30
8 - ELECTRICAL CONNECTIONS
Solar control unit
Solar pump
AC contactor
Solar panel
When the solar control unit check the temperature is OK in
solar panel, it will output 220-240V signal.
Power supply
Power supply
Solar probe
Solar probe
well
Scheme 2: the heat pump cannot operate together with the solar pump.
CN26
Solar controller signal input
CN2
Solar pump control
220-240
220-240
CN11
Unit control
Enabled / disabled
Note: solar pump must be controlled through AC contactor.
The CN2 is not allowed to drive the pump directly.
T5U
(Storage tank temp. sensor Upper)
Unit
≤
60°C
Disabled
CN26 (in)
220-240
CN2 (out)
220-240
SOLAR
PUMP
ON
≥
65°C
0
0
OFF
Enabled
CN11
ON
OFF
Operating logic
Electrical connections