Carrier 48TJD008-014 User Manual download pdf (Page 29)

REMOVAL AND REPLACEMENT OF GAS TRAIN

(Fig. 45 and 46)

1. Shut off manual gas valve.

2. Shut off power to unit.

3. Slide out burner section side panel (not shown).

4. Disconnect gas piping at unit gas valve.

5. Remove wires connected to gas valve. Mark each wire.

6. Remove wires from ignitor and sensor wires at the Inte-

grated Gas Unit Controller (IGC).

7. Remove the 2 screws that attach the burner rack to the

vestibule plate.

8. Slide the burner tray out of the unit (Fig. 46).

9. To reinstall, reverse the procedure outlined above.

CLEANING AND ADJUSTMENT

1. Remove burner rack from unit as described in Removal

and Replacement of Gas Train section, above.

2. Inspect burners; if dirty, remove burners from rack.

3. Using a soft brush, clean burners and cross-over port as

required.

4. Adjust spark gap. See Fig. 47.

5. Reinstall burners on rack.

6. Reinstall burner rack as described in Removal and Re-

placement of Gas Train section, this page.

Replacement Parts — A complete list of replace-

ment parts may be obtained from any Carrier distributor upon

request.

BURNER

SECTION

ROLLOUT

SWITCH

INDUCED-DRAFT

MOTOR

FLUE

EXHAUST

FLUE

EXHAUST

VESTIBULE

PLATE

MANIFOLD

PRESSURE TAP

GAS VALVE

Fig. 45 — Burner Section Details

Fig. 46 — Burner Tray Details

1 ... 28 29 30 ... 40

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Carrier 48TJD008-014 User Manual Page 29

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