Page 1: Table Of Contents
INSTALLATION INSTRUCTIONS E 2012 Lennox Industries Inc. Dallas, Texas, USA EL195UHE ® ELITE SERIES GAS FURNACE UPFLOW / HORIZONTAL AIR DISCHARGE 507080−01 Litho U.S.A. 08/2012 Supersedes 506736−01 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 bot- 1 −...
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 shall as a construction heater during any phase of construction.
Page 5: General
Air filters must be installed in the system and must be CAUTION maintained during construction. Air filters must be replaced upon construction comple- EL195UHE unit should not be installed in areas nor- tion. mally subject to freezing temperatures. The input rate and temperature rise must be set per the furnace rating plate.
Page 6 In the absence of local codes concerning air for combus− Confined Space tion and ventilation, use the guidelines and procedures in A confined space is an area with a volume less than 50 cubic this section to install EL195UHE furnaces to ensure effi- feet (1.42 m ) per 1,000 Btu (.29 kW) per hour of the com−...
Page 7 or by ducts with the outdoors or spaces (crawl or attic) that EQUIPMENT IN CONFINED SPACE freely communicate with the outdoors or indirectly (Inlet Air from Ventilated Crawlspace and Outlet Air to Outside) through vertical ducts. Each opening shall have a mini- mum free area of 1 square inch per 4,000 Btu (645mm per 1.17kW) per hour of total input rating of all equipment in the enclosure.
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 23 (584) IF BASE 3−1/4 Overall IS USED (83) (Maximum) WITHOUT Minimum 11 (279) IAQ CABINET, INDOOR AIR A SINGLE Maximum 22−7/16 QUALITY Unit side return air RETURN AIR 14 (356) (570) CABINET PLENUM...
Page 12 19. A horizontal suspension 4 − Route auxiliary drain line so that water draining from kit (51W10) may be ordered from Lennox or use equiva- lent. this outlet will be easily noticed by the homeowner.
Page 13: Filters
5 − If necessary, run the condensate line into a conden- Supply Air Plenum sate pump to meet drain line slope requirements. The If the furnace is installed without a cooling coil, a removable pump must be rated for use with condensing furnaces. access panel should be installed in the supply air duct.
Page 14 TABLE 2 IMPORTANT PIPING AND FITTINGS SPECIFICATIONS Schedule 40 PVC (Pipe) D1785 EL195UHE exhaust and intake connections are Schedule 40 PVC (Cellular Core Pipe) F891 made of PVC. Use PVC primer and solvent cement Schedule 40 PVC (Fittings) D2466 when using PVC vent pipe. When using ABS vent Schedule 40 CPVC (Pipe) F441 pipe, use transitional solvent cement to make con-...
Page 15: Joint Cementing Procedure
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. 71M80 69M29 Fabricated 44J40 22G44 (US) (US) (US) 60L46 (US)
Page 16: Venting Practices
8 − After assembly, wipe excess cement from pipe at end REPLACING FURNACE THAT of fitting socket. A properly made joint will show a CHIMNEY WAS PART OF A COMMON OR GAS bead around its entire perimeter. Any gaps may indi- VENT VENT SYSTEM (Check sizing...
Page 17: Vent Piping Guidelines
See table 3.. In some applications which permit the use of several differ- ent sizes of vent pipe, a combination vent pipe may be used. Contact Lennox’ Application Department for assis- Which needs tance in sizing vent pipe in these applications.
Page 18 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 −...
Page 19 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.
Page 20 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 −...
Page 21 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 22 Intake Piping TYPICAL AIR INTAKE PIPE CONNECTIONS The EL195UHE furnace may be installed in either direct UPFLOW NON−DIRECT VENT APPLICATIONS vent or non−direct vent applications. In non−direct vent 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 23 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 24 TABLE 7 Maximum Allowable Exhaust Vent Pipe Length 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 2−1/2 in. 0 to −6) 3 in.
Page 25: 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 30...
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 31 Page 26...
Page 27 Details of Intake and Exhaust Piping Terminations for Exiting Exhaust and Intake Vent Direct Vent Installations (no common pressure zone) NOTE − In Direct Vent installations, combustion air is tak- en from outdoors and flue gases are discharged to out- doors.
Page 28 When exhaust and intake piping must be run up an 8 − A multiple furnace installation may use a group of up to outside wall, the exhaust piping must be terminated four terminations assembled together horizontally, as with pipe sized per table 8.The intake piping may be shown in figure 41.
Page 29 FIELD FABRICATED WALL TERMINATION OR FIELD FABRICATED WALL TERMINATION OR (15F74) WALL RING TERMINATION KIT (15F74) WALL RING TERMINATION KIT With INTAKE ELBOW NOTE − FIELD−PROVIDED NOTE − FIELD−PROVIDED REDUCER MAY BE REDUCER MAY BE 1/2" (13mm) ARMAFLEX 1/2" (13mm) ARMAFLEX REQUIRED TO ADAPT REQUIRED TO ADAPT INSULATION IN UN-...
Page 30: Front View
2" EXTENSION FOR 2" PVC PIPE1" EXTENSION FOR 3" 12" PVC PIPE EXHAUST (305mm) FURNACE VENT 5−1/2" 5" (140mm) EXHAUST (127mm) 4’’ INTAKE PIPE 18" MAX. FURNACE Front View (457mm) INTAKE PIPE EXHAUST VENT 12" (305mm) Min. GLUE EXHAUST above grade or END FLUSH INTO average snow TERMINATION...
Page 31 WALL TERMINATION KITS (CLOSE−COUPLE) EXTENDED VENT FOR GRADE CLEARANCE 2 inch (51 mm) 22G44 (US) 3 inch (76 mm) 44J40 (US) If intake and exhaust pipe is less than 12 in. (305 mm) above snow accumulation or other obstructions, field− fabricated piping must be installed.
Page 32 EL195UHE DIRECT VENT APPLICATION 12" (305mm) MAX. for 2" (51mm) 20" (508mm) MAX. for 3" (76mm) USING EXISTING CHIMNEY 1/2" (13mm) ARMAFLEX STRAIGHT−CUT OR INSULATION IN ANGLE−CUT IN DIRECTION 3"−8" UNCONDITIONED SPACE 1/2" (13mm) OF ROOF SLOPE * (76mm−203mm) ARMAFLEX FIELD−PROVIDED INSULATION REDUCER MAY...
Page 33 CONDENSATE TRAP AND PLUG LOCATIONS EL195UHE NON−DIRECT VENT APPLICATION (Unit shown in upflow position) USING EXISTING CHIMNEY Trap SIZE TERMINATION STRAIGHT−CUT OR (same on ANGLE−CUT IN DIRECTION PIPE PER TABLE 8. OF ROOF SLOPE right side) 1−1/2 in. EXHAUST VENT 1/2"...
Page 34 If this is not possible, a heat cable kit may be used on the condensate trap and line. Heating cable kit is available from Lennox in various lengths; 6 ft. (1.8m) − Field Provided Vent kit no. 26K68; 24 ft. (7.3m) − kit no. 26K69; and 50 ft.
Page 35 EL195UHE with Evaporator IMPORTANT Coil Using a Common Drain When combining the furnace and evaporator Evaporator drain coil drains together, the A/C condensate drain line required outlet must be vented to relieve pressure in or- der for the furnace pressure switch to operate properly.
Page 36 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 37: 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. drop staller) external to the unit. Union must be of the in pressure between gas meter and unit.
Page 38 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 60 Horizontal Applications Possible Gas Piping Configurations...
Page 39 TABLE 10 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 40: Electrical
Complete the wiring connections to the equipment. Use the Electrical provided unit wiring diagram and the field wiring diagram shown in figure 63. Use 18−gauge wire or larger that is suit- ELECTROSTATIC DISCHARGE (ESD) able for Class II rating for thermostat connections. Precautions and Procedures Electrically ground the unit according to local codes or, in the absence of local codes, according to the current Na-...
Page 41 Generator Use − Voltage Requirements 63 Hz). D The furnace integrated control requires both polarity The following requirements must be kept in mind when and proper ground. Both polarity and proper grounding specifying a generator for use with this equipment: should be checked before attempting to operate the D The furnace requires 120 volts + 10% (Range: 108 furnace on either permanent or temporary power.
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 11− Set the thermostat to desired setting. pour 10 fl.
Page 44: Gas Pressure Measurement
3 − While waiting for the unit to stabilize, observe the Gas Pressure Adjustment flame. Flame should be stable and should not lift from Gas Flow (Approximate) burner. Natural gas should burn blue. 4 − After allowing unit to stabilize for 5 minutes, record TABLE 12 manifold pressure and compare to value given in table GAS METER CLOCKING CHART...
Page 45 TABLE 15 LP/Propane Conversion Kit and Pressure Switch Requirements at Varying Altitudes High Altitude High Altitude Natural to Natural Burner LP/Propane Burner High Altitude Pressure Switch LP/Propane EL195 Orifice Kit Orifice Kit Unit 0 − 7500 ft 7501 − 10,000 ft 7501 −...
Page 46: 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 47: 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 48: 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 49: 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 50 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 51 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- For all side wall, horizontally vented, gas−fueled equipment...

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