Type Bws 301.A; Opening The Casing Door - Viessmann Vitocal 300-G Series Installation And Service Instructions Manual

Overview of wiring chamber

Type BWS 301.A

Fig. 40
Transformer, EEV PCB
A
EEV PCB (refrigerant circuit controller)
B
Compressor contactors, starter control, three-
C
phase monitor
Cable channel
D
Compressor power supply
E
Plug for connecting cable, heat pump stage 1
M
stage 2 230 V~
Plug for connecting cable, heat pump stage 1
N
stage 2, low voltage

Opening the casing door

To open the casing door: See "Removing the heat
pump module" on page 69.
(cont.)
E
N
M
D
C
B
A
–
–
Maintenance
63