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Operation and Installation Manual
27
3.11. Removing the top cover
2
2
2
3
1. Remove the controller (see Section 3.9.).
2. Remove the 4 bolts from the top cover.
3. Lift the top cover upwards.
3.12. Unit wiring diagram
mains
compr
essor
fan
ambien
t sensor
ev
apor
at
or sensor
additional sensor
GND
check sensor
GND
DHW tank sensor
GND GND
DHW tank pump
hea
ter
aux pump
cir
cula
tion pump
Pr
essur
e swit
ch
sensors
ST-53.2 Controller
7 - auxiliary pump
8 - circulation pump
G1 - heater contactor
M2 - compressor
M1 - fan
C1 - fan capacitor
C2 - compressor capacitor
Lp - low pressure switch
Hp - high pressure switch
fan
contactor
electric heater (optional)
compressor
The maximum power of the electric heater is 2 kW.
3. Installation
WZÓR