Viessmann Vitocal 300 AWO-M-AC 301.A, Installation And Service Instructions Manual

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121
Type AWCI-M-AC 301.A
F
G
H
L
M
N
O
P
R
S
E
D
C
A
B
K
T
A
Collector
B Schrader valve, high pressure side
C Filter dryer
D Liquid gas temperature sensor
E Electronic expansion valve (EEV)
F
Manual air vent valve
G Secondary circuit flow temperature
sensor
H 4-way diverter valve
K High pressure sensor
L
Safety high pressure switch
M Hot gas temperature sensor
N Digital scroll valve
O Low pressure sensor
P Schrader valve, low pressure side
R
Suction gas temperature sensor
S Return temperature sensor, secon-
dary circuit
T Drain valve
Draining the heat pump on the secondary side
1. Close the on-site drain & fill valve. 2. Drain the heat pump at the drain
valve in the secondary circuit flow.
■ Type AWCI-M-AC 301.A:
Use drain valve T .
■ Type AWO-M-AC 301.A:
Use on-site valve.
Troubleshooting
Repair
(cont.)
5692 875 GB
Service