Rheem 96P series Installation Instructions Manual

4 position condensing two-stage psc gas furnaces
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INSTALLATION INSTRUCTIONS

FOR 4 POSITION CONDENSING TWO-STAGE,
PSC GAS FURNACES
(-)96P SERIES
& (-)(-)96MDP SERIES
92-24161-122-11
SUPERSEDES 92-24161-122-10

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Summary of Contents for Rheem 96P series

  • Page 1: Installation Instructions

    INSTALLATION INSTRUCTIONS FOR 4 POSITION CONDENSING TWO-STAGE, PSC GAS FURNACES (-)96P SERIES & (-)(-)96MDP SERIES 92-24161-122-11 SUPERSEDES 92-24161-122-10...
  • Page 2: Table Of Contents

    TABLE OF CONTENTS 1 TABLE OF CONTENTS ..... . 2 Optional Termination Angles for Alt. Horizontal and Variant of Alt. Horizontal 2 GENERAL INFORMATION .
  • Page 3: General Information

    GENERAL INFORMATION NOTE: A heat loss calculation should be performed to 1. As non-direct vent central forced air furnaces taking properly determine the required furnace BTU size for the combustion air from the installation area or using air structure. Also, the duct must be properly designed and in- ducted from the outside.
  • Page 4: Receiving

    GENERAL INFORMATION (cont.) In Canada installations must comply with CSA B149.1. CALIFORNIA RESIDENTS ONLY Install units in Canada in accordance with CSA-B149, local IMPORTANT: All manufacturer products meet current Fed- installation codes and authorities having jurisdiction. CSA- eral OSHA Guidelines for safety. California Proposition 65 B149.1 is available from: warnings are required for certain products, which are not covered by the OSHA standards.
  • 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 warranty obligations so that job site information is available when required. Installation Checklist ______ ft.
  • 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 NA- IN A MOBILE HOME. DOING SO COULD CAUSE FIRE, TIONAL FUEL-GAS CODE (U.S.) AND CSA B149.1 PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
  • Page 7: Important Information About Efficiency And Quality

    SAFETY WARNING WARNING ALWAYS INSTALL THE FURNACE TO OPERATE WITHIN DUCT LEAKS CAN CREATE AN UNBALANCED SYSTEM THE FURNACE’S INTENDED TEMPERATURE-RISE AND DRAW POLLUTANTS SUCH AS DIRT, DUST, FUMES RANGE WITH A DUCT SYSTEM WHICH HAS AN EXTER- AND ODORS INTO THE HOME CAUSING PROPERTY NAL STATIC PRESSURE WITHIN THE ALLOWABLE DAMAGE.
  • Page 8: Commonwealth Of Massachusetts Note

    COMMONWEALTH OF MASSACHUSETTS NOTE IMPORTANT! THE COMMONWEALTH OF MASSACHU- 4. INSPECTION. The state or local gas inspector of the SETTS REQUIRES COMPLIANCE WITH REGULATION side wall horizontally vented gas fueled equipment shall 248 CMR 4.00 AND 5.00 FOR INSTALLATION OF not approve the installation unless, upon inspection, the in- THROUGH-THE-WALL VENTED GAS APPLIANCES AS spector observes carbon monoxide detectors and signage...
  • Page 9: Location Requirements

    LOCATION REQUIREMENTS GENERAL INFORMATION any exposed drain piping must be protected from freezing WARNING as required by local practices or codes. A UL or CSA listed heat tape or UL or CSA approved heating cable with a rat- WHEN THIS FURNACE IS INSTALLED IN A RESI- ing of 3-6 watts per foot is acceptable protection when in- DENTIAL GARAGE, IT MUST BE INSTALLED SO stalled and maintained in accordance with the...
  • Page 10: Site Selection

    LOCATION REQUIREMENTS GENERAL INFORMATION (cont.) WARNING WARNING THIS FURNACE IS NOT APPROVED OR RECOM- COMBUSTIBLE MATERIAL MUST NOT BE PLACED ON OR AGAINST THE FURNACE JACKET. THE MENDED FOR INSTALLATION ON ITS BACK, WITH AREA AROUND THE FURNACE MUST BE KEPT ACCESS DOORS FACING UPWARDS.
  • Page 11: Clearance Table

    FIGURE 6 UNIT DIMENSIONS (CLEARANCE TO COMBUSTIBLES)
  • Page 12: Field Conversion

    FIELD CONVERSIONS GENERAL CONVERSION INSTRUCTIONS CONDENSATE PVC/HOSE OPTIONS CONVERSION AND INSTALLATION CONSIDERATIONS BULKHEAD COUPLING CONDENSATE DRAINIAGE HAS OPTIONS FOR 3/4" OR 1/2" ALL CONVERSIONS REQUIRE THE CONDENSATE PLUMBING TO PVC CONNECTIONS. THE BULKHEAD COUPLING CONNECTS THE HAVE DECLINE IN THE DIRECTION OF THE WATER FLOW. RUBBER HOSES FROM INSIDE THE UNIT TO THE PVC PIPE EXTERIOR OF THE UNIT.
  • Page 13: Lists Of Materials For Parts Bag And Conversion Kits

    FIELD CONVERSIONS GENERAL PARTS REQUIRED FOR CONVERSIONS PARTS BAG (PROVIDED WITH UNIT) (X2) (X2) (X3) 2" PVC VANE INTAKE BULKHEAD #8 X 1/2" INTAKE AIR HOSE CLAMP 1/4" HOLE COUPLING DIFFUSER COUPLING PLUG SCREW TUBE C HOSE DOUBLE ELBOW CONVERSION KIT RXGY-CK (X4) 2"...
  • Page 14: Conversion Table Of Contents

    FIELD CONVERSIONS FIELD CONVERSION TO VARIOUS CONFIGURATIONS Furnaces can be converted in the field from upflow (as-shipped) to downflow, horizontal left or horizontal right as necessary. In addition, there are different venting options, including a zero-clearance option, to give the installer flexibility in locating the venting for this furnace.
  • Page 15: Upflow With Vertical Vent

    UPFLOW VERTICAL VENT INSTALL PARTS NEEDED: PARTS NEEDED FOR THIS CONVERSION REQUIRE ITEMS FROM THE PARTS BAG ONLY. NO OTHER CONVERSION KITS ARE NEEDED. FROM PARTS BAG (PROVIDED WITH UNIT) TUBE C HOSE - DOUBLE ELBOW BULKHEAD INTAKE HOSE #8 X 1/2" COUPLING COUPLING CLAMP...
  • Page 16 Checklist: __ VERIFY ALL HOSES ARE SECURE AND FULLY SEATED. __ CONFIRM THAT ALL HOSES ARE FREE OF KINKS __ CONFIRM ALL HOSES AND OTHER DRAIN PARTS HAVE A SLOPE IN DIRECTION OF WATER FLOW __ ALL CLAMPS AND COUPLINGS ARE TIGHTENED __ ALL DRAIN PORTS ARE PLUGGED __ UNIT HAS FORWARD PITCH __ HEAT TAPE INSTALLED(IF REQUIRED)
  • Page 17: Upflow With Left Side Vent

    UPFLOW LEFT VENT PARTS NEEDED: FROM PARTS BAG (PROVIDED W/UNIT) FROM CONVERSION KIT RXGY-CK PARTS NEEDED FOR THIS CONVERSION REQUIRE THE (X2) OUTLINED ITEMS FROM THE PARTS BAG (X3) AND CONVERSION KIT RXGY-CK. YOU BULKHEAD HOSE INTAKE #8 X 1/2" MUST HAVE THESE PARTS BEFORE COUPLING CLAMP...
  • Page 18 TUBE C CUT TO FIT CABINET WIDTH HOSE A HOSE - DOUBLE ELBOW (X3) HOSE A TUBE C 5b - RIGHT SIDE DRAIN OPTION 5b1 - CUT TUBE “C” TO FIT CORRESPONDING CABINET WIDTH. 5b2 - INSERT TUBE “C” INTO END “2” OF HOSE- DOUBLE ELBOW 5a - LEFT SIDE DRAIN OPTION 5b3 - SLIDE TWO WIRE CLAMPS OVER TUBE “C”, SLIDE ONE WIRE CLAMP OVER END “1”...
  • Page 19 OWNFLOW W/ RIGHT VENT (N NON-ZERO CLEARANCE) PARTS NEEDED FOR THIS CONVERSION RE EQUIRE ITEMS FROM THE PARTS BAG AND CONVERSION K KIT RXGY-CK. YOU MUST HAVE THE PARTS OUTLINED BE LOW BEFORE PROCEEDING. PARTS NEED PARTS NEEDED: HOSE - FROM PARTS BAG (PROVIDED WITH UNIT) WITH UNIT) DOUBLE...
  • Page 20 INSTALL INSERT AIR DIFFUSER UNTIL TABS ARE FULLY SEATED .559 DRAIN PLUG DISCARD NOTE: DIFFUSER MAY HAVE A TENDENCEY TO FALL OUT OF THE COUPLING AT THIS STEP. THE INSTALLER MAY ELECT TO INSTALL THE DIFFUSER AFTER ROTATING THE FURNACE TO THE HORIZONTAL POSITION.
  • Page 21 NOTE: REMAINING STEPS SHOWN WITH FURNACE IN DOWN FLOW ORIENTATION SEE CRITICAL HOSE CLAMP LOCATION NOTE APPROXIMATELY 10-20° TILT IN THE GENERAL COVERSION INSTRUCTIONS. ON INDUCER COUPLING 1/4” TUBE CUT TO FIT (APPROX 10-1/2”) HOSE E HOSE D GROUND 10° ROTATE INDUCER COUPLING TO ENSURE DOWNWARD FLOW OF CONDENSATE FROM FLUE VENTING...
  • Page 22 Checklist: __ VERIFY ALL HOSES ARE SECURE AND FULLY SEATED. __ ALL DRAIN PORTS ARE PLUGGED __ UNIT HAS FORWARD PITCH __ HEAT TAPE INSTALLED(IF REQUIRED) __ CONFIRM THAT ALL HOSES ARE FREE OF KINKS __ CONFIRM ALL HOSES AND OTHER DRAIN PARTS HAVE A SLOPE IN DIRECTION OF WATER FLOW __ BOTH WORM DRIVES ON THE HOSE CLAMPS OF THE IDB COUPLING MUST BE LOCATED ON THE TOP OF THE COUPLING.
  • Page 23: Downflow With Right Vent (Non Zero Clearance) 19-22 Downflow Zero-Clearance

    DOWN FLOW ZERO CLEAR RANCE PARTS NEEDED FO OR THIS CONVERSION REQUIRE ITEMS FROM THE PARTS S BAG, CONVERSION KIT RXGY-CK AND RXGY-ZK. YOU MUST HAVE T THE OUTLINED PARTS FROM THESE KITS BEFORE PROCEEDING. PARTS NEEDED: ROM PARTS BAG(PROVIDED W/UNIT) (X3) (X2) INTAKE...
  • Page 24 NOTE: F THE IDB COUPLING IS REMOVED, IT MUST BE REPLACED IN THE PROPER ORIENTATION. AN ARROW IS PRESENT ON THE COUPLING TO INDICATE THE DIREC- TION OF EXHAUST FLOW. MAKE SURE THE ARROW POINTS IN THE CORRECT DIRECTION. 4a - RE-INSTALL ELBO OW AND COUPLINGS (REMOVED IN S TEP 1) IN THE INSTALL HOSE E ON COLLECTO...
  • Page 25 1/8" DRILL 1/8" DRILL DISCARD 7/8" PLUG DISCARD 7/8" PLUG LEFT DRAIN OPTION RIGHT DRAIN OPTION DETERMINE RIGHT OR LEFT DRAIN OPTION. LOCATE 7/8" HOLE IN JACKET SIDE REMOVE PLUG - DISCARD. DRILL (2) 1/8" HOLES FOR THE BULKHEAD COUPLING. INSTALL BULKHEAD COUPLING USING (2) SCREWS.
  • Page 26 APPROXIMATLY 10 0-20° TILT SEE CRITICAL HOSE CLAMP 1/4” TUBE CUT LOCATION NOTE IN THE ON INDUCER COU UPLING TO FIT (APPROX GENERAL CONVERSION 10-1/2”) INSTRUCTIONS. HOSE D GROUND 0° ROTATE INDUCER CO UPLING TO ENSURE HOSE E DOWNWARD FLOW OF F CONDENSATE FROM FLUE VENTING 11a - ROTATE INDUCER COUPL...
  • Page 27 Checklist: __ VERIFY ALL HOSES ARE SECURE AND FULLY SEATED. __ CONFIRM THAT ALL HOSES ARE FREE OF KINKS. __ CONFIRM ALL HOSES AND OTHER DRAIN PARTS HAVE A SLOPE IN DIRECTION OF WATER FLOW. __ BOTH WORM DRIVES ON THE HOSE CLAMPS OF THE IDB COUPLING MUST BE LOCATED ON THE TOP OF THE COUPLING.
  • Page 28 HORIZONTAL RIGHT / RIGHT VENT AIRFLOW PARTS NEEDED FOR THIS CONVERSION REQUIRE ITEMS PARTS NEEDED FOR THIS CONVERSION REQUIRE ITEMS FROM THE PARTS BAG AND CONVERSION KIT RXGY-CK. FROM THE PARTS BAG AND CONVERSION KIT RXGY-CK. YOU MUST HAVE THE PARTS OUTLINED BELOW BEFORE PROCEEDING. YOU MUST HAVE THE PARTS OUTLINED BELOW BEFORE PROCEEDING.
  • Page 29: Horizontal Right With Right Vent

    INSTALL CONDENSATE TRAP 3a - REMOVE RECTANGLE FLUSH MOUNT PLUG FROM JACKET SIDE-DISCARD 3b - PRE-DRILL (3) Ø 1/8" HOLES AS SHOWN FOR CONDENSATE TRAP !! IMPORTANT !! CONDENSATE TRAP INFORMATION RECTANGLE PLUG JACKET DISCARD DRILL (3) Ø1/8" HOLES INSTALL CONDENSATE TRAP DISCARD INSTALL HOSE A...
  • Page 30 Checklist: __ VERIFY ALL HOSES ARE SECURE AND FULLY SEATED. __ CONFIRM THAT ALL HOSES ARE FREE OF KINKS. __ CONFIRM ALL HOSES AND OTHER DRAIN PARTS HAVE A SLOPE IN DIRECTION OF WATER FLOW. __ BOTH WORM DRIVES ON THE HOSE CLAMPS OF THE FLUE TRANSITION MUST BE LOCATED ON THE TOP OF THE COUPLING.
  • Page 31: Horizontal Right With Vertical Vent

    HORIZONTAL RIGHT / VE ERTICAL VENT AIRFL PARTS NEEDE ED FOR THIS CONVERSION REQUIRE ITEMS FROM THE PA RTS BAG AND CONVERSION KIT RXGY-CK YOU MUST HA AVE THE PARTS OUTLINED BELOW BEFORE PARTS NEEDED: PROCEEDING. FROM PARTS BAG (PROVIDED WITH UNIT) INTAKE INTAKE AIR COUPLING...
  • Page 32 4a - REMOVE RECTANGLE FLUSH MOUNT PLUG FROM JACKET SIDE - DISCARD 3a - RELOCATE THE Ø .403" DRAIN PLUG IN THE COLLECTOR BOX. 4b - PRE-DRILL (3) Ø1/8" HOLES AS SHOWN FOR CONDENSATE TRAP 3b - RELOCATE 1/4" VINYL CAP (YELLOW) ON COLLECTOR BOX VENT TAP. 4c - INSTALL 2"...
  • Page 33 NOTE: REMAINING STEPS SHOWN WITH FURNACE IN HORIZONTAL RIGHT ORIENTATION 6a - ROTATE UNIT 90° 6b - CUT 1/4" VENT HOSE TO FIT (APPROX. 5-1/2") AND INSTALL AS SHOWN ROTATE 6c - CUT HOSE E AT LINE 1- INSTALL UNIT 90° NOTE: MAKE SURE CUT IS STRAIGHT AND SQUARE 6d - CUT HOSE F ON LINE CORRESPONDING TO UNIT WIDTH AND INSTALL NOTE: 17.5": LINE 1, 21": LINE 2, 24.5": DO NOT CUT...
  • Page 39: Horizontal Left With Left Vent

    HORIZONTAL LEFT / LEFT VENT AIRFL PARTS NEEDED: FROM PARTS BAG(PROVIDED WITH UNIT) PARTS NEEDED FOR THIS CONVERSION REQUIRE ITEMS FROM THE PARTS BAG AND CONVERSION KIT RXGY-CK. YOU MUST HAVE THE PARTS OUTLINED BELOW BEFORE PROCEEDING. INTAKE COUPLING W/NUT FROM CONVERSION KIT RXGY-CK RXGY-CK (X3)
  • Page 40 NOTE: TO PREVENT DAMAGE TO THE TRAP, THE INSTALLER MAY ELECT TO INSTALL IT DURING A LATER STEP. (AFTER THE UNIT IS ROTATED) 4a - REMOVE METAL BRACKET AND.403" DRAIN PLUG - DISCARD. 4b - REMOVE HOSE “A” - DISCARD 4c - INSTALL Ø.559"...
  • Page 41 Checklist: __ VERIFY ALL HOSES ARE SECURE AND FULLY SEATED. __ CONFIRM THAT ALL HOSES ARE FREE OF KINKS. __ CONFIRM ALL HOSES AND OTHER DRAIN PARTS HAVE A SLOPE IN DIRECTION OF WATER FLOW. __ BOTH WORM DRIVES ON THE HOSE CLAMPS OF THE FLUE TRANSITION MUST BE LOCATED ON THE TOP OF THE COUPLING.
  • Page 42: Ducting

    DUCTING External filter racks are available from the distributor. Use FIGURE 7 the following part numbers when ordering: REMOVE SOLID BASE PANEL FROM THE RXGF-CA External Side Filter Rack Kit TOP BEFORE INSTALLING FURNACE RXGF-CB External Bottom Filter Rack Kit RXGF-CC External Filter Rack Kit - Downflow IF EQUIPPED,...
  • Page 43: Horizontal Installations

    DUCTING WARNING WARNING UPFLOW FURNACE: THE SOLID METAL BASE PLATE A DOWNFLOW INSTALLATION IS CERTIFIED FOR IN- (SHIPPED WITH THE FURNACE) MUST BE INSTALLED STALLATION ON A NON-COMBUSTIBLE FLOOR. USE IN THE FURNACE BOTTOM WHEN USING SIDE AIR RE- THE SPECIAL BASE SPECIFIED ON THE FURNACE TURN.
  • Page 44 DUCTING 2. If summer air conditioning is desired, position the in- door coil on the supply air side of the unit. Ensure that FIGURE 10 no air can bypass this coil. 3. Connect the furnace to the supply air plenum. 4.
  • Page 45: Venting

    GENERAL VENTING REQUIREMENTS AND GUIDELINES VENTING & COMBUSTION AIR REQUIREMENTS The following types of installations (but not limited to the following) may require outdoor air for combustion (direct- vent) due to chemical exposures: Commercial buildings Buildings with indoor pools Furnaces installed in laundry rooms Furnaces in hobby or craft rooms Furnaces installed near chemical storage areas...
  • Page 46: Piping Requirements

    IN CANADA, PRODUCTS CERTIFIED FOR INSTALLA- TION AND INTENDED TO BE VENTED WITH PLASTIC VENT SYSTEMS (PVC, CVPC & POLYPROPYLENE) MUST USE VENT SYSTEMS THAT ARE CERTIFIED TO THE STANDARD FOR TYPE BH GAS VENTING SYS- TEMS, ULC S636. THE COMPONENTS OF THE CERTIFIED MATERIAL MUST NOT BE INTERCHANGED WITH OTHER VENT SYSTEMS OR UNLISTED PIPE/FITTINGS.
  • Page 47: Cementing Joints

    GENERAL VENTING REQUIREMENTS AND GUIDELINES VENTING & COMBUSTION AIR REQUIREMENTS (cont.) wrap the vent pipe with self-regulating 3 watt or 6 watt heat tape. The heat tape must be U.L. listed and in- stalled per the manufacturer’s instructions. NOTE: Never cover heat tape with insulation. 5.
  • Page 48: Vent Pipe Sizing And Maximum Lengths

    %   $  ) $5225<= @:3 AB5?163<2 3<=29 =:H $   2  /: *  9%H F $  2  ./D. *  =:H F $  2  % *  FIGURE 12 ELBOWS STANDARD 90°...
  • Page 49: General Venting Requirements And Guidelines

    GENERAL VENTING REQUIREMENTS AND GUIDELINES VENT PIPE SIZING AND MAXIMUM VENT LENGTHS (cont.) TABLE 4: MAXIMUM EQUIVALENT VENTY LENGTH (TABLE IS FOR BOTH DIRECT & NON­DIRECT VENTING) Recommended Input Maximum Equivalent Pipe Size Maximum Number (BTU/H) Length (Feet) of Elbows 2 inchØ...
  • Page 50: Polypropylene Vent Products

    VENT PIPE SIZING AND MAXIMUM VENT LENGTHS (cont.) POLYPROPYLENE VENT PRODUCTS and 6 below. These manufacturers have provisions for B- vent liners and chimney liners which can be used with this Centrotherm brand Innoflue and Duravent Polypro Single- furnace with non-direct venting applications only. Refer to wall and flex venting products are approved for use on this the manufacturer’s installation instructions for proper in- furnace product only in single appliance applications.
  • Page 51: Termination Requirements

    GENERAL VENTING REQUIREMENTS AND GUIDELINES 2. Locate the furnace combustion air inlet away from the vent of any other gas or fuel-burning appliance or clothes dryer to prevent recirculation of the flue gases into the furnace combustion air inlet. For exact dis- tances based on BTU of appliances refer to National Fuel Gas Code or CSA B149.1 in Canada.
  • Page 52: Non-Direct Venting In An Unconfined Space

    TABLE 7: MINIMUM SPACE REQUIREMENTS  !% FOR UNCONFINED SPACE, NON-DIRECT VENT ALL FURNACE INSTALLATIONS MUST COMPLY WITH THE NATIONAL FUEL GAS CODE, NFPA 54, AND IN CANADA CSA B149.1; CANADIAN NATURAL GAS AND 5 < > B> 5 < >...
  • Page 53 GENERAL VENTING REQUIREMENTS AND GUIDELINES NON-DIRECT VENT (cont.) B. USING OUTDOOR AIR FOR COMBUSTION: directly, or by ducts, with the outdoors or spaces (crawl or attic) that freely communicate with the outdoors. IMPORTANT: Do not take air from an attic space that is A.
  • Page 54 FIGURE 14 FIGURE 15 NON-DIRECT VENT NON-DIRECT VENT AIR FROM ATTIC OR CRAWL OUTSIDE AIR USING A SPACE HORIZONTAL DUCT OUTLET AIR 1 SQ. IN. (6.5 SQ. CM.) PER 2000 BTUH INLET AIR 1 SQ. IN. (6.5 SQ. CM.) PER 2000 BTUH ST-A1194-19 ST-A1194-19 FIG E...
  • Page 55: Non-Direct Venting

    GENERAL VENTING REQUIREMENTS AND GUIDELINES NON-DIRECT VENT (cont.) (crawl or attic) that freely communicate with the outdoors, and shall have a minimum of: A. 1 Square inch for each 3,000 BTUH of the total input rat- ALL VENT INSTALLED THROUGH UNCONDI- ing of all equipment located in the enclosure TIONED SPACE WHERE BELOW-FREEZING TEM- PERATURES ARE EXPECTED SHOULD BE...
  • Page 56 OPTION 3: ALTERNATE HORIZONTAL TERMINATION Figure 19 shows the alternate non-direct vent horizontal termination with minimum clearances. FIGURE 19 ALTERNATE HORIZONTAL NON-DIRECT VENT TERMINAL VENT MAY BE ROTATED AS MUCH AS 45° LEFT OR RIGHT FROM VERTICAL AS LONG AS TIP PORTION RE- MAINS VERTICAL.
  • Page 57: Non-Direct Venting Termination Clearances

    GENERAL VENTING REQUIREMENTS AND GUIDELINES NON-DIRECT VENT TERMINATION CLEARANCES Figure 21 shows minimum clearances that must be used for non-direct venting terminations. FIGURE 21 VENT TERMINATION CLEARANCES FOR NON-DIRECT VENT INSTALLATIONS INSIDE CORNER DETAIL Fixed Operable Fixed Closed Closed Operable AREA WHERE TERMINAL AIR SUPPLY INLET VENT TERMINAL...
  • Page 58: Direct Venting

    DIRECT-VENT (2-PIPE) INSTALLATIONS ALL FURNACE INSTALLATIONS MUST COMPLY The field-supplied vent system used for direct-vent installa- WITH THE NATIONAL FUEL GAS CODE OR, IN tions uses 2 pipes; one inlet pipe for supplying the com- CANADA, CSA B149.1; NATURAL GAS AND bustion air to the furnace, and an exhaust (or flue) pipe for PROPANE INSTALLATION CODE.
  • Page 59 GENERAL VENTING REQUIREMENTS AND GUIDELINES DIRECT VENT (cont.) Figure 23 below shows the necessary detail for the roof penetration on a standard direct-vent vertical termination. FIGURE 23 DIRECT VENT VERTICAL TERMINATION DETAIL Terminations more than 24” above roof penetration re- quire additional support.
  • Page 60: Option 2: Standard Horizontal Direct Vent Termination

    OPTION 2: STANDARD HORIZONTAL DIRECT-VENT TERMINATION FIGURE 24 STANDARD HORIZONTAL DIRECT VENTING SEE DETAIL B FOR DIMENSION BETWEEN INTAKE AND EXHAUST SEE DETAIL A COUPLINGS: REQUIRED ON EXTERIOR, OPTIONAL ON INTERIOR 1) SUPPORT HORIZONTAL PIPE EVERY FOUR FEET. 2) WHEN 3” PIPE IS USED REDUCE TO 2” BEFORE NOTE: This detail PENETRATING OUTSIDE WALL.
  • Page 61: Option 4: Alternate Horizontal Direct Vent Termination

    GENERAL VENTING REQUIREMENTS AND GUIDELINES DIRECT VENT (cont.) OPTION 4: ALTERNATE HORIZONTAL DIRECT-VENT TERMINATION NOTE: FIGURE 26 A TRAP MUST BE IN- STALLED IN THIS OPTION TYPICAL HORIZONTAL VENTED 2 PIPE TERMINALS TO PREVENT WATER FROM ENTERING THE FURNACE NOTE: THROUGH THE COMBUS- 1) FOR EXHAUST / INTAKE PENETRATION TION AIR PIPE.
  • Page 62: Horizontal And Variant Of Alt. Horizontal Direct-Vent Terminations (Options 4 And 5)

    OPTIONAL TERMINATION ANGLES FOR OPTION FOR ALT. HORIZ. AND VARIANT OF ALT. HORIZ. DIRECT-VENT TERMINATIONS (OPTIONS 4 &5) NOTE: These optional termination angles apply only to di- 4. Mark the final (22° or 45°) angles on the top of the ver- rect-vent termination options 4 and 5 above (alternate hori- tical risers and final elbows before gluing into place to zontal and variant of optional horizontal) in this section.
  • Page 63: Rxgy-E03A)

    GENERAL VENTING REQUIREMENTS AND GUIDELINES DIRECT VENT (cont.) OPTIONS 6 & 7: VERTICAL OR HORIZONTAL CONCENTRIC VENT TERMINATION FOR 2” PIPE: RXGY-EO2 (U.S. ONLY) OR RXGY-EO2A (U.S. AND CANADA) FOR 3” PIPE: RXGY-EO3 (U.S. ONLY) OR RXGY-EO3A (U.S. AND CANADA) CONCENTRIC TERMINATIONS 3”...
  • Page 64 OPTIONS 8 & 9: 2 & 3 SIDE WALL VENT TERMINATIONS FOR 2 PIPE: RXGY-G02 FOR 3 PIPE: RXGY-G01 This termination is for horizontal venting only. This termi- NOTE: With this option a trap on the inlet combustion nation may be installed with either a non-direct-vent or a air pipe is NOT required.
  • Page 65: Direct Venting Termination Clearances

    GENERAL VENTING REQUIREMENTS AND GUIDELINES DIRECT VENT TERMINATION CLEARANCES Figure 32 shows minimum clearances that must be used for direct venting terminations. FIGURE 32 DIRECT VENT TERMINAL CLEARANCES INSIDE CORNER DETAIL Fixed Operable Fixed Closed Closed Operable AREA WHERE TERMINAL AIR SUPPLY INLET VENT TERMINAL IS NOT PERMITTED...
  • Page 66: Multiventing Of Direct Vent Furnaces

    Figures 33 & 34: NOTE: WHEN VENTING MULTIPLE FURNACES IN CLOSE PROXIMITY, EACH FURNACE MUST BE INDIVIDUALLY VENTED – NO COMMON VENTING IS PERMITTED. See Figures 33 & 34 for positioning of the termina- tions. When more than two furnaces are to be vented, there must be at least 3 feet between the first two furnaces and the third and etc.
  • Page 67: Condensate Drain And Drain Neutralizer

    CONDENSATE DRAIN CONDENSATE DRAIN & DRAIN NEUTRALIZER B. FURNACE SHUTOFF – When the top of the vent tube is GENERAL INFORMATION above the elevation of the LOWER condensate water level sensor (aka electronic water level sensor), the furnace will be shut off in the event of a blocked drain and no heat will be provided.
  • Page 68 CONDENSATE DRAIN CONDENSATE DRAIN & DRAIN NEUTRALIZER (cont.)
  • Page 69: Gas Supply And Piping

    GAS SUPPLY GAS SUPPLY AND PIPING IMPORTANT SAFETY INFORMATION 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 70: Gas Piping

    MANUAL SHUT-OF VALVE FIGURE 36 GAS PIPING INSTALLATION THIS FURNACE IS EQUIPPED AT THE FACTORY UPFLOW FOR USE ON NATURAL GAS ONLY. CONVERSION TO LP GAS REQUIRES A SPECIAL KIT IS AVAIL- UNION ABLE AT THE DISTRIBUTOR. FAILURE TO USE THE PROPER CONVERSION KIT CAN CAUSE FIRE, CARBON MONOXIDE POISONING, EXPLOSION, PROPERTY DAMAGE, PERSONAL INJURY OR...
  • Page 71 FIGURE 36 – continued GAS PIPING INSTALLATION DOWNFLOW MANUAL SHUT-OF VALVE UNION DRIP LEG *(2) STREET ELBOWS *For Canadian Installations CSST can be used instead of (2) street elbows. ST-A1205-03-01 (CONTINUED ON NEXT PAGE)
  • Page 72 FIGURE 36 – continued GAS PIPING INSTALLATION HORIZONTAL MANUAL SHUT-OF VALVE MANUAL SHUT-OF VALVE UNION UNION DRIP LEG *(2) STREET ELBOWS *(2) STREET ELBOWS UNION UNION DRIP LEG DRIP LEG MANUAL SHUT-OF VALVE MANUAL SHUT-OF VALVE ST-A1205-04-01 * FOR CANADIAN INSTALLATIONS CSST CAN BE USED INSTEAD OF (2) STREET ELBOWS.
  • Page 73: Gas Pressure

    GAS SUPPLY GAS PRESSURE IMPORTANT: Do not run a flexible gas connector inside FIGURE 37 the furnace. The gas pipe gasket in the cabinet does not TYPICAL GAS VALVE (WHITE RODGERS) seal around a flexible gas line. OUTLET PRESSURE TAP If local codes allow the use of a flexible gas appliance con- HIGH-FIRE MANIFOLD...
  • Page 74: Lp Conversion

    LP TANKS FROM LOCAL LP SUPPLIER MUST NOT BE USED TO STORE ANYTHING (SUCH AS FERTIL- IZER) EXCEPT LP GAS. THIS INCLUDES ALL DELIV- ERY VESSELS (LP TRUCKS). IF MATERIAL OTHER THAN LP GAS IS USED IN THE SAME VESSELS/ TANK AS THE LP GAS, THE LP GAS CAN BECOME CONTAMINATED AND DAMAGE THE FURNACE.
  • Page 75: Setting The Gas Pressure

    GAS PRESSURE GAS PRESSURE SETTING GAS PRESSURE The maximum gas supply pressure to the furnace ELEVATIONS ABOVE 2000 FT. REQUIRE THAT THE must not exceed 10.5" w.c. natural gas, or 13" w.c. LP FURNACE INPUT RATING BE ADJUSTED AND gas. The minimum supply gas pressure to the gas valve THAT THE SIZE OF THE BURNER ORIFICES BE RE- should be 5 w.c.
  • Page 76: Reversing The Electrical Connection

    TURN OFF ELECTRIC POWER AT FUSE BOX OR SERVICE PANEL BEFORE MAKING ANY ELECTRI- CAL CONNECTIONS. FAILURE TO DO SO CAN CAUSE ELECTRICAL SHOCK RESULTING IN PER- FIGURE 39 SONAL INJURY OR DEATH. DOOR SWITCH REMOVAL INSTRUCTIONS THE CABINET MUST HAVE AN UNINTERRUPTED GROUND ACCORDING TO THE LATEST EDITION OF THE NATIONAL ELECTRICAL CODE, ANSI/NFPA70- OR IN CANADA, THE CANADIAN...
  • Page 77: Electrical Wiring

    ELECTRICAL WIRING REVERSING ELECTRICAL CONNECTION & THERMOSTAT 5. Move the junction box to the opposite side of the cabi- Install the room thermostat in accordance with the instruc- net. Install using the two screws removed in step 3 tion sheet packed in the box with the thermostat. Run the above.
  • Page 78: Accessories

    ELECTRONIC AIR CLEANER FILTERS (See Figure 43) Line voltage power can be supplied from the terminal la- Keep filters clean at all times. A filter is not provided beled “EAC” and a line voltage neutral terminal on the con- with the furnace, but one must be field-supplied and trol board.
  • Page 79 FIGURE 43 UPFLOW/HORIZONTAL FILTER LOCATIONS RXGF-CB RXGF-CB ACCESSORT FILTER RACK ACCESSORY FILTER RACK FIELD SUPPLIED FILTER FIELD SUPPLIED FILTER ST-A1194-10-X0 SIDE RETURN 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”...
  • Page 80: Twinning

    Twinning operation of two furnaces, installed side-by-side, UT ELECTRONIC CONTROLS 1095- connected by a common duct system with main power 300 CONTROL BOARD supplied by the same source, and controlled by a common (62-104059-01) thermostat can be done with the UT Electronic Controls 1194-200 integrated control boards.
  • Page 84: High Altitude

    No high altitude pressure switch changes are required; Example: only a 4% derate per 1,000 ft. at altitudes above 2,000 feet Use the formula below to calculate the amount of gas used above sea level. per hour based on the Regional Heating Value of 900BTU/ft I / H = Q Where:...
  • Page 85 TABLE 14 SUPPLEMENTAL ORIFICE SIZE CHART Notes: 1. All 92%, 95% single stage and 96% two stage units are factory equipped with orifices sized for 1100 sea level heating value gas. 2. Installer must be aware of the local heating value (sea level standard) to use the chart below. 3.
  • Page 86: Lp Gas At High Altitudes

    ORIFICE INSTALLATION Example 2: 1.10 mm drill size orifice required LP Gas is a manufactured gas that has consistent heating Part # 62-22175-90 value across most regions. The NFGC guidelines are used with the following excep- ALTERNATE METHOD OF tion: CANADIAN HIGH-ALTITUDE The recommended LP Gas high altitude orifice selections DERATE...
  • Page 87: Startup Procedure

    This furnace is equipped with a direct ignition control. Each SEQUENCE OF OPERATION time the room thermostat calls for heat, the ignitor lights UT ELECTRONIC CONTROLS the main burners directly. See the lighting instructions on the furnace. Integrated Controls with Direct Spark Ignition. UT ELECTRONIC CONTROLS Integrated Controls TO START THE FURNACE with Direct Spark Ignition.
  • Page 88: Diagnostics And Fault Codes

    DIAGNOSTICS AND FAULT CODES TABLE 17 90P 2 STAGE FAULT CODE LIST All furnace controls come standard with a 7 segment diag- Fault nostic display. During standby mode with no fault codes CODE Description Priority present, the display will read “0” (zero). During normal STANDBY COMPRESSOR ON (COOLING OR HEAT-PUMP HEAT) thermostat heating, cooling or continuous fan operations a...
  • Page 89 TABLE 20 90P 2 STAGE FAULT CODES WITH DESCRIPTIONS AND SOLUTIONS ONE-HOUR LOCKOUT STATUS: This is a critical fault. The furnace will not operate in gas heat modes but all other modes (e.g. cooling) should function. DESCRIPTION: This fault is displayed under the following conditions: 1.
  • Page 90 TABLE 20 (continued) 90P 2 STAGE FAULT CODES WITH DESCRIPTIONS AND SOLUTIONS FAILED IGNITION STATUS: Up to three failed ignitions will not constitute a critical condition. Critical condition (with no heating operation) is only noted when the furnace has failed to ignite four or more times consecutively. After four failed ignition attempts, the IFC enters one-hour lockout and the dual faults "11"...
  • Page 91 TABLE 20 (continued) 90P 2 STAGE FAULT CODES WITH DESCRIPTIONS AND SOLUTIONS FLAME LOST AFTER ESTABLISHED STATUS: Flame loss is not a critical fault. Subsequent ignition attempts will follow and normal operation should resume. However, a lost flame can often be followed by failed ignition attempts then a one-hour lockout. Once the status has reached one-hour lockout, the fault condition is critical (although attempts at ignition will be made again after the 1 hour lockout).
  • Page 92 TABLE 20 (continued) 90P 2 STAGE FAULT CODES WITH DESCRIPTIONS AND SOLUTIONS TWINNING FAULT STATUS: This is a critical fault. The furnace neither furnace will not operate with this fault present. DESCRIPTION: Twinning is the operation of two furnaces, installed side by side, connected by a common duct system with main power supplied by the same source and is controlled by a common thermostat This fault indicates wiring for twinning is mis- wired.
  • Page 93 TABLE 20 (continued) 90P 2 STAGE FAULT CODES WITH DESCRIPTIONS AND SOLUTIONS LINE AND NEUTRAL REVERSED OR POOR GROUND STATUS: This is a critical fault. The furnace will not operate in gas heat or any other modes. DESCRIPTION: This fault code is an indication that line voltage and neutral are reversed to the furnace control or may also be an indication of a grounding issue.
  • Page 94 TABLE 20 (continued) 90P 2 STAGE FAULT CODES WITH DESCRIPTIONS AND SOLUTIONS LOW PRESSURE SWITCH CLOSED, INDUCER OFF STATUS: This is a critical fault. The furnace will not operate in gas heat modes but all other modes (e.g. cooling) should function if present simultaneously with a heating call (e.g.
  • Page 95 TABLE 20 (continued) 90P 2 STAGE FAULT CODES WITH DESCRIPTIONS AND SOLUTIONS LOW PRESSURE SWITCH OPEN, INDUCER ON LOW SPEED STATUS: This is a critical fault. The furnace will not operate in gas heat modes but all other modes (e.g. cooling) should function if present simultaneously with a heating call (e.g.
  • Page 96 TABLE 20 (continued) 90P 2 STAGE FAULT CODES WITH DESCRIPTIONS AND SOLUTIONS HIGH PRESSURE SWITCH OPEN, INDUCER ON HIGH SPEED STATUS: This is a critical fault. The furnace will not operate in gas heat modes but all other modes (e.g. cooling) should function if present simultaneously with a heating call (e.g.
  • Page 97 TABLE 20 (continued) 90P 2 STAGE FAULT CODES WITH DESCRIPTIONS AND SOLUTIONS WATER CIRCUIT OPEN STATUS: This is a critical fault experienced by the furnace. The furnace will not operate in gas heat modes but all other modes (e.g. cooling) should function if a call is present. DESCRIPTION: The IFC cannot detect electrical continuity between pins 1 and 2 of connector P4 of the furnace control.
  • Page 98 TABLE 20 (continued) 90P 2 STAGE FAULT CODES WITH DESCRIPTIONS AND SOLUTIONS BLOWER FAULT - MOTOR CANNOT RUN STATUS: This is a critical fault. The furnace will not operate in any mode. DESCRIPTION: The blower has failed critically or there is a critical motor fault - such as thermal limit trip that prevents the blower motor from running.
  • Page 100: Field Selections - Dipswitches

    A dipswitch bank; SW1 is provided for some field adjust- Selection* Selection ments. Heating blower off delay, cooling (and heat-pump) 30 seconds blower off delay, display (7-Segment) orientation and fault Note: Factory setting = 30 seconds clear are the adjustments and functions that can be han- 45 seconds dled using the dipswitches.
  • Page 101: Fault Clear

    Auto Stage; SW6 & SW7 AutoStage, 15 minutes on low, then to high with call There are applications where a single stage thermostat is on “W1” used with the two stage furnace. With this application the AutoStage, 20 minutes furnace will initially operate in the low heat stage. Based upon a user selected time, the furnace will automatically on low, then to high with call on W1”...
  • Page 102: Timing Diagram

    Below is a timing diagram for normal heat sequence. This diagram assumes no faults are present during the heat call. TABLE 21 TIMING DIAGRAM ST-A1205-10-X0 The maximum gas supply pressure to the furnace should To change orifice spuds, shut off the manual gas valve and be 10.5"...
  • Page 103: Adjusting Or Checking Furnace Input 102 24 Setting Input Rate

    TABLE 22 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) /REV) 42,000 56,000 70,000 84,000 98,000 112,000 Heating Value of Gas (BTU/FT...
  • Page 104 4. When the thermometer in the supply air duct stops ris- ing (approximately five minutes), subtract the return air TYPICAL FURNACE NAME PLATE temperature from the supply air temperature. The dif- RHEEM SALES COMPANY, INC. FORT SMITH, ARKANSAS CANADIAN ENERGY ference is the temperature rise.
  • Page 105: Airflow

    AIR FLOW PERFORMANCE TABLE 23 AIR FLOW PERFORMANCE – 96P(-), TZ96MDP(-), AND FF(-)PT96M SERIES MODELS CFM [Liters] Air Delivery Motor HP [W] Model External Static Pressure, ”W.C. [kPa] Blower Size Input IN [MM] Speed Tap 0.1 [0.02] 0.2 [0.05] 0.3 [0.07] 0.4 [0.10] 0.5 [0.12] 0.6 [0.15]...
  • Page 106: Maintenance

    GAS FURNACE (DIRECT DRIVE) The blower motor is wired for blower speeds required for normal operation as shown. INSTRUCTIONS FOR CHANGING If additional blower speed taps are available (leads con- BLOWER SPEED nected to “M1” and “M2” on the electronic control), speeds may be changed if necessary to fit requirements of the par- ticular installation.
  • Page 107: System Operation Info

    MUST BE REPLACED IF THEY LEAK. checked for damage or water leakage. Hose couplings and clamps should be tight and free of cracks. Tighten and replace damaged components as necessary. Homeowners please visit www.rheem.com for product in- Replacement parts division visit formation. http://www.rheemparts.com/Catalog/...
  • Page 108: Troubleshooting

    FIGURE 51 INTEGRATED FURNACE CONTROL TROUBLESHOOTING GUIDE Fault NOTE: Always verify gas valve inlet and outlet gas pressure. DESCRIPTION CODE FLAME (AMBER) LED CODES KEY TO ABBREVIATIONS Priority OFF = No Flame Presen t IBM = Indoor Blower Motor Standby RAPID BLINK = Unexpected Flame IDM = Induced Draft Motor Compressor on (cooling or heat pump heat)
  • Page 109: Igniter Location

    The igniter location is critical to furnace operation. Once the gap is properly verified and installed the location of the gap must be in the proper location in relation to the If the igniter is ever replaced always pay attention to the burner for best performance.
  • Page 110: Wiring Diagram

    Figure 55 is a complete wiring diagram for the furnace. A wiring diagram is also available on the unit. FIGURE 55 WIRING DIAGRAM 96P(-), TZ96MDP(-), AND FF(-)PT96M SERIES MODELS...
  • Page 112 CM 0217...

This manual is also suitable for:

96mdp series

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