139
Main Burners —
For all applications, main burners are
factory set and should require no adjustment.
MAIN BURNER REMOVAL (Fig. 52)
1. Shut off (field-supplied) manual main gas valve.
2. Shut off power supply to unit.
3. Remove heating access panel.
4. Disconnect gas piping from gas valve inlet.
5. Remove wires from gas valve.
6. Remove wires from rollout switch.
7. Remove sensor wire and ignitor cable from IGC board.
8. Remove 2 screws securing manifold bracket to basepan.
9. Remove 4 screws that hold the burner support plate
flange to the vestibule plate.
10. Lift burner assembly out of unit.
11. Reverse procedure to re-install burners.
Filter Drier —
Replace whenever refrigerant system is ex-
posed to atmosphere.
Replacement Parts —
A complete list of replacement
parts may be obtained from any Carrier distributor upon request.
INLET PRE
SS
URE
TAP (ON
S
IDE)
1/
8
-IN. 27 NPT
OUTLET PRE
SS
URE
TAP (ON
S
IDE)
1/
8
-IN. 27 NPT
HIGH-FIRE REGULATOR
ADJU
S
TMENT
S
CREW
LOW-FIRE REGULATOR
ADJU
S
TMENT
S
CREW
ON/OFF
S
WITCH
Fig. 51 — Gas Valve (Part Number EF33CW271)
A48-8364
A48-3733
Fig. 52 — Main Burner Removal
Summary of Contents for WEATHERMAKER 48/50AJ
Page 103: ...103 Fig 15 Typical Main Control Box Wiring Schematic 48 50AJ AK AW AY Units cont a48 8355 ...
Page 104: ...104 Fig 16 Typical Main Control Box Wiring Schematic 48 50A2 A3 A4 A5 Units a48 8355 ...
Page 105: ...105 TO NEXT PAGE Fig 17 Typical Auxiliary Control Box Wiring Schematic A48 7294 ...
Page 106: ...106 Fig 17 Typical Auxiliary Control Box Wiring Schematic cont a48 8356 ...
Page 107: ...107 Fig 18 Typical 2 Stage Gas Heat Wiring Schematic Size 051 and 060 Units Shown a48 8357 ...
Page 113: ...113 Fig 22 Typical Power Schematic 48 50A2 A3 A4 A5060 Unit Shown ...
Page 114: ...114 SW1 SW2 OR DEHUMIDIFY SWITCH Fig 23 Typical Controls Option Wiring Schematic a48 8361 ...
Page 115: ...115 Fig 24 Typical Small Chassis Component Location Size 020 035 Units a48 8362 ...
Page 116: ...116 Fig 25 Typical Large Chassis Component Locations Size 036 060 Units A48 7302 ...
Page 169: ...169 APPENDIX C VFD INFORMATION cont Fig F Internal Enclosure Fan Replacement A48 7716 ...