
In case of using analog signals, the use of an isolation transformer in the power
supply is recommended.
Temperature sensor No 1.
Water inlet, circuit 1.
Thermostat operation: HEATING-COOLING
Temperature sensor No 2.
Water outlet.
Safety thermostat No. 1. Resistance No. 1.
Temperature sensor No 3.
deFrost control.
Temperature sensor No 4.
Water outlet, circuit 2.
Safety thermostat No 2. Resistance No 2.
Temperature sensor No 5.
Defrost control C2