Viessmann Vitodens 200-W B2HA series Quick start guide

VIESMANN VITODENS 200-W
Gas condensing boiler
12 to 150 kW
As a multi boiler system up to 594 kW
VITODENS 200-W Type B2HA
Wall mounted gas condensing boiler
With modulating MatriX cylinder burner for natural gas and
LPG
For room sealed or open flue operation
5822432 GB 5/2018
Technical guide

Index
1. Vitodens 200-W 1.1 Product description ....................................................................................................... 4
1.2 Specification for Vitodens 200-W, 49 and 60 kW .......................................................... 7
1.3 Specification for Vitodens 200-W, 80 and 99 kW .......................................................... 13
1.4 Specification for Vitodens 200-W, 120 and 150 kW ...................................................... 21
2. Installation accessories 2.1 Installation accessories for Vitodens 200-W, 49 and 60 kW ......................................... 29
■ Heating circuit connection set with variable speed high efficiency circulation pump
and low loss header .................................................................................................. 29
■ Connection set for heating circuit without circulation pump for combination with
external system separation or heating water buffer cylinder ..................................... 29
■ DHW cylinder connection set .................................................................................... 29
■ Connection set for combination of Vitodens 200-W with CHP unit ........................... 30
■ Connection accessories for installation to the left/right ............................................. 30
■ Connection accessories for installation to the top/bottom ......................................... 30
■ Dual sensor well for combination of Vitodens 200-W with heat pump ...................... 31
■ Wall mounting bracket .............................................................................................. 31
■ Mounting frame ......................................................................................................... 31
■ Immersion temperature sensor (for low loss header) ............................................... 32
■ CO limiter .................................................................................................................. 32
2.2 Installation accessories for Vitodens 200-W, 80 and 99 kW ......................................... 33
■ Heating circuit connection set with variable speed high efficiency circulation pump
and low loss header .................................................................................................. 33
■ Connection set for heating circuit with high efficiency circulation pump for combi-
nation with external system separation or heating water buffer cylinder .................. 33
■ DHW cylinder connection set .................................................................................... 33
■ Connection set for combination of Vitodens 200-W with CHP unit ........................... 34
■ Connection accessories for installation to the left/right ............................................. 34
■ Connection accessories for installation to the top/bottom ......................................... 34
■ Dual sensor well for combination of Vitodens 200-W with heat pump ...................... 35
■ Wall mounting bracket .............................................................................................. 35
■ Mounting frame ......................................................................................................... 35
■ Immersion temperature sensor (for low loss header) ............................................... 36
■ CO limiter .................................................................................................................. 36
2.3 Installation accessories for Vitodens 200-W, 120 and 150 kW ..................................... 37
■ Heating circuit connection set with variable speed high efficiency circulation pump
and low loss header .................................................................................................. 37
■ Connection set for heating circuit with high efficiency circulation pump for combi-
nation with external system separation or heating water buffer cylinder .................. 37
■ DHW cylinder connection set .................................................................................... 37
■ Connection set for combination of Vitodens 200-W with CHP unit ........................... 38
■ Connection accessories for installation to the left/right ............................................. 38
■ Connection accessories for installation to the top/bottom ......................................... 38
■ Dual sensor well for combination of Vitodens 200-W with heat pump ...................... 39
■ Wall mounting bracket .............................................................................................. 39
■ Mounting frame ......................................................................................................... 39
■ Immersion temperature sensor (for low loss header) ............................................... 40
2.4 Divicon heating circuit distributor .................................................................................. 41
2.5 Installation accessories for multi boiler systems ........................................................... 47
■ Hydraulic cascades ................................................................................................... 47
■ Flue gas cascades (positive pressure) ..................................................................... 48
3. DHW cylinder 3.1 Product description ....................................................................................................... 49
4. Design information 4.1 Siting, installation .......................................................................................................... 49
■ Siting conditions for open flue operation (appliance type B) ..................................... 49
■ Siting conditions for room sealed operation (appliance type C) ................................ 50
■ Operation of the Vitodens in wet rooms .................................................................... 50
■ Electrical connection ................................................................................................. 51
■ Gas connection ......................................................................................................... 52
■ Minimum clearances ................................................................................................. 52
■ Wall mounting Vitodens 200-W, 49 to 99 kW (single boiler) ..................................... 52
■ Wall mounting Vitodens 200-W, 120 to 150 kW (single boiler) ................................. 54
■ Installation with mounting frame, Vitodens 200-W, 49 to 150 kW (single boiler) ...... 56
■ Multi boiler system .................................................................................................... 57
4.2 Condensate connection ................................................................................................ 71
■ Condensate drain pipe and neutralisation ................................................................ 72
4.3 Hydraulic connection .................................................................................................... 74
■ General information .................................................................................................. 74
■ Expansion vessels .................................................................................................... 75
Index
2VIESMANN VITODENS 200-W
5822432

■ Multi boiler systems .................................................................................................. 76
■ Max./min. flow rates Vitodens 200-W ....................................................................... 76
4.4 Intended use ................................................................................................................. 76
5. Control units 5.1 Vitotronic 100, type HC1B, for constant temperature operation ................................... 77
■ Structure and functions ............................................................................................. 77
■ Specification Vitotronic 100, type HC1B ................................................................... 78
5.2 Vitotronic 200, type HO1B, for weather-compensated operation ................................. 78
■ Structure and functions ............................................................................................. 78
■ Specification Vitotronic 200, type HO1B ................................................................... 80
5.3 Vitotronic 300-K, type MW2B for multi boiler systems .................................................. 80
■ Cascade control unit for Vitodens 200-W with Vitotronic 100 ................................... 80
■ Structure and function ............................................................................................... 80
■ Specification Vitotronic 300-K ................................................................................... 82
■ Delivered condition Vitotronic 300-K ......................................................................... 83
5.4 Accessories for Vitotronic ............................................................................................. 83
■ Allocation to control unit types .................................................................................. 83
■ Vitotrol 100, type UTA ............................................................................................... 84
■ Vitotrol 100, type UTDB ............................................................................................ 84
■ External H4 extension ............................................................................................... 85
■ Vitotrol 100, type UTDB-RF ...................................................................................... 85
■ Notes regarding room temperature hook-up (RS function) for remote control units . 86
■ Information on the Vitotrol 200-A and Vitotrol 300-A ................................................ 86
■ Vitotrol 200-A ............................................................................................................ 86
■ Vitotrol 300-A ............................................................................................................ 87
■ Information on Vitotrol 200-RF .................................................................................. 87
■ Vitotrol 200-RF .......................................................................................................... 88
■ Wireless base station ................................................................................................ 88
■ Wireless repeater ...................................................................................................... 89
■ Room temperature sensor ........................................................................................ 89
■ Immersion temperature sensor ................................................................................. 89
■ Immersion temperature sensor ................................................................................. 90
■ KM BUS distributor ................................................................................................... 90
■ Mixer extension kit with integral mixer motor ............................................................ 90
■ Mixer extension kit for separate mixer motor ............................................................ 91
■ Vitotronic 300-K extension for heating circuits 2 and 3 with mixer ............................ 91
■ Mixer extension kit in conjunction with Divicon heating circuit distributor ................. 92
■ Extension kit for one heating circuit with mixer for Vitotronic 300-K ......................... 92
■ Immersion thermostat ............................................................................................... 93
■ Contact thermostat .................................................................................................... 93
■ Solar control module, type SM1 ................................................................................ 94
■ Internal H1 extension ................................................................................................ 95
■ Internal H2 extension ................................................................................................ 95
■ AM1 extension .......................................................................................................... 95
■ EA1 extension ........................................................................................................... 96
■ Vitocom 300, type LAN3 ........................................................................................... 96
■ LON connecting cable for data exchange between control units .............................. 98
■ Extension of the connecting cable ............................................................................ 98
■ Terminator (2 pce) ..................................................................................................... 98
■ LON communication module ..................................................................................... 98
■ Vitoconnect 100, type OPTO1 .................................................................................. 99
6. Appendix 6.1 Regulations / Directives ................................................................................................ 99
■ Regulations and directives ........................................................................................ 99
7. Keyword index ............................................................................................................................................ 101
Index (cont.)
VITODENS 200-W VIESMANN 3
5822432

1.1 Product description
Vitodens 200-W, 49 to 60 kW
AInox-Radial heat exchanger made from stainless steel – for high
operational reliability and a long service life. High heating output
on a very small footprint
BModulating MatriX cylinder burner for extremely clean combus-
tion and quiet operation
CVariable speed combustion fan for quiet and economical opera-
tion
DGas and water connections
EDigital boiler control unit
Vitodens 200-W
4VIESMANN VITODENS 200-W
1
5822432

Vitodens 200-W, 80 to 99 kW
AInox-Radial heat exchanger made from stainless steel – for high
operational reliability and a long service life. High heating output
on a very small footprint
BModulating MatriX cylinder burner for extremely clean combus-
tion and quiet operation
CVariable speed combustion fan for quiet and economical opera-
tion
DGas and water connections
EDigital boiler control unit
Vitodens 200-W, 120 to 150 kW
AInox-Radial heat exchanger made from stainless steel – for high
operational reliability and a long service life. High heating output
on a very small footprint.
BModulating MatriX cylinder burner for extremely clean combus-
tion and quiet operation
CVariable speed combustion fan for quiet and economical opera-
tion
DGas and water connections
EDigital boiler control unit
Vitodens 200-W (cont.)
VITODENS 200-W VIESMANN 5
5822432
1

Vitodens 200-W wall mounted condensing boilers up to 150 kW are
especially suitable for installation in apartment buildings and com-
mercial or public buildings. For such cases, the Vitodens 200-W
offers an affordable, space saving solution – either as a single unit
up to 150 kW or as a cascade with up to 6 boilers and a heating out-
put up to 594 kW.
The Inox-Radial heat exchanger made from stainless steel offers
high output on a very small footprint. This enables particularly effi-
cient operation with standard seasonal efficiency [to DIN] of up to
98 % (Hs) [gross cv].
The Vitotronic 300-K cascade control unit regulates up to 6
Vitodens 200-W as a single heating centre. It also automatically
matches the boiler output to the heat demand. This means: Subject
to heat demand, either one boiler modulates or all 6 boilers operate
concurrently.
We offer the complete range of matching system components for
creating cascade systems: control units, fully insulated hydraulic
cascades and flue gas headers.
Recommended applications
High heating output from a compact, user friendly wall mounted
boiler, suitable for the following applications:
■ Systems with few, large-demand consumers, e.g. fan heaters in
supermarkets/shopping centres, workshops and industrial prem-
ises, commercial nurseries, garages and DHW heating systems
■ Systems with several heating circuits for underfloor heating and/or
static heating surfaces in apartment buildings, 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 intermediary
floors or in the attic
Benefits at a glance
■ Optional cascade installation with up to 6 boilers and up to 594 kW
rated heating output
■ Standard seasonal efficiency [to DIN]: Up to 98 % (Hs)
■ Durable and efficient thanks to the Inox-Radial heat exchanger
■ Modulating MatriX cylinder burner with a long service life thanks to
stainless steel MatriX gauze – resistant to high temperature loads
■ Easy to operate Vitotronic control unit with plain text and graphic
display
■ Lambda Pro Control combustion controller for all gas types – sav-
ing fees by extending the inspection interval to 3 years [Germany]
■ Quiet operation thanks to low fan speed
Factory setting
Wall mounted gas condensing boiler with Inox-Radial heat
exchanger, modulating MatriX cylinder burner for natural gas and
LPG to DVGW Code of Practice G260 [Germany], plus wall mount-
ing bracket.
Fully plumbed and wired. White epoxy-coated casing.
Packed separately:
Vitotronic 100 for constant temperature operation
or
Vitotronic 200 for weather-compensated operation.
Preset for operation with natural gas. Conversion within gas groups
E/LL is not required. The conversion to LPG is made at the gas train
(a conversion kit is not required).
Multi boiler systems
Multi boiler systems for open flue operation with 2, 3, 4, 5 or 6 boil-
ers.
Installation in series with a pre-plumbing jig (wall mounted)
Comprising:
■ Cascade module for each boiler with:
– High efficiency circulation pump
– Ball valves
– Drain & fill valve
– Gas shut-off valve
– Safety valve
– Thermal insulation
■ Weather-compensated, digital cascade and heating circuit control
unit Vitotronic 300-K
■ Cascade communication module for each boiler
■ Pre-plumbing jig
Installation in series and in block formation with a mounting
frame
Comprising:
■ Cascade module for each boiler with:
– High efficiency circulation pump
– Ball valves
– Drain & fill valve
– Gas shut-off valve
– Safety valve
– Thermal insulation
■ Weather-compensated, digital cascade and heating circuit control
unit Vitotronic 300-K
■ Cascade communication module for each boiler
■ Mounting frame
Note
Order circulation pumps for heating circuits and cylinder heating sep-
arately.
Tested quality
CE designation according to current EC Directives
ÖVGW Quality Mark for gas and water equipment
Meets the requirements for the "Blue Angel" eco-label RAL UZ 61.
Vitodens 200-W (cont.)
6VIESMANN VITODENS 200-W
1
5822432

1.2 Specification for Vitodens 200-W, 49 and 60 kW
Gas boiler, type B and C, category II2N3P Gas condensing boiler
Rated heating output range when operating with natural gas
Details to EN 15502-1
– TF/TR = 50/30 °C kW 12.0 to 49.0 12.0 to 60.0
– TF/TR = 80/60 °C kW 10.9 to 45.0 10.9 to 55.2
Rated heating output range when operating with LPG P
Details to EN 15502-1
– TF/TR = 50/30 °C kW 17.0 to 49.0 17.0 to 60.0
– TF/TR = 80/60 °C kW 15.5 to 45.0 15.5 to 55.2
Rated heat input
– When operating with natural gas kW 11.2 to 45.7 11.2 to 56.2
– For operation with LPG P kW 16.1 to 45.7 16.1 to 56.2
Type B2HA B2HA
Product ID CE-0085CN0050
IP rating IP X4 to EN 60529
Gas supply pressure
– Natural gas mbar 20 20
kPa 2 2
– LPG mbar 50 50
kPa 5 5
Max. permissible gas supply pressure*1
– Natural gas mbar 25.0 25.0
kPa 2.5 2.5
– LPG mbar 57.5 57.5
kPa 5.75 5.75
Sound power level (to EN ISO 15036-1)
– Partial load dB(A) 39 39
– Rated heating output dB(A) 58 67
Power consumption (delivered condition) W 56 82
Weight kg 65 65
Heat exchanger capacity l 7.0 7.0
Max. flow temperature °C 76 76
Max. flow rate
Limit for the use of hydraulic separation
l/h 3500 3500
Nominal circulation water volume at TF/TR = 80/60 °C l/h 1748 2336
Permiss. operating pressure bar 4 4
MPa 0.4 0.4
Dimensions
– Length mm 380 380
– Width mm 480 480
– Height mm 850 850
Gas connection R ¾ ¾
Supply values (relative to the max. load)
– Natural gas E m3/h 4.84 5.95
– Natural gas LL m3/h 5.62 6.91
– LPG kg/h 3.57 4.39
*1 If the gas supply pressure is higher than the maximum permissible value, install a separate gas pressure governor upstream of the sys-
tem.
Vitodens 200-W (cont.)
VITODENS 200-W VIESMANN 7
5822432
1

Gas boiler, type B and C, category II2N3P Gas condensing boiler
Rated heating output range when operating with natural gas
Details to EN 15502-1
– TF/TR = 50/30 °C kW 12.0 to 49.0 12.0 to 60.0
– TF/TR = 80/60 °C kW 10.9 to 45.0 10.9 to 55.2
Flue gas parameters*2
Flue gas category to G 635/G 636 G52/G51 G52/G51
Temperature (at a return temperature of 30 °C)
– Rated heating output °C 62 66
– Partial load °C 39 39
Temperature (at a return temperature of 60 °C) °C 75 80
Mass flow rate
Natural gas
– Rated heating output kg/h 78 104
– Partial load kg/h 30 30
LPG
– Rated heating output kg/h 74 99
– Partial load kg/h 28 28
Available draught*9 Pa 250 250
mbar 2.5 2.5
Max. amount of condensate
– To DWA-A 251 l/h 6.3 8.4
Condensate connection (hose nozzle) Ø mm 20-24 20-24
Flue gas connection Ø mm 80 80
Ventilation air connection Ø mm 125 125
Standard seasonal efficiency [to DIN] at
– TF/TR = 40/30 °C % Up to 98 (Hs [gross cv])
Energy efficiency class A A
Multi boiler systems
For further details regarding multi boiler systems, see page 57.
*2 Calculation values for sizing the flue system to EN 13384.
Flue gas temperatures as actual 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 permissi-
ble operating temperatures.
*9 CH: Available draught 200 Pa; 2.0 mbar
Vitodens 200-W (cont.)
8VIESMANN VITODENS 200-W
1
5822432

With heating circuit connection set with low loss header
380
40 752
875 H
E
G
200
F
C
A
B
1022
1126
1313
133
850
1975 1690 LK
E
420
480 160
900
1021
1085
O
M
2121 K1836 L
N
/ /
P
D
AHeating flow G 1½ (male thread) (connection possible to the left
or to the right)
BHeating return G 1½ (male thread) (connection possible to the
left or to the right)
CExpansion vessel connection G 1 (male thread)
DHeating circuit connection set with integral low loss header,
shown without thermal insulation (standard delivery)
ECondensate drain
FGas connection Rp ¾
GCable entry area at the back
HWithout connection sets
KRecommended dimension for a single boiler system
LRecommended dimension for a multi boiler system
MWith connection sets
NBalanced flue bend (accessories)
OSafety valve
(PL/IT: Without safety valve)
PTop edge, finished floor
Note
■ The heating circuit connection set must be ordered separately.
■ Lay all required supply cables on site and route them into the
boiler in the specified area.
Low loss header operating principle
The low loss header integral to the heating circuit connection set
should be sized for the max. flow rate that may occur in the overall
system.
When balancing the low loss header, adjust the flow rate on the
boiler side (V primary A) to approx. 10 to 30 % below the flow rate
on the system side (V secondary B) (reducing the return tempera-
ture).
Vitodens 200-W (cont.)
VITODENS 200-W VIESMANN 9
5822432
1

The low loss header separates the heat generator circuit (boiler cir-
cuit) from the subsequent heating circuits.
A
B
130%
130%
100% 100%
AV primary
BV secondary
High efficiency circulation pump in the heating circuit connec-
tion set
The highly efficient circulation pump uses significantly less power
compared to conventional pumps.
Matching the pump rate of the circulation pump to the individual sys-
tem conditions reduces the power consumption of the heating sys-
tem.
Circulation pump VI PARA 25/1-11
Rated voltage V~ 230
Power consumption
– max. W 140
– min. W 8
Adjust the functioning of the primary side circulation pump during commissioning
Hydraulic connection/connection requirements Control unit setting
Coding address/group
Circulation pump setting
Single boiler system
Connection of heating circuits with connection set with inte-
gral low loss header
Circulation pump VI PARA 25/1-11
30:0/boiler/2
Ext. In
2
6
1212
2
6
Recommended for Δt = 15 K
–49 kW: = 3 ≙ 2.87 m3/h
Recommended for Δt = 17 K
–60 kW: = 4 ≙ 3.37 m3/h
Pressure drop on the heating water side
For sizing a cylinder loading pump (on site).
DHW cylinder connection set for connecting the DHW cylinder
upstream of the low loss header, see accessories.
0 500 1000 1500
0
100
200
300
400
500
600
Pressure drop
0
10
20
30
40
50
60
kPa
2000 2500 3000 3500
Flow rate in l/h
mbar
Vitodens 200-W (cont.)
10 VIESMANN VITODENS 200-W
1
5822432

Note
When the heating circuit pump and circulation pump for cylinder
heating are operated in parallel mode (no DHW priority control), we
recommend the installation of a DHW cylinder in the secondary side
of the heating system.
With heating circuit connection set for combination with system separation or heating water buffer cylinder
380
40 752
875 H
G
200
D
100
850
1975 1690 LK
M
480 160
900
1021
1085
2121 K1836 L
N
/ /
O
1010
160 160
955
1040
A
BE
CF
AExpansion vessel connection G 1 (male thread)
BHeating flow G 1½ (male thread)
CSafety valve
DGas connection Rp ¾
EHeating return G 1½ (male thread)
FHeating circuit connection set
GCable entry area at the back
HWithout connection sets
KRecommended dimension for a single boiler system
LRecommended dimension for a multi boiler system
MCondensate drain
NBalanced flue bend (accessories)
OTop edge, finished floor
Vitodens 200-W (cont.)
VITODENS 200-W VIESMANN 11
5822432
1

Note
■ The heating circuit connection set must be ordered separately.
■ Lay all required supply cables on site and route them into the
boiler in the specified area.
Pressure drop on the heating water side
For sizing a circulation pump (accessories or on-site provision).
0 500 1000 1500
0
100
200
300
400
500
600
Pressure drop
0
10
20
30
40
50
60
kPa
2000 2500 3000 3500
Flow rate in l/h
mbar
Note
When the heating circuit pump and circulation pump for cylinder
heating are operated in parallel mode (no DHW priority control), we
recommend the installation of a DHW cylinder in the secondary side
of the heating system.
Vitodens 200-W (cont.)
12 VIESMANN VITODENS 200-W
1
5822432

1.3 Specification for Vitodens 200-W, 80 and 99 kW
Gas boiler, type B and C, category II2N3P Gas condensing system boiler
Rated heating output range when operating with natural gas
80.0/99.0 kW Details to EN 15417
– TV/TR = 50/30 °C kW 20.0 to 80.0 20.0 to 99.0
– TV/TR = 80/60 °C kW 18.2 to 74.1 18.2 to 90.9
Rated heating output range when operating with LPG P
69.0 kW Details to EN 15502-1
80.0/99.0 kW Details to EN 15417
–TV/TR = 50/30 °C kW 30.0 to 80.0 30.0 to 99.0
–TV/TR = 80/60 °C kW 27.3 to 74.1 27.3 to 90.9
Rated heat input
– When operating with natural gas kW 18.8 to 75.0 18.8 to 92.9
– For operation with LPG P kW 28.1 to 75.0 28.1 to 92.9
Type B2HA B2HA
Product ID CE-0085CN0050
IP rating IP X4 to EN 60529
Gas supply pressure
– Natural gas mbar 20 20
kPa 2 2
– LPG mbar 50 50
kPa 5 5
Max. permissible gas supply pressure*4
– Natural gas mbar 25.0 25.0
kPa 2.5 2.5
– LPG mbar 57.5 57.5
kPa 5.75 5.75
Sound power level (to EN ISO 15036-1)
– Partial load dB(A) 38 38
– Rated heating output dB(A) 56 59
Power consumption (delivered condition) W 126 175
Weight kg 83 83
Heat exchanger capacity l 12.8 12.8
Max. flow temperature °C 76 76
Max. flow rate
Limit for the use of hydraulic separation
l/h 5700 5700
Nominal circulation water volume at TF/TR = 80/60 °C l/h 3118 3909
Permiss. operating pressure bar 4 4
MPa 0.4 0.4
Dimensions
– Length mm 530 530
– Width mm 480 480
– Height mm 850 850
Gas connection R 1 1
Supply values (relative to the max. load)
– Natural gas E m3/h 7.94 9.83
– Natural gas LL m3/h 9.23 11.43
– LPG kg/h 5.86 7.26
*4 If the gas supply pressure is higher than the maximum permissible value, install a separate gas pressure governor upstream of the sys-
tem.
Vitodens 200-W (cont.)
VITODENS 200-W VIESMANN 13
5822432
1

Gas boiler, type B and C, category II2N3P Gas condensing system boiler
Rated heating output range when operating with natural gas
80.0/99.0 kW Details to EN 15417
– TV/TR = 50/30 °C kW 20.0 to 80.0 20.0 to 99.0
– TV/TR = 80/60 °C kW 18.2 to 74.1 18.2 to 90.9
Flue gas parameters*5
Flue gas category to G 635/G 636 G52/G51 G52/G51
Temperature (at a return temperature of 30 °C)
– Rated heating output °C 46 57
– Partial load °C 37 37
Temperature (at a return temperature of 60 °C) °C 68 72
Mass flow rate
Natural gas
– Rated heating output kg/h 139 174
– Partial load kg/h 52 52
LPG
– Rated heating output kg/h 132 165
– Partial load kg/h 49 49
Available draught*9 Pa 250 250
mbar 2.5 2.5
Max. amount of condensate
– To DWA-A 251 l/h 11.2 14.0
Condensate connection (hose nozzle) Ø mm 20-24 20-24
Flue gas connection Ø mm 100 100
Ventilation air connection Ø mm 150 150
Standard seasonal efficiency [to DIN] at
– TF/TR = 40/30 °C % Up to 98 (Hs [gross cv])
Energy efficiency class – –
Multi boiler systems
For further details regarding multi boiler systems, see page 57.
*5 Calculation values for sizing the flue system to EN 13384.
Flue gas temperatures as actual 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 permissi-
ble operating temperatures.
*9 CH: Available draught 200 Pa; 2.0 mbar
Vitodens 200-W (cont.)
14 VIESMANN VITODENS 200-W
1
5822432

With heating circuit connection set with low loss header
480 236
530
40 752
875 H
G
200
F
C
A
B
E
1022
1162
1313
133
850
1975 1690 LK
E
O
975
1150
1232
420
2206 1921 LK
M
D
P
N
AHeating flow G 1½ (male thread) (connection possible to the left
or to the right)
BHeating return G 1½ (male thread) (connection possible to the
left or to the right)
CExpansion vessel connection G 1 (male thread)
DHeating circuit connection set with integral low loss header,
shown without thermal insulation (standard delivery)
ECondensate drain
FGas connection Rp 1
GCable entry area at the back
HWithout connection sets
KRecommended dimension for a single boiler system
LRecommended dimension for a multi boiler system
MWith connection sets
NBalanced flue bend (accessories)
OSafety valve
(PL/IT: Without safety valve)
PTop edge, finished floor
Note
■ The heating circuit connection set must be ordered separately.
■ Lay all required supply cables on site and route them into the
boiler in the specified area.
Low loss header operating principle
The low loss header integral to the heating circuit connection set
should be sized for the max. flow rate that may occur in the overall
system.
Vitodens 200-W (cont.)
VITODENS 200-W VIESMANN 15
5822432
1

When balancing the low loss header, adjust the flow rate on the
boiler side (V primary A) to approx. 10 to 30 % below the flow rate
on the system side (V secondary B) (reducing the return tempera-
ture).
The low loss header separates the heat generator circuit (boiler cir-
cuit) from the subsequent heating circuits.
A
B
130%
130%
100% 100%
AV primary
BV secondary
High efficiency circulation pump in the heating circuit connec-
tion set (accessories)
The highly efficient circulation pump uses significantly less power
compared to conventional pumps.
Matching the pump rate of the circulation pump to the individual sys-
tem conditions reduces the power consumption of the heating sys-
tem.
Circulation pump VI PARA 25/1-11
Rated voltage V~ 230
Power consumption
– max. W 140
– min. W 8
Adjust the functioning of the primary side circulation pump during commissioning
Hydraulic connection/connection requirements Control unit setting
Coding address/group
Circulation pump setting
Single boiler system
Connection of heating circuits with connection set with inte-
gral low loss header
Circulation pump VI PARA 25/1-11
30:0/boiler/2
Ext. In
2
6
1212
2
6
Recommendation
–80 kW (Δt = 16 K): = 6
≙ 4.03 m3/h
–99 kW (Δt = 20 K): = 6
≙ 4.02 m3/h
Pressure drop on the heating water side
For sizing a cylinder loading pump (on site)
Vitodens 200-W (cont.)
16 VIESMANN VITODENS 200-W
1
5822432

0 1000 2000 3000
0
100
200
300
400
500
600
Pressure drop
0
10
20
30
40
50
60
kPa
4000 5000 6000 7000
Flow rate in l/h
mbar
Note
When the heating circuit pump and circulation pump for cylinder
heating are operated in parallel mode (no DHW priority control), we
recommend the installation of a DHW cylinder in the secondary side
of the heating system.
Vitodens 200-W (cont.)
VITODENS 200-W VIESMANN 17
5822432
1

With heating circuit connection set for combination with system separation or heating water buffer cylinder
100
855
530
N
40
160 160
200
752
1975 1690
480
875
1300
H
M
L
F
K
236
E
975
O
A
BD
G
C
2206
1150
L
K1921
/
/
1040
1232
ASafety valve
BConnection for expansion vessel G 1 (male thread)
CBoiler flow G 1½ (male thread)
DGas connection Rp 1
EBoiler return G 1½ (male thread)
FCable entry area at the back
GConnection sets (accessories)
HWithout connection set (accessories)
KRecommended dimension (single boiler system)
LRecommended dimension (multi boiler system)
MWith connection set (accessories)
NCondensate drain
OTop edge, finished floor
Note
■ The heating circuit connection set must be ordered separately.
■ Lay all required supply cables on site and route them into the
boiler in the specified area.
Variable speed high efficiency circulation pump in the heating circuit connection set (accessories)
The highly efficient circulation pump uses significantly less power
compared to conventional pumps.
Matching the pump rate of the circulation pump to the individual sys-
tem conditions reduces the power consumption of the heating sys-
tem.
Circulation pump VI PARA 25/1-12
Rated voltage V~ 230
Power consumption
– max. W 310
– min. W 16
Vitodens 200-W (cont.)
18 VIESMANN VITODENS 200-W
1
5822432

Residual head of the circulation pump
100
00 1000
Flow rate in l/h
200
600
800
1000
300
400
500
700
900
2000 3000 4000
10
0
20
60
80
100
30
40
50
70
90
kPa
5000 6000
1100 110
1200 120
A
B
C
D
E
F
G
Residual head
mbar
Curve Pump rate, circulation pump
A40 %
B50 %
C60 %
D70 %
E80 %
F90 %
G100 %
Adjust the functioning of the circulation pump during commissioning
Hydraulic connection/connection requirements Control unit setting
Coding address/group
Circulation pump setting
Single boiler system with:
– Heating circuit without mixer
– Connection without low loss header and without heating
water buffer cylinder
– Circulation pump VI PARA 25/1-12
– Max. pump speed:
E6: ... /heating circuit
– Min. pump speed:
E7: ... /heating circuit
Ext. In
Ext. In
2
6
1212
2
6
Single boiler system with connection of the heating circuits
to the heating water buffer cylinder
Circulation pump VI PARA 25/1-12
30:0/boiler/2
Ext. In
2
6
1212
2
6
Recommended for Δt = 15 K
–80 kW: = 6 ≙ 4.59 m3/h
–99 kW: = 10 ≙ 5.70 m3/h
Multi boiler system
Circulation pump VI PARA 25/1-11
30:0/boiler/2
Ext. In
2
6
1212
2
6
Recommended for Δt = 20 K
–80 kW: = 4 ≙ 3.43 m3/h
–99 kW: = 6 ≙ 4.25 m3/h
Multi stage circulation pump (on site) 30:0/boiler/2
Vitodens 200-W (cont.)
VITODENS 200-W VIESMANN 19
5822432
1

Note
If the residual head of the circulation pump available as an acces-
sory is insufficient to overcome the following system pressure drop
values, install an additional, external circulation pump on site. In this
case, either the heating circuit connection with integral low loss
header, a system separation or a heating water buffer cylinder must
be used.
Pressure drop on the heating water side
For sizing a circulation pump (accessories or on-site provision)
0 1000 2000 3000
0
100
200
300
400
500
600
Pressure drop
0
10
20
30
40
50
60
kPa
4000 5000 6000 7000
Flow rate in l/h
mbar
Note
When the heating circuit pump and circulation pump for cylinder
heating are operated in parallel mode (no DHW priority control), we
recommend the installation of a DHW cylinder in the secondary side
(downstream of the system separation or the heating water buffer
cylinder) of the heating system.
Vitodens 200-W (cont.)
20 VIESMANN VITODENS 200-W
1
5822432