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2.2.2 External Pump Wire Connection
An external pump may be connected to the water heater for
recirculation applications. When selecting a circulator, it shall be
sized to maintain a ow of 2-4 GPM at 15 ft (4.6 m) – 23 ft (7 m)
of head through the water heater. Follow the instructions below
when connecting the pump wire accessory to the PCB.
WARNING
Electric shock hazard
To prevent death or serious injury or property damage:
●
DO NOT remove the front cover unless the power to the
water heater is turned o or disconnected.
●
ALWAYS check the water heater is turned o before
connecting the wire to the PCB.
Note
Congure the desired mode according to the instructions
in the NPE A2/S2 Installation Manual.
<Specications>
●
External Pump Wire (#GXXX001319)
●
Maximum Power Consumption: 150 W, 1.5 A
●
Length: 6 ft (183 cm)
Note
When using a pump with larger power requirements than
the listed specication above, a relay should be used to
ensure proper operation.
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