Lennox ELITE Series Installation Instructions Manual
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Lennox ELITE Series Installation Instructions Manual

Downflow air discharge
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2020 Lennox Industries Inc.
©
Dallas, Texas USA
CAUTION
As with any mechanical equipment, personal injury can
result from contact with sharp sheet metal edges. Be
careful when you handle this equipment.
Contents
Unit Dimensions - inches (mm) ......................................2
EL296DFV Gas Furnace ................................................3
Shipping and Packing List ..............................................3
Safety Information ..........................................................3
Use of Furnace as Construction Heater .........................4
General ...........................................................................5
Combustion, Dilution & Ventilation Air ............................5
Setting Equipment ..........................................................8
Filters ............................................................................12
Duct System .................................................................12
Pipe Fittings Specifications...........................................12
Venting Options ............................................................13
Joint Cementing Procedure ..........................................16
INSTALLATION
INSTRUCTIONS
EL296DFV
ELITE
SERIES GAS FURNACE
®
DOWNFLOW AIR DISCHARGE
507048-04
06/2020
Supersedes 06/2019
THIS MANUAL MUST BE LEFT WITH THE
HOMEOWNER FOR FUTURE REFERENCE
This is a safety alert symbol and should never be
ignored. When you see this symbol on labels or in man-
uals, be alert to the potential for personal injury or death.
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, personal
injury or loss of life. Installation and service must be
performed by a licensed professional HVAC installer (or
equivalent), service agency or the gas supplier.
A thermostat is not included and must be ordered
separately.
• A communicating thermostat must be used in
communicating applications.
• In non-communicating applications, the Lennox
ComfortSense
7500 thermostat may be used, as well
®
as other non-communicating thermostats.
In all cases, setup is critical to ensure proper system
operation.
Field
wiring
for
communicating applications is illustrated in diagrams,
which begin on Page 39.
Venting Practices ..........................................................16
Vent Piping Guidelines ................................................18
Gas Piping ...................................................................35
Electrical ......................................................................37
Integrated Control ........................................................47
Blower Motor Performance ..........................................52
Unit Start Up ................................................................56
Gas Pressure Measurement ........................................57
Proper Combustion / High Altitude ..............................58
Heating Sequence of Operation ..................................60
Service .........................................................................61
Program Unit Capacity Size Mode ...............................63
Repair Parts List ...........................................................65
Start-Up Checklist.........................................................67
Page 1
WARNING
NOTICE
both
communicating
and
non-

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Summary of Contents for Lennox ELITE Series

  • Page 1: Table Of Contents

    NOTICE A thermostat is not included and must be ordered separately. • A communicating thermostat must be used in communicating applications. • In non-communicating applications, the Lennox ComfortSense 7500 thermostat may be used, as well ® CAUTION as other non-communicating thermostats.

  • Page 2: Unit Dimensions - Inches (Mm)

    Unit Dimensions - inches (mm) 9/16 (14) Flue Condensate Trap Assembly COMBUSTION AIR INTAKE Furnished for external field installation (178) RETURN AIR on either side of unit. OPENING EXHAUST AIR (See installation instructions OUTLET for additional information.) 2-1/16 (52) 2-1/4 9/16 (14) (57)

  • Page 3: El296Dfv Gas Furnace

    EL296DFV Gas Furnace Shipping and Packing List Package 1 of 1 contains The EL296DFV Category IV gas furnace is shipped ready for installation in the downflow position. 1 - Assembled EL296DFV unit The furnace is equipped for installation in natural gas applica- 1 - Bag assembly containing the following: tions.

  • Page 4: Use Of Furnace As Construction Heater

    Building Codes In Canada, all electrical wiring and grounding for the unit must be installed according to the current regulations of In the USA, installation of gas furnaces must conform with the Canadian Electrical Code Part I (CSA Standard C22.1) local building codes.

  • Page 5: General

    Chlorinated waxes and cleaners FAILURE TO FOLLOW THE ABOVE INSTALLATION IN- Chlorine base swimming pool chemicals STRUCTIONS VOIDS THE MANUFACTURER’S EQUIP- MENT LIMITED WARRANTY. LENNOX DISCLAIMS Water softening chemicals ALL LIABILITY IN CONNECTION WITH INSTALLER’S De-icing salts or chemicals FAILURE TO FOLLOW THE ABOVE INSTALLATION IN- Carbon tetrachloride STRUCTIONS.
  • Page 6 You must consider combustion air needs and require- Confined Space ments for exhaust vents and gas pip-ing. A portion of this A confined space is an area with a volume less than 50 information has been reprinted with permission from the cubic feet (1.42 m3) per 1,000 Btu (.29 kW) per hour of National Fuel Gas Code (ANSI Z223.1/NFPA 54).
  • Page 7 Air from Outside EQUIPMENT IN CONFINED SPACE If air from outside is brought in for combustion and ventila- (Inlet Air from Ventilated Crawlspace and Outlet Air to Outside) tion, the confined space shall be provided with two perma- nent openings. One opening shall be within 12” (305mm) of the top of the enclosure and one within 12”...

  • Page 8: Setting Equipment

    EQUIPMENT IN CONFINED SPACE - ALL AIR FROM OUTSIDE UNITS WITH 1/2 HP (All Air Through Ventilated Attic) BLOWER MOTOR ROOF TERMINATED VENTILATION LOUVERS EXHAUST PIPE (Each end of attic) OUTLET RIGID LEG remove shipping bolt and washer INLET AIR SIDE WALL FURNACE (Ends 12”...
  • Page 9 Front Back Horizontal NOTE - Do not install the furnace on its front, back or in the horizontal position FIGURE 12 WARNING Improper installation of the furnace can result in personal injury or death. Combustion and flue products must never be allowed to enter the return air system or air in the living space.
  • Page 10 The unit may be installed three ways in downflow applica- 3 - Set the unit over the plenum and seal the plenum to tions: on non-combustible flooring, on combustible floor- the unit. ing using an additive base, or on a reverse-flow cooling 4 - Ensure that the seal is adequate.
  • Page 11 TABLE 2 COMBUSTIBLE FLOORING BASE OPENING SIZE Front to Rear Side to Side Cabinet Catalog FURNACE Width Number B (17.5”) 11M60 18-3/4 C (21”) 11M61 22-3/4 COOLING COIL PROPERLY SIZED FLOOR FURNACE OPENING PLENUM SUPPLY AIR PLENUM PROPERLY COMBUSTIBLE SIZED FLOOR FLOORING BASE OPENING FIGURE 16...

  • Page 12: Filters

    This the data given in the appropriate Lennox Product raw gas or toxic fumes might then be distributed through- Specifications bulletin. Additional information is provided out the house by the furnace duct system.

  • Page 13: Venting Options

    Low temperature solvent cement is recommended during TABLE 4 cooler weather. Metal or plastic strapping may be used for PIPING AND FITTINGS SPECIFICATIONS vent pipe hangers. Uniformly apply a liberal coat of PVC primer for PVC or use a clean dry cloth for ABS to clean Schedule 40 PVC (Pipe) D1785 inside socket surface of fitting and male end of pipe to...
  • Page 14 Intake Connections FIGURE 20 Crawl Space and Extended Horizontal Venting Lennox provides kit 51W18 (USA) and kit 15Z70 (Cana- da) to install 2” or 3” PVC exhaust piping through the floor Pipe Clamp joists and into the the crawl space. See FIGURE 21. This kit can also be used as a supplemental drain for installa- tions with condensate run back in the vent pipe (ie.
  • Page 15 Right Side Vent Configuration Side Vent Sealing Plate Side Vent Sealing Gaskets Exhaust Intake Street Elbows (2) FIGURE 22 TABLE 5 OUTDOOR TERMINATION USAGE* STANDARD CONCENTRIC Flush Mount Wall Kit 1-1/2 inch 2 inch 3 inch Vent Pipe Input Size 2 inch 3 inch Field...

  • Page 16: Joint Cementing Procedure

    Joint Cementing Procedure Venting Practices All cementing of joints should be done according to the specifications outlined in ASTM D 2855. Piping Suspension Guidelines NOTE - A sheet metal screw may be used to secure the intake pipe to the connector, if desired. Use a drill or self SCHEDULE 40 PVC - 5' tapping screw to make a pilot hole.
  • Page 17 1 - In areas where piping penetrates joists or interior 4 - Follow the lighting instructions. Turn on the appliance walls, hole must be large enough to allow clearance that is being inspected. Adjust the thermostat so that on all sides of pipe through center of hole using a the appliance operates continuously.

  • Page 18: Vent Piping Guidelines

    NOTE - Exhaust pipe MUST be glued to furnace exhaust Vent Piping Guidelines fittings. NOTE - Lennox has approved the use of DuraVent® and NOTE - Exhaust piping should be checked carefully to Centrotherm manufactured vent pipe and terminations as make sure there are no sags or low spots.
  • Page 19 TABLE 7 Maximum Allowable Intake or Exhaust Vent Length Size intake and exhaust pipe length separately. Values in table are for Intake OR Exhaust, not combined total. Intake and Exhaust must be same size. NOTE - Additional vent pipe and elbows used to terminate the vent pipe outside the structure must be included in the total vent length calculation. Standard Termination at Elevation 0 - 4500 ft Number 2”...
  • Page 20 TABLE 7 CONT. Maximum Allowable Intake or Exhaust Vent Length Size intake and exhaust pipe length separately. Values in table are for Intake OR Exhaust, not combined total. Intake and Exhaust must be same size. NOTE - Additional vent pipe and elbows used to terminate the vent pipe outside the structure must be included in the total vent length calculation. Concentric Termination at Elevation 0 - 4500 ft Number 2”...
  • Page 21 TYPICAL EXHAUST PIPE CONNECTIONS AND CONDENSATE TRAP INSTALLATION 2” 2” 2” DO NOT transition from smaller to larger pipe size in horizontal runs of exhaust pipe. 3” TRANSITION *2“ Exhaust Air Intake TOP VIEW * When transitioning up in pipe size, use the shortest length of 2” PVC pipe possible. NOTE −...
  • Page 22 TYPICAL EXHAUST CONNECTIONS WITH RIGHT SIDE VENT OPTION Pipe Length 4” Maximum (Not Furnished) 3” 2” 2” TRANSITION *2” 2” Plate (Furnished) Street Ell (Not Furnished) TOP VIEW * When transitioning up in pipe size, use the shortest length of 2” PVC pipe possible. NOTE Intake pipe and exhaust pipe must be the same diameter.
  • Page 23 Intake Piping EQUIPMENT IN CONFINED SPACE The EL296DFV furnace may be installed in either direct (Inlet Air from Ventilated Crawlspace and Outlet Air to Outside) vent or non-direct vent applications. In non-direct vent ap- plications, when intake air will be drawn into the furnace Roof Terminated from the surrounding space, the indoor air quality must be Exhaust Pipe...
  • Page 24 In both Non-Direct Vent and Direct Vent applications, the TYPICAL AIR INTAKE PIPE CONNECTIONS vent termination is limited by local building codes. In the NON−DIRECT VENT APPLICATIONS absence of local codes, refer to the current National Fuel Gas Code ANSI Z223-1/NFPA 54 in U.S.A., and current INTAKE CSA-B149 Natural Gas and Propane Installation Codes in SCREEN...
  • Page 25 TABLE 9 Maximum Allowable Exhaust Vent Pipe Length (in ft.) Without Insulation In Unconditioned Space For Winter Design Temperatures Two - Stage High Efficiency Furnace Vent Pipe Unit Input Size Winter Design Temperatures1 °F (°C) Diameter 2 in 32 to 21 (0 to -6) 2-1/2 in 3 in...
  • Page 26 ‡ Permitted only if veranda, porch, deck or balcony is fully open on a minimum of two sides beneath the floor. Lennox recommends avoiding this location if possible. FIGURE 34...
  • Page 27 ‡ Permitted only if veranda, porch, deck or balcony is fully open on a minimum of two sides beneath the floor. Lennox recommends avoiding this location if possible. FIGURE 35 Page 27...
  • Page 28 Details of Intake and Exhaust Piping Terminations for 6 - On field supplied terminations, a minimum distance Direct Vent Installations between the end of the exhaust pipe and the end of the intake pipe without a termination elbow is 8” and NOTE - In Direct Vent installations, combustion air is taken a minimum distance of 6”...
  • Page 29 7 - If intake and exhaust piping must be run up a side wall to position above snow accumulation or other obstructions, piping must be supported. At least 12” EXHAUST one bracket must be used within 6” from the top of (305mm) VENT 5-1/2”...
  • Page 30 FIELD FABRICATED WALL TERMINATION NOTE − FIELD−PROVIDED REDUCER MAY BE 2” (51mm) 3” (76mm) REQUIRED TO ADAPT LARGER VENT PIPE SIZE Vent Pipe Vent Pipe TO TERMINATION A− Minimum clearance above grade or average 12” (305 mm) 12” (305 mm) snow accumulation B−...
  • Page 31 Details of Exhaust Piping Terminations for Non-Direct Vent Applications 12” (305mm) ABOVE AVE. Exhaust pipes may be routed either horizontally through SNOW an outside wall or vertically through the roof. In attic or ACCUMULATION closet installations, vertical termination through the roof is preferred.
  • Page 32 Condensate Piping 1 - Determine which side condensate piping will exit the unit, location of trap, field-provided fittings and This unit is designed for either right- or left-side exit of length of PVC pipe required to reach available drain. condensate piping. Refer to FIGURE 47 and FIGURE 48 2 - Use a large flat head screw driver or a 1/2”...
  • Page 33 Heat cable kit Drain Connection is available from Lennox in various lengths; 6 ft. (1.8m) - kit no. 26K68; 24 ft. (7.3m) - kit no. 26K69; and 50 ft. (15.2m) - kit no. 26K70.
  • Page 34 TRAP / DRAIN ASSEMBLY USING 1/2” PVC OR 3/4” PVC Optional Condensate Drain Connection Adapter 3/4 inch slip X 3/4 inch mpt (not furnished) 90° Street Elbow 3/4 inch PVC (not furnished) Adapter 3/4 inch slip X 3/4 inch mpt (not furnished) Condensate Drain Connection In Unit 1 (25 mm) Min.

  • Page 35: Gas Piping

    IMPORTANT Gas Piping CAUTION Compounds used on threaded joints of gas piping must be resistant to the actions of liquified petroleum gases. If a flexible gas connector is required or allowed by the authority that has jurisdiction, black iron pipe shall be Leak Check installed at the gas valve and extend outside the furnace After gas piping is completed, carefully check all piping...
  • Page 36 Left Side Piping AUTOMATIC MANUAL (Standard) GAS VALVE MAIN SHUT-OFF MANUAL (with manual VALVE AUTOMATIC MAIN SHUT-OFF shut-off valve) (1/8 in. NPT GAS VALVE VALVE plugged tap (with manual (1/8 in. NPT shown) shut-off valve) plugged tap shown) GROUND JOINT UNION GROUND JOINT...

  • Page 37: Electrical

    CAUTION Electrical Failure to use properly sized wiring and circuit breaker ELECTROSTATIC DISCHARGE (ESD) may result in property damage. Size wiring and circuit Precautions and Procedures breaker(s) per Product Specifications bulletin (EHB) and CAUTION unit rating plate. Electrostatic discharge can affect electronic The power supply wiring must meet Class I restrictions.
  • Page 38 For optimal performance in non-communicating applica- cooling speed set using thermostat in the installer setup tions, Lennox recommends use of a ComfortSense 7000 mode. The factory default is based upon 400 CFM a ton.
  • Page 39 Communicating Enabled Furnace with Communicating Enabled Furnace with a a Non-Communicating Outdoor Unit Communicating Enabled Outdoor Unit COMMUNICATING FURNACE COMMUNICATING FURNACE OPTIONAL DISCHARGE AIR SENSOR OPTIONAL DISCHARGE AIR SENSOR OPTIONAL OUTDOOR OPTIONAL COMMUNICATING AIR SENSOR OUTDOOR THERMOSTAT AIR SENSOR COMMUNICATING THERMOSTAT DOOR AIR CONDITIONING OR HEAT PUMP UNIT...
  • Page 40 Optional Accessories for use with any Communicating System NOTE: ICOMMUNICATING THERMOSTAT SENSES HUMIDITY & CONTROLS HUM CONTACTS TO CYCLE HUMIDIFIER BASED 120V CONNECTIONS QUIRED. “HUM” CONTACT IS CLOSED ANYTIME HUMIDITY DEMAND IS PRESENT TIONS. BUILT INTO ALL COMMUNICATING ENABLED OUT DOOR UNITS).
  • Page 41 LENNOX COMMUNICATING OUTDOOR UNIT INDOOR UNIT (1 OR 2 STAGE) FLOAT SWITCH LENNOX COMMUNICATING OUTDOOR UNIT LENNOX COMMUNICATING FURNACE EL296V, SL280V, SL280VN, SL297V, SLP99V cutting DS to R will not cause communication interuption or error code CUT* R-DS W914 Page 41...
  • Page 42 TABLE 13 Field Wiring Applications With Conventional Thermostat DIP Switch Settings and On-Board Links DIP Switch 1 On Board Links Must Be Cut To Select Thermostat Thermostat Wiring Connections System Options Heating Stages 1 Heat / 1 Cool FURNACE OUTDOOR T'STAT TERM.
  • Page 43 TABLE 13 CONT. Field Wiring Applications With Conventional Thermostat DIP Switch Settings and On-Board Links DIP Switch 1 On Board Links Must Be Cut To Select Thermostat Thermostat Wiring Connections System Options Heating Stages 2 Heat / 2 Cool FURNACE OUTDOOR T'STAT TERM.
  • Page 44 TABLE 13 CONT. Field Wiring Applications With Conventional Thermostat DIP Switch Settings and On-Board Links DIP Switch 1 Wiring Connections Thermostat On Board Links Must Be Cut To Select Thermostat Heating System Options Stages Dual Fuel FURNACE HEAT PUMP T'STAT TERM.
  • Page 45 TABLE 13 CONT Field Wiring Applications With Conventional Thermostat DIP Switch Settings and On-Board Links DIP Switch 1 Thermostat On Board Links Must Be Cut To Select Wiring Connections Thermostat Heating System Options Stages Dual Fuel FURNACE HEAT PUMP T'STAT TERM.
  • Page 46 EL296DFV Schematic Wiring Diagram FIGURE 59 Page 46...

  • Page 47: Integrated Control

    Integrated Control HS/ CAI LINE 1 NEUTRAL 7 SEGMENT LED FLAME SENSE INDOOR BLOWER DIAGNOSTIC CONNECTOR PUSH BUTTON DIP SWITCHES 12 PIN LOW OUTDOOR AIR VOLTAGE SENSOR CONNECTOR TERMINALS DISCHARGE AIR W915 Y1 TO Y2 SENSOR 2 STAGE COMPR TERMINALS W951 R TO O HEAT PUMP TB83...
  • Page 48 TABLE 14 Integrated Control Switch Settings Conventional Thermostat (non-communicating) Blower Off Delay Switch Settings Blower Off Delay Switch 3 Switch 4 EL296DFV units are equipped with a two-stage, variable Seconds speed integrated control. This control manages ignition timing, heating mode fan off delays and indoor blower 90 (factory) speeds based on selections made using the control dip switches and jumpers.
  • Page 49 Ramping Option D TABLE 17 • Motor runs at 100% until demand is satisfied. Cooling Mode Blower Speed Ramping • Once demand is met, motor ramps down to stop. Ramping Switch 9 Switch 10 A (Factory) 100% CFM COMPRESSOR DEMAND Ramping Option A (Factory Selection) •...
  • Page 50 W914 (R to DS) on SureLight® control With Heat Pump - Cut W914 (R to DS) & W951 (R to O) on SureLight® control Dave Lennox ComfortSense® 7000 thermostat to use for this application - Y2081 4 heat / 2 cool *Dehumidification blower speed is 70% of COOL speed for all units .
  • Page 51 With Heat Pump - Cut W914 (R to DS) & W951 (R to O) on SureLight® control Dave Lennox ComfortSense® 7000 thermostat to use for this application - Y2081 4 heat / 2 cool *Normal operation first stage cooling blower speed is 70% COOL speed.

  • Page 52: Blower Motor Performance

    First stage COOL (two-stage air conditioning units only) is approximately 70% of the same second stage COOL speed position. Continuous Fan Only speed is selectable at 28%, and 38%, of the selected second stage cooling speed - minimum 380 cfm. Lennox iHarmony Zoning System Applications - Minimum blower speed is 380 cfm.
  • Page 53 First stage COOL (two-stage air conditioning units only) is approximately 70% of the same second stage COOL speed position. Continuous Fan Only speed is selectable at 28% and 38% of the selected second stage cooling speed - minimum 380 cfm. Lennox iHarmony Zoning System Applications - Minimum blower speed is 380 cfm.
  • Page 54 First stage COOL (two-stage air conditioning units only) is approximately 70% of the same second stage COOL speed position. Continuous Fan Only speed is selectable at 28% and 38% of the selected second stage cooling speed - minimum 450 cfm. Lennox iHarmony Zoning System Applications - Minimum blower speed is 450 cfm.
  • Page 55 First stage COOL (two-stage air conditioning units only) is approximately 70% of the same second stage COOL speed position. Continuous Fan Only speed is selectable at 28% and 38% of the selected second stage cooling speed - minimum 450 cfm. Lennox iHarmony Zoning System Applications - Minimum blower speed is 450 cfm.

  • Page 56: Unit Start Up

    WARNING Unit Start-Up WARNING If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal Do not use this furnace if any part has been underwater. injury or death. A flood-damaged furnace is extremely dangerous. Gas Valve Operation (FIGURE 61) Attempts to use the furnace can result in fire or explosion.

  • Page 57: Gas Pressure Measurement

    Switch is factory-set and requires no NOTE - Pressure test adapter kit (10L34) is available from adjustment. Lennox to facilitate manifold pressure measurement. 3 - After a 15-second prepurge, the hot surface ignitor 1 - Connect the test gauge positive side “+“ to manifold energizes.

  • Page 58: Proper Combustion / High Altitude

    Proper Combustion High Altitude Furnace should operate minimum 15 minutes with correct NOTE - In Canada, certification for installations at eleva- manifold pressure and gas flow rate before checking com- tions over 4500 feet (1372 m) is the jurisdiction of local bustion.
  • Page 59 8 - If improper venting is observed during any of the Testing of Non-Direct Vent Applications for Proper above tests, the venting system must be corrected Venting and Sufficient Combustion Air or sufficient combustion/make-up air must be provided. The venting system should be re-sized WARNING to approach the minimum size as determined by using the appropriate tables in appendix G in the...

  • Page 60: Heating Sequence Of Operation

    7 - When the demand for high fire (second stage) heat Heating Sequence of Operation is satisfied, the combustion air inducer is switched to Electronic Ignition the low-fire heating speed and the high-fire (second stage) gas valve is de-energized. The low-fire (first The two-stage, variable speed integrated control used stage) gas valve continues operation.

  • Page 61: Service

    5- Check the condition and cleanliness of burners and Annual Furnace Maintenance heat exchanger and clean if necessary. At the beginning of each heating season, and to comply with the Lennox Limited Warranty, your system should be checked as follows: Page 61...
  • Page 62 6- Check the cleanliness of blower assembly and 2 - Verify that system total static pressure and airflow clean the housing, blower wheel and blower motor if settings are within specific operating parameters. necessary . 3 - Clock gas meter to ensure that the unit is operating at 7- Inspect the condensate drain and trap for leaks and the specified firing rate for each stage of operation.

  • Page 63: Program Unit Capacity Size Mode

    Program Unit Capacity/Size Mode Power-Up - Number displayed represents by integrated control unit size code (furnace model − − and capacity). If three horizontal bars are displayed followed by continuous E203, furnace − control does not recognize unit size code. Configure per the following: Furnace control in IDLE mode No heating, cooling or indoor fan operation)
  • Page 64 Requirements for Commonwealth of Massachusetts Modifications to NFPA-54, Chapter 10 4 - INSPECTION. The state or local gas inspector of the side wall, horizontally vented, gas-fueled equipment Revise NFPA-54 section 10.8.3 to add the following shall not approve the installation unless, upon requirements: inspection, the inspector observes carbon monoxide detectors and signage installed in accordance with...

  • Page 65: Repair Parts List

    Repair Parts List The following repair parts are available through Lennox dealers. When ordering parts, include the complete furnace model number listed on the CSA nameplate -- Example: EL296DFV04536B. All service must be performed by a licensed professional installer (or equivalent), service agency, or gas supplier.
  • Page 66 ADDENDUM FOR ALL PROVINCES OF CANADA See below for venting for all provinces of Canada. Lennox approves the following termination for use in all provices of Canada. 12”...

  • Page 67: Start-Up Checklist

    Start-Up & Performance Check List UNIT SET UP (typical) Furnace: Model Number_______________ Serial Number_________________ SUPPLY Line Voltage GAS SUPPLY LP Propane Gas Natural Gas Piping Connections Tight Leak Tested Flter Supply Line Pressure “W.C.________ RETURN AIR Gas Supply Pressure DUCT SYSTEM SUPPLY AIR DUCT Sealed INTAKE / EXHAUST PIPE...
  • Page 68 UNIT OPERATION HEATING MODE COOLING MODE GAS MANIFOLD PRESSURE “W.C._____ INDOOR BLOWER AMPS______ COMBUSTION SAMPLE CO CO PPM_______ TEMPERATURE DROP ______ Return Duct Temperature _________ INDOOR BLOWER AMPS______ Supply Duct Temperature _______ Temperature Drop = _________ TEMPERATURE RISE TOTAL EXTERNAL STATIC (dry coil) Supply Duct Temperature ________ Supply External Static _______ Return Duct Temperature...

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