Fan Motor(Combustion Air Blow) - Navien NP-180 Service Manual

8.2.4. Fan Motor(Combustion Air)
1. Turn off the gas supply
2. Turn off the 120V power supply
3. Turn off the water supply
4. Remove the four screws securing the front
panel. Remove front panel.
5. Loosen three fixing screws from the fan
assembly
< Figure 8 >
6. Disconnect the harness housing at the
fan assembly.
< Figure 9 >
©Navien America Inc. 2010
7.Pull out the fan assembly
8. Attach the fan to be replaced.
9. Fix the three screws of the fan.
10. Attach the harness housing to the
fan assembly
11. Install front panel using 4(four) screws.
12. Turn on water supply, power supply,
and gas supply.
NOTE
1. Don't over tight screws with high torque
drill.
It will be damaged to fan housing.
2. Confirm whether the screws tighten enough
or not.
3. Confirm whether there are unnecessar
noises after reinstalled fan.
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NR/NP series service Manual
< Figure 10 >
Version 2.0