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INSTALLATION INSTRUCTIONS
FOR INDUCED DRAFT GAS FURNACES
80PS UPFLOW/HORIZONTAL SERIES
80LS DOWNFLOW SERIES
Upflow Models
Model Number
Input (Btu)
80PS05EAR**
80PS05NAR**
80PS07EBR**
80PS07NBR**
80PS07EER**
80PS07NER**
80PS10EBR**
100,000
80PS10ECR**
100,000
80PS10EDR**
100,000
80PS10NDR**
100,000
80PS12EDR**
125,000
80PS15EDR**
150,000
Tons
50,000
3
50,000
3
75,000
3
75,000
3
75,000
4
75,000
4
3
4.5
5
5
5
5
Downflow Models
Model Number
80LS05EAR**
80LS07EBR**
80LS07EAR**
80LS10EBR**
80LS10ECR**
80LS10EDR**
80LS12EDR**
80LS15EDR**
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.
Input (Btu)
Tons
50,000
3
75,000
4
75,000
3
100,000
3
100,000
5
100,000
5
125,000
5
150,000
5
92-24161-61-01
SUPERSEDES 92-24161-61-00
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Summary of Contents for Rheem 80PS Series
- Page 1 INSTALLATION INSTRUCTIONS FOR INDUCED DRAFT GAS FURNACES 80PS UPFLOW/HORIZONTAL SERIES 80LS DOWNFLOW SERIES Upflow Models Downflow Models Model Number Input (Btu) Tons Model Number Input (Btu) Tons 80PS05EAR** 50,000 80LS05EAR** 50,000 80PS05NAR** 50,000 80LS07EBR** 75,000 80PS07EBR** 75,000 80LS07EAR** 75,000 80PS07NBR** 75,000 80LS10EBR** 100,000...
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Page 2: Installation Checklist
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... -
Page 3: Table Of Contents
Important: All manufacturer products CONTENTS meet 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 ....................8 California's Proposition 65 requires warnings for products sold in California Location Requirements and Considerations ............9 that contain, or produce, any of over... -
Page 4: Safety Information
SAFETY INFORMATION WARNING WARNING WARNING IF THE INFORMATION IN THESE — Do not store or use gasoline or other COMBUSTION PRODUCTS MUST INSTRUCTIONS IS NOT flammable vapors and liquids, or BE DISCHARGED OUTDOORS. FOLLOWED EXACTLY, A FIRE OR other combustible materials in the CONNECT THIS FURNACE TO AN EXPLOSION MAY RESULT, vicinity of this or any other appliance. - Page 5 WARNING WARNING WARNING DUCT LEAKS CAN CREATE AN DOWNFLOW UNIT DESIGN IS WHEN THIS FURNACE IS UNBALANCED SYSTEM AND DRAW CERTIFIED FOR INSTALLATION ON INSTALLED IN A RESIDENTIAL POLLUTANTS SUCH AS DIRT, NON-COMBUSTIBLE FLOOR. A GARAGE, IT MUST BE INSTALLED SPECIAL COMBUSTIBLE FLOOR DUST, FUMES AND ODORS INTO SO THE BURNERS AND IGNITION...
- Page 6 WARNING WARNING WARNING THE DOWNFLOW FURNACE DEVICES ATTACHED TO THE FLUE NEVER ALLOW PRODUCTS OF DESIGN IS CERTIFIED FOR OR VENT FOR THE PURPOSE OF COMBUSTION OR THE FLUE INSTALLATION ON A NON- REDUCING HEAT LOSS UP THE PRODUCTS TO ENTER THE COMBUSTIBLE FLOOR.
- Page 7 WARNING WARNING CAUTION DO NOT CONNECT THIS FURNACE IT IS IMPORTANT THAT EACH DUCT THE CABINET MUST BE TO A CHIMNEY USED TO VENT A SYSTEM BE SIZED AND INSTALLED PERMANENTLY GROUNDED. A SOLID FUEL APPLIANCE (WOOD OR FOR THE SPECIFIC APPLICATION BY GROUND SCREW IS PROVIDED IN COAL).
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Page 8: General Information
GENERAL INFORMATION The 80% gas furnaces are design NOTE: Always perform a proper heat Installation of Air Conditioning and certified by CSA for use with natural and loss calculation before specifying the Ventilating Systems 1985 or latest propane gases as follows: furnace size. -
Page 9: Location Requirements And Considerations
• IF AIR-MOVING EQUIPMENT OR LOCATED IN ANY AREA OF A opening. Caulking is required to STRUCTURE WHERE DAMAGE TO prevent air leakage into and DUCTWORK IS LOCATED IN THE BUILDING OR BUILDING condensate from forming inside the SPACES CONTAINING FUEL CONTENTS MAY OCCUR AS A unit, control box, and on electrical BURNING APPLIANCES SUCH AS... - Page 10 FIGURE 3 UPFLOW/HORIZONTAL DIMENSIONS...
- Page 11 FIGURE 4 DOWNFLOW DIMENSIONS...
- Page 12 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 ”...
- Page 13 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.
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Page 14: Combustion And Ventilation Air
• Commercial buildings FIGURE 6 • 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 15 Combustion air must be free of acid FIGURE 8 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 16 FIGURE 9 COMBUSTION AIR FITTING – NON-ATTIC COMBUSTION AIR PULL, UPFLOW/HORIZONTAL MODELS 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 17 FIGURE 10 OUTSIDE AIR USING A HORIZONTAL INLET & OUTLET B: Method 3, Upflow/Horizontal models 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 NOTE: Maximum length of pipe that must be ventilated by gable or soffit...
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Page 18: Vent Pipe Installation
VENTING FIGURE 12 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 19 “B-1” VERTICAL VENTING FIGURE 13 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.
- Page 20 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...
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Page 21: Gas Supply And Piping
GAS SUPPLY AND PIPING GAS SUPPLY FIGURE 15 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... - Page 22 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”...
- Page 23 SETTING GAS PRESSURE FIGURE 16 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 24 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 ABOVE THAT SHOWN ON THE 11.0”...
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Page 25: Electrical Wiring
ELECTRICAL WIRING FIGURE 17 ISOLATION RELAY NOTE: Electric to furnace must be supplied by a commercial utility. Proper voltage is 110-125 volts. 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. -
Page 26: Accessories
UT ELECTRONIC CONTROLS FIGURE 18 1028-928 CONTROL BOARD LINE VOLTAGE CONNECTIONS 1. Single Stage Operation UT ELECTRONIC CONTROLS 1097-200 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 27: High Altitude Installations
Orifice required at 5000 ft. elevation in that the NFGC LP orifice chart, as CAUTION (4% de-rate per thousand ft.): #45 they are not accurate for Rheem Orifice required at 8000 ft elevation (4% INSTALLATION OF THIS FURNACE products. The National Fuel Gas Code... - Page 28 ORIFICE ORDERING ALTERNATE METHOD FOR INFORMATION CANADIAN HIGH-ALTITUDE DERATE Orifice sizes are selected by adding the 2-digit drill size required in the orifice In Canada, unless an orifice change is part number. Drill sizes available are 39 specifically mandated by local codes, through 64;...
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Page 30: Start-Up Procedure
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 31 SETTING BLOWER TIMINGS GAS FURNACE (DIRECT FIGURE 20 DRIVE) INSTRUCTIONS FOR UT Electronic Controls 1097-200 *NOTE: These taps are not available on CHANGING BLOWER SPEED BLOWER OFF TIMINGS UT Electronic Controls 1097-200. NOTE: This does not apply to UT WARNING Electronic Controls 1097-200 models because the heat tap functions as the DISCONNECT THE ELECTRICAL...
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Page 32: Air Flow
AIR FLOW FIGURE 21 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. -
Page 33: Blower Performance Data
BLOWER PERFORMANCE DATA – UPFLOW/HORIZONTAL MODELS CFM [L/s] AIR DELIVERY BLOWER MOTOR BLOWER EXTERNAL STATIC PRESSURE INCHES [kPa] WATER COLUMN TONS INPUT SIZE H.P. SPEED [mm] .1 [.02] .2 [.05] .3 [.07] .4 [.10] .5 [.12] .6 [.15] .7 [.17] 675 [319] 655 [309] 635 [300]... -
Page 34: Safety Features
SAFETY FEATURES LIMIT CONTROL ROLL-OUT SAFETY PRESSURE SWITCH 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 roll-out air temperature leaving the furnace... -
Page 35: Maintenance
MAINTENANCE TABLE 10 FILTER SIZES *NOTE: Some filters UPFLOW FILTER SIZES AS SHIPPED must be ordered or WARNING PART FURNACE INPUT BOTTOM SIDE resized to fit certain QUANTITY WIDTH BTUH SIZE SIZE units and DISCONNECT MAIN ELECTRICAL applications. 54-24094-01 " X 25" "... - Page 36 FIGURE 24 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.
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Page 37: Wiring Diagram
SYSTEM OPERATION LUBRICATION WARNING INFORMATION HOLES IN THE VENT PIPE OR HEAT The indoor blower motor and induced EXCHANGER CAN CAUSE TOXIC draft motor are prelubricated by the Advise The Customer To: FUMES TO ENTER THE HOME motor manufacturer and do not require 1. -
Page 38: Troubleshooting
FIGURE 27 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 39 FIGURE 28 FOR MODELS WITH UT ELECTRONIC CONTROLS 1027-200 INTEGRATED FURNACE CONTROL AND DIRECT SPARK IGNITION...
- Page 40 CM 0707...
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