Overview Of Internal Components - Viessmann VITOCAL 222-G Series Installation And Service Instructions For Contractors

Maintenance

Overview of internal components

F3
Y
X
T5
W
V
R
O
Fig. 54
Vent valve, secondary circuit
A
Drain & fill valve for DHW cylinder
B
Vent valve, secondary circuit
C
Primary circuit air vent valves
D
Condenser air vent valve, secondary side
E
Condenser
F
66
F6
A
B
C
T4
D
U
T
S
R
S
L
P
M
N
O
N
K
3-way diverter valve "central heating/DHW heat-
G
ing"
Instantaneous heating water heater
H
Compressor
K
Secondary pump
L
Secondary circuit drain & fill valve
M
E
F
T1
T6
G
T2
H
K
T3
T7
L
M