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CANADIAN GAS ASSOCIATION
58GFA
Induced Combustion Furnaces
Service and Maintenance Instructions
For Sizes 065-150 Series 130
NOTE: Read the entire instruction manual before starting the
installation.
Theseproceduresareforsizes65,000through150,000Btuhunits.
Index Page
ama
®
APPROVED
R
SAFETY CONSIDERATIONS.....................................................1
CARE AND MAINTENANCE..................................................1-4
Air Filter Arrangement.......................................
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MOUNTING
SCREWS Turn off the gas and electrical supplies to the unit before DRAFT
performinganymaintenanceorservice.Followtheoperating SAFEGUARD
instructions on the label attached to the furnace. A failure to SWITCH follow this warning could result in personal injury. FLUE
RELIEF
COLLECTOR
BOX BOX Neverstoreanythingon, near, or in contact with the furnace, GAS
such as: VALVE 1. Spray or aerosol cans, rags, brooms, dust mops, vacuum cleaners or other cleaning tools. 2. Soap powders, bleach
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6. Mark blower wheel, motor, and motor support in relation to e. Gas valve blower housing before disassembly to ensure proper reassem- f. Edge connector leading to control box bly. 4. Remove 8 screws that secure flue collector box to center 7. Loosen setscrew holding blower wheel on motor shaft. panel. Be careful not to damage sealant. 8. Remove bolts holding motor mount to blower housing and 5. Remove complete inducer assembly from furnace, exposing slidemotorandmountoutofhousing.Disconnectgrou
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(10.) Reinstall cell inlet plates and burner assembly. Care PILOT HEAD V–NOTCH FALLS
DIRECTLY BELOW FRONT EDGE
must be exercised to center the burners in the cell OF BURNER CARRYOVER. openings. 7. Aftercleaningflueopenings,checksealantonfluecollectorto ensurethatithasnotbeendamaged.Ifnewsealantisneeded, contact your dealer or distributor. 8. Clean and replace flue collector assembly, making sure all 8 screws are secure. 1 / ″ 8 9. Reinstall 2 screws in relief box. 10. Reconnect wires t
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FIELD 24-VOLT WIRING
FIELD 115-, 208/230-, 460-VOLT WIRING
FACTORY 24-VOLT WIRING
FACTORY 115-VOLT WIRING NOTE 2 THERMOSTAT
WC R G Y FIVE
FIELD-SUPPLIED
TERMINALS WIRE
FUSED DISCONNECT THREE-WIRE
208/230- OR
HEATING-
460-VOLT
ONLY THREE
PHASE W BLK BLK R WHT WHT 208/230-
VOLT
GND GND G SINGLE
AUXILIARY
115-VOLT FIELD-
PHASE J-BOX C GND SUPPLIED
NOTE 1 CONTROL
FUSED
CONDENSING
Y BOX DISCONNECT UNIT TWO
24-VOLT
WIRE
TERMINAL
BLOCK
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GV DSS L2 TO 115V AC FIELD DISCONNECTIONS PRS L1 SCHEMATIC MGV CONNECTION DIAGRAM TH BRN NO ILK TR NOTE #4 DIAGRAM C NC EQUIPMENT GROUND PILOT L1 LO L1 SPARE-2 HFR CFR MED LO LS HEAT ALS FL MED HI HI START NOTE #9 SPARE-1 OL (WHEN USED) COOL CAP NOTE #6 COM IDM COM WHT BLWM EAC-1 IDR EAC-2 BLK PL1-3 IDM PL1-1 BLU TRAN 115V AC NOTE #4 FUSED DISCONNECT ILK SWITCH (WHEN REQ’D) LS FL ALS PR-1 FU1 PR-2 PL1-4 TRAN BLK PL1-7 BLK 3A 24V AC SEC-1 SEC-2 FU2 FUSE WHT NOTE #7 (WHEN USED) WHT GRN COM NOTE #6
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START Turn on 115-VAC
Disconnect all thermostat
Turn off 115-VAC
power to unit. wires from board. power to unit. NO Are
Is 24VAC
Is 24VAC
all thermostat
YES YES YES Is blower
across screws
across screws
wires to board
running? W & C or
R & C? disconnected? G & C? NO NO NO YES Check/Replace:
1. Limit switch
Jumper across
Replace
2. Limit shield (if used)
screws R & G. board. 3. Fuse link
4. Auxillary limit switch (if used)
5. Wire harness YES Is
Is
Is
Is
NO NO YES 24VAC
bl
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SERVICE TRAINING Packaged Service Training programs are an excellent way to increase your knowledge of the equipment discussed in this manual, including:
• Unit Familiarization • Maintenance
• Installation Overview • Operating Sequence
A large selection of product, theory, and skills programs is available, using popular video-based formats and materials. All include video and/or slides, plus companion book.
Classroom Service Training plus "hands-on" the products in our labs can mean
