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INSTALLATION INSTRUCTIONS
FOR UPFLOW/HORIZONTAL SINGLE STAGE GAS
FURNACES WITH CONSTANT-TORQUE AIR CIRCULATION
BLOWER
(-)801T UPFLOW/
HORIZONTAL SERIES
(-)801C UPFLOW/
HORIZONTAL SERIES
(-)(-)80MSX UPFLOW/
HORIZONTAL SERIES
(-)(-)80MSC UPFLOW/
HORIZONTAL SERIES
ST-A1220-01-X0
ACCREDITED
92-24161-144-11
SUPERSEDES 92-24161-144-10
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Table of Contents
Related Manuals for Rheem 801T Series
Summary of Contents for Rheem 801T Series
- Page 1 INSTALLATION INSTRUCTIONS FOR UPFLOW/HORIZONTAL SINGLE STAGE GAS FURNACES WITH CONSTANT-TORQUE AIR CIRCULATION BLOWER (-)801T UPFLOW/ HORIZONTAL SERIES (-)801C UPFLOW/ HORIZONTAL SERIES (-)(-)80MSX UPFLOW/ HORIZONTAL SERIES (-)(-)80MSC UPFLOW/ HORIZONTAL SERIES ST-A1220-01-X0 ACCREDITED 92-24161-144-11 SUPERSEDES 92-24161-144-10...
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Page 2: Table Of Contents
TABLE OF CONTENTS 1 TABLE OF CONTENTS . . . . . . . . . . . . . . . . . . . . . . 2 11 TWINNING . -
Page 3: General Information
GENERAL INFORMATION NOTE: A heat loss calculation should be performed to properly The 80% single stage constant torque series furnaces are design determine the required furnace BTU size for the structure . Also, certified by CSA for use with natural and propane gases as follows: the duct must be properly designed and installed for proper air- As a Category I furnace, it may be vented vertically with type flow . -
Page 4: Receiving
GENERAL INFORMATION (cont .) MATERIAL INFORMATION Install this furnace in accordance with the American National Standard Z223 .1 – latest edition entitled “National Fuel Gas Code” All manufacturer products meet current Federal OSHA Guide- (NFPA54) and requirements or codes of the local utilities or other lines for safety . -
Page 5: Checklist
Installation Instructions remain with the furnace as a reference guide to the servicing contractor. We recommend that performance and installation data be recorded for future reference on this sheet to meet service and war- ranty obligations so that job site information is available when required. Installation Checklist REFER TO INSTALLATION INSTRUCTIONS GAS SUPPLY... -
Page 6: Safety Information
SAFETY INFORMATION WARNING WARNING DO NOT INSTALL THIS FURNACE IN A MOBILE HOME!! COMBUSTION AND VENTILATION AIR MUST BE PRO- THIS FURNACE IS NOT APPROVED FOR INSTALLATION VIDED TO THE FURNACE AS REQUIRED BY THE IN A MOBILE HOME . DOING SO COULD CAUSE FIRE, NATIONAL FUEL-GAS CODE (U .S .) AND CSA B149 .1 (CANADA) AND THE COMBUSTION AND VENTILATION PROPERTY DAMAGE, PERSONAL INJURY OR DEATH . -
Page 7: Important Information About Efficiency And Quality
SAFETY WARNING WARNING BLOWER AND BURNERS MUST NEVER BE OPERATED DUCT LEAKS CAN CREATE AN UNBALANCED SYSTEM WITHOUT THE BLOWER DOOR IN PLACE . THIS IS TO AND DRAW POLLUTANTS SUCH AS DIRT, DUST, FUMES PREVENT DRAWING GAS FUMES (WHICH COULD CON- AND ODORS INTO THE HOME CAUSING PROPERTY TAIN HAZARDOUS CARBON MONOXIDE) INTO THE DAMAGE . -
Page 8: Location Requirements
LOCATION REQUIREMENTS GENERAL INFORMATION WARNING WARNING WHEN THIS FURNACE IS INSTALLED IN A RESIDENTIAL THIS FURNACE IS NOT APPROVED OR RECOMMENDED GARAGE, IT MUST BE INSTALLED SO THE BURNERS FOR INSTALLATION ON ITS BACK, WITH ACCESS AND IGNITION SOURCE ARE LOCATED NO LESS THAN DOORS FACING UPWARDS . -
Page 9: Upflow Dimensions And Clearance Table
LOCATION REQUIREMENTS GENERAL INFORMATION (cont .) WARNING WARNING UPFLOW AND HORIZONTAL FURNACES ARE DE- COMBUSTIBLE MATERIAL MUST NOT BE PLACED SIGN-CERTIFIED FOR INSTALLATION ON COMBUSTIBLE ON OR AGAINST THE FURNACE JACKET . THE AREA FLOORS . NOTE, HOWEVER, THAT FURNACES MUST AROUND THE FURNACE MUST BE KEPT CLEAR AND NOT BE INSTALLED DIRECTLY ON CARPETING, TILE OR FREE OF ALL COMBUSTIBLE MATERIALS INCLUDING... - Page 10 FIGURE 4 UPFLOW/HORIZONTAL DIMENSIONS...
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Page 11: Ducting
DUCTING UPFLOW INSTALLATIONS Proper air flow is required for the correct operation of this furnace . Restricted air flow can cause erratic operation 1 . Position the unit to minimize long runs of duct or runs and can damage the heat exchanger . The duct system of duct with many turns and elbows . - Page 12 DUCTING FIGURE 5 NOTE: NOTE: SOLID BASE PLATE PROVIDED WITH 80% SOLID BASE PLATE PROVIDED WITH (-)801P SINGLE STAGE CONSTANT TORQUE MODELS ONLY. MODELS ONLY . WHEN SOLID BASE PLATE IS USED . TAPE WHEN SOLID BASE PLATE IS USED, TAPE AROUND BOTTOM FLANGES OF CABINET AROUND BOTTOM FLANGES OF CABINET BE- BEFORE THE UNIT IS INSTALLED.
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Page 13: Horizontal Units
DUCTING HORIZONTAL UNITS FIGURE 9 HORIZONTAL RETURN AIR DUCT 1 . Position the unit to minimize long runs of duct or runs of (LEFT-HAND AIRFLOW POSITION SHOWN) duct with many turns and elbows . 2 . Unit can be mounted left or right side airflow configura- tion . -
Page 14: Combustion And Ventilation Air
COMBUSTION AND VENTILATION AIR COMBUSTION AIR REQUIREMENTS • Halogen type refrigerants IMPORTANT: This is not a direct vent furnace. Review venting • Cleaning solvents (such as perchloroethylene) instructions before installing. • Printing inks, paint removers, varnishes, etc . • Hydrochloric acid WARNING •... - Page 15 COMBUSTION AND VENTILATION AIR (cont .) COMBUSTION AIR REQUIREMENTS: CONFINED AND UNCONFINED SPACES FURNACE LOCATED IN A CONFINED WARNING SPACE ALL FURNACE INSTALLATIONS MUST COMPLY WITH A confined space is defined as any space for a given furnace THE NATIONAL FUEL GAS CODE, NFPA 54 AND LOCAL input rating which is smaller than that which is specified in Table CODES TO PROVIDE ADEQUATE COMBUSTION AND 1 as minimum for an “unconfined”...
- Page 16 COMBUSTION AND VENTILATION AIR (cont .) TABLE 9 : MINIMUM FREE AREA REQUIRED FOR EACH OPENING (WHEN TWO OPENINGS COMBUSTION AIR REQUIREMENTS: CONFINED AND ARE USED) WITH A FURNACE: UNCONFINED SPACES 1. LOCATED IN A CONFINED SPACE 2. USING OUTDOOR AIR FOR COMBUSTION TABLE 9 : MINIMUM FREE AREA REQUIRED 3.
- Page 17 COMBUSTION AND VENTILATION AIR (cont .) COMBUSTION AIR REQUIREMENTS: CONFINED AND UNCONFINED SPACES FIGURE 8 FIGURE 7 OUTSIDE AIR USING A HORIZONTAL INLET & OUTLET AIR FROM ATTIC/CRAWL SPACE FIGURE 12 FIGURE 11 VENT PENETRATIONS VENT PENETRATIONS NON-DIRECT VENT for non direct vent furnaces NON-DIRECT VENT for non direct vent furnaces OUTSIDE AIR...
- Page 18 COMBUSTION AND VENTILATION AIR (cont .) It is also acceptable to run the condensate drain (or refrig- CAUTION erant) line access over the air intake hole as long as a 1” minimum clearance is maintained . COMBUSTION AIR INTAKES CANNOT BE TERMINATED Combustion air openings must not be restricted in any manner .
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Page 19: Venting
COMBUSTION AND VENTILATION AIR (cont .) VENTING GENERAL INFORMATION IMPORTANT APPLICATION NOTES When the furnace is used as a replacement, the existing vent The furnace must be vented in accordance with these instruc- system should be inspected to assure that there are no obstruc- tions, National Fuel Gas Code, ANSI Z223 .1 and requirements tions, blockage, or any signs of corrosion and is properly sized or codes of the local utility or other authority having jurisdiction . -
Page 20: Special Vent Systems (Svs)
COMBUSTION AND VENTILATION AIR (cont .) VERTICAL VENT SYSTEMS: Single appliance venting of a fan assisted furnace into a tile- 1 . A gas vent shall terminate above the roof surface with a listed lined masonry chimney is prohibited . The chimney must be lined cap or listed roof assembly . - Page 21 COMBUSTION AND VENTILATION AIR (cont .) FIGURE 17 1. STANDARD 3” FLUE CONNECTION. 2. 4” ADAPTER - OPTIONAL SEE NATIONAL FUEL GAS CODE FOR SIZING OPTIONS FRESH AIR INLET ST-A1220-09-01 ST-A1220-09 FIGURE 18 DEDICATED VENTING THROUGH CHIMNEY WITH “B-1” VENT...
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Page 22: Power Vent Systems
COMBUSTION AND VENTILATION AIR (cont .) POWER VENT SYSTEMS 1 . Visually inspect the venting system for proper size and hori- zontal pitch and determine that there is no blockage, restric- When vertical venting is not possible, the only acceptable tion, leakage, corrosion or other deficiencies which could method for horizontal venting is with the use of Tjernlund model cause an unsafe condition . -
Page 23: Gas Supply
GAS SUPPLY GAS SUPPLY AND PIPING IMPORTANT SAFETY INFORMATION AIR AND WILL RISE, POSSIBLY ACCUMULATING IN HIGHER PORTIONS OF THE STRUCTURE . NATURAL GAS AND PROPANE • IF A GAS LEAK IS PRESENT OR SUSPECTED: (LIQUEFIED PETROLEUM GAS / LPG) - DO NOT ATTEMPT TO FIND THE CAUSE YOUR- SAFETY SELF . -
Page 24: Gas Piping
GAS SUPPLY GAS PIPING IMPORTANT: When making gas pipe connections, use a WARNING back-up wrench to prevent any twisting of the control assembly and gas valve. Do not overtighten the connection. THIS FURNACE IS EQUIPPED AT THE FACTORY Any strains on the gas valve can change the position of the gas FOR USE ON NATURAL GAS ONLY . -
Page 25: Gas Pressure
GAS SUPPLY (cont .) GAS PRESSURE IMPORTANT: ENSURE that the furnace gas valve is not to be FIGURE 20B subjected to high gas line supply pressures . WHITE RODGERS GAS VALVE DISCONNECT the furnace and its individual manual gas stop from the gas supply piping during any pressure testing that exceeds 1/2 PSIG . -
Page 26: Setting Gas Pressure
GAS SUPPLY (cont .) SETTING GAS PRESSURE CAUTION The maximum gas supply pressure to the furnace must ELEVATIONS ABOVE 2000 FT . REQUIRE THAT THE FUR- not exceed 10.5” w.c. natural gas, or 13” w.c. LP gas. The NACE INPUT RATING BE ADJUSTED AND THAT THE minimum supply gas pressure to the gas valve should be 59 w .c . -
Page 27: Lp Conversion
LP CONVERSION GAS PRESSURE NOTE: The valve can be converted to use liquified petro- 4 . Turn the gas supply back on and check for proper op- leum (LP) gas by replacing the pressure regulator spring eration and manifold pressure . with the conversion kit spring . -
Page 28: Electrical Wiring
ELECTRICAL WIRING ELECTRICAL WIRING These may be obtained from: WARNING National Fire Protection Association, Inc . Batterymarch Park TURN OFF ELECTRIC POWER AT FUSE BOX OR Quincy, MA 02269 SERVICE PANEL BEFORE MAKING ANY ELEC- DOOR SWITCH REMOVAL INSTRUCTIONS TRICAL CONNECTIONS . FAILURE TO DO SO CAN CAUSE ELECTRICAL SHOCK RESULTING IN PER- FIGURE 22 SONAL INJURY OR DEATH . -
Page 29: Thermostat
ELECTRICAL WIRING REVERSING ELECTRICAL CONNECTION & THERMOSTAT 7 . Using a flat screwdriver, squeeze the retaining arms on the NOTE: Do not use 24 volt control wiring smaller than No . 18 door switch and gently pry the door switch from it’s opening. AWG . -
Page 30: Accessories
ACCESSORIES FIELD INSTALLED OPTIONAL ACCESSORIES ELECTRONIC AIR CLEANER FILTERS (See Figure 27) Line voltage power can be supplied from the terminal labeled Keep filters clean at all times . A filter is not provided with the “EAC” and a line voltage neutral terminal on the control board . furnace, but one must be field-supplied and installed . -
Page 31: Figure 27
ACCESSORIES FIELD INSTALLED OPTION ACCESSORIES (cont .) FIGURE 27 FILTER LOCATIONS FLANGE WRAPS AROUND BACK AND SCREWS TO THE REAR OF THE FURNCE, AT THE LOCATIONS PROVIDED CUT OUT USING EMBOSSED ANGLES AS A GUIDE FOR PROPER SIZE 23” X 14” FIELD SUPPLIED FILTER RXGF-CD ACCESSORY FILTER RACK... -
Page 32: Twinning
TWINNING FURNACE TWINNING INSTALLATIONS UT ELECTRONIC CONTROLS Twinning operation of two furnaces, installed side-by-side, con- nected by a common duct system with main power supplied by 1194-250 CONTROL BOARD the same source, and controlled by a common thermostat can (62-104058-02) be done with the UT Electronic Controls 1194-250 integrated control boards . - Page 33 TWINNING UT ELECTRONIC CONTROLS 1194-250 CONTROL BOARD, TWINNING CONNECTION -- SINGLE PHASE OPERATION CONTROL BOARDS THERMOSTAT ST-A1220-25-00 NOTE: A FAULT CODE 20 WILL FLASH TO...
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Page 34: Control Boards
TWINNING UT ELECTRONIC CONTROLS 1194-250 CONTROL BOARD, TWINNING CONNECTION -- TWO PHASE OPERATION CONTROL BOARDS (cont .) ST-A1220-26-00 THERMOSTAT... -
Page 35: High Altitude
HIGH ALTITUDE NATURAL GAS AT HIGH ALTITUDES Orifice required at Sea Level: #40 WARNING From Table E1 .1d of National Fuel Gas Code, 2015. Orifice re- quired at 5000 ft . elevation (4% de-rate per thousand ft): #42 INSTALLATION OF THIS FURNACE AT ALTITUDES ABOVE Orifice required at 8000 ft . - Page 36 HIGH ALTITUDE NATURAL GAS AT HIGH ALTITUDES (cont .) TABLE 8 SUPPLEMENTAL ORIFICE SIZE CHART NATURAL GAS ORIFICE SELECTION BASED ON HEATING VALUE & ELEVATION* NATURAL GAS ORIFICE SELECTION BASED ON HEATING VALUE & ELEVATION* NATURAL GAS ORIFICE SELECTION BASED ON HEATING VALUE & ELEVATION* Notes: Notes: Notes:...
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Page 37: Lp Gas At High Altitudes
HIGH ALTITUDE LP GAS AT HIGH ALTITUDES LP GAS (TABLE 9) are based on an 11” of water column pressure at the orifice, which differs from products that use 10” of water column at the NOTE: Keep any parts removed during LP conversion procedure orifice . -
Page 38: Startup Procedures
START-UP PROCEDURES SEQUENCE OF OPERATIONS SEQUENCE OF OPERATION This furnace is equipped with a direct ignition control . Each time the room thermostat calls for heat, the ignitor lights the main UT ELECTRONIC CONTROLS burners directly . See the lighting instructions on the furnace . Integrated Controls with Direct Spark Ignition . -
Page 39: Diagnostics And Fault Codes
FAULT CODES FAULT CODES DIAGNOSTICS AND FAULT CODES Sequence of display: A . The first two-digit fault will be displayed once as described All furnace controls come standard with a 7-segment diagnostic above . display . During standby mode with no fault codes present, the B . -
Page 40: Lockout
1-STAGE LOCKOUT LOCKOUT All lockout conditions can be cleared immediately provided that Three conditions shall cause a hard lockout: the original fault causing the lockout is cleared and power to the 1. The control senses an unspecified internal fault. Fault code unit is cycled off and then back on again or (soft lockout only) if “93”... -
Page 41: Field Selections & Adjustments
FIELD SELECTIONS & ADJUSTMENTS FIELD SELECTIONS –– DIPSWITCHES A dipswitch bank; SW1 is provided for some field adjustments . Heating blower off delay, cooling (and heat-pump) blower off 90 seconds delay, display (7-Segment) orientation and fault clear are the (Factory Setting) adjustments and functions that can be handled using the dip- 120 seconds switches . -
Page 42: Fault Clear
TIMING DIAGRAM, FIELD SELECTIONS & ADJUSTMENTS FAULT CLEAR MANUAL FAULT CLEAR; SW4 within 30 seconds . When this action is detected within 30 sec- onds, the fault code memory buffer shall be cleared . Be sure Faults will automatically be cleared from the fault buffer after to return the dipswitch to the original state (on or off) or is in the one week . -
Page 43: Adjusting Or Checking Furnace Input
TIMING DIAGRAM, FIELD SELECTIONS & ADJUSTMENTS TABLE 10 TIMING DIAGRAM CLOSED OPEN OPEN ST-A1194-27-X0 ADJUSTING OR CHECKING FURNACE INPUT The maximum gas supply pressure to the furnace should be To change orifice spuds, shut off the manual gas valve and re- 10 .5”... -
Page 44: Setting Input Rate
TIMING DIAGRAM, FIELD SELECTIONS & ADJUSTMENTS TABLE 11 METER TIME METER TIME IN MINUTES AND SECONDS FOR NORMAL INPUT RATING OF FURNACES EQUIPPED FOR NATURAL GAS OR L .P . HEATING VALUE OF GAS (BTU/FT INPUT METER SIZE 1000 1040 1100 2500 (BTU/HR) -
Page 45: Airflow
AIRFLOW The importance of proper air flow over the heat exchanger cannot FIGURE 31 be over emphasized . 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 . -
Page 46: Blower Speed Selection
TABLE 12 AIR FLOW PERFORMANCE – (-)801T/(-)801C, (-)80MSX/(-)80MSC, FF(-)TS80(-)/FF(-)CS80(-) - SERIES MODELS CFM AIR DELIVERY EXTERNAL STATIC PRESSURE in INCHES OF W.C. Input (Btu) Cabinet Width (in) AIRFLOW CONTROL SPEED TAP SETTINGS CIRC FAN HEAT OR HEAT/COOL MED. LO COOL MEDIUM 1117 1081... -
Page 47: Safety Features
SAFETY FEATURES LIMIT CONTROL/HALC PRESSURE SWITCH The high limit cut-off temperature is set at the factory and This furnace is equipped with a normally-open pressure switch cannot be adjusted . The temperature setting prevents the air that monitors pressure conditions within the furnace vent system temperature leaving the furnace from exceeding the maximum during the heating cycle . -
Page 48: Maintenance
MAINTENANCE MAINTENANCE WARNING THESE INSTRUCTIONS ARE INTENDED AS AN AID TO IN FIRE, ELECTRICAL SHOCK, CARBON MONOXIDE QUALIFIED SERVICE PERSONNEL FOR PROPER IN- POISONING, EXPLOSION, PROPERTY DAMAGE, PER- STALLATION, ADJUSTMENT AND OPERATION OF THIS SONAL INJURY OR DEATH . UNIT . READ THESE INSTRUCTIONS THOROUGHLY BE- DISCONNECT MAIN ELECTRICAL POWER TO THE FORE ATTEMPTING INSTALLATION OR OPERATION . -
Page 49: System Operation Information
RESULTING IN CARBON MONOXIDE POISONING OR DEATH . THE VENT PIPE OR HEAT EXCHANGER MUST BE REPLACED IF THEY LEAK . REPLACEMENT PARTS Homeowners please visit www .rheem .com for product Replacement parts division visit information . http://www .rheemparts .com/Catalog/ DIAGNOSTICS Refer to Figure 33 for determining cause of unit problems . -
Page 50: Troubleshooting
FIGURE 33 INTEGRATED FURNACE CONTROL DIAGNOSTICS FLOWCHART TROUBLESHOOTING GUIDE CODE DESCRIPTION KEY TO ABBREVIATIONS NOTE: Always verify gas valve inlet and outlet gas Standby IBM = Indoor Blower Motor FLAME (AMBER) LED CODES pressure . IDM = Induced Draft Motor Compressor on (cooling or heat pump heat) OFF = No Flame Presen t IFC = Integrated Furnace Control... - Page 51 FIGURE 34 FOR MODELS WITH UT ELECTRONIC CONTROLS 1194-200 INTEGRATED FURNACE CONTROL AND DIRECT SPARK IGNITION...
- Page 52 CM 0917...