Haier GE NF96DS Service Manual page 50

26. Route heating component wiring through hole in blower
deck and reinsert strain relief bushing.
27. Reinstall electrical junction box.
28. Reinstall exhaust and air intake pipe seal plate. Reinstall
exhaust and air intake pipes and tighten clamps on pipe
seal plate.
29. Reinstall the cold end header box.
30. Reinstall the combustion air inducer. Reconnect the
combustion air inducer to the wire harness.
31. Reinstall pressure switch assembly and reconnect
pressure switch wiring.
32. Carefully connect combustion air pressure switch tubing
from pressure switches to proper ports on cold end
header collector box.
33. Reinstall condensate trap.
34. Secure burner box assembly to vestibule panel using
four existing screws. Make sure burners line up in center
of burner ports.
35. Reconnect exhaust piping and exhaust drain tubing.
36. Reconnect flame roll-out switch wires.
37. Reconnect sensor wire and reconnect 2-pin plug from
ignitor.
38. Reinstall gas valve manifold assembly. Reconnect gas
supply line to gas valve.
39. Reinstall burner box cover if equipped.
40. Reconnect plug to gas valve.
41. Replace the blower compartment access panel.
42. Follow lighting instructions on unit nameplate to light
and operate furnace for 5 minutes to ensure the furnace
is operating properly.
43. Check all piping connections, factory and field, for gas
leaks. Use a leak detecting solution or other preferred
means.
44. Replace access panel.
CAUTION
Some soaps used for leak detection are corrosive to
certain metals. Carefully rinse piping thoroughly after
leak test has been completed. Do not use matches,
candles, flame or other sources of ignition to check for
gas leaks.
Cleaning the Burner Assembly (if needed)
1. Turn off electrical and gas power supplies to furnace.
Remove upper and lower furnace access panels.
2. Disconnect the 2-pin plug from the gas valve.
3. Remove the burner box cover (if equipped).
4. Disconnect the gas supply line from the gas valve.
Remove gas valve/manifold assembly.
5. Loosen clamps and remove combustion air intake
flexible connector (if equipped).
6. Mark and disconnect sensor wire from the sensor.
Disconnect plug from the ignitor at the burner box.
7. Remove four screws which secure burner box assembly
to vest panel. Remove burner box from the unit.
8. Use the soft brush attachment on a vacuum cleaner to
gently clean the face of the burners. Visually inspect the
inside of the burners and crossovers for any blockage
caused by foreign matter. Remove any blockage.
9. Reinstall the burner box assembly using the existing
four screws. Make sure that the burners line up in the
center of the burner ports.
10. Reconnect the sensor wire and reconnect the 2-pin plug
to the ignitor wiring harness.
11. Reinstall combustion air intake flexible connector (if
equipped), secure using existing clamps.
12. Reinstall the gas valve manifold assembly. Reconnect
the gas supply line to the gas valve. Reinstall the burner
box cover.
13. Reconnect plug to gas valve.
14. Replace the blower compartment access panel.
15. Refer to instruction on verifying gas and electrical
connections when re-establishing supplies.
16. Follow lighting instructions to light and operate furnace
for 5 minutes to ensure that heat exchanger is clean and
dry and that furnace is operating properly.
17. Replace access panel.
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