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Lennox EL195UHNE Installation Instructions Manual

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© 2022 Lennox Industries Inc.
Dallas, Texas USA
Contents
Unit Dimensions - inches (mm) ......................................2
EL195UHNE Gas Furnace .............................................3
Shipping and Packing List ..............................................3
Safety Information ..........................................................3
Use of Furnace as Construction Heater .........................4
General ...........................................................................4
Combustion, Dilution & Ventilation Air ............................5
Shipping Bolt Removal ...................................................8
Installation - Setting Equipment ......................................8
Filters ............................................................................13
Duct System .................................................................13
Pipe Fittings Specifications...........................................14
Joint Cementing Procedure ..........................................16
INSTALLATION
INSTRUCTIONS
EL195UHNE
ELITE
SERIES GAS FURNACE
®
UPFLOW / HORIZONTAL AIR DISCHARGE
507758-05
03/2022
Supersedes 10/2021
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.
IMPORTANT
DO NOT use the heat exchanger tubes to lift, drag or
pull the furnace to its installation location.
Doing so will damage the tubes causing noise and or
unsafe operation.
Heatexchanger Tubes
Venting Practices ..........................................................16
Vent Piping Guidelines .................................................17
Gas Piping ....................................................................36
Electrical .......................................................................39
Unit Start-Up .................................................................42
Gas Pressure Adjustment .............................................46
Proper Combustion.......................................................46
High Altitude Information ..............................................46
Testing for Venting and Combustion Air........................47
Service..........................................................................48
Repair Parts List ...........................................................50
Start-Up & Performance Check List .............................51
Blower Data ..................................................................53
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Summary of Contents for Lennox EL195UHNE

  • Page 1: Table Of Contents

    INSTALLATION INSTRUCTIONS EL195UHNE © 2022 Lennox Industries Inc. Dallas, Texas USA ELITE SERIES GAS FURNACE ® UPFLOW / HORIZONTAL AIR DISCHARGE 507758-05 03/2022 Supersedes 10/2021 THIS MANUAL MUST BE LEFT WITH THE HOMEOWNER FOR FUTURE REFERENCE This is a safety alert symbol and should never be ignored.

  • Page 2: Unit Dimensions - Inches (Mm)

    EL195UHNE Unit Dimensions - inches (mm) EXHAUST AIR 3-1/4 NOTE - 60C size units that require air volumes over OUTLET (83) 1800 cfm must have one of the following: 1. Single side return air and Optional Return Air Base 1-7/8 (48)

  • Page 3: El195Uhne Gas Furnace

    EL195UHNE Gas Furnace Shipping and Packing List Package 1 of 1 contains The EL195UHNE Category IV gas furnace is shipped ready for installation in the upflow or horizontal position. The furnace is 1 - Assembled EL195UHNE unit shipped with the bottom panel in place. The bottom panel must...

  • Page 4: Use Of Furnace As Construction Heater

    Installed in Combination with a Cooling Coil Use of Furnace as Construction Heater NOTE - If a non-Lennox coil is used, consult the coil’s lit- Construction heat is not allowed with this furnace. erature for the recommended distance from the top of the General furnace cabinet/heat exchanger.

  • Page 5: Combustion, Dilution & Ventilation Air

    When the furnace is installed in an attic or other Combustion, Dilution & Ventilation Air insulated space, keep insulation away from the fur- If the EL195UHNE is installed as a Non-Direct Vent nace. Furnace, follow the guidelines in this section.
  • Page 6 Even a small leak around the base of the unit at the plat- CAUTION form or at the return air duct connection can cause a po- tentially dangerous negative pressure condition. Air for Do not install the furnace in a corrosive or contaminated combustion and ventilation can be brought into the con- atmosphere.
  • Page 7 EQUIPMENT IN CONFINED SPACE - ALL AIR FROM OUTSIDE EQUIPMENT IN CONFINED SPACE (Inlet Air from Crawl Space and Outlet Air to Outside) (Inlet Air from Ventilated Crawlspace and Outlet Air to Outside) VENTILATION LOUVERS Roof Terminated (Each end of attic) Exhaust Pipe ROOF TERMINATED EXHAUST PIPE...

  • Page 8: Shipping Bolt Removal

    INLET AIR (ALTERNATE LOCATION) Upflow Applications The EL195UHNE gas furnace can be installed as shipped NOTE-Each air duct opening shall have a free area of at least one square inch per 2,000 Btu (645mm per .59kW) per hour of the total in the upflow position.
  • Page 9 SETTING EQUIPMENT UPFLOW APPLICATION Place level on blower Place level on the front blower deck screws to check deck to check side to side forward tilt UNIT FRONT AIR FLOW 1/2” max. SIDE VIEW HORIZONTAL APPLICATION UNIT FRONT AIR FLOW 1/2”...
  • Page 10 For no reason should return and supply air duct systems ever be connected to or from EL195UHNE applications which include side return other heating devices such as a fireplace or stove, etc. air and a condensate trap installed on the same side...
  • Page 11 Optional Return Air Base CONDENSATE (Upflow Applications Only) TRAP FURNACE FRONT 23 (584) 3−1/4 IF BASE Overall (83) IS USED (Maximum) Minimum WITHOUT 11 (279) IAQ CABINET, Maximum 22−7/16 INDOOR AIR A SINGLE Unit side return air 14 (356) (570) QUALITY RETURN AIR Opening...
  • Page 12 6 - Continue with exhaust, condensate and intake piping on a platform, as shown in FIGURE 19. A horizontal sus- installation according to instructions. pension kit (51W10) may be ordered from Lennox or use equivalent. NOTE - Heavy-gauge sheet metal straps may be used to suspend the unit from roof rafters or ceiling joists.

  • Page 13: Filters

    Use fiberglass sealing strips, caulking, or equiva- the data given in the appropriate Lennox Product lent sealing method between the plenum and the furnace Specifications bulletin. Additional information is provided cabinet to ensure a tight seal.

  • Page 14: Pipe Fittings Specifications

    CANADA PIPE & FITTING & SOLVENT MARKING CEMENT EL195UHNE exhaust and intake connections are made PVC & CPVC Pipe and Fittings of PVC. Use PVC primer and solvent cement when using PVC vent pipe. When using ABS vent pipe, use PVC &...
  • Page 15 Use PVC primer and solvent cement or ABS solvent ce- Canadian Applications Only - Pipe, fittings, primer and sol- ment meeting ASTM specifications, refer to Table 2. As an vent cement used to vent (exhaust) this appliance must alternate, use all purpose cement, to bond ABS, PVC, or be certified to ULC S636 and supplied by a single manu- CPVC pipe when using fittings and pipe made of the same facturer as part of an approved vent (exhaust) system.

  • 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 DANGER SCHEDULE 40 DANGER OF EXPLOSION! PVC - 5' all other pipe* - 3' Fumes from PVC glue may ignite during system check. Allow fumes to dissipate for at least 5 minutes before placing unit into operation.

  • Page 17: Vent Piping Guidelines

    FIGURE 22 Vent Piping Guidelines Exhaust Piping (FIGURE 23, FIGURE 26 and FIGURE NOTE - Lennox has approved the use of DuraVent® and Centrotherm manufactured vent pipe and terminations as an option to PVC. When using the PolyPro® by DuraVent The vent adapter must be attached to the exhaust cou- or InnoFlue®...
  • Page 18 NOTE - The exhaust collar on all models is sized to ac- Use the following steps to correctly size vent pipe diam- eter. commodate 2” Schedule 40 vent pipe. In horizontal ap- plications, any transition to exhaust pipe larger than 2” Pipe Size Process must be made in vertical runs of the pipe.
  • Page 19 TABLE 5 NOTE - Size intake and exhaust pipe length separately. Values in table are for Intake OR Exhaust, not combined total. Both Intake and Exhaust must be same pipe 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.
  • Page 20 TABLE 5 Continued NOTE - Size intake and exhaust pipe length separately. Values in table are for Intake OR Exhaust, not combined total. Both Intake and Exhaust must be same pipe 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.
  • Page 21 TABLE 6 Maximum Allowable Exhaust Vent Lengths With Furnace Installed in a Closet or Basement Using Ventilated Attic or Crawl Space For Intake Air in Feet NOTE - Additional vent pipe and elbows used to terminate the vent pipe outside the structure must be included in the total vent length calculation.
  • Page 22 TYPICAL EXHAUST AND INTAKE PIPE CONNECTIONS IN UPFLOW DIRECT OR NON-DIRECT VENT APPLICATIONS EXHAUST EXHAUST INTAKE 2” 2” 2” 2” 3” Appliance TRANSITION Appliance Adaptor 2” Adaptor DO NOT transition *2” from smaller to larger 2” 3” pipe in horizontal runs *2”...
  • Page 23 Intake Piping TYPICAL AIR INTAKE PIPE CONNECTIONS The EL195UHNE furnace may be installed in either direct UPFLOW NON−DIRECT vent or non-direct vent applications. In non-direct vent VENT APPLICATIONS applications, when intake air will be drawn into the furnace from the surrounding space, the indoor air quality must be considered and guidelines listed in Combustion, Dilution and Ventilation Air section must be followed.
  • Page 24 The EL195UHNE is then classified as a direct vent, of exhausted air as well as the maximum volume of Category IV gas furnace.
  • Page 25 TABLE 7 Maximum Allowable Exhaust Vent Pipe Length (in ft.) Without Insulation In Unconditioned Space For Winter Design Temperatures Single - Stage High Efficiency Furnace Unit Input Size Winter Design Vent Temp °F (°C) Pipe Diam 32 to 21 2 in (0 to -6) 3 in 20 to 1...
  • 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 8” and EXHAUST PIPE TERMINATION SIZE REDUCTION a minimum distance of 6” with a termination elbow. EL195UHNE Model Termination Pipe Size See FIGURE 44. *040, *060 1-1/2”...
  • 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 FIELD-PROVIDED Accelerator not required REDUCER MAY BE least one bracket must be used within 6” from the for 3”...
  • 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 (USA) Crawl Space and Extended Horizontal Venting KIT 15Z70 Lennox provides kit 51W18 (USA) kit 15Z70 (Canada) to (CANADA) install 2” or 3” PVC exhaust piping through the floor joists and into the crawl space. See FIGURE 47. This kit can also be used as a supplemental drain for installations with condensate run back in the vent pipe (ie.
  • Page 32 Heating cable kit is available from Lennox in various lengths; 6 ft. (1.8m) - kit no. 26K68 and 24 ft. (7.3m) - kit no.
  • Page 33 CONDENSATE TRAP LOCATIONS Condensate Trap With Optional Overflow Switch (Unit shown in upflow position with remote trap) From Evaporator Coil HorizontalFurnace4” Min. to 5” Max.above FieldProvidedVent condensatedrain connection) Min. 1” Above Condensate Drain Connection 1” Min. 2” Max. FurnaceCondensate *5’ max. DrainConnection PV C PipeOnly Optional...
  • Page 34 Furnace with Evaporator Coil Using a Separate Drain (Unit shown in horizontal left-hand discharge position) Field Provided Vent Evaporator (4” min. to 5” max. above Coil condensate connection) 4”min 5”max 5’ max. PVC Pipe Only Condensate Drain Connection (Trap at coil is optional) Drain Pan Piping from furnace and evaporator coil must slope down a minimum 1/4”...
  • Page 35 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 36: Gas Piping

    6 - In some localities, codes may require installation of a Gas Piping manual main shut-off valve and union (furnished by Gas supply piping should not allow more than 0.5”W.C. installer) external to the unit. Union must be of the drop in pressure between gas meter and unit.
  • Page 37 Right Side Piping MANUAL MAIN SHUT-OFF VALVE GROUND JOINT UNION DRIP LEG Gas Valve FIELD PROVIDED AND INSTALLED NOTE - BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET FIGURE 58 Horizontal Applications Possible Gas Piping Configurations Horizontal Application MANUAL MAIN SHUT-OFF Right-Side Air Discharge...
  • Page 38 TABLE 9 Gas Pipe Capacity - ft3/hr (m3/hr) Nominal Internal Length of Pipe - feet (m) Iron Pipe Diameter Size Inches inches (3.048) (6.096) (9,144) (12,192) (15.240) (18.288) (21.336) (24.384) (27.432) (30,480) (mm) (mm) .622 (12.7) (17.799) (4.87) (3.34) (2.69) (2.29) (2.03) (1.84)

  • Page 39: Electrical

    Canadian Electric Code part 1 (CSA standard C22.1) for Canada. A green ground wire is provided in the field make-up box. NOTE - The EL195UHNE furnace contains electronic FIGURE 60 components that are polarity sensitive. Make sure that the furnace is wired correctly and is properly grounded.
  • Page 40 If an accessory rated at greater 2 - When the EL195UHNE is running in the heating than one amp is connected to this terminal, it is necessary mode, the indoor blower will run on the heating speed to use an external relay.
  • Page 41 FIGURE 61 Page 41...

  • Page 42: Unit Start-Up

    Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor. The gas valve on the EL195UHNE is equipped with a gas control switch (lever). Use only your hand to move switch.
  • Page 43 Ignition Control 103217-03 RED LED Flash Code Diagnostic Codes / Status of Furnace No power to control or board fault detected Heartbeat Normal Operation - Idle, Continuous Fan, Cool Continuous Rapid Flash Call For Heat / Burner Operation Reverse Line Voltage Polarity Improper Earth Ground Burner failed to light, or lost flame during heat demand Low Flame Signal - check flame sensor...
  • Page 44 Ignition Control 107163-01 RED LED Flash Code Diagnostic Codes / Status of Furnace No Power to Control or Board Fault Detected Board Fault Detected Fast Heartbeat Call for Heat / Burner Operation Slow Heartbeat Normal Operation – Idle, Continuous Fan, or Cool 1 Flash Reverse Line Voltage Polarity or Phasing of 120V power 2 Flashes...
  • Page 45 Priming Condensate Trap 9 - Replace the access panel. 10- Turn on all electrical power to the unit. The condensate trap should be primed with water prior 11- Set the thermostat to desired setting. to start-up to ensure proper condensate drainage. Either pour 10 fl.

  • Page 46: Gas Pressure Adjustment

    2 - Start unit and allow 5 minutes for unit to reach steady Gas Pressure Adjustment state. Gas Flow (Approximate) 3 - After allowing unit to stabilize for 5 minutes, record manifold pressure and compare to value given in TABLE 11 TABLE 13.

  • Page 47: Testing For Venting And Combustion Air

    9 - After determining that each appliance remaining connected to the common venting system properly After the EL195UHNE gas furnace has been started, the vents when tested as indicated in step 3, return following test should be conducted to ensure proper vent-...

  • Page 48: Service

    Fan Control Blower Speeds Fan On Delay Follow the steps below to change the blower speeds. 1 - Turn off electrical power to furnace. The heat fan on time of 30 seconds is not adjustable. The cool fan on delay is 2 seconds and not adjustable. 2 - Remove blower access panel.
  • Page 49 Check for At the beginning of each heating season, and to comply air leaks on supply and return ducts and seal where with the Lennox Limited Warranty, your system should be necessary. checked as follows:...

  • Page 50: Repair Parts List

    Repair Parts List Blower Parts The following repair parts are available through Lennox dealers. When ordering parts, include the complete fur- Blower wheel nace model number listed on the CSA nameplate -- Ex- Motor ample: EL195UH040NE36B-01. All service must be...

  • Page 51: Start-Up & Performance Check List

    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 52 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...

  • Page 53: Blower Data

    BLOWER DATA EL195UH040NE36B PERFORMANCE (Less Filter) External Air Volume / Watts at Various Blower Speeds Static High Medium-High Medium Medium-Low Pressure Watts Watts Watts Watts Watts in. w.g. 0.00 1450 1280 1190 0.10 1429 1268 1171 0.20 1400 1248 1139 0.30 1377 1222...
  • Page 54 BLOWER DATA EL195UH100NE60C PERFORMANCE (Less Filter) Air Volume / Watts at Different Blower Speeds Single Side Return Air − Air volumes in bold require External Bottom Return Air, Side Return Air with Return Air from Both Optional Return Air Base and field fabricated transition to Static Sides or Return Air from Bottom and One Side.

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