Page 1: Table Of Contents
INSTALLATION INSTRUCTIONS E 2014 Lennox Industries Inc. Dallas, Texas, USA EL195UHE ® ELITE SERIES GAS FURNACE UPFLOW / HORIZONTAL AIR DISCHARGE 507274-01 Litho U.S.A. 07/2014 Supersedes 05/2014 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
EL195UHE Unit Dimensions - inches (mm) EXHAUST AIR 3−1/4 NOTE − 60C and 60D size units that require air OUTLET (83) volumes 1800 cfm or over (850 L/s) must have one of the following 1−7/8 (48) 1. Single side return air with transition, to accommodate 20 x 25 x 1 in.
Page 3: El195Uhe Gas Furnace
EL195UHE Gas Furnace Shipping and Packing List Package 1 of 1 contains The EL195UHE Category IV gas furnace is shipped ready 1 - Assembled EL195UHE unit for installation in the upflow or horizontal position. The fur nace is shipped with the bottom panel in place. The bottom 1 - Bag assembly containing the following: panel must be removed if the unit is to be installed in hori...
Page 4: Use Of Furnace As Construction Heater
Installed in Combination with a Cooling Coil Lennox does not recommend the use of EL195UHE units When this furnace is used with cooling coils (figure 3), it as a construction heater during any phase of construction.
Page 5: General
Air filters must be installed in the system and must be WARNING maintained during construction. Air filters must be replaced upon construction comple The State of California has determined that this prod tion. uct may contain or produce a chemical or chemicals, in very low doses, which may cause serious illness The input rate and temperature rise must be set per the or death.
Page 6 permission from the National Fuel Gas Code (ANSI- When the furnace is installed so that supply ducts carry air Z223.1/NFPA 54). This reprinted material is not the com circulated by the furnace to areas outside the space con plete and official position of the ANSI on the referenced taining the furnace, the return air must be handled by ducts subject, which is represented only by the standard in its en...
Page 7 inch per 2,000 Btu (645mm per .59kW) per total input rat EQUIPMENT IN CONFINED SPACE ing of all equipment in the enclosure (See figure 5).It is also (Inlet Air from Ventilated Crawlspace and Outlet Air to Outside) permissible to bring in air for combustion from a ventilated attic (figure 6) or ventilated crawl space (figure 7).
Page 8 flexible mounting leg). See figure 10. The bolt and washer EQUIPMENT IN CONFINED SPACE - ALL AIR FROM OUTSIDE must be removed before the furnace is placed into op (All Air Through Ventilated Attic) eration. After the bolt and washer have been removed, the rigid leg will not touch the blower housing.
Page 9: Setting Equipment
SETTING EQUIPMENT UPFLOW APPLICATION UNIT UNIT FRONT FRONT AIR FLOW AIR FLOW 1/2” max. FRONT VIEW SIDE VIEW SIDE VIEW HORIZONTAL APPLICATION UNIT FRONT AIR FLOW 1/2” max. END VIEW FRONT VIEW Unit must be level side-to-side. Unit may be positioned from level to 1/2” toward the front to aid in draining. FIGURE 11 Page 9...
Page 10 Return Air Guidelines WARNING Return air can be brought in through the bottom or either Improper installation of the furnace can result in per side of the furnace installed in an upflow application. If the sonal injury or death. Combustion and flue products furnace is installed on a platform with bottom return, make must never be allowed to enter the return air system an airtight seal between the bottom of the furnace and the...
Page 11 Optional Return Air Base (Upflow Applications Only) FURNACE FRONT IF BASE 23 (584) 3−1/4 IS USED Overall (83) (Maximum) WITHOUT Minimum IAQ CABINET, 11 (279) INDOOR AIR A SINGLE Maximum 22−7/16 QUALITY RETURN AIR Unit side return air 14 (356) (570) CABINET PLENUM...
Page 12 19. A horizontal suspension kit (51W10) may be ordered from Lennox or use equivalent. 5 - If necessary, run the condensate line into a conden NOTE - Heavy-gauge sheet metal straps may be used to sate pump to meet drain line slope requirements.
Page 13: Filters
Before using any filter with this system, check the to fit the filter frame. specifications provided by the filter manufacturer against the data given in the appropriate Lennox Pipe & Fittings Specifications Product Specifications bulletin. Additional informa tion is provided in Service and Application Note All pipe, fittings, primer and solvent cement must conform ACC002 (August 2000).
Page 14 CAUTION IMPORTANT Solvent cements for plastic pipe are flammable liq EL195UHE exhaust and intake connections are uids and should be kept away from all sources of made of PVC. Use PVC primer and solvent cement ignition. Do not use excessive amounts of solvent when using PVC vent pipe.
Page 15 TABLE 3 OUTDOOR TERMINATION USAGE* STANDARD KITS CONCENTRIC KITS Flush Wall Kit Wall Ring Kit 1-1/2 inch 2 inch 3 inch Mount Vent 2 inch 3 inch 2 inch Pipe Input Size Field Dia. in. 51W11 71M80 69M29 Fabricated 44J40 (US) 22G44 (US) (US)
Page 16: Joint Cementing Procedure
Venting Practices Joint Cementing Procedure All cementing of joints should be done according to the specifications outlined in ASTM D 2855. Piping Suspension Guidelines DANGER SCHEDULE 40 PVC - 5' DANGER OF EXPLOSION! all other pipe* - 3' Fumes from PVC glue may ignite during system check.
Page 17: Vent Piping Guidelines
NOTE - Exhaust pipe MUST be glued to furnace exhaust fittings. ® NOTE - Lennox has approved the use of DuraVent manu NOTE - Exhaust piping should be checked carefully to make factured vent pipe and terminations as an option to PVC.
Page 18 Use the following steps to correctly size vent pipe diameter. IMPORTANT Pipe Size Process Do not use screens or perforated metal in exhaust or intake terminations. Doing so will cause freeze-ups What is the and may block the terminations. furnace capacity? 045, 070, 090, 110 or 135? Which style termination...
Page 19 TABLE 5 Maximum Allowable Intake or Exhaust Vent Length in Feet 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 Maximum Allowable Intake or Exhaust Vent Length in Feet 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. Standard Termination at Elevation 0 - 4500 ft 2”...
Page 22 TYPICAL EXHAUST AND INTAKE PIPE CONNECTIONS IN UPFLOW DIRECT OR NON-DIRECT VENT APPLICATIONS EXHAUST INTAKE EXHAUST INTAKE 2” 2” 2” 2” 3” 3” TRANSITION TRANSITION 2” 2” *2” *2” DO NOT transition from smaller to larger pipe in horizontal runs of exhaust pipe.
Page 23 Intake Piping TYPICAL AIR INTAKE PIPE CONNECTIONS The EL195UHE 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 INTAKE from the surrounding space, the indoor air quality must be DEBRIS SCREEN considered and guidelines listed in Combustion, Dilution...
Page 24 General Guidelines for Vent Terminations CAUTION In Non‐Direct Vent applications, combustion air is taken If this unit is being installed in an application with from indoors and the flue gases are discharged to the out combustion air coming in from a space serviced by doors.
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 Pipe Temperatures °F (°C) Diameter 2 in. 32 to 21 (0 to -6) 2-1/2 in.
Page 26: Vent Termination Clearances
‡ 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 31...
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 32 Page 27...
Page 28 Details of Intake and Exhaust Piping Terminations for 3”(76mm) MAX. Inches(mm) SIZE TERMINATION Direct Vent Installations PIPE PER TABLE 8. NOTE - In Direct Vent installations, combustion air is taken UNCONDITIONED from outdoors and flue gases are discharged to outdoors. ATTIC SPACE 8”...
Page 29 7 - If intake and exhaust piping must be run up a side wall FIELD-PROVIDED to position above snow accumulation or other ob 1-1/2” (38mm) accelerator REDUCER MAY BE REQUIRED provided on 71M80 & 44W92 structions, piping must be supported. At least one TO ADAPT LARGER VENT kits for EL195UHE045P24B, PIPE SIZE TO TERMINATION...
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 EL195UHE NON-DIRECT VENT APPLICATION Vent Applications USING EXISTING CHIMNEY Exhaust pipes may be routed either horizontally through an SIZE TERMINATION STRAIGHT-CUT OR ANGLE-CUT IN DIRECTION PIPE PER TABLE 8. outside wall or vertically through the roof. In attic or closet OF ROOF SLOPE installations, vertical termination through the roof is pre...
Page 32 Heating cable kit is FIGURE 44 available from Lennox in various lengths; 6 ft. (1.8m) - 5 - Figures 47 and 49 show the furnace and evaporator kit no. 26K68; 24 ft. (7.3m) - kit no. 26K69; and 50 ft.
Page 33 CONDENSATE TRAP LOCATIONS Condensate Trap With Optional Overflow Switch (Unit shown in upflow position with remote trap) From Evaporator Coil Horizontal Furnace 4” Min. to 5” Max.above Field ProvidedVent condensatedrain connection) Min. 1” Above Condensate Drain Connection 1” Min. 2” Max. Furnace Condensate Drain Connection *5’...
Page 34 EL195UHE with Evaporatoir 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 in Gas supply piping should not allow more than 0.5”W.C. staller) external to the unit. Union must be of the drop in pressure between gas meter and unit.
Page 37 Left Side Piping Right Side Piping (Standard) (Alternate) MANUAL MAIN SHUT-OFF MANUAL VALVE MAIN SHUT-OFF VALVE GROUND GROUND JOINT JOINT UNION UNION DRIP LEG Gas Valve Gas Valve DRIP LEG FIELD PROVIDED AND INSTALLED NOTE - BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET FIGURE 54 Horizontal Applications Possible Gas Piping Configurations...
Page 38 TABLE 9 GAS PIPE CAPACITY - FT /HR (kL/HR) Nominal Length of Pipe - feet (m) Internal Iron Pipe Diameter Size inches inches (mm) (3.048) (6.096) (9.144) (12.192) (15.240) (18.288) (21.336) (24.384) (27.432) (30.480) (mm) .622 (12.7) (17.799) (4.87) (3.34) (2.69) (2.29) (2.03)
Page 39: Electrical
The unit is equipped with a field make-up box. The make- Electrical up box may be moved to the right side of the furnace to fa cilitate installation. Secure the excess wire to the existing ELECTROSTATIC DISCHARGE (ESD) harness to protect it from damage. Precautions and Procedures Refer to figure 57 for field wiring, schematic wiring diagram CAUTION...
Page 40 Accessory Terminals Install the room thermostat according to the instruc tions provided with the thermostat. See figure 57 for One line voltage “EAC” 1/4” spade terminal is provided on thermostat designations. If the furnace is being the furnace integrated control. See figure 58 for integrated matched with a heat pump, refer to the FM21 installa...
Page 41 TYPICAL EL195UHE WIRING DIAGRAM FIGURE 57 Page 41...
Page 42: Unit Start Up
Unit Start-Up INTEGRATED CONTROL FOR YOUR SAFETY READ BEFORE OPERATING (Automatic Hot Surface Ignition System) WARNING Do not use this furnace if any part has been under water. A flood-damaged furnace is extremely dan gerous. Attempts to use the furnace can result in fire or explosion.
Page 43 Priming Condensate Trap 9 - Replace the access panel. The condensate trap should be primed with water prior to 10- Turn on all electrical power to to the unit. start-up to ensure proper condensate drainage. Either pour 11- Set the thermostat to desired setting. 10 fl.
Page 44: Gas Pressure Measurement
1 - Connect the test gauge positive side “+“ to manifold Gas Pressure Adjustment pressure tap on gas valve. Gas Flow (Approximate) 2 - Tee into the gas valve regulator vent hose and con TABLE 11 nect to test gauge negative “-”. GAS METER CLOCKING CHART 3 - Start unit and let run for 5 minutes to allow for steady Seconds for One Revolution...
Page 45 TABLE 14 Manifold and Supply Line Pressure 0-10,000ft. Supply Line Manifold Pressure in. wg. Pressure EL195 in. w.g. Unit 0-4500 ft. 4501-5500 ft. 5501-6500 ft. 6501 - 7500ft. 7501 - 10000ft. 0 - 10000 ft. Natural 13.0 Sizes LP/propane 10.0 10.0 11.0 13.0...
Page 46: Testing Combustion Air For Non-Direct Vent
Testing for Proper Venting and Sufficient Combustion Air for Non-Direct Vent Applications horizontal pitch. Determine there is no blockage or re WARNING striction, leakage, corrosion, or other deficiencies which could cause an unsafe condition. CARBON MONOXIDE POISONING HAZARD! 3 - To the extent that it is practical, close all building doors Failure to follow the steps outlined below for each and windows and all doors between the space in appliance connected to the venting system being...
Page 47: Other Unit Adjustments
Other Unit Adjustments HEAT FAN‐OFF TIME IN SECONDS Primary Limit. The primary limit is located on the heating compartment vestibule panel. This limit is factory set and requires no ad justment. NO JUMPER Flame Rollout Switches (Two) To adjust fan-off timing, reposition jumper across pins to These manually reset switches are located in the burner achieve desired setting.
Page 48: Service
Winterizing and Condensate Trap Care Service 1 - Turn off power to the furnace. 2 - Have a shallow pan ready to empty condensate water. WARNING 3 - Remove the clean out cap from the condensate trap and empty water. Inspect the trap then reinstall the ELECTRICAL SHOCK, FIRE, OR EXPLOSION HAZARD.
Page 49: 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: EL195UH045XE36B-01. All service must be performed by a licensed professional installer (or equivalent), service agency, or gas supplier.
Page 50 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 re shall not approve the installation unless, upon inspec quirements: tion, the inspector observes carbon monoxide detec...
Page 51: Start Up Checklist
Start-Up & Performance Check List UNIT SET UP 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 Insulated (if necessary)
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 Supply Duct Temperature _______ AMPS______ Temperature Drop = _________ TEMPERATURE RISE TOTAL EXTERNAL STATIC (dry coil) Supply Duct Temperature ________ Supply External Static _______ Return Duct Temperature...

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