Viessmann Vitodens 200-W WB2C Technical Manual

VIESMANN VITODENS 200-W

Gas condensing boiler

17.0 to 105.0 kW

as a multi-boiler system up to 420.0 kW

VITODENS 200-W Type WB2C

Wall mounted gas condensing boiler,

with modulating MatriX cylinder burner for natural gas and LPG

for open or balanced flue operation

5822 432 GB 5/2010

Technical guide

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 .............................................................................. 10

2. Installation accessories 2.1 Product description ....................................................................................................... 13

■ Installation accessories for the Vitodens 200-W, 45 and 60 kW ............................... 13

■ Installation accessories for the Vitodens 200-W, 80 and 105 kW ............................. 23

■ Installation accessories for multi-boiler systems ....................................................... 24

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

4. Design information 4.1 Positioning, installation ................................................................................................. 25

■ Installation conditions for open flue operation (appliance type B) ............................. 25

■ Installation conditions for balanced flue operation (appliance type C) ...................... 25

■ Operation of the Vitodens in wet areas ..................................................................... 26

■ Electrical connection ................................................................................................. 26

■ Gas connection ......................................................................................................... 27

■ Minimum clearances ................................................................................................. 27

■ Pre-installation for installing the Vitodens 200-W directly onto a wall ....................... 28

■ Pre-installation, multi-boiler system .......................................................................... 28

4.2 Condensate connection ................................................................................................ 33

■ Condensate drain and neutralisation ........................................................................ 33

4.3 Hydraulic connection .................................................................................................... 35

■ General ..................................................................................................................... 35

■ Expansion vessels .................................................................................................... 35

■ Low loss header ........................................................................................................ 35

5. Control units 5.1 Vitotronic 100, type HC1A, for constant temperature operation ................................... 37

■ Structure and functions ............................................................................................. 37

■ Specification Vitotronic 100, type HC1A ................................................................... 37

5.2 Vitotronic 200, type HO1A, for weather-compensated operation ................................. 38

■ Specification Vitotronic 200, type HO1A ................................................................... 40

5.3 Vitotronic 300-K, type MW2 for multi-boiler systems .................................................... 40

■ Cascade control unit for the Vitodens 200-W with a Vitotronic 100 .......................... 40

■ Construction and function ......................................................................................... 40

■ Specification, Vitotronic 300-K .................................................................................. 42

■ Delivered condition Vitotronic 300-K ......................................................................... 42

Index

2VIESMANN VITODENS 200-W

5822 432 GB

5.4 Accessories for the Vitotronic ....................................................................................... 43

■ Allocation to control unit types .................................................................................. 43

■ Vitotrol 100, type UTA ............................................................................................... 43

■ Vitotrol 100, type UTDB ............................................................................................ 44

■ External extension H4 ............................................................................................... 44

■ Vitotrol 100, type UTDB-RF ...................................................................................... 45

■ Notes regarding room temperature hook-up (RS function) for remote control units . 45

■ Information regarding the Vitotrol 200A and 300A .................................................... 45

■ Vitotrol 200A ............................................................................................................. 45

■ Vitotrol 300A ............................................................................................................. 46

■ Room temperature sensor ........................................................................................ 47

■ Vitotrol 200 ................................................................................................................ 47

■ Vitotrol 300 ................................................................................................................ 48

■ Room temperature sensor ........................................................................................ 48

■ Mounting base for programming unit ........................................................................ 49

■ Radio clock receiver .................................................................................................. 49

■ Function extension 0-10 V ........................................................................................ 49

■ Vitocom 100, type GSM ............................................................................................ 49

■ Extension kit for one heating circuit with mixer with integral mixer motor ................. 50

■ Extension kit for one heating circuit with mixer for separate mixer motor ................. 51

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

circuit distributor ........................................................................................................ 51

■ Extension kit for one heating circuit with mixer for the Vitotronic 300-K ................... 52

■ Immersion thermostat ............................................................................................... 52

■ Contact thermostat .................................................................................................... 53

■ Immersion temperature sensor ................................................................................. 53

■ Solar control module, type SM1 ................................................................................ 53

■ Temperature sensor (DHW cylinder/heating water buffer cylinder/combi cylinder) .. 54

■ LON communication module ..................................................................................... 54

■ LON connecting cable for data exchange between control units .............................. 54

■ Extension of the connecting cable ............................................................................ 55

■ Terminator (2 pce.) ................................................................................................... 55

■ KM BUS distributor ................................................................................................... 55

■ Internal extension H1 ................................................................................................ 56

■ Internal extension H2 ................................................................................................ 56

■ Extension AM1 .......................................................................................................... 56

■ Extension EA1 .......................................................................................................... 57

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

■ Regulations and Directives ....................................................................................... 57

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

Index (cont.)

VITODENS 200-W VIESMANN 3

5822 432 GB

1.1 Product description

AInox-Radial heat exchanger made from stainless steel - for high

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

smallest of spaces

BModulating MatriX cylinder burner for extremely clean combustion

and quiet operation

CVariable speed combustion fan for quiet and economical opera-

tion

DGas and water connections

EDigital boiler control unit

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

especially suitable for installation in apartment buildings and commer-

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

able, space-saving solution – either as a single unit up to 105 kW 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 oper-

ation with standard efficiency up to 98 % (Hs)/109 % (Hi).

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 auto-

matically matched to the heat demand. This means subject to the pre-

vailing 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 insu-

lated 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, nurser-

ies, garages and DHW heating systems

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

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

raced houses, office buildings and administration premises - partic-

ularly 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.

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)

■ Standard seasonal efficiency [to DIN]: up to 98 % (Hs)/109 % (Hi)

■ Durable and efficient through the Inox-Radial heat exchanger

■ Modulating MatriX cylinder burner with a long service life thanks to

stainless steel MatriX mesh – resistant to high temperature loads

■ New Vitotronic control unit that is easy to operate with plain text and

graphic display

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

wall mounting base (accessory)

■ Lambda Pro Control combustion controller for all gas types – saving

fees by extending the inspection intervals to up to five years [in Ger-

many]

■ Quiet operation through low fan speed

Delivered condition

Wall mounted gas condensing boiler with Inox-Radial heat exchanger,

modulating MatriX cylinder burner for natural gas and LPG to DVGW

Code of Practice G260 [Germany], plus wall mounting bracket.

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.

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

E/LL is not required. The conversion to LPG is made at the gas valve

(a conversion kit is 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

■ Connection set for every boiler with:

– Interconnecting pipes formed to suit

– Circulation pump (3-stage)

– Ball valves

– Drain & fill valve

– Check valve

– Gas shut-off valve

– Safety valve

Vitodens 200-W

4VIESMANN VITODENS 200-W

1

5822 432 GB

■ 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:

■ Hydraulic cascade with low loss header

■ Connection set for every boiler with:

– Interconnecting pipes formed to suit

– Circulation pump (3-stage)

– Ball valves

– Drain & fill 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

■ Mounting frame

– Ceiling mounting

Note

Order circulation pumps for heating circuits and cylinder heating sep-

arately.

Approved quality

CE designation according to current EC Directives

Qualitätsmarke der ÖVGW gem. Gütezeichenverordnung

1942 DRGBl. I für Erzeugnisse des Gas- und Wasserfachs

Meets the requirements for the "Blue Angel" certificate of environmen-

tal excellence to RAL UZ 61.

Vitodens 200-W (cont.)

VITODENS 200-W VIESMANN 5

5822 432 GB

1

1.2 Specification

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

Gas condensing boiler

Rated output range

45 and 60 kW: Specification to EN 677.

80 and 105 kW: Specification to EN 15417.

TV/TR = 50/30 °C kW 17.0-45.0 17.0-60.0 30.0-80.0 30.0-105.0

TV/TR = 80/60 °C kW 15.4-40.7 15.4-54.4 27.0-72.6 27.0-95.6

Rated heat input kW 16.1-42.2 16.1-56.2 28.1-75.0 28.1-98.5

Type WB2C WB2C WB2C WB2C

Product ID CE-0085BR0432

IP rating IP X4D to EN 60529

Gas supply pressure

Natural gas mbar 20 20 20 20

LPG mbar 50 50 50 50

Max. permissible gas supply pressure*1

Natural gas mbar 25.0 25.0 25.0 25.0

LPG mbar 57.5 57.5 57.5 57.5

Power consumption (in the delivered condition) W 56 82 90 175

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 m3/h 4.47 5.95 7.94 10.42

Natural gas LL m3/h 5.19 6.91 9.23 12.12

LPG kg/h 3.30 4.39 5.88 7.74

Flue gas parameters*2

Flue gas value group to G 635/G 636 G52/G51 G52/G51 G52/G51 G52/G51

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 78.2 106.7 143.8 185.4

– at partial load kg/h 26.6 26.6 46.4 46.4

Available draught Pa 250 250 250 250

mbar 2.5 2.5 2.5 2.5

Standard seasonal efficiency [to DIN] at

TV/TR = 40/30 °C % up to 98 (Hs)/109 (Hi)

Average condensate volume

with natural gas and TV/TR = 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.

Vitodens 200-W (cont.)

6VIESMANN VITODENS 200-W

1

5822 432 GB

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

Gas condensing boiler

Rated output range

45 and 60 kW: Specification to EN 677.

80 and 105 kW: Specification to EN 15417.

TV/TR = 50/30 °C kW 17.0-45.0 17.0-60.0 30.0-80.0 30.0-105.0

TV/TR = 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

Multi-boiler systems

For further details regarding multi-boiler systems, see page 28.

40

100

200

752

1975

1700

850

380

875

1166

176

GCB D F

E

A

L

M

O

H

R

K

N

240

305

400

B

902

982

S

80

160

480

P

AExpansion vessel connection G 1

BSafety valve

CHeating flow G 1½

DCylinder flow G 1½

EGas connection R ¾

FCylinder return G 1½

GHeating return G 1½

HCable entry area at the back

KConnection sets (accessory)

Shown without thermal insulation (standard delivery, connection

sets)

LWithout connection sets

MWith connection sets

NRecommended dimension for a single boiler system

Vitodens 200-W (cont.)

VITODENS 200-W VIESMANN 7

5822 432 GB

1

ORecommended dimension for a multi-boiler system

PFlue gas/ventilation air connection with bend (accessory)

RCondensate drain

STop edge finished floor

Note

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

at the point indicated (see page 26).

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

This circulation pump is a highly efficient DC pump with more than

50 % less power consumption than conventional pumps.

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

conditions reduces the power consumption of the heating system.

Circulation pump VI Para 25/1-7

Rated voltage V~ 230

Power consumption W max. 70

min. 5

Variable speed (Δp constant or Δp variable), fully wired, ready to plug

in.

Residual head of the circulation pump

0

0 1000

Flow rate in l/h

2000

Residual head in mbar

100

200

300

400

500

600

700

3000

Max.

10

0

20

60

30

40

50

70

kPa

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

Circulation pump VIRS 25/7-3

Rated voltage V~ 230

Rated current A max. 0.58

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.

Vitodens 200-W (cont.)

8VIESMANN VITODENS 200-W

1

5822 432 GB

Residual head of the circulation pump

ABC

0

0 200 400 600 800 1000

Flow rate in l/h

1200 1400 1600 1800 2000 2200 2400 2600

Residual head in mbar

0

kPa

100

10

200

20

300

30

400

40

500

50

600

60

700

70

AStage 1

BStage 2

CStage 3

Pressure drop (primary circuit)

For sizing an on-site circulation pump

0 500 1000 1500

0

100

200

300

400

500

600

Pressure drop in mbar

0

10

20

30

40

50

60

kPa

2000 2500 3000 3500

Flow rate in l/h

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

Vitodens 200-W (cont.)

VITODENS 200-W VIESMANN 9

5822 432 GB

1

Residual head of the circulation pump

0 0,5 1 1,5

0

100

200

300

400

500

600

Head in mbar

0

10

20

30

40

50

60

kPa

2 2,5 3 3,5

Pump rate in m³/h

A B C

AStage 1

BStage 2

CStage 3

Vitodens 200-W, 80 and 105 kW

Multi-boiler systems

For further details regarding multi-boiler systems, see page 28.

100

850

530

P

40

160 160

200

752

1975

1700

480

875

1300

E

L

M

O

CG

K

H

N

236

A

B

D F

ASafety valve

BExpansion vessel connection G 1

CBoiler flow 7 42 mm

DCylinder flow 7 35 mm

EGas connection R 1

FCylinder return 7 35 mm

GBoiler return 7 42 mm

HConnection sets (accessory)

Shown without thermal insulation (standard delivery, connection

sets)

Vitodens 200-W (cont.)

10 VIESMANN VITODENS 200-W

1

5822 432 GB

KCable entry area at the back

LWithout connection set (accessories)

MWith connection set (accessories)

NRecommended dimension (single boiler system)

ORecommended dimension (multi-boiler system)

PCondensate drain

Note

The heating circuit connection set must be ordered separately.

Note

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

at the point indicated (see page 26).

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

This circulation pump is a highly efficient DC pump with more than

50 % less power consumption than conventional pumps.

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

conditions reduces the power consumption of the heating system.

Circulation pump VI Para 25/1-11

Rated voltage V~ 230

Power consumption W max. 140

min. 7

Variable speed (Δp constant or Δp variable), fully wired, ready to plug

in.

Residual head of the circulation pump

100

Residual head in mbar

00 1000

Flow rate in l/h

200

600

800

1000

300

400

500

700

900

2000 3000 4000

Max.

10

0

20

60

80

100

30

40

50

70

90

kPa

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

Circulation pump VI UPS 25-100

Rated voltage V~ 230

Power consumption W Stage 1 280

Stage 2 340

Stage 3 345

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

Vitodens 200-W (cont.)

VITODENS 200-W VIESMANN 11

5822 432 GB

1

Residual head of the circulation pump

100

Residual head in mbar

00 1000

Flow rate in l/h

200

600

800

1000

300

400

500

700

900

1100

1200

2000 3000 4000 50005000 6000

ABC

10

0

20

60

80

100

30

40

50

70

90

110

120

kPa

AStage 1

BStage 2

CStage 3

Note

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

page 35).

If the residual head of the circulation pumps (available as accessories)

is insufficient to overcome the following system pressure drop values,

install an additional, external circulation pump on site.

In such cases, use a low loss header.

Pressure drop (primary circuit)

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

from connection set)

0 1000 2000 3000

0

100

200

300

400

500

600

Pressure drop in mbar

0

10

20

30

40

50

60

kPa

4000 5000 6000 7000

Flow rate in l/h

Vitodens 200-W (cont.)

12 VIESMANN VITODENS 200-W

1

5822 432 GB

2.1 Product description

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

Heating circuit connection set without circulation pump

Part no. 7245 738

Connections G 1½

Comprising:

■ Tee with ball valve

■ Boiler drain & fill 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 high efficiency

DC pump

Part no. 7424 757

Connections G 1½

Comprising:

■ Circulation pump

■ 2 tees with ball valve

■ Non-return valve

■ 2 boiler drain & fill valves

■ Safety valve

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

■ Thermal insulation

■ Connection G 1 for expansion vessel

Heating circuit connection set with 3-stage circulation pump

Part no. 7247 341

Connections G 1½

Comprising:

■ Circulation pump

■ 2 tees with ball valve

■ Non-return valve

■ 2 boiler drain & fill valves

■ Safety valve

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

■ Thermal insulation

■ Connection G 1 for expansion vessel

Connection set for DHW cylinders

Part no. Z006 183

Connections G 1½

Comprising:

■ Circulation pump

■ 2 ball shut-off valves

■ Non-return valve

■ Cylinder temperature sensor

Ball valve

Part no. 7247 373

1 pce. G 1¼ with gasket and union nut.

Installation accessories

VITODENS 200-W VIESMANN 13

5822 432 GB

2

Divicon heating circuit distributor

Construction and function

■ Available with R ¾ , R 1 and R 1¼ connections.

■ With heating circuit pump, check valve, ball valves with integral ther-

mometers and 3-way mixer or without mixer.

■ Quick and simple installation through pre-assembled unit and com-

pact design.

■ Low radiation losses through all-round thermal insulation shells.

■ Low electricity costs and precise control characteristics through the

use of high efficiency pumps and optimised mixer curve.

■ Also available with staged pumps.

■ The bypass valve for hydraulic balancing of the heating system is

available as an accessory as a threaded component for inserting into

the prepared hole in the cast body.

■ The overflow valve may be required when using staged pumps to

prevent the heating system running noisily. It is mounted onto the

Divicon.

■ Individually wall mounted or with a double or triple manifold.

■ Also available as kit. For further details, see the Viessmann pricelist.

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

The dimensions of the heating circuit distributor are the same, with or without mixer.

E

151

398

A

B

C

D

G 1½

98

120

HV HR

a

b

HV HRHV HR

Divicon with mixer (wall mounting without thermal insulation and with-

out mixer drive extension set)

HR Heating return

HV Heating flow

AOverflow valve (accessory for multi-stage circulation pump)

BBall valves with thermometer (as programming unit)

CCirculation pump

DBypass valve (accessory)

EThree-way mixer

Heating circuit connec-

tion

R ¾ 1 1¼

Flow rate (max.) m3/h 1.0 1.5 2.5

a (female) Rp ¾ 1 1¼

a (male) G 1¼ 1½ 2

b (female) Rp ¼ 1 1¼

b (male) G 1¼ 1¼ 2

Installation accessories (cont.)

14 VIESMANN VITODENS 200-W

2

5822 432 GB

142

398

A

B

C

HV HR

98

120

D

G 1½

a

b

HV HR

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

tion)

HR Heating return

HV Heating flow

AOverflow valve (accessory for multi-stage circulation pump)

BBall valves with thermometer (as programming unit)

CCirculation pump

DBall valve

Heating circuit connec-

tion

R ¾ 1 1¼

Flow rate (max.) m3/h 1.0 1.5 2.5

a (female) Rp ¾ 1 1¼

a (male) G 1¼ 1½ 2

b (female) Rp ¼ 1 1¼

b (male) G 1¼ 1¼ 2

Installation example: Divicon with triple manifold

HV HR

120 120 120

b

a

d

c

180 180

HV HR

(shown without thermal insulation)

HR Heating return

HV Heating flow

Dimensions Manifold with heating circuit connection

R ¾ and R 1 R 1¼

a 135 183

b 535 583

c 784 784

d G 1¼ G 2

Installation accessories (cont.)

VITODENS 200-W VIESMANN 15

5822 432 GB

2

Determining the required internal diameter

A

ΔT= 15K

ΔT= 20K

ΔT= 30K

ΔT= 5K

ΔT= 10K

C

B

D

2.5

Mixer control characteristics

2.0

0.1

0.2

0.5

1.0

1.5

5.0

Flow rate in m³/h

10 20 30 40531 0.1

0.2

0.5

1.0

1.5

2.0

5.0

Heating circuit output

in kW

ADivicon with three-way mixer

The identified operating ranges B to D provide optimum control

characteristics with the Divicon mixer:

BDivicon with three-way mixer (R ¾)

Application range: 0 to 1.0 m 3/h

CDivicon with three-way mixer (R 1)

Application range: 0 to 1.5 m 3/h

DDivicon with three-way mixer (R 1¼)

Application range: 0 to 2.5 m 3/h

Example:

Heating circuit for radiators with an output of ² = 11.6 kW

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

c Specific heat capacity

µMass flow rate

²Output

´Flow rate

² = µ · c · ΔT c = 1.163 Wh

kg · K µ

²

c · ΔT =

kg

h

´ = 11600 W · kg · K

1.163 Wh · (75-60) K = 665 m³

h

0.665

´ (1 kg ≈ 1 dm³)

Select the smallest possible mixer within the application range with

value ´.

Result of this example: Divicon with three-way mixer (R ¾)

Bypass valve

Part no. 7464 889

To hydraulically balance the heating circuit with mixer. Inserted into

the Divicon.

Overflow valve

Part no. 7429 738: R ¾

Part no. 7429 739: R 1

Part no. 7429 740: R 1¼

Only with manually controlled heating circuit pump. Fitted onto the

Divicon.

Installation accessories (cont.)

16 VIESMANN VITODENS 200-W

2

5822 432 GB

Manifold

Incl. thermal insulation

Wall mounted with wall mounting bracket to be ordered separately.

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

For 2 Divicon

Part no. 7460 638 for Divicon R ¾ and R 1

HV HR HV HR

120

495

HV HR

120

135

120

A

180

G 1½ Rp ¾

AConnection option for expansion vessel

HV Heating water flow

HR Heating water return

Part no. 7466 337 for Divicon R 1¼

HV HR HV HR

120

495

HV HR

420

183

120

A

180

G 2

Rp ¾

G 2

AConnection option for expansion vessel

HV Heating water flow

HR Heating water return

Pressure drop

0

0 0.5 1 1.5 2

Flow rate in m³/h

0.5

1

1.5

2

3

2.5

3.5

2.5

Pressure

drop

kPa

A B

AManifold for Divicon R ¾ and R 1

BManifold for Divicon R 1¼

Installation accessories (cont.)

VITODENS 200-W VIESMANN 17

5822 432 GB

2

For 3 Divicon

Part no. 7460 643 for Divicon R ¾ and R 1

120

HV HR HV HR HV HR

120 120

784

HV HR

135

A

180 180

120

G 1½ Rp ¾

AConnection option for expansion vessel

HV Heating water flow

HR Heating water return

Part no. 7466 340 for Divicon R 1¼

120

HV HR HV HR HV HR

120 120

784

HV HR

183

A

180 180

420

G 2 Rp ¾

G 2

AConnection option for expansion vessel

HV Heating water flow

HR Heating water return

Pressure drop

0

0 0.5 1 1.5 2

Flow rate in m³/h

0.5

1

1.5

2

3

2.5

3.5

2.5

Pressure

drop

kPa

4

4.5

5

4.5

5.5

A B

AManifold for Divicon R ¾ and R 1

BManifold for Divicon R 1¼

Wall mounting bracket

Part no. 7465 894

for individual Divicon

With screws and dowels.

a

for Divicon with mixer without mixer

a mm 151 142

Part no. 7465 439

for manifold

With screws and dowels.

a

for Divicon R ¾ and R 1 R 1¼

a mm 142 167

Installation accessories (cont.)

18 VIESMANN VITODENS 200-W

2

5822 432 GB

Low loss header

Part no. 7460 649

Flow rate max. 4.5 m3/h

Including thermal insulation and integral sensor well.

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

site.

120

HV HR

447

275

G 1½

A

Rp 1

B

350

HV HR

ASensor well

BOptional blow-down

HV Heating water flow

HR Heating water return

Pressure drop

Pressure

drop

kPa

001 2 3 4 5

Flow rate in m³/h

2

4

6

8

10

12

14

Part no. 7460 648

Flow rate max. 7.5 m3/h

Including thermal insulation and integral sensor well.

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

site.

G 2

420

523

295

A

HV HR

Rp 2

G 2

B

420

HV HR

Pressure drop

Pressure

drop

kPa

001 2 3 4 5

Flow rate in m³/h

2

4

6

8

10

12

14

16

6 7 8

Circulation pump curves and pressure drop on the heating water side

The residual pump head results from the difference between the selec-

ted pump curve and the pressure drop curve of the respective heating

circuit distributor or further components (pipe assembly, distributor

etc.).

The following pump diagrams show the pressure drop curves of the

different Divicon heating circuit distributors.

Maximum flow rate for Divicon:

Installation accessories (cont.)

VITODENS 200-W VIESMANN 19

5822 432 GB

2

■with R ¾ = 1.0 m3/h

■with R 1 = 1.5 m3/h

■with R 1¼ = 2.5 m3/h

Example:

Flow rate ´ = 0.665 m3/h

Selected:

Divicon with mixer R ¾ and circulation pump Wilo VIRS 25/4-3, pump

curve 2, pump rate 0.7 m 3/h

Head of the relevant pump

curve: 28 kPa

Divicon pressure drop: 3.5 kPa

Residual head: 28 kPa – 3.5 kPa = 24.5 kPa.

Note

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

pressure drop and deduct it from the residual head.

Manually controlled heating circuit pumps

Wilo VIRS 25/4-3

min.1

Max. head 3

40

0

10

20

30

0

100

200

300

400

0 0.5 1.0 1.5 2.0 2.5

Pump rate in m³/h

Pressure drop/head

mbar

kPa

50500

2

ABC

D

ADivicon R ¾ with mixer

BDivicon R 1 with mixer

CDivicon R 1¼ with mixer

DDivicon R ¾, R 1 and R 1¼ without mixer

Wilo VIRS 25/6-3

Head min.1

Head max.3

40

0

10

20

30

0

100

200

300

400

0 0.5 1.0 1.5 2.0 2.5

Pump rate in m³/h

Pressure drop/head

mbar

kPa

50

500

60

600

2

ABC

D

ADivicon R ¾ with mixer

BDivicon R 1 with mixer

CDivicon R 1¼ with mixer

DDivicon R ¾, R 1 and R 1¼ without mixer

Grundfos VIUPS 25-40

Head min.

Head max.

ABC

D

0

10

20

30

0

100

200

300

40400

0 0.5 1.0 1.5 2.0 2.5

Pump rate in m³/h

Pressure drop/head

mbar

kPa

ADivicon R ¾ with mixer

BDivicon R 1 with mixer

CDivicon R 1¼ with mixer

DDivicon R ¾, R 1 and R 1¼ without mixer

Grundfos VIUPS 25-60

Max. head

Min. head

60600

40

0

10

20

30

0

100

200

300

400

0 0.5 1.0 1.5 2.0 2.5

Pump rate in m³/h

Pressure drop/head

mbar

kPa

50500

ABC

D

ADivicon R ¾ with mixer

BDivicon R 1 with mixer

Installation accessories (cont.)

20 VIESMANN VITODENS 200-W

2

5822 432 GB

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