Connecting The Extension Cable - Navien NR-21DU Manual

Connecting the Extension Cable

1. Connect one end of the extension cable to the
port on the front panel of the water heater.
2. Pass the other end of the extension cable
through the hole in the bracket.
3. Connect the end of the extension cable to the
cable connected to the remote controller.
Note You can connect up to 2 remote controllers if
necessary.(Optional)
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