Navien NaviCirc Installation And Operation Manual page 43

<External Pump Wire (GXXX001319) Specifications>
Maximum Power Consumption: 150W, 1.5A
●
Length: 6 ft (183 cm)
●
When using a pump with larger power requirements
Note
than the listed specification above, a relay should be
used to ensure proper operation.
1. Disconnect the power supply to the water heater.
2. Remove the two upper screws from the front cover assembly
using a Phillips head screwdriver. Then, release the toggle latch
from the bottom of the front cover assembly to gain access to
the internal components.
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