For accurate adjustment of the flow rates, a flow indicator (available
as an accessory) can be installed in the flow line of the unregulated
heating circuit. The nominal circulating water volume of the boiler
(see specification), minus the flow rate through the plate heat
exchanger of the sub-mounting kit, results in the flow rate of the
unregulated heating circuit.
Example:
Vitodens 222-W, 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
■ Flow rate of unregulated heating circuit (to be adjusted via the bal-
ancing valve): 1076 l/h – 560 l/h =
516 l/h
Further accessories
Safety valve
Part no. ZK04936
6 bar (0.6 MPa)
For attachment to connection accessories
Only for AT
DHW expansion vessel
Part no. ZK04937
2 l capacity
Permiss. operating pressure 10 bar (1.0 MPa)
For installation in the Vitodens 222-W
Valve/fittings cover
Part no. ZK04938
Neutralising system with wall mounting bracket
Part no. ZK03652
With neutralising granulate
200
300
361
61
61
131
Neutralising granulate
Part no. ZK03654
2.5 kg
To match the neutralising system, part no. ZK03652
Condensate lifting system
Part no. ZK02486
Automatic condensate removal pump for condensate with a pH
value of ≥ 2.8 from gas condensing boilers
Components:
■ Condensate container 2.0 l
■ Centrifugal pump
■ Non-return valve
■ Connecting cable (1.5 m long) for fault messages
■ Power cable (1.5 m long) with plug
■ 4 connection apertures
7
30 mm for condensate drain with con-
nector
7
max. 40 mm)
■ Drain hose
7
10 mm (5 m long)
Installation accessories
(cont.)
VITODENS
VIESMANN
75
5853906
7
Summary of Contents for Vitodens 200-W B2HE
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