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Фрагмент инструкции
If fuse replacement is required, use ONLY a 3-amp fuse of identical size. PILOT — Check the pilot and clean if necessary at the beginning of each heating season. The pilot flame should be high enough for proper impingement of the flame-sensing element (or thermocouple) and to light the burners. Remove the accumulation of soot and carbon from the flame-sensing element (or thermocouple). Refer to Fig. 7 for proper location of pilot on burner assembly. TROUBLESHOOTING — Page 8 contains a troubleshooting chart. This chart can be a useful tool in isolating furnace operation problems. Beginning with the word ‘‘Start,’’ answer each question and follow the appropriate arrow to the next item. The chart will help identify the problem or failed component. After replacing any component, verify correct operating sequence as indicated by bold arrows. 5 FIELD 24-VOLT WIRING FIELD 115-, 208/230-, 460-VOLT WIRING FACTORY 24-VOLT WIRING FACTORY 115-VOLT WIRING THERMOSTAT W RGY 208/230- OR 460-VOLT THREE PHASE 208/230- VOLT SINGLE PHASE shown for proper operation. 115-VOLT FIELD- SUPPLIED FUSED DISCONNECT CONTROL AUXILIARY J-BOX BOX 24-VOLT TERMINAL BLOCK TWO-WIRE HEATING- ONLY FOUR WIRE FIELD-SUPPLIED FUSED DISCONNECT CONDENSING UNIT TWO WIRE NOTE: If any of the original wire, TERMINALS FURNACE R G C GND GND WHT BLK WHT BLK as supplied, must be replaced, use NOTE: Connect Y-terminal as GND same type or equivalent wire. W Y A78461 Fig. 8—Heating and Cooling Application Wiring Diagram 6 FU1 IDR PL1-3 PR-1 PR-2 SEC-1 SEC-2 TRAN24VAC115VACBLWM LOMED LOMED HIHICOMCAP L2 COM 4321C CFRHFR PL4NOTE#4NOTE#8 EAC-1 EAC-2 L1ILK EQUIPMENT GROUNDTO 115V AC FIELD DISCONNECTIONS NOTE #5 NOTE#10 PL2 L1 L2 PL1-1 PL1-4ALSFLLS PL1-7RDSS MGV GV PL1-8 TIME DELAYLOGICHFR 3A FUSE PL1-9 (WHEN USED) NOTE #7 SCHEMATIC DIAGRAMIDM YNCNO PRS C TH TR PILOT IDR WGC NOTE #1 CFR NOTE #10PL1-2PL1-6 NOTES:1. INTERNALLY CONNECTED TO EQUIPMENT GROUND THROUGH 2. IF ANY OF THE ORIGINAL EQUIPMENT WIRE IS REPLACED, 105° C. 3. BLOWER MOTOR (BLWM) & INDUCER MOTOR (IDM) CONTAIN IDR THERMAL OVERLOAD SWITCH. 4. BLOWER MOTOR FACTORY SPEED SELECTIONS (PL4) CONDITIONS. SEE INSTALLATION INSTRUCTIONS SPEED SELECTIONS. 5. USE ONLY COPPER WIRE BETWEEN THE DISCONNECT FURNACE JUNCTION BOX (JB). 6. SYMBOLS ARE ELECTRICAL REPRESENTATIONS 7. AUXILIARY LIMIT SWITCH (ALS) USED ON 8. THE TRANSFORMER 24VAC WINDING BLADE TYPE FUSE ON THE CONTROL DURING INSTALLATION, CHECKOUT, COULD CAUSE THIS FUSE TO OPEN. WITH ANY OTHER SIZE FUSE.9. BLOWER MOTOR (BLWM) ADJUSTABLE 120 SECS. CUT RESISTOR: 180 SECS. 10. WHEN CFR RELAY IS ENERGIZED, 319593-401 REV. C MGV 1 4 7 2 5 8 3 6 9 BLWM LO PRS C NONC DSS BRNTH PILOTGV TR ALS(WHEN USED) NOTE #7 FL LS ORN YEL BRN BLU RED BLK RED BLU BLK BLK BLU REDWHT TRAN WHT ILK NOTE #5WHTBLKIDM GRN JB GRNBLKWHT FU2FUSED DISCONNECT SWITCH (WHEN REQ'D) WHTBLK COMPR2 L2 L1 PR1 HFRCFRLOHI PL1 CONNECTION DIAGRAM RED WHT 4PL212 NOTE #4 PL4 MED LOMED HIHICOM WHTBLKRED NOTE #10EAC-1IDR 321C CAPBRN BRN EAC-2 W Y R C G NOTE #9 PCBNOTE #1 GROUND SCREW REQ'D FU13AMP FUSENOTE #8 SEC-1SEC-2 JUNCTION TERMINAL PCB TERMINAL FACTORY POWER WIRING (120VAC) FACTORY CONTROL WIRING (120VAC) FIELD POWER WIRING (120VAC) AUX. LIMIT SWITCH (OVER TEMP), SPST-(N.C.), MANUAL RESET BLOWER MOTOR CAPACITOR COOLING FAN RELAY, SPDT DRAFT SAFEGUARD SWITCH, SPST-(N.C.), MANUAL RESETELECTRONIC AIR CLEANER CONNECTION (115VAC) ELECTRONIC AIR CLEANER CONNECTION (COMMON) ALS BLWM CAP CFR DSS EAC-1 EAC-2 LEGEND CONDUCTOR ON PCB FIELD WIRING SCREW TERMINAL FIELD GROUND EQUIPMENT GROUND FIELD SPLICE PLUG RECEPTACLE FUSE, 3 AMP, AUTOMOTIVE BLADE TYPE FUSE, FIELD INSTALLED FUSIBLE LINK GAS VALVE, (REDUNDANT) HEATING FAN RELAY, SPST (N.O.) INDUCED DRAFT MOTOR INDUCER DRAFT RELAY, DPST-(N.O.) BLOWER DOOR INTERLOCK SWITCH, SPST-(JUNCTION BOX LIMIT SWITCH (OVER TEMP), SPST-(PRINTED CIRCUIT BOARD (FURNACE 9-CIRCUIT CONNECTOR (PCB1)2-CIRCUIT CONNECTOR (L1, 5-CIRCUIT PLUG CONNECTOR PRESSURE SWITCH, SPDTTRANSFORMER (115VAC/FU1 FU2 FL GV HFR IDM IDR ILK JB LS PCB PL1 PL2 PL4 PRS TRAN 7 A92176 Fig. 9—Unit Wiring Diagram Is 24VAC across pressure switch N/O contact & screw C on board? YES NO Is 24VAC across pressure switch N/O contact & screw C on board? Is heat exchanger pressure drop greater than 0.35-in. wc? Is 24VAC across gas valve? Is unit lit? Check/Replace: 1. Vent systems 2. Induce wheel 3. Flue choke 4. Inducer voltage 5. Inducer motor bearings Check/Replace: 1. Limit switch 2. Limit shield (if used) 3. Fuse link 4. Auxillary limit switch (if used) 5. Wire harness START Disconnect all thermostat wires from board. Turn on 115-VAC power to unit. Is blower running? Is 24VAC across screws R & C? Is 24VAC across screws W & C or G & C? Are all thermostat wires to board disconnected? Turn off 115-VAC power to unit. Replace board. Is 115VAC across L1 & L2? Is 24VAC across screws R & C? Is 115VAC across HI & COM? Is blower running on cooling speed? Jumper across screws R & G. Is 115VAC across EAC-1 & COM? Replace board. Rem...
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