page 69
DTC 100/4 TD
Connection with Two Pumps
In order to prevent water circulation, behind the pump a retaining valve should be
installed. When conditions for heating a heating circuit are achieved, pump switches on.
Electric connection
DTC
Differential thermostat
DTC 100/4TD
T1, T2, T3, T4
Sensors
T1 - collector sensor
T2 - hot water tank sensor
T3 - boiler sensor
T4 - hot water tank sensor
P1, P2
Circuit pump
P2 - primary circuit pump
P1 - after-heating circuit
pump
RV1, RV2
Nonreturn valve
BOILER
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