Payne PG9MAB Series A Installation Manual
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Payne PG9MAB Series A Installation Manual

Payne PG9MAB Series A Installation Manual

4-way multipoise fixed-capacity dual-vent condensing gas furnace sizes 040 thru 140 series a
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See also: Service and Maintenance Instructions , Owner's Manual
NOTE: Read the entire instruction manual before starting the installation.
This symbol → indicates a change since the last issue.
SAFETY CONSIDERATIONS.....................................................................................................................................................................................2
CLEARANCES TO COMBUSTIBLES .......................................................................................................................................................................3
DIMENSIONAL DRAWING .......................................................................................................................................................................................4
CODES AND STANDARDS .......................................................................................................................................................................................6
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS .......................................................................................................................................7
INTRODUCTION..........................................................................................................................................................................................................8
APPLICATIONS ...........................................................................................................................................................................................................8
General......................................................................................................................................................................................................................8
Upflow Applications ................................................................................................................................................................................................9
Downflow Applications..........................................................................................................................................................................................10
Horizontal Left (Supply-Air Discharge) Applications ..........................................................................................................................................12
Horizontal Right (Supply-Air Discharge) Applications........................................................................................................................................15
LOCATION .................................................................................................................................................................................................................17
General....................................................................................................................................................................................................................17
Furnace Location Relative to Cooling Equipment................................................................................................................................................18
Location with Respect to Combustion and Circulating Air Requirements..........................................................................................................18
Hazardous Locations ..............................................................................................................................................................................................18
AIR FOR COMBUSTION AND VENTILATION....................................................................................................................................................20
INSTALLATION.........................................................................................................................................................................................................22
Leveling Legs (If Desired).....................................................................................................................................................................................22
Installation In Upflow or Downflow Applications ...............................................................................................................................................22
Installation In Horizontal Applications..................................................................................................................................................................23
Air Ducts ................................................................................................................................................................................................................23
General ..............................................................................................................................................................................................................23
Ductwork Acoustical Treatment.......................................................................................................................................................................23
Supply Air Connections....................................................................................................................................................................................25
Catalog No. IM-PG9MAB-01
Installation Manual
4-WAY MULTIPOISE
FIXED-CAPACITY DUAL-VENT
CONDENSING GAS FURNACE
SIZES 040 THRU 140
As an ENERGY STAR® Partner, Payne
Heating and Cooling has determined that
this product meets the ENERGY STAR®
guidelines for energy efficiency.
Cancels: IM-PG9M-10
INDEX
Printed in U.S.A.
PG9MAB
Series A
Page
8-05

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  • Page 1: Table Of Contents

    FIXED-CAPACITY DUAL-VENT Series A CONDENSING GAS FURNACE SIZES 040 THRU 140 As an ENERGY STAR® Partner, Payne Heating and Cooling has determined that this product meets the ENERGY STAR® guidelines for energy efficiency. NOTE: Read the entire instruction manual before starting the installation.

  • Page 2: Safety Considerations

    Return Air Connections.....................................25 Filter Arrangement ......................................26 Bottom Closure Panel......................................27 Gas Piping..........................................28 Electrical Connections ......................................28 115-v Wiring........................................29 24-v Wiring........................................31 Accessories ........................................31 Wiring Diagram.........................................32 Removal of Existing Furnaces from Common Vent Systems ..........................33 Combustion Air and Vent Pipe Systems ................................33 Condensate Drain .........................................47 General ............................................47 Application ..........................................47 Condensate Drain Protection ....................................48...

  • Page 3: Clearances To Combustibles

    → The PG9MAB Multipoise Condensing Gas-Fired Furnaces are CSA (formerly AGA and CGA) design-certified for natural and propane gases (see furnace rating plate) and for installation in alcoves, attics, basements, closets, utility rooms, crawlspaces, and garages. The furnace is factory-shipped for use with natural gas.

  • Page 4: Dimensional Drawing

    —4—...
  • Page 5 → The PG9MAB 040 through 120 size units are CSA (formerly CGA and AGA) design-certified for use in manufactured (mobile) homes when factory accessory conversion kit is used. The 140 size unit is NOT design-certified for use in manufactured (mobile) homes. These furnaces are suitable for installation in a structure built on site or a manufactured building completed at final site.

  • Page 6: Codes And Standards

    → This gas furnace may be used for construction heat provided that: • The furnace is permanently installed with all electrical wiring, piping, air filters, venting and ducting installed according to these installation instructions. A return air duct is provided, sealed to the furnace casing, and terminated outside the space containing the furnace. This prevents a negative pressure condition as created by the circulating air blower, causing a flame rollout and/or drawing combustion products into the structure.

  • Page 7: Electrostatic Discharge (Esd) Precautions

    FURNACE BLOWER SHELF CONDENSATE DOOR TRAP FURNACE CONDENSATE DOOR FURNACE TRAP (INSIDE) FURNACE SIDE SIDE FIELD FIELD DRAIN DRAIN CONN CONN ALTERNATE DRAIN TUBE LOCATION SIDE VIEW FRONT VIEW END VIEW FRONT VIEW CONDENSATE TRAP DRAIN TUBE LOCATION HORIZONTAL DOWNFLOW AND ALTERNATE UPFLOW APPLICATIONS APPLICATIONS EXTERNAL UPFLOW APPLICATIONS...

  • Page 8: Introduction

    7. An ESD service kit (available from commercial sources) may also be used to prevent ESD damage. INTRODUCTION The model PG9MAB 4-way multipoise, Gas-Fired, Category IV, direct-vent and non-direct vent, condensing furnace is available in model sizes ranging in input capacities of 40,000 to 138,000 Btuh.

  • Page 9: Upflow Applications

    PROCEDURE 2—UPFLOW APPLICATIONS An upflow furnace application is where furnace blower is located below combustion and controls section of furnace, and conditioned air is discharged upwards. A. Condensate Trap Location (Factory-Shipped Orientation) The condensate trap is factory installed in the blower shelf and factory connected for UPFLOW applications. A factory-supplied tube is used to extend the condensate trap drain connection to the desired furnace side for field drain attachment.

  • Page 10: Downflow Applications

    COLLECTOR BOX DRAIN TUBE (BLUE) PLUG PLUG COLLECTOR BOX TUBE (GREEN) COLLECTOR BOX COLLECTOR BOX DRAIN TUBE (BLUE) EXTENSION TUBE COLLECTOR BOX COLLECTOR BOX TUBE (PINK) TUBE (PINK) COLLECTOR BOX TUBE (GREEN) COLLECTOR BOX COLLECTOR BOX DRAIN TUBE (BLUE EXTENSION TUBE &...
  • Page 11 2. Remove trap from blower shelf by gently pushing tabs inward and rotating trap. 3. Install casing hole filler cap (factory-supplied in loose parts bag) into blower shelf hole where trap was removed. WARNING: CARBON MONOXIDE POISONING HAZARD Failure to follow this warning could result in personal injury or death. Casing hole filler cap must be installed in blower shelf hole when condensate trap is relocated to prevent combustion products being drawn in from appliances in the equipment room.

  • Page 12: Horizontal Left (Supply-Air Discharge) Applications

    NOTE: See Fig. 8 or 9 or tube routing label on main furnace door to check for proper connections. Relocate tubes as described below. 1. Disconnect collector box pressure tube (pink label) attached to pressure switch. 2. Extend collector box pressure tube (green label) which was previously connected to condensate trap relief port connection by splicing to small diameter tube (factory-supplied in loose parts bag).
  • Page 13 PLUG COLLECTOR BOX AUXILIARY "J" BOX DRAIN TUBE (BLUE AND WHITE STRIPED) CONDENSATE COLLECTOR BOX TRAP TUBE (GREEN) INDUCER HOUSING COLLECTOR DRAIN TUBE (VIOLET) BOX EXTENSION COLLECTOR BOX DRAIN TUBE DRAIN TUBE (BLUE) COLLECTOR BOX EXTENSION TUBE DRAIN TUBE COUPLING COLLECTOR BOX TUBE (PINK) RELOCATE TUBE BETWEEN BLOWER SHELF AND INDUCER HOUSING FOR 040, 060, AND 080 HEATING INPUT FURNACES...
  • Page 14 COMBUSTION – AIR INTAKE VENT A 12-IN. MIN HORIZONTAL PIPE SECTION IS RECOMMENDED WITH SHORT (5 TO 8 FT) VENT SYSTEMS TO REDUCE EXCESSIVE CONDENSATE DROPLETS FROM ″ EXITING THE VENT PIPE. WORK AREA ″ ⁄ MANUAL SHUTOFF ACCESS OPENING GAS VALVE FOR TRAP DRAIN...

  • Page 15: Horizontal Right (Supply-Air Discharge) Applications

    COLLECTOR BOX DRAIN TUBE (BLUE) COLLECTOR BOX TUBE (GREEN) COLLECTOR BOX EXTENSION TUBE PLUG COLLECTOR BOX TUBE (PINK) AUXILARY “J” BOX RELOCATED HERE CONDENSATE TRAP COLLECTOR BOX DRAIN TUBE (BLUE AND WHITE STRIPED) INDUCER HOUSING DRAIN TUBE (VIOLET) COLLECTOR BOX EXTENSION TUBE A00214 Fig.
  • Page 16 b. Install removed clamp and plug into UPPER collector box drain tube (blue label) which was previously connected to condensate trap. c. Connect LOWER collector box drain tube (blue and white striped label) to condensate trap. Tube does not need to be cut. d.

  • Page 17: Location

    LEVEL (0″) FRONT FRONT ⁄ ″ ⁄ ″ MAX ⁄ ″ MAX UPFLOW OR DOWNFLOW HORIZONTAL A02146 Fig. 14—Furnace Location for Proper Condensate Drainage LOCATION PROCEDURE 1—GENERAL This furnace must • be installed so the electrical components are protected from water. •...

  • Page 18: Furnace Location Relative To Cooling Equipment

    CAUTION: UNIT DAMAGE HAZARD This gas furnace may be used for construction heat provided that: -The furnace is permanently installed with all electrical wiring, piping, air filters, venting and ducting installed according to these installation instructions. A return air duct is provided, sealed to the furnace casing, and terminated outside the space containing the furnace.
  • Page 19 1 SQ IN. PER 4000 DUCTS BTUH* OUTDOORS CIRCULATING AIR VENT THROUGH ROOF DUCTS 12″ MAX 12″ 1 SQ IN. VENT PER 2000 THROUGH 12" MAX BTUH* ROOF 1 SQ IN. 1 SQ IN. 4000 PER 1000 BTUH* BTUH* IN DOOR OR WALL DUCTS UNCONFINED...

  • Page 20: Air For Combustion And Ventilation

    AIR FOR COMBUSTION AND VENTILATION Provisions for adequate combustion, ventilation, and dilution air must be provided in accordance with: • U.S. Installations: Section 8.3 of the NFGC, Air for Combustion and Ventilation and applicable provisions of the local building codes. •...
  • Page 21 Table 1—Minimum Free Area Required for Each Combustion Air Opening or Duct to Outdoors TWO HORIZONTAL DUCTS SINGLE DUCT OR OPENING TWO OPENINGS OR VERTICAL DUCTS (1 SQ. IN./2,000 BTUH) (1,100 SQ. MM/KW) (1 SQ. IN./3,000 BTUH) (734 SQ. MM/KW) (1 SQ.

  • Page 22: Installation

    Table 3-Minimum Space Volumes were determined by using the following equations from the National Fuel Gas Code ANSI Z223.1-2002/NFPA 54-2002,8.3.2.2: 1. For other than fan-assisted appliances, such as a draft hood-equipped water heater: = 21ft other Volume 1000 Btu/hr Other A04002 2.

  • Page 23: Installation In Horizontal Applications

    ″ ⁄ ″ ⁄ ″ ⁄ ″ ⁄ ″ ⁄ ″ ⁄ ″ ⁄ ″ ⁄ A89014 Fig. 20—Leveling Legs 1. Determine application being installed from Table 3. 2. Construct hole in floor per dimensions specified in Table 3 and Fig. 21. 3.
  • Page 24 PLENUM OPENING FLOOR OPENING A96283 Fig. 21—Floor and Plenum Opening Dimensions FURNACE FURNACE (OR COIL CASING WHEN USED) CD5 OR CK5 COIL ASSEMBLY OR KCAKC COIL BOX COMBUSTIBLE FLOORING COMBUSTIBLE FLOORING DOWNFLOW SHEET METAL SUBBASE PLENUM SHEET METAL PLENUM FLOOR OPENING FLOOR OPENING...

  • Page 25: Ductwork Acoustical Treatment

    PERFORATED DISCHARGE DUCT FLANGE 210° A93029 Fig. 24—Duct Flanges Secure ductwork with proper fasteners for type of ductwork used. Seal supply- and return-duct connections to furnace with code approved tape or duct sealer. Flexible connections should be used between ductwork and furnace to prevent transmission of vibration. Ductwork passing through unconditioned space should be insulated to enhance system performance.

  • Page 26: Filter Arrangement

    ⁄ -IN. ROD ANGLE ″ ⁄ IRON OR EQUIVALENT ALTERNATE SUPPORT LOCATION 4-IN. MIN 8-IN. MAX DRAIN (A) ROD LOCATION USING DIMPLE LOCATORS -IN. MAX -IN. HEX NUT (SEE DIMENSIONAL ALTERNATE SUPPORT DWG FOR & WASHER (4) LOCATION FROM BACK REQD PER ROD LOCATIONS) NOTES:...

  • Page 27: Bottom Closure Panel

    COMBUSTION-AIR A 3-IN. MINIMUM INTAKE CLEARANCE TO COMBUSTION-AIR INTAKE IS REQUIRED. VENT ⁄ -IN. ROD ANGLE ″ ⁄ IRON OR EQUIVALENT ALTERNATE SUPPORT LOCATION 4-IN. MIN 8-IN. MAX DRAIN (A) ROD LOCATION USING DIMPLE LOCATORS -IN. MAX -IN. HEX NUT (SEE DIMENSIONAL ALTERNATE SUPPORT &...

  • Page 28: Gas Piping

    Table 5—Maximum Capacity of Pipe* LENGTH OF PIPE (FT) NOMINAL IRON PIPE SIZE INTERNAL DIAMETER (IN.) (IN.) 0.622 0.824 1.049 1-1/4 1.380 1400 1-1/2 1.610 2100 1460 1180 * Cubic ft of gas per hr for gas pressures of 0.5 psig (14-in. wc) or less, and a pressure drop of 0.5-in. wc (based on a 0.60 specific gravity gas). Ref: Table 9.2 NFPA 54-2002 G.

  • Page 29: 115-V Wiring

    21-IN. WIDE ⁄ -IN. WIDE CASINGS ONLY: CASINGS ONLY: SUPPORT RODS (3) INSTALL FIELD-SUPPLIED EXTEND 1/4" ON EACH FILTER FILLER STRIP SIDE OF FILTER AND UNDER FILTER. REST ON CASING FLANGE 3 ″ ″ 1 ″ A00217 Fig. 28—Filter Installed for Side Inlet WASHABLE FILTER BOTTOM...
  • Page 30 FIELD 24-V WIRING FIELD 115-, 208/230-, 460-V WIRING FACTORY 24-V WIRING FACTORY 115-V WIRING NOTE 2 THERMOSTAT FIVE WIRE FIELD-SUPPLIED TERMINALS DISCONNECT THREE-WIRE HEATING-ONLY 208/230- OR BLOWER DOOR SWITCH 460-V THREE PHASE 208/230-V SINGLE PHASE AUXILIARY 115-V FIELD- J-BOX SUPPLIED NOTE 1 DISCONNECT CONDENSING...

  • Page 31: 24-V Wiring

    ALTERNATE FIELD FACTORY LOCATION INSTALLED LOCATION A00212 Fig. 33—Relocating J-Box WARNING: FIRE HAZARD Failure to follow this warning could result in serious injury, death, or property damage. Do not connect aluminum wire between disconnect switch and furnace. Use only copper wire. (See Fig. 32.) Use a separate, fused branch electrical circuit containing a properly sized fuse or circuit breaker for this furnace.

  • Page 32: Wiring Diagram

    PRINTED CIRCIUT BOARD PRINTED CIRCIUT BOARD —32—...

  • Page 33: Removal Of Existing Furnaces From Common Vent Systems

    → The PG9MAB can be vented as either a direct vent (all sizes) or as a non-direct vent (except for 140 size) application. A direct vent system shall be installed in accordance with the direct vent procedures (2-pipe) in the following Combustion Air and Vent Pipe Systems section. For non-direct vent (1-pipe) applications, refer to the non-direct vent (1-pipe) procedures in the same section.
  • Page 34 Table 7—Approved Combustion-Air and Vent Pipe, Fitting and Cement Materials ASTM SPECIFICATION MATERIAL PIPE FITTINGS SOLVENT CEMENT AND PRIMERS DESCRIPTION (MARKED ON MATERIAL) D1527 Pipe — — Schedule-40 D1785 Pipe — — Schedule-40 Solvent D2235 For ABS — — For ABS Cement D2241 Pipe...
  • Page 35 TWINNING AND/OR COMPONENT TEST BLOWER OFF-DELAY TERMINAL J2 JUMPER BLOWER OFF-DELAY HUMIDIFIER TERMINAL (24-VAC 0.5 AMP MAX.) 24-V THERMOSTAT TERMINALS TRANSFORMER 24-VAC CONNECTIONS TEST/TWIN 0.5 AMP@24VAC 3-AMP FUSE FUSE 3-AMP SEC-2 SEC-1 LED OPERATION & EAC-2 DIAGNOSTIC LIGHT PL1-LOW VOLTAGE MAIN HARNESS CONNECTOR 115-VAC(L2)NEUTRAL CONNECTIONS...
  • Page 36 A05009 Table 8—Direct Vent Termination Clearance —36—...
  • Page 37 A05013 Table 9—Other than Direct Vent Termination Clearance —37—...
  • Page 38 Table 10—Maximum Allowable Exposed Vent Pipe Length (ft) With and Without Insulation in Winter Design Temperature Ambient* WINTER DESIGN MAX PIPE FURNACE WITHOUT WITH 3/8–IN. OR TEMPERATURE DIAMETER SIZE INSULATION THICKER INSULATION† (°F) (IN.) * Pipe length (ft) specified for maximum pipe lengths located in unconditioned spaces. Pipes located in unconditioned space cannot exceed total allowable pipe length as specified in Table 10.
  • Page 39 NOTE: Select 1 vent pipe connection and NOTE: Select 1 vent pipe connection and 1 combustion-air pipe connection. 1 combustion-air pipe connection. FLOW COMBUSTION- COMBUSTION- VENT VENT VENT VENT COMBUSTION- COMBUSTION- FLOW UPFLOW DOWNFLOW COMBUSTION- COMBUSTION- FIELD-SUPPLIED VENT VENT 2-IN. DIAMETER FIELD-SUPPLIED PVC 90°...
  • Page 40 → Table 11—Maximum Allowable Vent Pipe Length (Ft) NON-DIRECT VENT DIRECT VENT (2-PIPE) ONLY NUMBER OF 90° ELBOWS (1-PIPE) ONLY UNIT SIZE ALTITUDE (FT) TERMINATION PIPE DIA (BTUH) PIPE DIA TYPE (IN.)* (IN.)* 2 Pipe or 2-in 40,000 1-1/2 1-1/2 Concentric 1-1/2 1-1/2...
  • Page 41 → Table 11—Maximum Allowable Vent Pipe Length (Ft) (Continued) NON-DIRECT VENT DIRECT VENT (2-PIPE) ONLY NUMBER OF 90° ELBOWS (1-PIPE) ONLY UNIT SIZE ALTITUDE (FT) TERMINATION PIPE DIA (BTUH) PIPE DIA TYPE (IN.)* (IN.)* 1-1/2 1-1/2 2 Pipe or 2-in 40,000 Concentric 1-1/2...
  • Page 42 → Table 11—Maximum Allowable Vent Pipe Length (Ft) (Continued) NON-DIRECT VENT DIRECT VENT (2-PIPE) ONLY NUMBER OF 90° ELBOWS (1-PIPE) ONLY UNIT SIZE ALTITUDE (FT) TERMINATION PIPE DIA (BTUH) PIPE DIA TYPE (IN.)* (IN.)* 1-1/2 1-1/2 2 Pipe or 2-in 40,000 Concentric 1-1/2...
  • Page 43 HOUSING COMBUSTION–AIR PLUG INTAKE HOUSING ″ ID TUBE BURNER FURNACE ″ 3/16 DRILL COMBUSTION– NOT IN AIR PIPE HORIZONTAL SECTION 4″ TRAP PIPE DIAMETER TRANSITION IN VERTICAL SECTION TO OPEN DRAIN A93034 Fig. 38—Vent Pipe Diameter Transition Location A96190 Fig. 39—Intake Housing Plug Fitting Drain and Elbow Configuration 6.
  • Page 44 COMBUSTION AIR PIPE (DIRECT VENT /2-PIPE) 12 ″ MIN COMBUSTION AIR COMBUSTION AIR 12 ″ MIN PIPE (NON-DIRECT PIPE (NON-DIRECT VENT/1-PIPE) VENT/1-PIPE) VENT PIPE VENT PIPE COMBUSTION AIR PIPE (DIRECT VENT/2-PIPE) HORIZONTAL TO ROOF HORIZONTAL TO SIDEWALL COMBUSTION AIR PIPE (DIRECT VENT /2-PIPE) COMBUSTION AIR COMBUSTION AIR...
  • Page 45 Roof Termination (Preferred) At least 36 in. Concentric Vent and Combustion Air Roof Termination (preferred) Vertical separation between combustion At least air and vent 8 3/4 in. for 3 in. kit 36 in. Maintain 12 min. clearance above 18 in. maximum 6 3/4 in.
  • Page 46 10. Handle pipe joints carefully until cement sets. 11. Support combustion air piping (if applicable) and vent piping a minimum of every 5 ft (3 ft for SDR-21 or -26 PVC) using perforated metal hanging strap. 12. Slope combustion air piping (if applicable) and vent piping downward towards furnace a minimum of 1/4 in. per linear ft with no sags between hangers.

  • Page 47: Condensate Drain

    4. Check required dimensions as shown in Fig. 40. MULTIVENTING AND VENT TERMINATIONS When 2 or more PG9MAB Furnaces are vented near each other, each furnace must be individually vented. NEVER common vent or breach vent PG9MAB furnaces. (Direct Vent/2-Pipe System ONLY)-When 2 or more PG9MAB furnaces are vented near each other, 2 vent terminations may be installed as shown in Fig.

  • Page 48: Condensate Drain Protection

    CONDENSATE TRAP OPEN STAND PIPE FOR A/C OR HUMIDIFIER DRAIN WIRE TIE(S) TO OPEN HEAT TAPE DRAIN (3 WRAPS MINIMUM) A94054 A93036 Fig. 43—Example of Field Drain Attachment Fig. 44—Condensate Trap Heat Tape See Fig. 43 for example of possible field drain attachment using 1/2-in. CPVC or PVC tee for vent and A/C or humidifier drain connection. Outdoor draining of the furnace is permissible if allowed by local codes.

  • Page 49: Purge Gas Lines

    A94208 A94209 Fig. 45—Inducer Housing Drain Cap Fig. 46—Filling Condensate Trap 1. Remove upper inducer housing drain connection cap. (See Fig. 45.) 2. Connect field-supplied 1/2-in. ID tube to upper inducer housing drain connection. 3. Insert field-supplied funnel into tube. 4.

  • Page 50: Cooling Mode

    b. Igniter Warm-Up- At the end of the prepurge period, the Hot-Surface Igniter HSI is energized for a 17-second igniter warm-up period. c. Trial-for-Ignition Sequence- When the igniter warm-up period is completed the main gas valve relay contacts GVR close to energize the gas valve GV, the gas valve opens.

  • Page 51: Adjustments

    Obtain average gas specific gravity from local gas supplier. c. Verify furnace model and size. Table 13 can only be used for model PG9MAB furnaces with heating sizes of 040 through 120. Table 14 can only be used for model PG9MAB furnaces with heating size of 140.
  • Page 52 Table 13—Model PG9MAB Orifice Size and Manifold Pressure for Correct Input For Use With 040 Through 120 Size Furnaces Only (Tabulated Data Based on 20,000 Btuh per Burner, Derated 2% for Each 1000 Ft Above Sea Level)* SPECIFIC GRAVITY OF NATURAL GAS...
  • Page 53 Table 13—Model PG9MAB Orifice Size and Manifold Pressure for Correct Input (Continued) For Use With 040 Through 120 Size Furnaces Only (Tabulated Data Based on 20,000 Btuh per Burner, Derated 2% for Each 1000 Ft Above Sea Level) SPECIFIC GRAVITY OF NATURAL GAS...
  • Page 54 Table 13—Model PG9MAB Orifice Size and Manifold Pressure for Correct Input (Continued) For Use With 040 Through 120 Size Furnaces Only (Tabulated Data Based on 20,000 Btuh per Burner, Derated 2% for Each 1000 Ft Above Sea Level) SPECIFIC GRAVITY OF NATURAL GAS...
  • Page 55 Table 14—Model PG9MAB Orifice Size and Manifold Pressure for Correct Input For Use with 140 Size Furnaces Only (Tabulated Data Based on 23,000 Btuh per Burner, Derated 2% for Each 1000 Ft Above Sea Level) * SPECIFIC GRAVITY OF NATURAL GAS...
  • Page 56 Table 14—Model PG9MAB Orifice Size and Manifold Pressure for Correct Input (Continued) For Use with 140 Size Furnaces Only (Tabulated Data Based on 23,000 Btuh per Burner, Derated 2% for Each 1000 Ft Above Sea Level) SPECIFIC GRAVITY OF NATURAL GAS...
  • Page 57 BURNER ORIFICE A93059 Fig. 47—Burner Orifice d. Turn adjusting screw, counterclockwise (out) to decrease manifold pressure or clockwise (in) to increase manifold pressure. NOTE: This furnace has been approved for a manifold pressure of 3.2 in. wc to 3.8 in. wc when installed at altitudes up to 2000 ft. For altitudes above 2000 ft, the manifold pressure can be adjusted from 2.0 in.

  • Page 58: Set Temperature Rise

    REGULATOR SEAL CAP REGULATOR BURNER FLAME ADJUSTMENT SCREW BURNER ON/OFF SWITCH REGULATOR SPRING (PROPANE - WHITE, 6 TURNS NATURAL - SILVER, 10 TURNS) GAS PRESSURE REGULATOR ADJUSTMENT INLET PRESSURE TAP MANIFOLD PRESSURE TAP MANIFOLD A03142 A89020 Fig. 48—Redundant Automatic Gas Valve Fig.

  • Page 59: Blower Off Delay (Heat Mode)

    Table 16—Gas Rate (Cu Ft/Hr) SIZE OF TEST DIAL SIZE OF TEST DIAL SECONDS SECONDS FOR 1 FOR 1 REVOLUTION REVOLUTION cu ft cu ft cu ft cu ft cu ft cu ft 1800 1636 1500 1385 1286 1200 1125 1059 1000 3.

  • Page 60: Check Primary Limit Control

    Table 17—Speed Selector FACTORY-SHIPPED COLOR SPEED CONNECTION Black High Cool Yellow (When Present) Medium High Spare Blue Medium Low Heat Spare White Common Table 18—Blower Off Delay Setup Position PINS 1 AND 2 2 AND 3 3 AND 4 4 AND 5 Time (in sec) THERMOSTAT SUBBASE TERMINALS WITH...

  • Page 61: Checklist

    CHECKLIST 1. Put away tools and instruments. Clean up debris. 2. Verify flame rollout manual reset switch has continuity. 3. Verify that blower and main access doors are properly installed. 4. Cycle test furnace with room thermostat. 5. Check operation of accessories per manufacturer’s instructions. 6.
  • Page 62 CHECKLIST—DIRECT VENT INSTALLATIONS LOAD CALCULATION ____________ Heating Load (Btuh) ____________ Cooling Load (Btuh) ____________ Furnace Model Selection COMBUSTION AIR AND VENT PIPING Termination Location ________ Roof or Sidewall ________ Termination Kit — 2 Pipe or Concentric ________ Combustion-Air Pipe Length ________ Combustion-Air Pipe Elbow Quantity ________...
  • Page 63 CHECKLIST—NON-DIRECT VENT INSTALLATIONS LOAD CALCULATION ____________ Heating Load (Btuh) ____________ Cooling Load (Btuh) ____________ Furnace Model Selection VENT PIPING Termination Location ________ Roof or Sidewall ________ Vent Pipe Length ________ Vent Pipe Elbow Quantity ________ Pipe Diameter Determined from Sizing Table ________ Pipe Sloped To Furnace Pipe Insulation...
  • Page 64 —64— © 2005 Payne Heating & Cooling 7310 W. Morris St., Indianapolis, IN 46231 impg9mab01 Catalog No. IM-PG9MAB-01...

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