Lennox EL180UHE - Manuals

Lennox EL180UHE – Manual in PDF format online.

Manuals:

Manual

Manual Lennox EL180UHE

Summary

Page 2 - SUPPLY AIR; FRONT VIEW; Single side return air with transition, to accommodate

Page 2 Unit Dimensions - inches (mm) AIR FLOW 23 (584) (19) 3/4 (19) 1 Bottom Return Air Opening GAS PIPING INLET (Either Side) Side ReturnAir Opening(Either Side) 1 Bottom Return Air Opening FLUE OUTLET (Top) ELECTRICAL INLET (Either Side) SUPPLY AIR OPENING FRONT VIEW SIDE VIEW TOP VIEW A B 9/16 (...

Page 3 - Shipping and Packing List; Package 1 of 1 contains; Safety Information; DANGER; WARNING; Certifications

Page 3 EL180UHE Gas Furnace The EL180UHE unit is shipped ready for installation in theupflow or horizontal right position (for horizontal left position the combustion air pressure switch must be moved)fueled by natural gas. A conversion kit (ordered separately) is required for use in LP/Propane ga...

Page 4 - or; COOL; Heating Unit Installed Upstream of Cooling Coil; Gas Unit; Use of Furnace as Construction Heater

Page 4 Installed in Combination with a Cooling Coil When this furnace is used with cooling units, it shall beinstalled in parallel with, or on the upstream side of, coolingunits to avoid condensation in the heating compartment.See figure 1. With a parallel flow arrangement, a damper (orother means t...

Page 5 - The gas cock must be “T handle” type.; Unconfined Space

Page 5 Do not install the furnace where drafts might blow directly into it. This could cause improper combustion and unsafe operation. Do not block the furnace combustion air openings withclothing, boxes, doors, etc. Air is needed for propercombustion and safe unit operation. When the furnace is i...

Page 6 - Confined Space; FIGURE 2; figures 3 and 4. When communicating with

Page 6 separated by a door. Though an area may appear to be unconfined, it might be necessary to bring in outdoor air forcombustion if the structure does not provide enough air byinfiltration. If the furnace is located in a building of tightconstruction with weather stripping and caulking aroundthe...

Page 7 - FIGURE 3

Page 7 EQUIPMENT IN CONFINED SPACE ALL AIR FROM OUTSIDE (Inlet Air from Crawlspace and Outlet Air to Ventilated Attic) NOTE-The inlet and outlet air openings shall each have a free area of at least one square inch (645 mm 2 ) per 4,000 Btu (1.17 kW) per hour of the total input rating of all equipmen...

Page 8 - Setting Equipment; The unit must be level.; FIGURE 6; Upflow Applications; Upflow Application Installation Clearances; FIGURE 7

Page 8 Setting Equipment WARNING Do not install the furnace on its front or its back. Donot connect the return air ducts to the back of the furnace. Doing so will adversely affect the operation ofthe safety control devices, which could result in personal injury or death. The EL180UHE gas furnace c...

Page 9 - Refer to Engineering Handbook for additional information.; FIGURE 8; Return Air; Transition; Single Side Return Air; SIDE VIEW; SIDE RETURN

Page 9 Return Air -- Upflow Applications Return air can be brought in through the bottom or eitherside of the furnace installed in an upflow application. If thefurnace is installed on a platform with bottom return, makean airtight seal between the bottom of the furnace and theplatform to ensure that...

Page 10 - Screw; Horizontal Applications; Air

Page 10 Removing the Bottom Panel Remove the two screws that secure the bottom cap to thefurnace. Pivot the bottom cap down to release the bottompanel. Once the bottom panel has been removed, reinstallthe bottom cap. See figure 10. Removing the Bottom Panel FIGURE 10 Screw Bottom Panel Bottom Cap Ho...

Page 11 - CAUTION; Filters; IMPORTANT; A filter must be in place any time the unit is operating.; TABLE 1; Duct System; Do not operate the furnace in the heating mode; Supply Air Plenum

Page 11 CAUTION If this unit is being installed in a space serviced byan exhaust fan, power exhaust fan, or other devicewhich may create a negative pressure in the space,take care when sizing the inlet air opening. The inlet air opening must be sized to accommodate themaximum volume of exhausted ai...

Page 12 - Return Air Plenum; Venting; Mounting Screws Location; Top Vent Discharge; - Use tin snips to cut preferred opening on the cabinet

Page 12 Return Air Plenum NOTE - Return air must not be drawn from a roomwhere this furnace, or any other gas-fueled appliance(i.e., water heater), or carbon monoxide producing device (i.e., wood fireplace) is installed. When return air is drawn from a room, a negative pressure is created in the ...

Page 13 - Left Side Vent Discharge; UPFLOW POSITION; Right Side Vent Discharge; HORIZONTAL LEFT POSITION; Side Vent Discharge

Page 13 UPFLOW POSITION Left Side Vent Discharge FIGURE 16 Gas supply piping must be brought into the unit from the right side in order to accommodate the flue pipe. Cut Combustion air inducer tubing from 9” to 8” to avoid inter ference with inducer motor Remove make-up box assembly (2 screws) and ...

Page 14 - HORIZONTAL RIGHT POSITION; Side Vent Discharge - no modifications necessary; Use these instructions as a guide. They do not su; Venting Using a Masonry Chimney

Page 14 HORIZONTAL RIGHT POSITION Top Vent Discharge FIGURE 20 Remove make-up box assembly (2 screws) and cut wire tie to free make-up box wires. Re-install make-up box on other sideof cabinet. Re-secure make-up box wires: Either pull excess wires through the blower compartment and secure using supp...

Page 15 - VENT CONNECTION UPFLOW AND HORIZONTAL POSITION; Common Venting Using Metal-Lined Masonry Chimney; The chimney is currently serving at least one drafthood-

Page 15 FLUE TRANSITION COLLAR VENT PIPE (min. 6” length) “DISCONNECTED VENT” WARNING STICKER FIGURE 22 FLUE TRANSITION COLLAR VENT CONNECTION UPFLOW AND HORIZONTAL POSITION VENT PIPE (min. 6” length) “DISCONNECTED VENT” WARNING STICKER FIGURE 23 Common Venting Using Metal-Lined Masonry Chimney 4 in...

Page 16 - Connector Diameter

Page 16 A type B or listed chimney lining system that passesthrough an unused masonry chimney flue is not consideredto be exposed to the outdoors. General Venting Requirements Vent all EL180UHE furnaces according to these instructions: 1 - Vent diameter recommendations and maximum allow able pipin...

Page 20 - Gas Piping; Gas Supply; If emergency shutoff is necessary, shut off the main

Page 20 Removal of the Furnace from Common Vent In the event that an existing furnace is removed from aventing system commonly run with separate gas appliances, the venting system is likely to be too large toproperly vent the remaining attached appliances. Conduct the following test while each appl...

Page 22 - Horizontal Application; Leak Check; Electrical; Precautions and Procedures

Page 22 GROUND JOINT UNION DRIP LEG MANUAL MAIN SHUT-OFF VALVE GROUND JOINT UNION DRIP LEG MANUAL MAIN SHUT-OFF VALVE GROUND JOINT UNION DRIP LEG MANUAL MAIN SHUT-OFF VALVE Horizontal Applications Possible Gas Piping Configurations Horizontal Application Left-Side Air Discharge Horizontal Applicatio...

Page 23 - INTERIOR MAKE-UP BOX INSTALLATION; Unit nameplate states maximum current draw.; Accessory Terminals

Page 23 INTERIOR MAKE-UP BOX INSTALLATION FIGURE 28 BOX Right Side Refer to figure 29 for schematic wiring diagram, field wiringand trouble shooting. The power supply wiring must meet Class I restrictions.Protected by either a fuse or circuit breaker, select circuitprotection and wire size according...

Page 24 - EL180UHE Schematic Wiring Diagram

Page 24 FIGURE 29 EL180UHE Schematic Wiring Diagram

Page 25 - Integrated Control; RED LED; INTEGRATED CONTROL; TABLE 7

Page 25 Integrated Control RED LED Flash Code Diagnostic Codes / Status of Furnace Off No power to control or board fault detected On Board fault detected, Heartbeat 1 Control powered - displayed during all modes of operation if no errors are detected 1 Reverse Line Voltage Polarity 2 Improper Earth...

Page 27 - Gas Pressure Adjustment; NOTE; Proper Combustion; High Altitude

Page 27 11 - Are flame rollout switches tripped? If flame rollout switches are tripped, call the service technician for inspection. Heating Sequence Of Operation(follow steps below or see Figure 29 for more detail) 1 - When thermostat calls for heat, combustion air blower starts. 2 - Combustion air...

Page 28 - Other Unit Adjustments; After the furnace has been started, and supply and return

Page 28 TABLE 10 Manifold Pressure Settings at all Altitudes Model Input Size Gas 0-2000 ft 2001-4500 ft. 4501-7500 ft 7501 - 10,000 ft Line Pressure in.wg. Min Max 045 Nat 3.5 3.2 3.0 3.5 4.5 13.0 LP/propane 10.0 10.0 10.0 10.0 11.0 13.0 070 Nat 3.5 3.2 2.8 3.5 4.5 13.0 LP/propane 10.0 10.0 10.0 10...

Page 29 - Service

Page 29 HEAT FAN‐OFF TIME IN SECONDS To adjust fan-off timing, reposition jumper across pins to achieve desired setting. NO JUMPER FIGURE 32 60 90 120 180 60 90 120 180 60 90 120 180 60 90 120 180 60 Second off Time 90 Second off Time 120 Second off Time 180 Second off Time Constant Torque Motor EL1...

Page 30 - Repair Parts List

Page 30 2 - Label the wires from gas valve, rollout switches, prima ry limit switch and make-up box then disconnect them. 3 - Disconnect gas supply piping. Remove the screw se curing the burner box cover and remove cover. Remove the four screws securing the burner manifold assembly to the vestib...

Page 31 - Line Voltage; Filter; upflow furnace shown

Page 31 Start-Up & Performance Check List Unit Model Number_______________ Serial Number___________________ UNIT SET UP (typical) Gas Supply Pressure 1 2 2 1 SUPPLY AIR Line Voltage 3 4 5 Filter RETURN AIR RETURN AIR GAS SUPPLY Natural Gas LP/Propane Gas Piping Connections Tight Leak Tested Supp...

Page 32 - Combustion CO; Temperatures

Page 32 Contractor's: Name_________________________Telephone_____________Checklist Completed____________________ Job Address_____-________________________________Technician's Name___________________________________ UNIT OPERATION (typical) 1 HEATING MODE GAS MANIFOLD PRESSURE “W.C._____ COMBUSTION S...