Navien NCB-24LSWE, Руководство по обслуживанию

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124 NCB Service Manual Version 1.0
Figure 4
6. Disconnect the wiring connector from the fan
assembly, and then remove the 2 screws from the
gas valve connection as shown in figure 5 below.
Figure 5
7. Pull out the fan assembly and remove the 2 screws
that secure the air intake port to the fan assembly.
8. Remove the four screws from the bottom of the fan
assembly.
Figure 6
9. Detach the fan motor from the assembly and replace
it with the new part.
10. Replace the 3 screws used to attach the fan motor to
the assembly.
11. Reinstall the fan assembly to the bracket by using the
mounting screw.
12. Attach the gas valve connection back to the fan
assembly by using the 3 screws as shown in figure 6.
13. Reconnect the wiring connector from the fan
assembly.
14. Turn on water supply, power supply, and gas supply
to the unit.
NOTE
Do not over-tighten the screws for
the fan motor replacement with high
torque drill. This may cause damage
to the part(s).
6.2.4 Flame Rod
1. Turn off the gas supply to the unit.
2. Disconnect the unit from the power supply.
3. Turn off the water supply to the unit.
4. Remove the Ignition Transformer insulated cables.
5. Remove the 2 screws from the flame rod as shown in
figure 7 below.
Figure 7