Overview Of Electrical Components - Viessmann Vitocal 222-G Installation And Service Instructions Manual

Overview of electrical components

Type BWT 221.A (400 V~)
G
H
K
L
aCH
kK
M
N
P
Fig. 42
Reset button of the high limit safety cut-out of the
A
instantaneous heating water heater
Compressor contactor
F B
Cable channel
C
3 rows of luster terminals
D
C
Controller and sensor PCB
E
Programming unit
F
Main PCB
G
E
Expansion PCB on the main PCB
H
Compressor power supply
K
Switching module with power supply for instanta-
L
neous heating water heater
Type BWT 221.A08/A10: full wave soft starter
M
D
Motor overload relay
N
Phase monitor (accessories)
P
Secondary pump plug
sG
Primary pump plug
sH
C
Compressor plug
kK
3-way diverter valve plug
lJ
C
Safety chain plug
aYH
Plug, switching module, instantaneous heating
aCH
water heater
X3 Plug, compressor control and safety equipment
switching
X3
sG
sH
lJ
aYH
C
B
A
Maintenance
51