protection 

Unsuitable fill and top-up water increases the level of deposits and 

corrosion and may lead to boiler damage. 

Regarding the quality and volume of heating water, incl. fill and top-up 

water, observe VDI 2035. 

■ Thoroughly flush the entire heating system prior to filling it with water. 

■ Only use fill water of potable quality. 

■ Fill water with a water hardness in excess of the following values 

must be softened, e.g. with the small softening system for heating 

water (see the Viessmann Vitoset pricelist): 

– Vitodens up to 45 kW: 16.8 °dH (3.0 mol/m 3 ) 

– Vitodens from 60 kW and multi-boiler systems up to 200 kW: 

11.2 °dH (2.0 mol/m 3 ) 

– Multi-boiler systems above 200 kW: 8.4 °dH (1.5 mol/m 3 ) 

■ An antifreeze additive suitable for heating systems can be mixed with 

the fill water. The antifreeze manufacturer must verify its suitability, 

since otherwise damage to gaskets and diaphragms can occur as 

well as noise during heating operation. Viessmann accepts no liability 

for damage or consequential damage as a result. 

■ For commissioning or systems with a volume that is in excess of 

20 litres/kW, observe VDI 2035. 

Installation examples 

For installation examples for the Vitodens 200-W, see "System examples". 

The size of the expansion vessel is subject to the heating system 

specification and should be checked in each case. 


4

4 


■ Generally install a low loss header with the Vitodens 200-W in multiboiler 

systems. 

■ When balancing the low loss header, adjust the flow rate on the 

equipment side approx. 10 to 30 % lower than the flow rate on the 

system side (reducing the return temperature). 

■ The low loss header should be sized for the max. volume flow that 

may occur in the overall system. 

The low loss header separates the heat source (boiler circuit) from the 

downstream heating circuits. 

Install a low loss header if the maximum flow rate of an individual 

design is greater than the values shown in the table below. 

Boiler Max. flow rate 

l/h 

Vitodens 200-W, 17 - 45 kW 3500 

Vitodens 200-W, 17 - 60 kW 3500 

Vitodens 200-W, 30 - 80 kW 5700 

Vitodens 200-W, 30 - 105 kW 5700 

We recommend installing a low loss header if the minimum flow rates 

listed in the table below cannot be guaranteed. 

Boiler Min. flow rate 

l/h 

Vitodens 200-W, 17 - 45 kW 450 

Vitodens 200-W, 17 - 60 kW 450 

Vitodens 200-W, 30 - 80 kW 1300 

Vitodens 200-W, 30 - 105 kW 1300 

For installation designs in conjunction with low loss headers, see the 

relevant sample application in the "System examples" document. 

Boiler circuit 

The circulation pump in the Vitodens must be able to supply the 

required water volume against the (mostly low) pressure drop of the 

boiler circuit; the pressure drop of the low loss header is negligible. 

Subject to the water volume circulating in the generator circuit, the 

respective residual head may be determined for sizing the internal pipe 

diameters using the pump diagram; alternatively the variable speed 

pump can be adjusted accordingly. 

Heating circuit 

The central heating pumps to be installed on site must be able to 

deliver the water volume in the heating circuits against their pressure 

drop; size the pumps accordingly. 

Principle of operation 

T1 T3 

Vprimary 

Vsecondary 

T2 T4 

V primary 

V secondary 

Heating water volume in the heat source circuit (approx. 

10 - 30 % less than Vsecondary) Heating water volume heating circuit 

T1 T2 T3 T4 Qprimary Qsecondary Vprimary T1 T2 Qprimary Flow temperature boiler circuit 

Return temperature boiler circuit 

Heating circuit flow temperature 

Return temperature heating circuit 

Amount of heat supplied by the boiler 

Amount of heat transferred by the heating circuit 

< Vsecondary > T3 ≃ T4 = Qsecondary Note 

Suitable thermometers in the flow and return of the low loss header 

make adjustments easier. 

Low loss header in conjunction with Modular-Divicon 

For description and specification, see page 14. 

Low loss header for the Vitodens 200-W with 45 and 60 kW from 

the Vitoset range 

See the "Vitoset" pricelist. 

a 

b 

d 

HV 

HR 



KR Boiler return 

KV Boiler flow 

e 

KV 

KR 

c 

Flow rate 

max. 

m3 Connections 

/h 4 4 8 10 18 

- Female thread Rp 1 

- Male thread R 1¼" 2" 

- Flange DN 65 80 

Dimen 

sions 

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 kW 

See page 19. 

Low loss header with distributor/manifold for multi-boiler systems 

with 2 to 4 Vitodens 200-W 

For description and specification, see page 24. 


5822 432 GB

5822 432 GB 

Control units 

5.1 Vitotronic 100, type HC1, for constant temperature operation 

Structure and functions 

Modular design 

The control unit is integrated into the boiler. 

The control unit is comprised of a basic unit, electronic modules and 

a programming unit. 

Basic unit: 

■ ON/OFF switch 

■ Optolink laptop interface 

■ Operating and fault display 

■ Reset button 

■ Fuses 

Programming unit: 

■ Display 

■ Adjustment and display of temperatures and codes 

■ Fault message display 

■ Keys: 

– Program selection 

– Boiler water temperature 

– DHW temperature 

– Emissions test function 

Functions 

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

temperature 

■ Room temperature-dependent operation requires a Vitotrol 100, 

type UTA, UTD or UTD-RF (according to EnEV [Germany]) 

■ Heating system frost protection 

■ Integral diagnostic system 

■ Integral cylinder thermostat 

Control characteristics 

PI characteristics with modulating output. 

Setting the heating programs 

The heating system frost protection (see frost protection function) 

applies to all heating programs. 

You can select the following heating programs with the program 

keys: 

Specification, Vitotronic 100 



Rated current 6 A 

Protection class I 

Function Type 1 B to EN 60730-1 

Permissible ambient 

temperature 

– during operation 0 to +40 °C 

Installation in living spaces or boiler rooms 

(standard ambient conditions) 

■ Heating and DHW 

■ DHW only 

■ Standby mode 

Frost protection function 

The frost protection function is active in all heating programs. 

The burner is switched ON at a boiler water temperature of 5 ºC and 

will be switched OFF again at a boiler water temperature of 20 ºC. 

The circulation pump will be switched ON simultaneously with the 

burner 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 started 

at certain intervals (up to 24 times per day) for periods of approx. 

10 minutes. 

Summer mode 

Heating program "w" 

The burner starts only when the DHW cylinder needs to be heated up 

again. 

Boiler water temperature sensor 

The boiler water temperature sensor is connected to the control unit 

and built into the boiler. 

Specification 

Permissible ambient temperature 


– during storage and transport -20 to +70 °C 

Cylinder temperature sensor 

Standard delivery contains the DHW cylinder connection set. 

Specification 

Lead length 3.75 m, fully wired 




– during storage and transport –20 to +70 °C 

– during storage 

and transport –20 to +65 °C 

Electronic temperature 

limiter setting 

(heating mode) 82 °C (change not possible) 

Setting range for 10 to 68 °C 

the DHW temperature 

5.2 Vitotronic 200, type HO1, for weather-compensated operation 

Structure and functions 

Modular structure 

The control unit is integrated into the boiler. 

The control unit comprises a standard unit, electronic modules and a 

programming unit. 

Standard unit: 



■ Operating and fault display 

■ Reset button 

■ Fuses 


■ With digital time switch 

■ Illuminated display with plain text support 




5

5 

Control units (cont.) 

■ Rotary selector for the temperature in standard mode 

■ Keys: 


– Holiday program 

– Party and economy mode 

– Temperature for reduced mode 


– Emissions test function 

– Time/date 

Functions 

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

■ 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 


■ Maintenance display 

■ Cylinder temperature control with priority 

■ Auxiliary function for DHW heating (short-term heating to a higher 

temperature) 

■ Screed drying program 

■ External starting and blocking (accessories) 

The requirements of DIN EN 12831 for the heating load calculation are 

met. To reduce the heat-up load, the reduced room temperature will 

be raised in case of low outside temperatures. The flow temperature 

will be raised for a limited time to reduce the heat-up time after a setback 

period. 

According to the Energy Savings Order [Germany], the temperature in 

each room must be individually controlled, e.g. through thermostatic 

radiator valves. 


PI characteristics with modulating output. 

Time switch 

Digital time switch 

■ Individual and 7-day program 

■ Automatic summer/winter time 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 switching 

periods per day 

Shortest switching interval: 10 minutes 

Power backup: 14 days 

Setting the heating programs 




keys: 


■ DHW only 


External heating program changeover in conjunction with an external 

extension H1 or H2. 


■ The frost protection function will be started when the outside temperature 

drops below approx. +1 °C. 

With frost protection, the heating circuit pump is switched ON and 

the 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 temperature 

rises above approx. +3 °C. 

Summer mode 

Heating program "w" 

The burner starts only when the DHW cylinder needs to be heated up 

again. 

Adjusting the heating curves (slope and level) 

The Vitotronic 200 controls the boiler water temperature (= flow temperature 

of the heating circuit without mixer) and the flow temperature 

of the heating circuit with mixer (in conjunction with the extension kit 

for one heating circuit with mixer) subject to outside temperature. The 

boiler water temperature is automatically boosted by between 0 and 

40 K higher than the currently required set flow temperature (delivered 

condition 8 K). 

The flow temperature required to reach a specific room temperature 

depends on the heating system and the thermal insulation of the building 

to be heated. 

Adjusting both heating curves matches the boiler water temperature 

and the flow temperature to these operating conditions. 

Heating curves: 

The upper boiler water temperature is limited by the temperature limiter 

and the temperature set at the electronic maximum thermostat. 

The flow temperature cannot exceed the boiler water temperature. 

Boiler water or 

flow temperature in °C 

90 

80 

70 

60 

50 

40 

30 

Heating curve slope 

3.4 

3.2 

3.0 

2.8 

2.6 

2.4 

2.2 

2.0 

1.8 

1.6 

20 

20 15 10 5 0 -5 -10-15-20-25-30 

Outside temperature in °C 

1.4 

1.2 

1.0 

0.8 

0.6 

0.4 

0.2 

Heating systems with low loss header 

When using a hydraulic separation (low loss header), connect a temperature 

sensor for use in the low loss header. 

Boiler water temperature sensor 

The boiler water temperature sensor is connected to the control unit 

and built into the boiler. 

Specification 





Standard delivery contains the DHW cylinder connection set. 

Specification 






Outside temperature sensor 

Installation location: 

■ 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 floor 

Connection: 


5822 432 GB

5822 432 GB 


■ 2-core lead, length up to 35 m with a cross-section of 1.5 mm 2 (copper) 

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

41 

66 

80 

Specification, Vitotronic 200 





Permissible ambient 

temperature 


Installation in living spaces or boiler rooms 


– during storage and 

transport –20 to +65 °C 

5.3 Vitotronic 300-K, type MW2 for multi-boiler systems 

Cascade control unit for the Vitodens 200-W with a Vitotronic 100 

Weather-compensated, digital cascade and heating circuit control 

unit 

■ for multi-boiler systems up to 4 Vitodens 200-W 

■ with sequential boiler strategy 

■ for one system circuit and up to two heating circuits with mixer. Up 

to a further 32 Vitotronic 200-H heating circuit control units can be 

connected via the LON BUS (LON module required; accessory) 

■ for modulating operation in conjunction with the Vitotronic 100, type 

HC1 

■ with cylinder temperature control unit or control unit of a primary 

store system with mixer assembly 

Construction and function 

Modular structure 

The control unit comprises a standard unit, electronic modules and a 

programming unit. 

Standard unit: 


■ Emissions test switch 


■ 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 


■ The same user interface as the Vitotronic boiler control units 


■ Backlit display with plain text support 



Specification 

Protection IP 43 to EN 60529; 

safeguard through appropriate 

design and installation 

Permissible ambient temperature during 

operation, storage and transport -40 to +70 °C 

Electronic temperature 

limiter setting (heating 

mode) 82 °C (change not possible) 

Setting range for the 10 to 68 °C 

DHW temperature 

Heating curve setting 

range 

Slope 0.2 to 3.5 

Level –13 to 40 K 

■ capable of communicating via the LON BUS (LON communication 

module and terminators are available as accessories) 

■ with integral diagnostic system. 

Note 

For higher interference protection, connect all boilers with the 

Vitotronic 100 and the Vitotronic 300-K cascade control unit to the 

same phase. 

■ Rotary selector for the temperature in standard mode 

■ Keys: 

– Temperature for reduced mode 



– Party and economy mode 


– Heating circuit curves for system flow temperature and heating 

circuit flow temperature 

– Heating circuit selection 

Functions 

■ Weather-compensated regulation of system/boiler water temperature 

of a multi-boiler system with up to 4 Vitodens 200-W with 

Vitotronic 100, type HC1 (modulating temperature) and the flow temperature 

of the heating circuits with mixer 

■ Control of the Vitotronic 100, type HC1 of the boilers in accordance 

with a boiler sequence strategy (can be freely selected) 

■ Electronic maximum temperature limiter 

■ Demand-dependent heating circuit pump shutdown 

■ Adjustment of a variable heating limit 


5

5 


■ Anti-seizing pump protection 

■ Central fault message 


■ Adaptive cylinder thermostat with priority (heating circuit pump OFF, 

mixer closed) 

■ Auxiliary function for DHW heating (short-term heating to a higher 

temperature) 

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

valve 

■ Screed drying, for underfloor heating systems 

DHW heating in a multi-boiler system 

A Vitotronic 300-K 

A 

M M 


■ 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 to 10 to 95 °C (available temperature limited 

by the max. boiler flow temperature). 

Time switch 

Digital time switch 

■ Day and week program, annual calendar 

■ Automatic summer/winter time 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 switching 

periods per day 

Shortest switching interval: 10 minutes 

Power backup: 5 years 

Setting heating programs 




keys: 


■ Only DHW 


Optional external changeover of heating program for all heating circuits 

together or for selected heating circuits only. 

The requirements of DIN EN 12831 for the heating load calculation are 

met. To reduce the heat-up load, the reduced room temperature will 

be raised in case of low outside temperatures. The flow temperature 

will be raised for a limited time to reduce the heat-up time after a setback 

period. 

According to the Energy Savings Order [Germany], the temperature in 

each room must be individually controlled, e.g. through thermostatic 

radiator valves. 


■ The frost protection function will be started when the outside temperature 

drops below approx. +1 °C. 

With frost protection, the heating circuit pump is switched ON and 

the 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 temperature 

rises above approx. +3 °C. 

Summer mode 

("DHW only") 

One or several burner(s) start(s), when the DHW cylinder needs to be 

heated up (controlled by the cylinder temperature control unit). 

Adjusting the heating curves (slope and level) 

Subject to heating system: 

■ The Vitotronic controls the flow temperature of up to 2 heating circuits 

with mixer in weather-compensated mode 

■ The Vitotronic controls the system/flow temperature automatically 0 

to 40 K (delivered condition 8 K) higher than the current maximum 

set flow temperature 

The flow temperature required to reach a specific room temperature 

depends on the heating system and the thermal insulation of the building 

to be heated. 

Adjusting the heating curves matches the system flow temperature 

and the heating circuit flow temperature to these conditions. 


5822 432 GB

5822 432 GB 


Boiler water or 

flow temperature in °C 

90 

80 

70 

60 

50 

40 

30 

Heating curve slope 

3.4 

3.2 

3.0 

2.8 

2.6 

2.4 

2.2 

2.0 

1.8 

1.6 

20 

20 15 10 5 0 -5 -10-15-20-25-30 

Outside temperature in °C 

1.4 

1.2 

1.0 

0.8 

0.6 

0.4 

0.2 

The upper flow temperature is limited by temperature controller "R" 

and the electronically set maximum temperature of the Vitotronic 100 

boiler control units, type HC1. 

Outside temperature sensor 

Installation location: 

■ 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 floor 

Connection: 



41 

66 

80 

Specification, Vitotronic 300-K 

Rated voltage: 230 V~ 

Rated frequency: 50 Hz 

Rated current: 6 A 

Power consumption: 10 W 

Safety class: I 

Protection: IP 20 D to EN 60529, 

ensure through design/ 

installation 

Function: Type 1B to EN 60730-1 


– during operation: 0 to +40 °C use in the living 

space or in boiler rooms 


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

Specification 




Permissible ambient temperature during 

operation, storage and transport -40 to +70 °C 

Immersion temperature sensor 

To capture the common flow temperature of the multi-boiler system. 

This sensor is inserted into the sensor well of the low loss header or it 

is secured with a tie. 

Specification 


IP rating IP 32 to EN 60529; 





Specification 


IP rating IP 32 to EN 60529; 




Rated breaking capacity of the relay outputs: 

– Heating circuit pumps or heat 

exchanger set sÖ: 4(2) A 230 V~ 

– Circulation pump for cylinder heating 4(2) A 230 V~ 

sA: 

– 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 system 

or 

Mixer motor gS: 0.2(0.1) A 230 V~ 

– Overall max. 6 A 230 V~ 


5

5 


Dimensions 

584 

A Vitotronic 300-K 

B Mounting panel 

A 

B 

297 

Delivered condition Vitotronic 300-K 

108 

172 

■ Programming unit with backlit plain text prompts 

■ Cascade communication module (corresponding to no. Vitodens) 

■ Outside temperature sensor 

■ Flow temperature sensor 


■ Mounting panel 

The control unit is fitted to the wall with a mounting panel. 

5.4 Accessories for the Vitotronic 

Allocation to control unit types 

A 

B 

An extension kit (accessories) is required for each heating circuit with 

mixer. 

The LON communication module and BUS terminators are available 

as accessories to enable communication. 

Heating system with DHW cylinder 

Order the circulation pump with check valve or the Vitotrans 222 primary 

store system separately. 

Vitotronic 100 200 300-K 

Type 

Accessories 

HC1 HO1 MW2 

Vitotrol 100, type UTA x 

Vitotrol 100, type UTD x 

External extension H4 x 

Vitotrol 100, type UTD-RF x 

Vitotrol 200 x x 

Vitotrol 300 x x 

Room temperature sensor x x 

Radio clock receiver x x 

Function extension 0–10 V x 

Immersion temperature sensor x 

Cylinder temperature sensor x x 

Vitocom 100 x x x 

Extension kit for one heating circuit with mixer x 

Extension kit for one heating circuit with mixer with integral mixer 

motor 

x 

Extension kit for one heating circuit with mixer with separate mixer 

motor 

x 

Mixer motor for flanged mixers x x 

Immersion thermostat x x 

Contact thermostat x x 

LON communication module x x 

LON connecting cable x x 

LON coupling x x 

LON plug-in connector x x 

LON socket x x 

Terminator x x 

KM BUS distributor x x x 

Internal extension H1 x x 

Internal extension H2 x x 

External extension H1 x x 

External extension H2 x x 


5822 432 GB

5822 432 GB 


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 programmable) 

■ Shortest switching interval 15 minutes 

Install the Vitotrol 100 in the main living room on an internal wall opposite 

radiators, but not inside shelf units, recesses, immediately by a 

door 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 mm 2 (without green/yellow) for 

230 V~. 

34 

150 

90 

Vitotrol 100, type UTD 

Part no. 7179 059 

Room thermostat 

■ With switching output (two-point output) 


■ With individual day and 7-day programs 

■ With rotary selector for the following settings: 

– Standard room temperature "Permanent comfort" 

– Reduced room temperature "Permanent setback" 

– Frost protection temperature "Frost" 

– 2 fixed time programs 

– 1 individually adjustable time program 


■ With selector keys for party and economy mode 




Operation without power supply (two 1.5 V round alkaline cells, 

type LR6 (AA), which run for approx. 18 months) 

Control unit connection: 

2-core cable with a cross-section of 1.5 mm 2 for 230 V~ 

Connection via a LV cable is possible in conjunction with the external 

extension H4 (accessories). 

Specification 

Rated voltage 230 V/50 Hz 

Rated breaking capacity of the contact 

6(1) A 250 V~ 

Protection IP 20 to EN 60529 






Set value range for standard and 

reduced mode 10 to 30 °C 

Set room temperature in standby 

mode 6 °C 

30 

144 

98 

Specification 

Rated voltage 3 V– 

Rated breaking capacity of the zero 

volt contact 

– max. 6(1) A 230 V~ 

– min. 1 mA 5 V– 




Function RS type 1B to EN 60730-1 




Setting range 

– Comfort temperature 10 to 30 °C 

– Setback temperature 10 to 30 °C 

– Frost temperature 6 to 10 °C 

Power reserve during battery 

change 10 min 


5

5 


External extension H4 

Part no. 7197 227 

Connection extension for connecting the Vitotrol 100, type UTD or 

24 V clock thermostats via a LV cable. 

With cable (0.5 m long) and plug for the connection to the 

Vitotronic 100. 

72 

130 

45 

Vitotrol 100, type UTD-RF 

Part no. 7160 432 

Room thermostat with integral wireless transmitter and one receiver 


■ With individual and seven-day programs 

■ With rotary selector for the following settings: 

– Standard room temperature "Permanent Comfort" 

– Reduced room temperature "Permanent Setback" 

– Frost protection temperature "Frost" 

– 2 fixed time programs 

– One individually adjustable time program 


■ With selector keys for party and economy mode 




Operation of the room thermostat without power supply (two 1.5 V 

round alkaline cells, type LR6 (AA) that last for approx. 18 months) 

Receiver with reception strength indicator and indication of the relay 

state. 

Connection of the receiver to the control unit: 

■ 4-core cable with a cross-section of 1.5 mm 2 for 230 V~ 

or 

■ 3-core cable without green/yellow core 

30 

144 

98 

31 

80 

120 

Specification 


Output voltage 24 V~ 


Power consumption 2.5 W 

Load 24 V~ (max.) 10 W 


Protection IP 41 



Installation in living spaces or 

boiler rooms (standard ambient 

conditions) 


Specification, room thermostat 

Rated voltage 3 V– 

Transmission frequency 868 MHz 

Transmission < 10 mW 

Range approx. 25 - 30 m inside buildings, 

subject to construction 


ensure through appropriate 

design/installation 

Function RS Type 1B to EN 60730-1 




Setting range 

– Comfort temperature 10 to 30 °C 

– Setback temperature 10 to 30 °C 

– Frost temperature 6 to 10 °C 

Power reserve during battery 

change 10 min 

Specification, receiver 

Operating voltage 230 V~ +/– 10% 50 Hz 

Rated breaking capacity of the zero 1 A, 250 V~ 

volt contact 




Protection class II to EN 60730-1 subject to correct 

installation 

Permissible ambient temperature 0 to +55 °C 

Notes regarding room temperature hook-up (RS function) for remote control units 

Never activate the RS function for underfloor heating circuits (inertia). 


5822 432 GB

5822 432 GB 

In heating systems with a heating circuit without mixer and heating 

circuits with mixer, the RS function must only affect the heating circuit 

with mixer. 

Information regarding the Vitotrol 200 and 300 

For every heating circuit in a heating system, one Vitotrol 200 or one 

Vitotrol 300 can be deployed. 

Vitotrol 200 

Part no. 7450 017 

KM BUS subscriber 

The Vitotrol 200 remote control regulates the heating program for one 

heating circuit and the required set room temperature in standard 

mode, from any room in the house. 

The Vitotrol 200 is equipped with backlit heating program selection 

keys as well as a party and economy key. 

The fault display shows faults on the control unit. 

WS function: 

Installation anywhere in the building. 

RS function: 

Installation in the main living room on an internal wall opposite radiators. 

Never install inside shelf units, recesses, immediately by a door 

or heat source (e.g. direct sunlight, fireplace, TV set, etc.). 

The integral room temperature sensor captures the actual room temperature 

and effects any necessary correction of the flow temperature 

as well as a rapid heat-up at the start of the heating operation (if 

appropriately programmed). 

Connection: 

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

control units) 


■ LV plug part of the standard delivery 

115 


75 

Vitotrol 300 

30 

Part no. 7248 907 


The Vitotrol 300 remote control regulates the required set room temperature 

for one heating circuit in standard and reduced mode, the 

heating program and the switching times for central heating, DHW 

heating and the DHW circulation pump. 

The Vitotrol 300 provides a backlit display as well as backlit heating 

program keys, a party and economy key, automatic summer/winter 

time changeover, keys for holiday program, day and time. 

WS function: 

Installation at any point in the building. 

RS function: 


Never install inside shelf units, niches, immediately by a door or 

heat source (e.g. direct sunlight, fireplace, TV set, etc.). 

The integral room temperature sensor captures the actual room temperature 

and effects any necessary correction of the flow temperature 

as well as a rapid heat-up at the start of the heating operation (if suitably 

encoded). 

Connection: 

Specification 

Power supply via KM BUS 


Protection class III 

Protection level IP 30 to EN 60529; 





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

Set room temperature range 10 to 30 °C 

adjustable from 

3 to 23 °C or 

17 to 37 °C 

The set room temperature for reduced mode is adjusted at the control 

unit. 

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

control units) 


■ LV plug as standard delivery 

115 

194 

Specification 

Power supply via KM BUS 



30 

5

5 









Room temperature sensor 

Part no. 7408 012 

Separate room temperature sensor as supplement to the Vitotrol 200 

and 300; to be used if the Vitotrol 200 or 300 cannot be installed inside 

the main living room or in a suitable position where the unit can capture 

and adjust the temperature. 


Never install inside shelf units, recesses, immediately by a door 

or heat source (e.g. direct sunlight, fireplace, TV set, etc.). 

Connect the room temperature sensor to the Vitotrol 200 or 300. 

Connection: 

■ 2-core lead with a cross-section of 1.5 mm 2 (copper) 

■ Lead length from the remote control up to 30 m 


20 

□80 

Radio clock receiver 

Part no. 7450 563 

For receiving the DCF 77 time signal (location: Mainflingen near Frankfurt/Main). 

Radio controlled setting of time and date. 

Install on an outside wall, facing the transmitter. The reception may be 

reduced by metallic elements in the building structure, e.g. steel reinforced 

concrete, neighbouring buildings and sources of electro-magnetic 

interference, e.g. HV and public transport lines. 

Connection: 


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

Function extension 0 to 10 V 

Part no. 7174 718 


Including cables with plug fÖ and aVG. 

■ To specify a set boiler water temperature via a 0-10 V input for a 

temperature range of 10 to 100 °C (0 to 1 °V≙boiler OFF) 

■ To control a feed pump connected to a Vitotronic 200-H, e.g. in a 

substation. 

■ To signal reduced mode and to regulate the heating circuit pump to 

a lower speed. 

Set room temperature range 

– for standard mode 10 to 30 °C 

adjustable to 

3 to 23 °C or 

17 to 37 °C 

– for reduced mode 3 to 37 °C 

Specification 


Protection level IP 30 to EN 60529; 





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

84 

41 

130 

66 

80 

217 

Specification 




5822 432 GB

5822 432 GB 



Rated breaking capacity of the relay out- 4(2) A 230 V 

put 

IP rating IP 42 to EN 60529; ensure 

through design/installation 

Vitocom 100, type GSM 

■ Without SIM card 

Part no. Z004594 

■ With contract SIM card for the operation of the Vitocom 100 via 

mobile phone 

Part no. Z004615 

Note 

For further information regarding the conditions of contract, see the 

Viessmann pricelist. 

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 supply cable with 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 of the selected mobile phone 

operator. 

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

Extension kit for one heating circuit with mixer with integral mixer motor 

Part no. 7178 995 

KM BUS user 

Components: 

■ Mixer electronics with mixer motor for Viessmann mixer DN 20 to 50 

and R½" to 1¼" 

■ Flow temperature sensor (contact temperature sensor), lead length 

2.2 m, fully wired, for specification, see below 

■ Connecting plug for the heating circuit pump 

■ Power supply cable (3.0 m long) 

■ BUS connecting cable (3.0 m long) 

The mixer motor is mounted directly onto the Viessmann mixer DN 20 

to 50 and R ½" to 1¼". 




72 

130 

50 

Specification 

Rated voltage 230 V ~ 


Rated current 15 mA 


Protection class II 

Protection IP 41 to EN 60529; safeguard 

through appropriate design 

and installation 

Function Type 1B to EN 60 730-1 




boiler rooms (standard ambient 

conditions) 


On-site connection 

Fault input DE 1 230 V~ 

Mixer electronics with mixer motor 

182 

185 

180 

Specification 




Protection IP 32D to EN 60529 








5

5 

Rated breaking capacity of the relay 

output for heating circuit pump sÖ 4(2) A 230 V~ 

Torque 3 Nm 

Runtime for 90 ° ∢ 120 min 

Flow temperature sensor (contact sensor) 

40 

42 

76 

Secured with a tie. 

Extension kit for one heating circuit with mixer for separate mixer motor 

Part no. 7178 996 

KM BUS user 

For the connection of a separate mixer motor 

Components: 

■ Mixer electronics for the connection of a separate mixer motor 


5.8 m, fully wired 


■ Mixer motor terminals 

■ Power supply cable (3.0 m long) 

■ BUS connecting cable (3.0 m long) 

Mixer electronics 

175 


185 

145 

Specification 




Protection IP 32D to EN 60529 



Specification 











Rated capacity of the relay outputs 

Heating circuit pump sÖ 4(2) A 230 V~ 

Mixer motor 0.2(0.1) A 230 V~ 

Required runtime of the mixer motor 

for 90 ° ∢ approx. 120 s 


40 

42 

76 


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

Part no. 7450 650 

Comprising: 

■ Mixer motor 


5.8 m, fully wired 


■ Mixer motor terminals 

■ Connecting cable (4.2 m long) 

Specification 







The mixer motor is mounted directly onto the mixer DN 20 to 50 or 

R ½" to 1¼". 


5822 432 GB

5822 432 GB 

Mixer motor 

130 


180 

90 

Specification, extension kit 





IP rating IP 32D to EN 60529; 

ensure through design/ 

installation 




Immersion thermostat 

Part no. 7151 728 

May be used as a maximum temperature limiter for underfloor heating 

systems. 

The temperature limiter is installed into the heating flow and switches 

the heating circuit pump OFF if the flow temperature is too high. 

72 

130 

95 

Contact thermostat 

200 

Part no. 7151 729 

May be used as a maximum temperature limiter for underfloor heating 

systems (only in conjunction with metallic pipes). 

The temperature limiter is installed into the heating flow and switches 

the heating circuit pump OFF if the flow temperature is too high. 

Torque 3 Nm 

Runtime for 90° ∢ 120 s 


76 

42 


40 

Specification 

IP rating IP 32 acc. to EN 60529 






Mixer motors 

See datasheet "Control unit accessories". 

Specification 


Setting range 30 to 80 °C 

Switching differential max. 11 K 

Breaking capacity 6(1.5) A 250 V~ 

Setting scale inside the casing 

Stainless steel sensor well R ½" x 200 mm 

DIN reg. no. DIN TR 116807 

or 

DIN TR 96808 


5

5 


72 

130 

95 

Immersion temperature sensor 

Part no. 7179 488 

To capture the low loss header temperature. 

LON communication module 

PCB for data exchange with the Vitotronic 200-H and for connecting 

to a higher level building management system. 

LON connecting cable for data exchange between control units 

Vitotronic 300-K for the Vitotronic 200-H 

Part no. 7143 495 

Specification 


Setting range 30 to 80 °C 

Switching differential max. 14 K 

Breaking capacity 6(1.5) A 250V~ 

Setting scale inside the casing 

DIN reg. no. DIN TR 116807 

or 

DIN TR 96808 

Specification 






■ For installation into the Vitotronic 200 

Part no. 7179 113 

■ For installation into the Vitotronic 300-K 

Part no. 7172 174 

Cable length 7 m, fully wired. 


5822 432 GB

5822 432 GB 


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 RJ45 

Part 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, screened 

or 

Solid conductor AWG 26-22 / 0.13 mm 2 - 0.32 mm 2 , 

Conductor AWG 26-22 / 0.14 mm 2 - 0.36 mm 2 

7 4.5 mm - 8 mm 

Terminator (2 pce.) 

Part no. 7143 497 

To terminate the LON BUS at the first and last control unit. 

KM BUS distributor 

Part no. 7415 028 

For the connection of 2 to 9 devices to the Vitotronic KM BUS. 

84 

130 

Internal extension H1 

217 

Part no. 7179 057 

Electronic PCB for installation into the control unit. 

on-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, screened 

or 

Solid conductor AWG 26-22 / 0.13 mm 2 - 0.32 mm 2 , 

Conductor AWG 26-22 / 0.14 mm 2 - 0.36 mm 2 

7 4.5 mm - 8 mm 

on-site 

– 2 LON sockets RJ45, CAT6 

Part no. 7171 784 

Specification 








Using the extension enables 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: 

2(1) A 250 V~ 

– 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 HO1: 

Connection of a DHW circulation pump 

Specification 



Internal extension H2 

Part no. 7179 144 

Electronic PCB for installation into the control unit. 


5

5 



– External extractor interlock 6(3) A 250 V~ 

and one of the following functions: 

2(1) A 250 V~ 


– Connection of a central fault message 




Specification 




Part no. 7179 058 

Function extension inside a casing for wall mounting. 



– Connection of a central fault message 0.4(0.2) A 250 V~ 





– Minimum boiler water temperature demand 

– External blocking 

– Set boiler water temperature defaulted via a 0-10 V input 


External heating program changeover 

84 


130 

217 


Part no. 7179 265 

Function extension inside a casing for wall mounting. 

every 2(1) A 250 V~ 

total max. 4 A~ 

Specification 










boiler rooms 






2(1) A 250 V~ 


– Minimum boiler water temperature demand 

– External blocking 


External heating program changeover 


5822 432 GB

5822 432 GB 


130 

72 

95 

Appendix 

6.1 Regulations / Directives 

Regulations and Directives 

The design and operational characteristics of the Vitodens gas condensing 

boilers from Viessmann meet the requirements of EN 297. 

They are CE-designated. 

They may be installed in sealed heating systems with permissible flow 

temperatures (= safety temperatures) up to 100 ºC compliant with 

EN 12828. The maximum flow temperature is approx. 15 K below the 

safety temperature. 

Observe all standards and guidelines applicable to the installation and 

operation of this system in your country. 

Only qualified contractors must carry out the installation, the mains gas 

and flue gas connections, the commissioning, the electrical connection 

as well as general maintenance and repair work. 

The installation of a condensing boiler may need to be notified to and 

approved by your local gas supplier. 

Specification 










boiler rooms 



In some regions, permits may be required for the flue system and condensate 

drain into the public sewer. 

In some countries, the relevant flue gas inspector and water authorities 

must be informed prior to commencing the installation. 

We recommend that you carry out maintenance and cleaning procedures 

annually. As part of the maintenance procedure, check the correct 

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 countries 

other than those stated on the type plate. That contractor must also 

arrange the acceptance in accordance with the statutes of that country. 

EnEV [Germany] Energy Savings Order 

1. BImSchV First order for the implementation of the Federal Immission Act (order regarding small and medium-sized 

combustion equipment) 

FeuVo [Germany] Fire Regulations of the Federal States 

DIN 1986 Materials drain system 

DIN 1988 Potable water pipe systems on properties 

DIN 4753 Water heaters and DHW systems for DHW and process water 

DIN 18160 Domestic chimneys 

DIN 18380 Heating systems and central DHW heating systems (VOB) 

DIN 57116 Electrical equipment for combustion systems 

EN 677 Gas condensing boiler 

EN 12828 Heating systems in buildings – design of hot water heating systems 

EN 12831 Heating systems in buildings - process for calculating the standard heating load 

EN 13384 Flue gas systems – thermal and flow technical calculations 

ATV DVWK A 251 Introduction of condensate from gas and oil combustion systems [into public sewers] 

DVGW G 260 Gas condition 

DVGW G 600 Technical rules for gas installations (TRGI) 

DVGW G 688 Gas consumption equipment, condensing technology 

DVGW/DVFG Technical rules for LPG (TRF) 

DVGW VP 113 Systems comprising combustion equipment and flues 

VDI 2035 Guidelines for the prevention of losses through corrosion and scaling in hot water heating systems 

VdTÜV 1466 Water quality datasheet 

VDE Regulations and special regulations of local energy supply companies. 


6

Keyword index 

A 

Accessories 

■ for control units.............................................................................38 

Adjusting the heating curves............................................................34 

Anti-corrosion agents.......................................................................31 

Antifreeze.........................................................................................31 

B 

Balanced flue operation...................................................................21 

Boiler water temperature sensor................................................33, 34 

C 

Cascade control unit........................................................................35 

Combustion air supply......................................................................21 

Condensate......................................................................................29 

Condensate connection...................................................................29 

Constant temperature control unit 

■ Basic unit......................................................................................33 

■ Frost protection function...............................................................33 

■ Functions......................................................................................33 

■ Heating programs.........................................................................33 

■ Layout...........................................................................................33 

■ Programming unit..........................................................................33 

Contact thermostat...........................................................................45 

Control unit 

■ for constant temperature operation...............................................33 

■ for weather-compensated operation.............................................33 

D 

Distributor with low loss header.......................................................32 

E 

Electrical connection........................................................................22 

ENEV.........................................................................................34, 36 

Expansion vessel.............................................................................31 

Extension 

■ external H1....................................................................................48 

■ external H2....................................................................................48 

■ internal H1.....................................................................................47 

■ internal H2.....................................................................................47 

External extension H1......................................................................48 

External extension H2......................................................................48 

F 

Fill water...........................................................................................31 

Frost protection function.......................................................33, 34, 36 

G 

Gas connection................................................................................23 

H 

Hydraulic connection........................................................................31 

I 

Immersion thermostat......................................................................45 

Initial heat-up....................................................................................31 

Installation conditions.......................................................................21 

Installation room...............................................................................21 

Interlocking circuit............................................................................21 

Interlock switch.................................................................................22 

Internal extension H1.......................................................................47 

Internal extension H2.......................................................................47 

K 

KM BUS distributor...........................................................................47 

L 

Leads/cables....................................................................................22 

Level.................................................................................................34 

LON communication module............................................................46 

Low loss header...............................................................................31 

Low water indicator..........................................................................31 

M 

Mixer extension 

■ Integral mixer motor......................................................................43 

■ Separate mixer motor...................................................................44 

Mixer extension kit 

■ Integral mixer motor......................................................................43 

■ Separate mixer motor...................................................................44 

N 

Neutralisation...................................................................................29 

Neutralising system..........................................................................29 

O 

Open flue operation..........................................................................21 

Outside temperature sensor.......................................................34, 37 

P 

Protection.........................................................................................22 

R 

Room temperature sensor...............................................................42 

Room thermostat........................................................................39, 40 

S 

Safety equipment.............................................................................31 

Safety valve......................................................................................31 

Slope................................................................................................34 

Standard unit....................................................................................33 

System design..................................................................................31 

T 

Temperature sensor 

■ Boiler water temperature.........................................................33, 34 

■ Outside temperature...............................................................34, 37 

■ Room temperature........................................................................42 

Thermally activated safety shut-off valve.........................................23 

Thermostat 

■ Contact temperature.....................................................................45 

■ Immersion temperature.................................................................45 

Time switch................................................................................34, 36 

V 

Vitocom 

■ 100, type GSM..............................................................................43 

Vitotrol 

■ 200................................................................................................41 

■ 300................................................................................................41 

■ UTA...............................................................................................39 

■ UTD...............................................................................................39 

■ UTD-RF.........................................................................................40 

W 

Water quality....................................................................................31 

Weather-compensated control unit 

■ Frost protection function.........................................................34, 36 

■ Functions................................................................................33, 34 

■ Heating programs.........................................................................34 

■ Layout...........................................................................................33 

■ Programming unit..........................................................................33 

■ Standard unit.................................................................................33 

Wet area...........................................................................................22 


5822 432 GB

5822 432 GB 

VITODENS 200-W VIESMANN 51

Viessmann Werke GmbH&Co KG 

D-35107 Allendorf 

Telephone: +49 6452 70-0 

Fax: +49 6452 70-2780 

www.viessmann.com 

Subject to technical modifications. 

Viessmann Limited 

Hortonwood 30, Telford 

Shropshire, TF1 7YP, GB 

Telephone: +44 1952 675000 

Fax: +44 1952 675040 

E-mail: info-uk@viessmann.com 


5822 432 GB 

Printed on environmentally friendly, 

chlorine-free bleached paper

VIESMANN - Viessmann

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