HEAT CONTROLLER INSTALLATION INSTRUCTIONS FOR UPFLOW & DOWNFLOW/HORIZONTAL HIGH EFFICIENCY CONDENSING GAS FURNACES GLUB/GLDB SERIES U.L. recognized fuel gas and CO (carbon monoxide) detectors are recommended in all applications, and their installation should be in accordance with the manufacturer’s recommendations and/or local laws, rules, regulations, or customs.
INSTALLATION CHECK LIST REFER TO INSTALLATION INSTRUCTIONS GAS SUPPLY Adequate pipe size TERMINATIONS – DIRECT VENT VERTICAL Correct supply pressure (during furnace operation) Intake – 12" min. above roof/snow level Manifold pressure Correct relationship – exhaust to intake No gas leaks L.P. Kit Number (if applicable) ELECTRICAL 115 V.A.C.
SAFETY INFORMATION ! WARNING USE ONLY WITH TYPE OF GAS APPROVED FOR THIS FURNACE. REFER TO THE FURNACE RATING PLATE. ! WARNING INSTALL THIS FURNACE ONLY IN A LOCATION AND POSITION AS SPECIFIED IN THE LOCATION REQUIREMENTS AND CONSIDERATIONS SECTION OF THESE INSTRUCTIONS. PROVIDE ADEQUATE COMBUSTION AND VENTILATION AIR TO THE FURNACE SPACE AS SPECIFIED IN THE VENTING SECTION OF THESE INSTRUCTIONS.
! WARNING DUCT LEAKS CAN CREATE AN UNBALANCED SYSTEM AND DRAW POLLUTANTS SUCH AS DIRT, DUST, FUMES AND ODORS INTO THE HOME CAUSING PROPERTY DAMAGE. FUMES AND ODORS FROM TOXIC, VOLATILE OR FLAMMABLE CHEMICALS, AS WELL AS AUTOMOBILE EXHAUST AND CARBON MONOXIDE (CO), CAN BE DRAWN INTO THE LIVING SPACE THROUGH LEAKING DUCTS AND UNBALANCED DUCT SYSTEMS CAUSING PERSONAL INJURY OR DEATH (SEE FIGURE 3).
IMPORTANT: All manufacturer products meet current Federal OSHA Guidelines for safety. California Proposition 65 warnings are required for certain products, which are not covered by the OSHA standards. California's Proposition 65 requires warnings for products sold in California that contain, or produce, any of over 600 listed chemicals known to the State of California to cause cancer or birth defects such as fiberglass insulation, lead in brass, and combustion products from natural gas.
GENERAL INFORMATION The GLUB and GLDB series furnaces are design-certified by CSA for use with natural and propane gases as follows: 1. As non-direct vent central forced air furnaces taking combustion air from the installation area or using air ducted from the outside. 2. As direct vent central forced air furnaces with all combustion air supplied directly to the furnace burners through a special air intake system outlined in these instructions.
IMPORTANT INFORMATION ABOUT EFFICIENCY AND INDOOR AIR QUALITY Central cooling and heating equipment is only as efficient as the duct system that carries the cooled or heated air. To maintain efficiency, comfort and good indoor air quality, it is important to have the proper balance between the air being supplied to each room and the air returning to the cooling and heating equipment.
LOCATION REQUIREMENTS AND CONSIDERATIONS GENERAL INFORMATION ! WARNING DO NOT USE THIS FURNACE DURING CONSTRUCTION IF AIR LADEN CORROSIVE COMPOUNDS ARE PRESENT SUCH AS CHLORINE AND FLUORINE. OTHERWISE, PROVISIONS MUST BE TAKEN TO PROVIDE CLEAN, UNCONTAMINATED COMBUSTION AND VENTILATION AIR TO THE FURNACE. FURNACE COMBUSTION AND VENTILATION AIR CONTAMINATED WITH THESE COMPOUNDS FORMS ACIDS DURING COMBUSTION WHICH CORRODES THE HEAT EXCHANGER AND COMPONENT PARTS.
c. The heat tape should be rated at 5 or 6 watts per foot at 120V. IMPORTANT: Support this unit when installed. Since this furnace is suitable for attic or crawl space installation, it may be installed on combustible wood flooring or by using support brackets. See Figure 5. FIGURE 5 HORIZONTAL FURNACE INSTALLED W/SUPPORT BRACKETS GAS PIPE INTAKE VENT ELECTRICAL CONDUIT 5. IMPORTANT: If installing in a utility room, be sure the door is wide enough to: a.
267⁄16 2 DIA. GAS CONNECTION SUPPLY AIR 273⁄8 AIRFLOW RETURN AIR 191⁄8 1927⁄32 155⁄8 2 2 2 2 2 2 D 181⁄2 181⁄2 181⁄2 15 15 15 E 179⁄32 179⁄32 173⁄8 1325⁄32 1325⁄32 1325⁄32 F 0 0 0 0 0 0 LEFT SIDE 0 0 0 0 0 0 0 0 0 0 0 0 BACK 2 DIA. GAS CONNECTION 1 1 1 1 1 1 TOP 2* 2* 2* 2* 2* 2* 0 0 0 0 0 0 FRONT VENT MINIMUM CLEARANCE (IN.) RIGHT SIDE *A service clearance of at least 24 inches is recommended in front of all furnaces.
AIRFLOW SUPPLY AIR 225⁄8 2 2 2 2 2 D 235⁄8 201⁄8 201⁄8 165⁄8 165⁄8 E 207⁄8 173⁄8 173⁄8 137⁄8 137⁄8 F 0 0 0 0 0 LEFT SIDE 0 0 0 0 0 0 0 0 0 0 BACK 43⁄8 2 DIA. ALT. GAS CONNECTION 2513⁄16 1 1 1 1 1 TOP 2* 2* 2* 2* 2* 0 0 0 0 0 FRONT VENT MINIMUM CLEARANCE (IN.) RIGHT SIDE *A service clearance of at least 24 inches is recommended in front of all furnaces.
12 43⁄8 2 DIA. ALT. GAS CONNECTION 2513⁄16 2 DIA.
DUCTING Proper air flow is required for the correct operation of this furnace. Too little air flow can cause erratic operation and can damage the heat exchanger. The duct system must carry the correct amount of air for heating and cooling if summer air conditioning is used. Size the ducts according to acceptable industry standards and methods. The total static pressure drop of the air distribution system should not exceed 0.5" w.c.
4. Connect the furnace to the supply air plenum. 5. Connect the return air ducting to the return air opening at the top of the unit. Make the connection air tight to prevent entraining combustion gases from an adjacent fuel-burning appliance. 6. Be sure to have adequate space for the unit filter. NOTE: DO NOT take return air from bathrooms, kitchens, furnace rooms, garages, utility or laundry rooms, or cold areas. 4. Connect the return air ducting to the return air opening at the right end of the unit.
OVERTEMPERATURE SAFETY SWITCHES Furnaces are equipped with safety switches in the control compartment to protect against overtemperature conditions caused by inadequate combustion air supply. The switches for the upflow and downflow models are located in the burner compartment. If a switch is tripped it must be manually reset.
COMBUSTION AND VENTILATION AIR NON-DIRECT FURNACE INSTALLATIONS ! WARNING THE FURNACE AND ANY OTHER FUEL-BURNING APPLIANCE MUST BE PROVIDED WITH ENOUGH FRESH AIR FOR PROPER COMBUSTION AND VENTILATION OF THE FLUE GASES. MOST HOMES WILL REQUIRE THAT OUTSIDE AIR BE SUPPLIED INTO THE FURNACE AREA. FAILURE TO DO SO CAN CAUSE PERSONAL INJURY OR DEATH FROM CARBON MONOXIDE POISONING. Adequate facilities for providing air for combustion and ventilation must be provided in accordance with section 5.
BTUH Input Free Area Each Opening 45,000 100 square inches 60,000 100 square inches 75,000 100 square inches 90,000 100 square inches 105,000 105 square inches FIGURE 11 AIR FROM HEATED SPACE B. USING OUTDOOR AIR FOR COMBUSTION IMPORTANT: Do not take air from an attic space that is equipped with power ventilation. FURNACE The confined space must communicate with the outdoors in accordance with Methods 1 or 2. The minimum dimension of air openings shall not be less than 3 inches.
Method 2 (Not Shown) One permanent opening, located within 12 inches of the top of the enclosure, shall be permitted where the equipment has clearances of at least 1 inch from the sides and back and 6 inches from the front of the appliance. The opening shall directly communicate with the outdoors or communicate through a vertical or horizontal duct to the outdoors or spaces (crawl or attic) that freely communicate with the outdoors, and shall have a minimum free area of: a.
VENT PIPE INSTALLATION NON-DIRECT VENT INSTALLATION GUIDELINES TABLE 1 FOR NON-DIRECT VENT APPLICATIONS - AIR FOR COMBUSTION PROVIDED FROM INDOORS MAXIMUM ALLOWABLE LENGTH IN FEET OF EACH EXHAUST PIPE AND INTAKE PIPE IMPORTANT: Failure to correctly follow all venting guidelines may result in erratic furnace operation, freeze-up of combustion air or exhaust air piping or sooting of the furnace.
“rub-a-tex” insulation may also be used as long as there is no heat tape applied to the vent pipe. For horizontal runs where water may collect, wrap the vent pipe with self-regulating 3 or 5 watt heat tape. The heat tape must be U.L. listed and installed per the manufacturer’s instructions. 6. The minimum vent pipe length is 5 feet. STANDARD INSTALLATIONS The single-pipe system requires an exhaust pipe only.
Canadian Installations US Installations US Installations Natural Gas and Propane Installation Code National Fuel Gas Code Canadian Installations FIGURE 17 OTHER THAN DIRECT VENT TERMINAL CLEARANCES 21
DIRECT VENT INSTALLATIONS ! WARNING READ AND FOLLOW ALL INSTRUCTIONS IN THIS SECTION. FAILURE TO PROPERLY VENT THIS FURNACE CAN CAUSE CARBON MONOXIDE POISONING OR AN EXPLOSION OR FIRE, RESULTING IN PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. Direct vent installations require a dedicated combustion air and venting system. All air for combustion is taken from the outside atmosphere and all combustion products are discharged to the outdoors. Therefore, no ventilation or combustion air openings are required.
COMBUSTION AIR FOR DIRECT VENT INSTALLATIONS STANDARD HORIZONTAL TERMINATIONS THE COMBUSTION AIR SYSTEM DESIGNED FOR THIS FURNACE MUST BE USED. When 3-in. pipe is used between the furnace and outside wall, reduce it to 2 inches before penetrating the wall. Up to 18 inches of 2-in. pipe may be used inside the wall. When this furnace is installed as a direct vent forced air furnace, all combustion air is supplied directly to the burner through a special air inlet system outlined in these instructions.
• Insulate the entire length of vent pipe, between the elbow where the pipe exits the wall and the elbow where the termination is made, with a closed-cell insulation, such as “Arm-a-Flex” or “Rub-a-Tex” with a minimum of 1/2” thickness. FIGURE 18 ALTERNATE HORIZONTAL DIRECT VENT TERMINATION NOT APPLICABLE TO GLDB75 GLDB90 GLDB105 EXHAUST VENT 2" PVC FOR MODELS WITH INPUTS OF 45,000 AND 105,000 BTU. ELBOWS AND RISERS ARE 2" PVC.
NOTE: The following IPEX brand concentric terminations (System 636) may be purchased in the field and used in place of factory supplied kits: CONCENTRIC TERMINATIONS VERTICAL/HORIZONTAL CONCENTRIC VENT KIT NO. RXGY-E03A 3” Concentric Kit – Item # 196006 This kit is for vertical/horizontal intake air/vent runs and may be installed through roofs and sidewalls. One 5” diameter hole is required for the installation. See Figure 19 for the general layout.
FIGURE 20 STANDARD VERTICAL DIRECT VENTING UPFLOW MODEL SHOWN (TYPICAL FOR DOWNFLOW MODELS) 3" MAX. COMBUSTION AIR PIPE EXHAUST PIPE ROOF LINE COMBUSTION AIR PIPE 12" MIN. 3" MAX. SEPARATION 30ⴖ MAX 3" MAX. EXHAUST VENT COMBUSTION AIR PIPE 1 12" MIN. EXHAUST VENT 12" MIN. 12" MIN. SEPARATION 5 12" MIN. ABOVE ROOF LEVEL 2 12" MIN. 3 ANTICIPATED SNOW LEVEL ROOF LINE 5 COMBUSTION AIR PIPE NOTES: THE COMBUSTION AIR PIPE MUST TERMINATE IN THE SAME PRESSURE ZONE AS THE EXHAUST PIPE.
Canadian Installations US Installations US Installations Natural Gas and Propane Installation Code National Fuel Gas Code Canadian Installations FIGURE 22 DIRECT VENT TERMINAL CLEARANCES≤ 27
LOCATION REQUIREMENTS HORIZONTAL DIRECT VENTS ! CAUTION THE COMBUSTION PRODUCTS AND MOISTURE IN THE FLUE GASES WILL CONDENSE AS THEY LEAVE THE TERMINATION. THE CONDENSATE CAN FREEZE ON THE EXTERIOR WALL, UNDER THE EAVES AND ON SURROUNDING OBJECTS. SOME DISCOLORATION TO THE EXTERIOR OF THE BUILDING IS TO BE EXPECTED.
FIGURE 24 FIGURE 25 TWO FURNACE VENTING THROUGH ROOF TWO FURNACE VENTING THROUGH WALL TWO-PIPE VENTING TWO-PIPE VENTING EXHAUST VENT MODELS 04-06 TO BE REDUCED TO 2” PVC LAST 12”. 3” MINIMUM 24” MAXIMUM 3” MINIMUM 24” MAXIMUM CONCENTRIC VENTING CONCENTRIC VENTING 8” MINIMUM 24” MAXIMUM 8" MINIMUM 12" ABOVE AVERAGE SNOW ACCUMULATION. MAXIMUM OF 24 IN. ABOVE ROOF. SEE CONCENTRIC VENT SECTION ON PAGE 23 FOR MORE INFORMATION.
RXGY-G02 SIDE WALL VENT This termination for horizontal venting only. IMPORTANT: Do not install on the prevailing winter wind side of the structure. Observe same clearances specified for horizontal, standard termination. NOTE: Multi-venting-No common venting. NOTE: Install the vent and air intake piping into the vent plate openings. Seal all gaps between the pipes and wall. Be Sure To Use Silicone Sealant to seal the vent pipe to the vent cap to permit field disassembly for annual inspection and cleaning.
CONNECTING TO FURNACE IMPORTANT: Clean and debur all pipe cuts. The shavings must not be allowed to block the exhaust, inlet or condensate drain pipes. FIGURE 28 UPFLOW COMBUSTION AIR AND VENT PIPE CONNECTION “O” RING TOP PLATE UPFLOW FURNACE VENT CAP/PLUG The exhaust pipe connection is a 2-in. female PVC pipe fitting extending through the left side of the furnace top plate. This opening has a protective cap which should be removed just prior to installing the exhaust pipe. When 2-in.
CONDENSATE DRAIN/NEUTRALIZER GENERAL INFORMATION ! CAUTION DO NOT RUN DRAIN OUTDOORS. FREEZING OF CONDENSATE CAN CAUSE PROPERTY DAMAGE. IMPORTANT: Do not connect into a common drain line with an air conditioner evaporator coil drain located below the furnace. A blocked or restricted drain line can result in overflow of the coil pan and negate the furnace blocked drain shutoff control. FILL TRAP ASSEMBLY WITH WATER BEFORE OPERATING THE FURNACE.
REVERSING THE TRAP insure a good seal in the burner compartment. UPFLOW UNITS The trap may be moved to the right side for right side drainage. Open the knockout for the drain on the right side of the cabinet. Remove the bracket holding the trap from the left side. Seal the left side drain hole with a plug provided in the cloth bag with the furnace. Position the mounting bracket and trap so that the drain elbow is centered in the hole on the right. See Figure 32.
CONVERTING DOWNFLOW TO HORIZONTAL CONDENSATE DRAIN FOR HORIZONTAL INSTALLATION Refer to Figure 35 for Steps 1-5. 1. This unit is shipped factory ready for downflow installation. The condensate trap assembly and drain hoses require conversion for horizontal installation. Remove the existing condensate trap with the unit in the upright position. IMPORTANT: This furnace may only be installed so that when facing the front of the furnace, supply air is discharged on the left hand side. 2.
FIGURE 36 HORIZONTAL POSITION: CONDENSATE TRAP INSTALLATION FOR HORIZONTAL OPERATION FIGURE 35 UPRIGHT POSITION: REMOVAL OF EXISTING DOWNFLOW CONDENSATE TRAP CONDENSATE TRAP CONVERSION FROM DOWNFLOW TO HORIZONTAL INSTALLATION I534
GAS SUPPLY AND PIPING GAS SUPPLY ! FIGURE 37 GAS PIPING INSTALLATION UPFLOW WARNING THIS FURNACE IS EQUIPPED AT THE FACTORY FOR USE ON NATURAL GAS ONLY. CONVERSION TO LP GAS REQUIRES A SPECIAL KIT SUPPLIED BY THE DISTRIBUTOR OR MANUFACTURER. MAILING ADDRESS IS LISTED ON THE WARRANTY. FAILURE TO USE THE PROPER CONVERSION KIT CAN CAUSE FIRE, CARBON MONOXIDE POISONING, EXPLOSION, PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. See the conversion kit index supplied with the furnace.
Install a ground joint union inside the cabinet to easily remove the control valve assembly. Install a manual shut-off valve in the gas line outside the furnace casing. The T-valve should be readily accessible to turn the gas supply on or off. Install a drip leg in the gas supply line as close to the furnace as possible. Always use a pipe compound resistant to the action of liquefied petroleum gases on all threaded connections.
LP CONVERSION FIGURE 40 NOTE: See Page 47 for Canadian High-Altitude Derate TYPICAL LP KIT CONTENTS IMPORTANT: LP gas from trucks used to transport liquid-based fertilizers can contain chemicals that will damage the furnace. Verify that your gas supplier does not use the same trucks to transport materials other than LP. The valve can be converted to use liquified petroleum (LP) gas by replacing the pressure regulator spring with the conversion kit spring.
SETTING GAS PRESSURE The maximum gas supply pressure to the furnace should be 10.5" w.c. natural gas, or 13" w.c. LP gas. The minimum supply gas pressure to the gas valve should be 5⬙ w.c. natural gas or 11⬙ w.c. LP gas. A properly calibrated U-Tube manometer is required for accurate gas pressure measurements. ! CAUTION ELEVATIONS ABOVE 2000 FT REQUIRE THAT THE FURNACE INPUT RATING BE ADJUSTED AND THAT THE SIZE OF THE BURNER ORIFICES BE RECALCULATED BASED ON ELEVATION AND GAS HEATING VALUE.
FIGURE 42 MANIFOLD PRESSURE READING FIGURE 43 UPFLOW GROUNDING CONNECTIONS LOW VOLTAGE TERMINALS JUNCTION BOX CONDENSATE TRAP IFC MOUNTING PLATE BLOWER COMPARTMENT CONTROL IS GROUNDED WHEN ATTACHED TO BLOWER I409-3 40
ELECTRICAL WIRING ! WARNING TURN OFF ELECTRIC POWER AT FUSE BOX OR SERVICE PANEL BEFORE MAKING ANY ELECTRICAL CONNECTIONS. FAILURE TO DO SO CAN CAUSE ELECTRICAL SHOCK RESULTING IN PERSONAL INJURY OR DEATH. ! WARNING THE CABINET MUST HAVE AN UNINTERRUPTED GROUND ACCORDING TO THE LATEST EDITION OF THE NATIONAL ELECTRICAL CODE, ANSI/ NFPA70- OR IN CANADA, THE CANADIAN ELECTRICAL CODE, CSA-C221 OR LOCAL CODES THAT APPLY. DO NOT USE GAS PIPING AS AN ELECTRICAL GROUND.
fireplace, sun rays, lamps, televisions, radios or air streams from registers. Refer to instructions packed with the thermostat for “heater” selection or adjustment. ACCESSORIES FIELD-INSTALLED OPTION ACCESSORIES ELECTRONIC AIR CLEANER Line voltage power can be supplied from the screw terminal “EAC” and a line voltage neutral screw terminal on the control board. This will power the electronic air cleaner whenever the circulating air blower is in operation.
FIGURE 46 UT Electronic Controls 1028-928 CONTROL BOARD, TWINNING CONNECTION -- SINGLE STAGE OPERATION Control Board 1 Control Board 2 43
FIGURE 47 UT ELECTRONIC CONTROLS 1028-928 CONTROL BOARD, TWINNING CONNECTION -- TWO-STAGE OPERATION Control Board 1 Control Board 2 44
ALTERNATE METHOD FOR CANADIAN HIGH-ALTITUDE DERATE In Canada, unless an orifice change is specifically mandated by local codes, an alternate method of altitude deration through a reduction in manifold pressure is acceptable as described in Table 8. The information in Table 8 is based on a heating value of 1000 BTU per cubic feet of natural gas, and 2500 BTU per cubic feet of LP gas.
START-UP PROCEDURES This furnace is equipped with a direct ignition device. Each time the room thermostat calls for heat, the ignitor lights the main burners directly. See the lighting instructions on the furnace. TO START THE FURNACE 1. Remove the burner compartment control access door. 2. IMPORTANT: Be sure that the manual gas control has been in the “OFF” position for at least five minutes. Do not attempt to manually light the main burners. 3.
Sequence if the system doesn’t light or doesn’t sense flame: 1. On a call for heat, the control runs the inducer for 30 seconds to pre-purge. 2. After the 30-second pre-purge, the spark igniter energizes. The inducer continues to run. 3. After the spark igniter energizes, the gas valve opens for an 8second trial for ignition. The inducer continues and the igniter stays energized. 4. If flame is not sensed within 8 seconds after the gas valve opens, the gas valve closes, the igniter de-energizes and: 5.
AIR FLOW The importance of proper air flow over the heat exchanger cannot be over emphasized. ! FIGURE 49 TEMPERATURE RISE MEASUREMENT CAUTION IT IS IMPORTANT THAT EACH DUCT SYSTEM BE SIZED AND INSTALLED FOR THE SPECIFIC APPLICATION BY PROPERLY APPLYING THE APPROPRIATE INDUSTRY ACCEPTED STANDARD.
TABLE 10 90 PLUS AIR FLOW PERFORMANCE – GLUB & GLDB MODELS Model Motor HP [W] Blower Size IN [MM] GLUB45-E3A 1/2 [373] 11 x 7 [279 x 178] GLUB60-E3A 1/2 [373] 11 x 7 [279 x 178] GLUB75-E3A 1/2 [373] 11 x 7 [279 x 178] GLUB75-E4A 1/2 [373] 11 x 10 [279 x 254] GLUB90-E5A 3/4 [559] 12 x 11 [305 x 279] GLUB105-E5A 3/4 [559] 12 x 11 [305 x 279] GLDB45-E3A 1/2 [373] 11 x 7 [279 x 178] GLDB60-E3A 1/2 [373] 11 x 7 [279 x 178] GLDB75-E4A 1/2 [373] 11 x 10 [279 x 254] GLDB90-E5A 3/4 [559] 12 x 1
1. FAN SPEED — motor runs on this speed when the thermostat is in the “FAN ON” position. 2. COOL — connect desired cooling speed. 3. HEAT — connect desired heating speed. 4. HEAT/COOL (not available on UT Electronic Controls-1028-925 control board) or Invensys Climate Controls ICC-H1MC7-01 — connect desired speed when heating and cooling speed are the same. IMPORTANT: Do not connect any motor speeds to “HEAT” and “COOL” if you use the “HEAT/COOL” terminal.
MAINTENANCE TABLE 9 FILTER SIZES ! WARNING UPFLOW FILTER SIZES THESE INSTRUCTIONS ARE INTENDED AS AN AID TO QUALIFIED SERVICE PERSONNEL FOR PROPER INSTALLATION, ADJUSTMENT AND OPERATION OF THIS UNIT. READ THESE INSTRUCTIONS THOROUGHLY BEFORE ATTEMPTING INSTALLATION OR OPERATION.
FIGURE 55 FILTER LOCATIONS UPFLOW JACKET JACKET ANGLE DRILL (2) 3/16" DIA. HOLES JACKET ANGLE DETAIL ATTACH WITH SHEET METAL SCREWS (2 REQÕD) 8.000 4.875 ROD FILTER FILTER ROD SUPPORT SUPPORT ANGLE ANGLE 1.
ENTRAINED IN THE AIR MAY TEMPORARILY LODGE IN THE AIR DUCT RUNS AND AT THE SUPPLY REGISTERS. ANY RECIRCULATED DUST PARTICLES WILL BE HEATED AND CHARRED BY CONTACT WITH THE FURNACE HEAT EXCHANGER. THIS RESIDUE WILL SOIL CEILINGS, WALLS, DRAPES, CARPETS AND OTHER HOUSEHOLD ARTICLES. LUBRICATION IMPORTANT: DO NOT attempt to lubricate the bearings on the blower motor or the induced draft blower motor. Addition of lubricants can reduce the motor life and void the warranty.
FIGURE 56 GLUB/GLDB MODELS W/INTEGRATED FURNACE CONTROL (IFC) UT Electronic Controls 1012-925 (115 VAC IGNITER) INTEGRATED FURNACE CONTROL (IFC) TROUBLESHOOTING GUIDE WARNING HAZARDOUS VOLTAGE LINE VOLTAGE CONNECTIONS NOTE: Most failures are not due to the IFC. Double check all other possibilities, including the ground connection, before replacing the IFC. NOTE: Always verify gas valve inlet and outlet gas pressure.
FIGURE 57 GLUB MODELS WITH UT ELECTRONIC CONTROLS 1028-928 & SPARK IGNITION 55
FIGURE 58 GLDB MODELS WITH UT ELECTRONIC CONTROLS 1028-928 & SPARK IGNITION 56 CM 0909
