Page 3 - Fig. 1—Clearances to Combustibles; MINIMUM INCHES CLEARANCE TO COMBUSTIBLE CONSTRUCTION; INSTALLATION
These instructions cover the minimum requirements and conform to existing national standards and safety codes. In some instances, theseinstructions exceed certain local codes and ordinances, especially those that may not have kept up with changing residential construction practices.We require these ...
Page 4 - UNIT
→ Fig. 2—Dimensional Drawing Dimensions (In.) UNIT SIZE A D E 024040 17-1/2 15-7/8 16 036040 17-1/2 15-7/8 16 024060 17-1/2 15-7/8 16 036060 17-1/2 15-7/8 16 048060 17-1/2 15-7/8 16 036080 17-1/2 15-7/8 16 048080 17-1/2 15-7/8 16 060080 21 19-3/8 19-1/2 048100 21 19-3/8 19-1/2 060100 21 19-3/8 19-1/...
Page 5 - Fig. 3—Multipoise Orientations
Maintain a 1-in. clearance from combustible materials to supply air ductwork for a distance of 36 inches horizontally from the furnace. See NFPA90B or local code for further requirements. These furnaces SHALL NOT be installed directly on carpeting, tile, or any other combustible material other than ...
Page 14 - NOTE: LOCAL CODES MAY REQUIRE A DRAIN PAN UNDER THE
Fig. 12—Attic Location and Working Platform for Non-Direct Vent Applications (Sizes 040 through 120 Only) A96184 VENT MANUAL SHUTOFF GAS VALVE SEDIMENTTRAP CONDENSATETRAP DRAIN ACCESS OPENINGFOR TRAP 30-IN. MINWORK AREA A 12-IN. MIN HORIZONTAL PIPESECTION IS RECOMMENDED WITHSHORT (5 TO 8 FT) VENT SY...
Page 17 - This furnace must; Fig. 14—Furnace Location for Proper Condensate
LOCATION PROCEDURE 1—GENERAL This furnace must • be installed so the electrical components are protected from water. • not be installed directly on any combustible material other than wood flooring (refer to SAFETY CONSIDERATIONS). • be located so combustion-air and vent pipe maximum lengths are not...
Page 18 - hot wired; F MINIMUM INSTALLED
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 theseinstallation instructions. A return air duct is provided, sealed to the ...
Page 19 - TO BURNERS
B. Non-Direct Vent Applications CAUTION: UNIT DAMAGE HAZARD Failure to follow this caution may result in intermittent unit operation.Do not install furnace in a corrosive or contaminated atmosphere. Make sure all combustion and circulating air requirements are met. Refer to the Air for Combustion an...
Page 21 - WARNING: CARBON MONOXIDE POISONING HAZARD; and; EXAMPLES: Determining Free Area
3. ONE OUTDOOR OPENING requires: a. 1 square inch of free area per 3,000 Btuh (734 mm 2 /kW) for combined input of all gas appliances in the space per Table 1 and b. Not less than the sum of the areas of all vent connectors in the space. The opening shall commence within 12 ″ (300 mm) of the ceiling...
Page 22 - ACH; Volume; ACH
Table 3-Minimum Space Volumes were determined by using the following equations from the National Fuel Gas Code ANSI Z223.1-2002/NFPA54-2002,8.3.2.2: 1. For other than fan-assisted appliances, such as a draft hood-equipped water heater: 2. For fan-assisted appliances such as this furnace: If: I other...
Page 24 - Assembly or Coil Box Installed
Table 3—Opening Dimensions (In.) FURNACE CASING WIDTH APPLICATION PLENUM OPENING FLOOR OPENING A B C D 17-1/2 Upflow Applications 16 24-1/8 16-5/8 24-3/4 Downflow Applications on Non-Combustible Flooring 15-7/8 19 16-1/2 19-5/8 Downflow Applications on Combustible Flooring Using KGASB Subbase Furnac...
Page 25 - Return Air Connections; UPFLOW FURNACES; YES
Secure ductwork with proper fasteners for type of ductwork used. Seal supply- and return-duct connections to furnace with code approved tapeor duct sealer. Flexible connections should be used between ductwork and furnace to prevent transmission of vibration. Ductwork passing through unconditionedspa...
Page 26 - DOWNFLOW AND HORIZONTAL FURNACES; Filter Arrangement; REQD PER ROD
DOWNFLOW AND HORIZONTAL FURNACES The return-air duct must be connected to return-air opening provided as shown in Fig. 2. DO NOT cut into casing sides or back to attach any portionof return-air duct. Bypass humidifier connections should be made at ductwork or coil casing sides exterior to furnace. E...
Page 27 - CAUTION: UNIT MAY NOT OPERATE; Remove and discard bottom closure panel when bottom inlet is used.; Bottom Closure Panel; To remove bottom closure panel, perform following:; Table 4—Filter Information; FURNACE CASING; Side Return
CAUTION: UNIT MAY NOT OPERATE Failure to follow this caution may result in intermittent unit operation.For airflow requirements above 1800 CFM, see Air Delivery table in Product Data literature for specific use of single side inlets. Theuse of both side inlets, a combination of 1 side and the bottom...
Page 28 - extend a minimum of 2 in. outside furnace casing.; NOMINAL IRON PIPE SIZE
G. Gas Piping Gas piping must be installed in accordance with national and local codes. Refer to current edition of NFGC in the United States. Canadianinstallations must be made in accordance with NSCNGPIC and all authorities having jurisdiction. Gas supply line should be a separate line runningdire...
Page 29 - UNION
A. 115-v Wiring Before proceeding with electrical connections, make certain that voltage, frequency, and phase correspond to that specified on unit rating plate.Check to be sure that service provided by power supply is sufficient to handle load imposed by this equipment. Refer to rating plate or Tab...
Page 30 - Fig. 31—Heating and Cooling Application Wiring Diagram; Table 6—Electrical Data
Make all electrical connections in accordance with National Electrical Code (NEC) ANSI/NFPA 70-2002 and any local codes or ordinances thatmight apply. For Canadian installations, all electrical connections must be made in accordance with Canadian Electrical Code CSA C22.1 orauthorities having jurisd...
Page 31 - and furnace will NOT operate.; WARNING: ELECTRICAL SHOCK AND FIRE HAZARD
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 c...
Page 32 - Diagram; PCB
Fig. 34—Wiring Diagram A02271 PCB T R A N FR S NO T E # 1 1 LS PR S (W H E N US ED ) LG P S F U SED O R CI R C U IT BREAKE R DI SC ONNE C T SWI T CH ( W HE N R E Q’ D) NO T E # 2 JB L1 L1 BL W R T O 11 5V A C FI EL D DI SCO NNECT NO TE # 2 EQ U IP M EN T G R O U N D SP A R E- 1 HE A T C OOL HS IR EA...
Page 33 - the venting system are located and other spaces of the building.; PROCEDURE 7—COMBUSTION AIR AND VENT PIPE SYSTEMS
2. Humidifier (HUM) A quick-connect terminal (HUM) and screw terminal (C OM 24v) are provided for 24-v humidifier connection. (See Fig. 35.) HUM terminal is energized with 24v (0.5-amp maximum) when gas valve is energized. NOTE: A field-supplied, 115-v controlled relay connected to EAC terminals may...
Page 34 - Materials; ASTM SPECIFICATION
C. Non-Direct Vent/1-Pipe System Sizes 040 Through 120 Only) In a non-direct vent (1-pipe) system, all air for combustion is taken from the area adjacent to furnace, and all flue products are discharged to outdooratmosphere. A factory-supplied perforated disk assembly (in loose parts bag) MUST be us...
Page 36 - Table 8—Direct Vent Termination Clearance
Table 8—Direct Vent Termination Clearance A05009 —36—
Page 37 - Table 9—Other than Direct Vent Termination Clearance
Table 9—Other than Direct Vent Termination Clearance A05013 —37—
Page 38 - Combustion Air Pipe; GENERAL; CAUTION: UNIT CORROSION HAZARD; remove pipe for servicing.
E. Combustion Air Pipe GENERAL Furnace combustion-air connection must be attached as shown in Fig. 35. Combustion-air intake housing plug may need to be relocated in someapplications. For Non-Direct Vent (1-Pipe) system, combustion-air must terminate outside of furnace casing with 1 elbow. Orient el...
Page 39 - ATTACHMENT OF COMBUSTION AIR PIPE; Fig. 36—Combustion-Air and Vent Pipe Connections; Fig. 37—Combustion-Air Inlet Pipe Assembly; CASING WIDTH
4. Permanently attach elbow/perforated disk assembly to straight portion of pipe using RTV or by cementing as shown in Fig. 36. ASSEMBLY OF COMBUSTION AIR PIPE (DIRECT VENT-2-PIPE SYSTEM ONLY) 1. Using Table 11, determine the smallest combustion air diameter permitted. Pick the larger diameter and u...
Page 40 - Table 11—Maximum Allowable Vent Pipe Length (Ft)
Table 11—Maximum Allowable Vent Pipe Length (Ft) ALTITUDE (FT) UNIT SIZE (BTUH) DIRECT VENT (2-PIPE) ONLY NON-DIRECT VENT (1-PIPE) ONLY NUMBER OF 90° ELBOWS TERMINATION TYPE PIPE DIA (IN.)* PIPE DIA (IN.)* 1 2 3 4 5 6 0 to 2000 40,000 2 Pipe or 2-in Concentric 1 1 5 NA NA NA NA NA 1-1/2 1-1/2 70 70 ...
Page 44 - CAUTION: UNIT DAMAGE HAZARD; ATTACHMENT OF VENT EXTENSION PIPE; NOTE: A 12-In. minimum offset pipe section is recommended with
5. Be certain that mating surfaces of inducer housing connection elastomeric (rubber) coupling, and 2-in. diameter vent pipe are clean and dry. Assemble the elastomeric (rubber) vent coupling (with 2 loose clamps) onto inducer housing connection. Insert the 2-in. diameter vent pipethrough the elasto...
Page 45 - Fig. 41—Combustion Air and Vent Pipe Termination; Fig. 42—Vent Pipe Termination for Non-Direct
7. After pipes have been cut and preassembled, apply generous layer of cement primer to pipe fitting socket and end of pipe to insertion mark. Quickly apply approved cement to end of pipe and fitting socket (over primer). Apply cement in a light, uniform coat on inside of socketto prevent buildup of...
Page 46 - Handle pipe joints carefully until cement sets.; Vent Termination
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 ...
Page 47 - Sidewall terminations—Install bracket as shown in Fig. 40.; MULTIVENTING AND VENT TERMINATIONS; PROCEDURE 8—CONDENSATE DRAIN; Condensate trap MUST be used for all applications.; TERMINATION SYSTEM; Single Penetration of Wall or Roof
3. Slide assembled kit with rain shield REMOVED through hole. NOTE: Do not allow insulation or other materials to accumulate inside of pipe assembly when installing it through hole. Roof terminations—Locate assembly through roof to appropriate height as shown in Fig. 40. Sidewall terminations—Locate...
Page 48 - CONDENSATE TRAP
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. Caution should be taken when freezing ambient may freeze drain pipeand prohibit draining....
Page 50 - calls for cooling; Heat Pump 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...
Page 51 - WARNING: ELECTRICAL SHOCK HAZARD; PROCEDURE 5—ADJUSTMENTS
To Begin Component Self-Test: WARNING: ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in electrical shock, personal injury, or death.Blower access panel door switch opens 115-v power to control center. No component operation can occur. Caution must be takenwhen manually closing ...
Page 52 - For Use With 040 Through 120 Size Furnaces Only
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)* ALTITUDE RANGE (FT) AVG GAS HEAT VALUE AT ALTITUDE (BTU/CU FT) SPECIFIC GRAVITY OF...
Page 53 - Only
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) ALTITUDE RANGE (FT) AVG GAS HEAT VALUE AT ALTITUDE (BTU/CU FT) SPECIFIC...
Page 55 - For Use with 140 Size Furnaces Only
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) * ALTITUDE RANGE (FT) AVG GAS HEAT VALUE AT ALTITUDE (BTU/CU FT) SPECIFIC GRAVITY OF NATURAL GA...
Page 57 - FURNACE INPUT RATE; BURNER; 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...
Page 58 - Set Temperature Rise; Determine and adjust air temperature rise as follows:; Fig. 48—Redundant Automatic Gas Valve; BURNER FLAME
g. Refer to Table 16 for cu ft of gas per hr. h. Multiply gas rate (cu ft/hr) X heating value (Btu/cu ft) using natural gas heating value from local gas utility/supplier. EXAMPLE: (0—2000 ft altitude)Furnace input from rating plate is 100,000 Btuh.Btu heating input = Btu/cu ft X cu ft/hrHeating valu...
Page 59 - SIZE OF TEST DIAL
3. Adjust temperature rise by adjusting blower speed. Increase blower speed to reduce temperature rise. Decrease blower speed to increase temperature rise. WARNING: ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death.Disconnect 115-v electrical power befor...
Page 61 - CHECKLIST; Verify flame rollout manual reset switch has continuity.
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....
Page 62 - CHECKLIST—DIRECT VENT INSTALLATIONS
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 ________ Combustio...
Page 63 - CHECKLIST—NON-DIRECT VENT INSTALLATIONS
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 Diamete...