INSTALLATION INSTRUCTIONS FOR UPFLOW/HORIZONTAL & DOWNFLOW INDUCED DRAFT GAS FURNACES (-)GPN/(-)GPP UPFLOW/HORIZONTAL SERIES (-)GLN DOWNFLOW SERIES 92-24161-38-03 SUPERSEDES 92-24161-38-02...
Before beginning any troubleshooting procedure, complete the following installation checklist. A furnace malfunction is sometimes caused by an improper installation. By completing this checklist, the problem may be found and corrected. Make copies of the checklist and complete one for every Low Profile Furnace service call for your records. INSTALLATION CHECKLIST (Refer to this manual for specifics.) GAS SUPPLY...
Important: All Rheem products meet CONTENTS current Federal OSHA Guidelines for safety. California Proposition 65 Installation Check List ....................2 warnings are required for certain products, which are not covered by the Safety Information ....................4 OSHA standards. General Information....................5 California's Proposition 65 requires warnings for products sold in California Location Requirements and Considerations ............5...
SAFETY INFORMATION WARNING WARNING WARNING USE ONLY WITH TYPE OF GAS ALWAYS INSTALL FURNACE TO USE OF THIS FURNACE IS APPROVED FOR THIS FURNACE. OPERATE WITHIN THE ALLOWED DURING REFER TO THE FURNACE RATING FURNACE'S INTENDED CONSTRUCTION IF THE PLATE. TEMPERATURE-RISE RANGE FOLLOWING TEMPORARY WITH A DUCT SYSTEM WHICH...
GENERAL INFORMATION The (-)GPN/(-)GPP/(-)GLN series A high AFUE value, which translates for Gas Burning Appliances. Since furnaces are design certified by CSA for into a low operating cost, is not the only furnace technology and venting use with natural and propane gases as concern that consumers have.
CLEARANCE – DUCTING TABLE 1 ACCESSIBILITY FURNACE BASE BASE Proper air flow is required for the WIDTH PLATE NO. PLATE SIZE correct operation of this furnace. Too The design of forced air furnaces with 14” RXGB-D14 x 23 ” ” little air flow can cause erratic input ratings as listed in the tables on ”...
FAILURE TO PREVENT PRODUCTS b. If summer air conditioning is WARNING OF COMBUSTION FROM BEING desired, position the indoor coil on A SOLID METAL BASE PLATE, (SEE CIRCULATED INTO THE LIVING the bottom of the unit. Insure that TABLE 1) MUST BE IN PLACE SPACE CAN CREATE POTENTIALLY no air can bypass this coil.
• Commercial buildings FIGURE 5 • Buildings with indoor pools HORIZONTAL RETURN AIR DUCT • Furnaces installed in laundry rooms (LEFT-HAND AIRFLOW POSITION SHOWN) • Furnaces in hobby or craft rooms • Furnaces installed near chemical storage areas. AIRFLOW Exposure to the following substances in the combustion air supply may also require OUTDOOR AIR for combustion:...
Page 11
Combustion air must be free of acid FIGURE 7 forming chemicals; such as sulphur, AIR FROM ATTIC/CRAWL SPACE fluorine and chlorine. These elements are found in aerosol sprays, detergents, bleaches, cleaning solvents, air fresheners, paint and varnish removers, refrigerants and many other commercial and household products.
Page 12
FIGURE 8 COMBUSTION AIR FITTING – NON-ATTIC COMBUSTION AIR PULL, GPN & GPP ONLY ATTACH OPTIONAL DOUBLE ELBOW TO TOP INLET AIR OPENING TO PREVENT ACCIDENTAL BLOCKAGE OF INTAKE OPENING. THIS IS NOT A REQUIREMENT. (SEE PREVIOUS PAGE.) SINGLE ELBOW IS ALLOWED BUT MAY NOT PREVENT DEBRIS FROM BEING DROPPED INTO THE FURNACE.
Page 13
FIGURE 9 OUTSIDE AIR USING A HORIZONTAL INLET & OUTLET B: Method 3, GPN and GPP only For the optimum in quiet operation, attic air may be brought directly to the furnace. IMPORTANT: In applications using Method 3 for combustion air, the attic If attic combustion air is used, the inlet than 10 feet can result in nuisance must be ventilated by gable or soffit...
VENTING FIGURE 11 ATTACHING TO DRAFT INDUCER COLLAR GENERAL INFORMATION The furnace must be vented in accordance with these instructions, National Fuel Gas Code, ANSI Z223.1 and/or the Natural Gas Installation Code, CSA-B149.1 & .2 and requirements or codes of the local utility or other authority having jurisdiction.
Page 15
“B-1” VERTICAL VENTING FIGURE 12 TYPICAL VENTING WITH “B-1” VENT Type “B-1” vents must be installed in accordance with the terms of their listings and the vent manufacturer’s instructions. “B-1” vents must be supported and spaced in accordance with their listings and the manufacturer’s instructions.
POWER VENT SYSTEMS EXISTING VENT SYSTEMS the common venting system are located. Turn on clothes dryers and IMPORTANT RETROFIT When vertical venting is not possible, any appliance not connected to the VENTING INSTRUCTIONS the only acceptable method for common venting system. Turn on horizontal venting is with the use of any exhaust fans, such as range If this furnace is a replacement...
GAS SUPPLY AND PIPING GAS SUPPLY FIGURE 14 GAS PIPING INSTALLATION WARNING GAS PIPE INSTALLATION THIS FURNACE IS EQUIPPED AT GROMMET (IN NORMAL POSITION) THE FACTORY FOR USE ON UPFLOW & DOWNFLOW MANUAL GAS VALVE NATURAL GAS ONLY. CONVERSION (IN CLOSED POSITION) TO LP GAS REQUIRES A SPECIAL KIT AVAILABLE FROM THE GAS VALVE...
GAS PRESSURE LP CONVERSION NOx MODELS When converting furnaces equipped IMPORTANT: The maximum gas NOTE: For installation, see specific LP with NOx inserts to LP gas, remove the supply pressure to the furnace should kit installation instructions. NOx insert assemblies. Steps for be 10.5”...
SETTING GAS PRESSURE FIGURE 15 The maximum gas supply pressure to TYPICAL HOSE CONNECTION TO LINE PRESSURE TAP 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"...
Page 20
ADJUSTING OR CHECKING LP GAS: Check of input is important to prevent Furnaces for use on LP gas, the LP gas over firing of the furnace beyond its FURNACE INPUT supply pressure must be set between design-rated input. NEVER SET INPUT 11.0”...
ELECTRICAL WIRING FIGURE 16 ISOLATION RELAY WARNING TURN OFF ELECTRIC POWER AT THE FUSE BOX OR SERVICE PANEL BEFORE MAKING ANY ELECTRICAL CONNECTIONS. ALSO, THE GROUND CONNECTION MUST BE COMPLETED BEFORE MAKING LINE VOLTAGE CONNECTIONS. FAILURE TO DO SO CAN RESULT IN ELECTRICAL SHOCK, SEVERE PERSONAL INJURY OR DEATH.
UT ELECTRONIC CONTROLS FIGURE 17 1028-928 CONTROL BOARD LINE VOLTAGE CONNECTIONS 1. Single Stage Operation UT ELECTRONIC CONTROLS 1028-928 CONTROL BOARD (See Figure 16) a. Control board "ONE" is on furnace connected to the thermostat. b. The 24 VAC supply to both control boards must be in phase with each other.
Page 23
FIGURE 18 UT Electronic Controls 1028-928 CONTROL BOARD, TWINNING CONNECTION -- SINGLE STAGE OPERATION a099201...
Orifice Part Number 62-22175-(drill CAUTION in that the NFGC LP orifice chart, as size) THE NATIONAL FUEL GAS CODE they are not accurate for Rheem Example 1: (NFGC) GUIDELINES SHOULD BE products. The National Fuel Gas Code # 60 drill size orifice required FOLLOWED WHEN CONVERTING LP orifices are based on an 11"...
START-UP PROCEDURE LIGHTING INSTRUCTIONS next ignition cycle by energizing WARNING the inducer for a pre-purge of 30 This appliance is equipped with a direct SHOULD OVERHEATING OCCUR OR seconds. After the pre-purge, the spark ignition device. This device lights THE GAS SUPPLY FAIL TO SHUT igniter energizes and the gas valve the main burners each time the room OFF, SHUT OFF THE MANUAL GAS...
Page 28
Our reliability department has identified 1. FAN SPEED* — motor runs on this FIGURE 21 open limits in hot attics to be a potential speed when the thermostat is in the UT Electronic Controls 1028-928 field issue with residential gas furnaces. “FAN”...
AIR FLOW FIGURE 23 TEMPERATURE RISE MEASUREMENT The importance of proper air flow over the heat exchanger cannot be over emphasized. CAUTION IT IS IMPORTANT THAT EACH DUCT SYSTEM BE SIZED AND INSTALLED FOR THE SPECIFIC APPLICATION BY PROPERLY APPLYING THE APPROPRIATE INDUSTRY ACCEPTED STANDARD.
SAFETY FEATURES LIMIT CONTROL FLAME ROLL-OUT PRESSURE SWITCH SAFETY SWITCHES The high limit cut-off temperature is set This furnace is equipped with a at the factory and cannot be adjusted. normally-open pressure switch that Furnaces are equipped with safety The temperature setting prevents the monitors pressure conditions within the switches to protect against flame roll- air temperature leaving the furnace...
MAINTENANCE TABLE 9 FILTER SIZES UPFLOW FILTER SIZES AS SHIPPED WARNING FURNACE INPUT BOTTOM SIDE QUANTITY WIDTH BTUH SIZE SIZE DISCONNECT MAIN ELECTRICAL " X 25" " X 25" POWER TO THE UNIT BEFORE *NOTE: Some filters must be " 75 &...
Page 34
FIGURE 26 UPFLOW FILTER RETAINING ROD (SIDE RETURN) FILTER 45-24095-01 FILTER ROD SUPPORT ANGLE AE-60520-01 FILTER SUPPORT ANGLE AE-61883-01 FILTER AND ROD ASSEMBLY CUT-OUT AND DRILL DETAIL FILTER ROD SUPPORT ANGLE AE-60520-01 FILTER SUPPORT ANGLE (SEE ANGLE DETAIL) AE-61883-01 ROD & FILTER SUPPORT ANGLE ASSEMBLY SOLID BOTTOM MAY BE ORDERED FROM THE FACTORY.
SYSTEM OPERATION FUMES TO ENTER THE HOME LUBRICATION RESULTING IN CARBON INFORMATION The indoor blower motor and induced MONOXIDE POISONING OR DEATH. draft motor are prelubricated by the THE VENT PIPE OR HEAT Advise The Customer To: motor manufacturer and do not require EXCHANGER MUST BE REPLACED 1.
FIGURE 29 TROUBLESHOOTING FLOWCHART INTEGRATED FURNACE CONTROL (IFC) WARNING TROUBLESHOOTING GUIDE HAZARDOUS VOLTAGE DISCONNECT POWER BEFORE SERVICING. NOTE: Most failures are not due to the IFC. Double check all other LINE VOLTAGE SERVICE MUST BE BY A TRAINED, QUALIFIED CONNECTIONS possibilities, including the ground connection, before replacing the IFC.
Page 37
FIGURE 30 FOR MODELS WITH UT ELECTRONIC CONTROLS 1028-928 INTEGRATED FURNACE CONTROL AND DIRECT SPARK IGNITION...
Page 38
FIGURE 31 FOR MODELS WITH UT ELECTRONIC CONTROLS 1027-200 INTEGRATED FURNACE CONTROL AND DIRECT SPARK IGNITION...