Viessmann Vitocal 300-G Installation And Service Instructions Manual page 123

Repairs
(cont.)
D
C
Q
R
S
T
U
V
W
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 (accessory for type
BW 301.A)
D
R
I Electronic expansion valve (EEV)
J Compressor
K Flow temperature sensor, secon-
dary circuit
L Return temperature sensor, secon-
dary circuit
M Drain valve on the secondary side
N Circulation pump for cylinder heat-
ing (accessory for type BW 301.A)
Troubleshooting
X
Q
T
S
P
X
F
K
J
123