Assembly kit accessories
Line regulating valve with flow indicator
Part no. 7452078
For hydronic balancing of the heating circuits
Contact temperature limiter
Part no. 7425493
Maximum temperature limiter for underfloor heating circuits
Contact temperature limiter with 1.5 m long connecting lead
Specification – assembly kit with mixer
Assembly for heat distribution via one heating circuit with mixer and
one heating circuit without mixer, with same design as the boiler. For
installation on the boiler.
The heating circuit without mixer is supplied by the integral circula-
tion pump of the Vitodens. Installation scheme for operation with the
assembly kit: See
.
Max. transferable heating output of the heat-
ing circuit with mixer (ΔT 10 K)
kW
14
Max. flow rate of the heating circuit with mixer
(ΔT 10 K)
l/h
1200
Permiss. operating pressure
bar
MPa
3
0.3
Max. power consumption
W
48
Connections (male thread)
– Gas
R
½
– Heating water
R
¾
– DHW
R
½
Weight (incl. packaging)
kg
20
Residual head of the integral circulation pump for the heating circuit with mixer
0
100
200
300
400
500
0
10
20
30
40
50
kPa
600 60
300 400 500 600 700 800 900 1000 1100 1200
Flow rate in l/h
1300 1400
200
100
0
Min.
Max.
Residual
head
mbar
Calculating the transferable heating output (examples)
The max. heating output that can be transferred via the plate heat
exchanger of the assembly kit is 14 kW. To achieve balanced flow
rates between the regulated heating circuit (assembly kit) and the
unregulated heating circuit (radiator heating circuit), the pressure
drop in the assembly kit must be increased.
For this, the line regulating valve with flow indicator (available as an
accessory) can be fitted to the primary side of the plate heat
exchanger, i.e. between the flow and return. The nominal circulating
water volume of the boiler (see specification), minus the flow rate
through the plate heat exchanger of the assembly kit, results in the
flow rate of the unregulated heating circuit.
Example:
Vitodens 222-F, 1.9 - 25 kW
■ Nominal circulating water volume at ΔT 20 K: 1076 l/h
■ Heating output for regulated heating circuit (assumed): 13 kW
■ Resulting flow rate, primary side, plate heat exchanger at ΔT 20 K:
560 l/h (to be set via the line regulating valve)
■ Flow rate of the unregulated heating circuit: 1076 l/h – 560 l/h =
516 l/h
Connection set for DHW circulation pump
Part no. ZK04314
For installation in the appliance
Components:
■ High efficiency circulation pump
■ Flow regulating valve
■ Pipe assembly with thermal insulation
Connection R ½ (male thread)
Installation accessories
(cont.)
78
VIESMANN
VITODENS
7
5853906
Содержание Vitodens 200-W B2HE
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