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© 2016 Lennox Industries Inc.
Dallas, Texas USA
Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
EL180UHE Gas Furnace . . . . . . . . . . . . . . . . . . . . . . . . . 3
Shipping and Packing List . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Use of Furnace as a Construction Heater . . . . . . . . . . . 4
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Combustion, Dilution & Ventilation Air . . . . . . . . . . . . . . 5
Setting Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Duct System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
INSTALLATION
INSTRUCTIONS
EL180UHE
507329-01
05/2016
Supersedes 01/2016
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.
As with any mechanical equipment, contact with sharp
sheet metal edges can result in personal injury. Take
care while handling this equipment and wear gloves
and protective clothing.
Table of Contents
Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Integrated Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Unit Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Gas Pressure Adjustment . . . . . . . . . . . . . . . . . . . . . . . . 27
High Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Proper Combustion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Other Unit Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Repair Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Start Up Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Page 1
WARNING
CAUTION
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Related Manuals for Lennox EL180UHE
Summary of Contents for Lennox EL180UHE
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Page 1: Table Of Contents
Electrical ........22 EL180UHE Gas Furnace ......3 Integrated Control . -
Page 2: Unit Dimensions
Air Opening (406) (Either Side) AIR FLOW 1−15/16 (49) (19) (16) 3−1/4 23−1/2 (83) (19) (597) Bottom Return Bottom Return Air Opening Air Opening EL180UHE Model 045(X)36A 14-1/2 13-3/8 4-3/4 070(X)E36B 17-1/2 16-3/8 6-1/4 090(X)E48B 090E60C 19-7/8 19-1/2 110(X)E60C 135E60D... -
Page 3: El180Uhe Gas Furnace
Certifications EL180UHE Gas Furnace EL180UHE units are CSA International certified to The EL180UHE unit is shipped ready for installation in the ANSI Z21.47. upflow or horizontal right position (for horizontal left posi- In the USA, installation of gas furnaces must con- tion the combustion air pressure switch must be moved) form with local building codes. -
Page 4: Use Of Furnace As A Construction Heater
HEAT or COOL setting. EL180UHE units may be used for heating of buildings or structures under construction, if the following conditions Heating Unit Installed Parallell to Air Handler Unit... -
Page 5: Combustion, Dilution & Ventilation Air
EL180UHE furnaces to ensure effi- and other contaminants which can corrode furnace com- cient and safe operation. You must consider combustion ponents. - Page 6 Air from Inside confined, it might be necessary to bring in outdoor air for combustion if the structure does not provide enough air If the confined space that houses the furnace adjoins a by infiltration. If the furnace is located in a building of tight space categorized as unconfined, air can be brought in by construction with weather stripping and caulking around providing two permanent openings between the two spac-...
- Page 7 EQUIPMENT IN CONFINED SPACE ALL AIR FROM OUTSIDE (Inlet Air from Crawlspace and Outlet Air to Ventilated Attic) CHIMNEY OR GAS VENT VENTILATION LOUVERS (Each end of attic) OUTLET WATER FURNACE HEATER INLET VENTILATION LOUVERS (For unheated crawl space) AIR FLOW NOTE-The inlet and outlet air openings shall each have a free area of at least one square inch (645 ) per 4,000 Btu (1.17 kW) per hour of the total input rating of all equipment in the enclosure.
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Page 8: Setting Equipment
Doing so will adversely affect the operation of the safety control devices, which could result in personal injury or death. The EL180UHE gas furnace can be installed as shipped Left Side Right Side in either the upflow position or the horizontal position. Se- lect a location that allows for the required clearances that are listed on the unit nameplate. -
Page 9: Return Air
Return Air -- Upflow Applications Single Side Return Air Return air can be brought in through the bottom or either (with transition and filter) side of the furnace installed in an upflow application. If the furnace is installed on a platform with bottom return, make an airtight seal between the bottom of the furnace and the platform to ensure that the furnace operates properly and safely. - Page 10 Removing the Bottom Panel Horizontal Applications Remove the two screws that secure the bottom cap to the The EL180UHE furnace can be installed in horizontal ap- furnace. Pivot the bottom cap down to release the bottom plications. Order horizontal suspension kit (51W10) from panel.
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Page 11: Filters
Before using any filter with this system, check the specifications provided by the filter manufacturer against the data given in the appropriate Lennox Product Specifications bulletin. Additional information VENT ENTRY... -
Page 12: Venting
Return Air Plenum UPFLOW POSITION NOTE - Return air must not be drawn from a roomwhere Top Vent Discharge this furnace, or any other gas-fueled appliance (i.e., water Vent Pipe heater), or carbon monoxide producing device (i.e., wood Flue Transition fireplace) is installed. - Page 13 UPFLOW POSITION HORIZONTAL LEFT POSITION Left Side Vent Discharge Top Vent Discharge Vent Pipe Cover Plate Collector Box Pressure Make-Up Switch Pressure Switch Vent Pipe Flue Transition FLOW Flue Transition Cover Plate FLOW Gas supply piping must be brought into the unit from the right side in order to accommodate the flue pipe.
- Page 14 HORIZONTAL RIGHT POSITION with an integral mechanical means to either draw or force Top Vent Discharge combustion products through the combustion chamber and/or heat exchanger. The EL180UHE is not approved vent pipe for use with horizontal venting. pressure switch flue transition NOTE - Use these instructions as a guide.
- Page 15 EL180UHE series units. The chimney DO NOT insulate the space between the liner and the passageway must be checked periodically to ensure that chimney wall with puffed mica or any other loose granular it is clear and free of obstructions.
- Page 16 General Venting Requirements and replacement. Vent all EL180UHE furnaces according to these instruc- 7 - Single appliance venting configurations with zero tions: lateral lengths (table 3) are assumed to have 1 - Vent diameter recommendations and maximum no elbows in the vent system.
- Page 17 9 - If the common vertical vent is offset, the maximum 14 - All venting pipe passing through floors, walls, and common vent capacity listed in the common venting ceilings must be installed with the listed clearance tables should be reduced by 20%, the equivalent to combustible materials and be fire stopped of two 90°...
- Page 18 TABLE 3 Capacity of Type B Double-Wall Vents with Type B Double-Wall Connectors Serving a Single Category I Appliance Vent and Connector Diameter - D (inches) Height Lateral 3 inch 4 inch 5 inch 6 inch Appliance Input Rating in Thousands of Btu Per Hour (feet) (feet) NOTE - Single appliance venting configurations with zero lateral lengths are assumed to have no elbows in the vent system.
- Page 19 TABLE 4 Vent Connector Capacity Type B Double-Wall Vents with Type B Double-Wall Connectors Serving Two or More Category I Appliances Vent and Connector Diameter - D (inches) Height Lateral 3 inch 4 inch 5 inch 6 inch Appliance Input Rating in Thousands of Btu Per Hour (feet) (feet) TABLE 5...
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Page 20: Gas Piping
Gas Supply 1 - Seal any unused openings in the common venting system. WARNING 2 - Inspect the venting system for proper size and Do not over torque (800 in-lbs) or under torque (350 in- horizontal pitch. Determine that there is no blockage, lbs) when attaching the gas piping to the gas valve. - Page 21 TABLE 6 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)
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Page 22: Electrical
Horizontal Applications Possible Gas Piping Configurations MANUAL MAIN SHUT-OFF VALVE Horizontal Application MANUAL MAIN SHUT-OFF Left-Side Air Discharge VALVE GROUND JOINT UNION GROUND JOINT DRIP LEG UNION DRIP LEG MANUAL MAIN SHUT-OFF VALVE FIELD PROVIDED GROUND JOINT INSTALLED UNION Horizontal Application NOTE - BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET DRIP LEG Right-Side Air Discharge... - Page 23 Electric Code (ANSI/NFPA No. 70). A green ground wire is provided in the field make-up box. Right Side NOTE - The EL180UHE furnace contains electronic com- ponents that are polarity sensitive. Make sure that the fur- nace is wired correctly and is properly grounded.
- Page 24 FM21 installation instruction or appro- 2 - When the EL180UHE is running in the heating priate dual fuel thermostat instructions. mode, the indoor blower will run on the heating speed.
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Page 25: Integrated Control
Integrated Control RED LED Diagnostic Codes / Status of Furnace Flash Code No power to control or board fault detected Board fault detected, Heartbeat Control powered - displayed during all modes of operation if no errors are detected Reverse Line Voltage Polarity Improper Earth Ground Burner failed to light, or lost flame during heat demand Low Flame Signal - check flame sensor... -
Page 26: Unit Start-Up
The gas valve on the EL180UHE unit is equipped with a Turning Off Gas to Unit gas control switch. Use only your hand to move the switch. -
Page 27: Gas Pressure Adjustment
The maximum car- TABLE 8 bon monoxide reading should not exceed 100 ppm. GAS METER CLOCKING CHART TABLE 9 Seconds For One Revolution EL180UHE Unit CO2% Nat CO2% LP EL180UHE Natuarl LP/Propane -045... -
Page 28: Other Unit Adjustments
TABLE 10 Manifold Pressure Settings at all Altitudes Line Pressure in. wg. Model 7501 - 10,000 0 - 2000 ft. 2001 -4500 ft . 4501 - 7500 ft. Input Size 13.0 LP/Propane 10.0 10.0 10.0 10.0 11.0 13.0 13.0 LP/Propane 10.0 10.0 10.0... -
Page 29: Service
Take care to reconnect wires correctly. Constant Torque Motor Verify proper operation after servicing. EL180UHE units are equipped with a constant torque ECM WARNING motor. It has a DC motor coupled to an electronic control module both contained in the same motor housing. The... - Page 30 9 - Ensure sufficient combustion air is available to the 2 - Verify that system total static pressure and airflow furnace. Fresh air grilles and louvers (on the unit settings are within specific operating parameters. and in the room where the furnace is installed) 3 - Clock gas meter to ensure that the unit is operating must be properly sized, open and unobstructed to at the specified firing rate.
- Page 31 EL180UHE BURNER ASSEMBLY & REMOVAL Ignitor Burner Detail Front View Rollout Switches Cross Over Sensor Retention Rings Manifold And Gas Valve Figure 33 Page 31...
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Page 32: Repair Parts List
Repair Parts List The following repair parts are available through independent Lennox dealers. When ordering parts, include the complete furnace model number listed on the CSA International nameplate -- Example: EL180UH045E36A-01. All service must be performed by a licensed professional installer (or equivalent), service agency, or gas supplier. - Page 33 Start-Up & Performance Check list UNIT SET UP (typical) Unit Model Number_______________ Serial Number___________________ SUPPLY Line Voltage upflow furnace shown Gas Supply Pressure Filter RETURN RETURN DUCT SYSTEM GAS SUPPLY SUPPLY AIR DUCT LP/Propane Gas Natural Gas Sealed Piping Connections Tight Insulated (if necessary) Leak Tested Registers Open and Unobstructed...
- Page 34 UNIT OPERATION (typical) Combustion CO SUPPLY Thermostat Gas Manifold Pressure Temperatures upflow furnace shown Filter Blower Motor Amps Duct Static RETURN RETURN COOLING MODE HEATING MODE INDOOR BLOWER AMPS______ GAS MANIFOLD PRESSURE “W.C._____ TEMPERATURE DROP COMBUSTION SAMPLE CO CO PPM_______ ______ Return Duct Temperature _________ Supply Duct Temperature...