Viessmann Vitocal 222-S, Инструкция по установке и обслуживанию

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For area cooling systems (e.g. under-
floor heating circuit, chilled ceiling), a
contact humidistat (accessory) is
required. Requirements for the contact humidistat:
■ Electrical connection: 230 V~, 0.5 A
■ Installation inside the room to be
cooled at the cooling water flow
(remove thermal insulation if required)
■ If several rooms with different relative
humidity are part of the cooling circuit,
fit and connect several contact humidi-
stats in series:
Switching contacts as N/C contacts
Connections on the DHW side
For connecting the DHW side, observe DIN 1988 and DIN 4753 .
M
A
N
B
C
L K
D
H
O
N
H P R H M O
H
G
F
E
A DHW
B DHW circulation pump
C Spring-loaded check valve
D Heat pump connecting chamber
(plan view)
E Expansion vessel, suitable for drink-
ing water
F Visible discharge pipe outlet point
G Safety valve
H Shut-off valve
K Flow regulating valve
L Pressure gauge connection
M Non-return valve/pipe separator
N Drain valve
O Cold water
P Drinking water filter
R Pressure reducer
Installation sequence
Connecting a cooling circuit if required
5600 950 GB