Honeywell DTC 100/2 User Manual Instructions For Installation And Maintenance page 9

Example of coupling with a pump.
In this case it is necessary to connect behind the pump a non-return valve to avoid unwanted
circulation of water.
Electrical connection
DTC 100/2
DTC
Differential thermostat
DTC 100/2
T1, T2
Sensors
T1 - sensor located in the collector
T2 - sensor located in the DHWS
P
P - circulation pump
Non-return valve
9