GASKET
359AAV
A07828
Fig. 16 - Gasket on Collector Box
4.Disconnect pressure switch tubes.
5.Disconnect vent pipe from inducer housing outlet by loosening clamp.
6.Disconnect drain tube from inducer housing. (See Fig. 6 - 14.)
7.Remove inducer housing assembly by removing 4 bolts attaching assembly to cell panel.
8.Flush inside of collector box with water until discharge from condensate trap is clean and runs freely.
NOTE: Ensure that drain tube disconnected from inducer housing is higher than collector box opening or water will flow out tube.
9.Inspect inside area of collector box for any pieces of foreign materials and remove if present.
!CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in furnace component damage.
DO NOT use wire brush or other sharp object to inspect or dislodge materials in secondary heat exchangers as failure of the secondary heat exchanger may occur. Flush with water only.
11.Refer to furnace wiring diagram and connect wires to inducer motor and pressure switch or connectors.
12.Reconnect pressure tubes to pressure switch. See diagram on main furnace door for proper location of tubes. Be sure tubes are not kinked. (See Fig. 6 - 14.)
13.Turn on gas and electrical supplies to furnace.
14.Check furnace operation through 2 complete heat operating cycles. Check area below inducer housing, vent pipe, and condensate trap to ensure no condensate leaks occur. If leaks are found, correct problem.
!WARNING
FIRE OR EXPLOSION HAZARD
Failure to follow the warnings could result in personal injury, death, or property damage.
Never test for gas leaks with an open flame. Use a commercially available soap solution made specifically for the detection of leaks to check all connections.
15.Check for gas leaks.
16.Replace main furnace door.
Procedure 6 — Servicing Hot Surface Igniter
10. Reassemble inducer assembly by reversing items 5 through 7. Tighten the vent coupling screw(s) to 15
NOTE: If gasket between inducer housing and collector box is damaged in any way, it must be replaced. (See Fig. 16.)
The igniter does NOT require annual inspection. Check igniter resistance before removal.
1.Turn off gas and electrical supplies to furnace.
2.Remove main furnace door.
3.Disconnect igniter wire connection.
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