Navien NCB700-42C Installation & Operation Manual page 66

Condensing combi boiler
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6. Loosen the five screws holding the front panel and remove
the front panel.
When removing the front panel, label all wires and
Note
make sure all wires are disconnected.
7. Use a Phillips screwdriver to remove the four screws where
gas inlet pipe is attached to the fan motor assembly. Loosen
the hex nut located above the gas valve and remove the gas
pipe.
Remove
4 screws
here
Loosen
the hex
nut here
8. Remove the screw connecting the fan motor assembly
and the mixing chamber, and then remove the fan motor
assembly.
9.
Remove the five bolts securing the chamber brackets.
10. Remove the two screws connecting the ignition transformer
to the heat exchanger and then remove the ignition
transformer.
Appendices
65

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Ncb700-54c

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