Installation / Operation Instruction Manual

11
Electrical connections continued-
If a circulator is used to control the heating fluid flow, wire the thermostat from
the indirect water heater to interrupt one leg of the circulator. For example, a
110 volt circulator should have the hot leg (usually the black wire) wired
through the indirect thermostat. This will enable the indirect thermostat to
control the circulator. This should be used if the boiler is actuated by flow.
Other installations may require slightly different wiring arrangements.
Remember, the thermostat on the indirect water heater only controls one leg of
the system.
Figure 1