Viessmann VITOCAL 200-G Installation And Service Instructions Manual page 79

Repairs
(cont.)
D
C
S
U
W
I
A Condenser
B Evaporator
C Primary circuit flow temperature
sensor (heat pump brine inlet)
D Schrader low pressure valve
E Schrader high pressure valve
F Instantaneous heating water heater
(accessory)
G Primary pump
I Thermal expansion valve EEV
D
C
J Compressor
K Flow temperature sensor, secon-
L Return temperature sensor, secon-
M Drain valve, secondary side
N Circulation pump, cylinder heating
O Secondary pump
P Air vent valve, secondary side
Q Low pressure switch
Troubleshooting
X
Q
S
P
X
F
K
J
dary circuit
dary circuit
79