In an Easy-Link system, the pump must be connected to the “Pump” connector in
the “PARENT” unit only. If the pump is connected to any of the “CHILD” units, the
pump will not work.
PUMP CONTROL CONNECTIONS
Available on the 510 (T-D2) models only
The 510 (T-D2) models water heaters can be used to control a recirculation pump. Proper pump control
helps to preserve the life of the system and saves energy as well.
The water heater pump control port is a “normally open dry contact”, and therefore needs additional
components to properly control a recirculation pump. To control a recirculation pump, connect the
pump to the “Pump” connector in the water heater as shown in the diagram below. (In an Easy-Link
system, connect the pump ONLY to the “PARENT” unit.) The pump is to be connected using suitable
relays shown in the diagram below.
Please make sure the relays are properly rated for the recirculation pump.
Using the water heater’s internal thermistors as a temperature control, the recirculation pump will only
turn on when recirculation is needed.
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