Carrier 58MEC - Manual (Page 8)

8
inducer assembly. See Flushing Collector Box and Drainage
System section for details on removing inducer assembly.
Step 5 — Flushing Collector Box and Drainage
System
1. Turn off gas and electrical supplies to furnace.
2. Remove main furnace door.
3. Disconnect inducer motor and pressure switch wires or con-
nectors.
4. Disconnect pressure switch tubes.
5. Disconnect vent pipe from inducer housing outlet by
loosening coupling clamp on inducer outlet.
6. Disconnect drain tube from inducer housing. (See Fig. 10.)
NOTE: Ensure the drain tube disconnected from the inducer
housing is higher than the collector box opening or water will flow
out of tube.
7. Remove inducer housing assembly by removing 4 bolts at-
taching assembly to cell panel.
8. Flush inside of collector box with water until discharge
from condensate trap is clean and runs freely.
9. Inspect inside area of collector box for any pieces of foreign
materials and remove them if present.
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 cutting the
secondary heat exchanger protective coating may occur. Flush
with water only.
CAUTION
!
10. Reassemble inducer assembly by reversing items 5-7. Tight-
en vent coupling clamp screw(s) to 15 in.-lb of torque.
NOTE: If seal between the inducer housing and the collector box
is damaged in any way, it must be repaired. To repair, apply
sealant releasing agent such as PAM cooking spray or equivalent
(must not contain corn nor canola oil, halogenated hydrocarbons
nor aromatic content, to prevent inadequate seal from occurring) to
inducer housing. Apply a small bead of G.E. RTV 162, G.E. RTV
6702, or Dow--Corning RTV 738 sealant to groove in collector
box. (See Fig. 12.)
11. Refer to furnace wiring diagram and reconnect wires to in-
ducer motor and pressure switches or connectors.
12. Reconnect pressure tubes to pressure switches. See diagram
on main furnace door for proper location of tubes. Be sure
tubes are not kinked. (See Fig. 10.)
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 the problem.
FIRE OR EXPLOSION HAZARD
Failure to follow this warning 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.
!
WARNING
PAM
RTV
A93087
Fig. 9 -- Combustion--Air Intake Housing
Gasket Repair
15. Check for gas leaks.
16. Replace main furnace door.
58ME
C