Cleaning Inlet Openings Of Primary Heat Exchangers; Burner Box Assembly - Payne PG9MTAV Service Manual

CAUTION
!
ELECTRICAL SHOCK, UNIT DAMAGE HAZARD
Failure to follow this caution may result in personal injury or
furnace component damage.
Label all wires prior to disconnection when servicing controls.
Wiring errors can cause improper and dangerous operation.
CELL PANEL
BURNERS
Fig. 4 - - Burner Box Assembly
4. Remove wires from gas valve. Note location for reassembly.
5. Unplug igniter from harness.
6. Remove screws that secure manifold to burner box.
(See Fig. 4.)
NOTE: Do not remove burner box from cell panel.
7. Remove manifold, orifices, and gas valve as 1 assembly.
8. Remove screws attaching burner assembly in burner box.
NOTE: Use care when removing and reinstalling burners not to
strike the hot surface igniter.
9. Remove burner assembly from burner box.
NOTE: All burners are attached to burner bracket and can be
removed as 1 assembly.
10. Clean burners with soft brush and vacuum.
11. Reinstall manifold, orifice, and gas valve assembly in
burner box. Ensure burners fit over orifices.
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
or death.
Igniter wires must be securely placed in slot in manifold
grommet or else they could become pinched or severed and
electrically shorted.
12. Reconnect wires to gas valve and igniter. Refer to furnace
wiring diagram for proper wire location.
13. Reinstall gas supply pipe to furnace gas control valve using
NOTE: Use propane gas resistant pipe dope to prevent gas leaks.
DO NOT use Teflon tape.
FIRE, EXPLOSION, UNIT DAMAGE HAZARD
Failure to follow this warning could result in property damage,
personal injury, or death.
Gas valve switch MUST be facing forward or tilted upward.
14. Turn on gas and electrical supplies to furnace.
FIRE OR EXPLOSION HAZARD
Failure to follow the safety warnings could result in personal
injury, death, or property damage.
Never test for gas leaks with an open flame. Use a
BURNER BOX
commercially available soap solution made specifically for the
detection of leaks to check all connections.
MANIFOLD
GAS VALVE
15. Check for gas leaks.
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16. Replace main furnace door.
Fig. 5 - - Cleaning Inlet Openings of Primary Heat Exchangers
5
backup wrench on gas valve to prevent rotation and
improper orientation.
WARNING
!
WARNING
!
PRIMARY HX
INLET OPENINGS
A07827