User's Manual

ManualsBrandsLennox International Inc. ManualsFurnaceLennox International Inc. Lennox International Inc. Furnace EL180UHE

Page 1

01/13

*2P0113*

507138-01

*P507138-01*

 2013 Lennox Industries Inc.

Dallas, Texas, USA

UPFLOW

HORIZONTAL LEFT HORIZONTAL RIGHT

AIR FLOW

AIR FLOWAIR FLOW

INSTALLATION

INSTRUCTIONS

EL180UHE

ELITE

SERIES GAS FURNACE

UPFLOW / HORIZONTAL AIR DISCHARGE

507138-01

01/2013

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 manuals, be alert

to the potential for personal injury or death.

WARNING

Improper installation, adjustment, alteration, service

or maintenance can cause property damage, person

al injury or loss of life. Installation and service must

be performed by a licensed professional installer (or

equivalent), service agency or the gas supplier.

CAUTION

As with any mechanical equipment, personal injury

can result from contact with sharp sheet metal

edges. Be careful when you handle this equipment.

Table of Contents

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........................................

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 30................................

Start Up Check List 31..............................

Litho U.S.A.

Summary of content (32 pages)

PAGE 1
INSTALLATION INSTRUCTIONS EL180UHE 2013 Lennox Industries Inc. Dallas, Texas, USA ELITE® SERIES GAS FURNACE UPFLOW / HORIZONTAL AIR DISCHARGE 507138-01 01/2013 Litho U.S.A. 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 manuals, be alert to the potential for personal injury or death.
PAGE 2
Unit Dimensions - inches (mm) 1 NOTE − 60C and 60D size units that require air volumes over 1800 cfm (850 L/s) must have one of the following: 1. Single side return air with transition, to accommodate 20 x 25 x 1 in. (508 x 635 x 25 mm) cleanable air filter. Required to maintain proper air velocity. 2. Single side return air with optional Return Air Base 3. Bottom return air. 4. Return air from both sides. 5. Bottom and one side return air. See Blower Performance Tables T for additional information.
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EL180UHE Gas Furnace The EL180UHE unit is shipped ready for installation in the upflow or horizontal right position (for horizontal left posi tion the combustion air pressure switch must be moved) fueled by natural gas. A conversion kit (ordered separate ly) is required for use in LP/Propane gas applications. The furnace is shipped with the bottom panel in place. The bot tom panel must be removed if the unit is to be installed in a horizontal application.
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Installed in Combination with a Cooling Coil When this furnace is used with cooling units, it shall be installed in parallel with, or on the upstream side of, cooling units to avoid condensation in the heating compartment. See figure 1. With a parallel flow arrangement, a damper (or other means to control the flow of air) must adequately pre vent chilled air from entering the furnace.
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Do not install the furnace where drafts might blow direct ly into it. This could cause improper combustion and un safe operation. Do not block the furnace combustion air openings with clothing, boxes, doors, etc. Air is needed for proper combustion and safe unit operation. When the furnace is installed in an attic or other insu lated space, keep insulation away from the furnace. CAUTION Do not install the furnace in a corrosive or contami nated atmosphere.
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separated by a door. Though an area may appear to be un confined, it might be necessary to bring in outdoor air for combustion if the structure does not provide enough air by infiltration. If the furnace is located in a building of tight construction with weather stripping and caulking around the windows and doors, follow the procedures in the air from outside section. Confined Space A confined space is an area with a volume less than 50 cu bic feet (1.42 m3) per 1,000 Btu (.
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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 AIR FURNACE WATER HEATER INLET AIR VENTILATION LOUVERS (For unheated crawl space) NOTE-The inlet and outlet air openings shall each have a free area of at least one square inch (645 mm2) per 4,000 Btu (1.17 kW) per hour of the total input rating of all equipment in the enclosure.
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Upflow Applications Allow for clearances to combustible materials as indicated on the unit nameplate. Minimum clearances for closet or al cove installations are shown in figure 7. Setting Equipment WARNING Do not install the furnace on its front or its back. Do not connect the return air ducts to the back of the fur nace. Doing so will adversely affect the operation of the safety control devices, which could result in per sonal injury or death.
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Return Air -- Upflow Applications Single Side Return Air (with transition and filter) Return air can be brought in through the bottom or either 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. The furnace is equipped with a removable bottom panel to facilitate installation.
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Removing the Bottom Panel Remove the two screws that secure the bottom cap to the furnace. Pivot the bottom cap down to release the bottom panel. Once the bottom panel has been removed, reinstall the bottom cap. See figure 10. Removing the Bottom Panel Horizontal Applications The EL180UHE furnace can be installed in horizontal ap plications. Order horizontal suspension kit (51W10) from Lennox, or use equivalent suspension method.
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Filters CAUTION This unit is not equipped with a filter or rack. A field-pro vided high-velocity filter is required for the unit to operate properly. Table 1 lists recommended filter sizes. If this unit is being installed in a space serviced by an exhaust fan, power exhaust fan, or other device which may create a negative pressure in the space, take care when sizing the inlet air opening.
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Return Air Plenum NOTE - Return air must not be drawn from a room where this furnace, or any other gas-fueled appliance (i.e., water heater), or carbon monoxide producing de vice (i.e., wood fireplace) is installed. UPFLOW POSITION Top Vent Discharge Collector Box Pressure Switch When return air is drawn from a room, a negative pres sure is created in the room. If a gas appliance is operating in a room with negative pressure, the flue products can be pulled back down the vent pipe and into the room.
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UPFLOW POSITION HORIZONTAL LEFT POSITION Left Side Vent Discharge Top Vent Discharge Vent Pipe Cover Plate Pressure Switch Collector Box Make-Up Box Vent Pipe Pressure Switch AIR Flue Transition FLOW Flue Transition AIR Cover Plate FLOW Gas supply piping must be brought into the unit from the right side in order to accommodate the flue pipe.
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nace is an appliance equipped with an integral mechanical means to either draw or force combustion products through the combustion chamber and/or heat exchanger. The EL180UHE is not approved for use with horizontal venting. NOTE - Use these instructions as a guide. They do not su persede local codes.
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VENT CONNECTION UPFLOW AND HORIZONTAL POSITION “DISCONNECTED VENT” WARNING STICKER VENT PIPE (min. 6” length) “DISCONNECTED VENT” WARNING STICKER FLUE TRANSITION COLLAR VENT PIPE (min. 6” length) FLUE TRANSITION COLLAR FIGURE 22 IMPORTANT Common Venting Using Metal-Lined Masonry Chimney SEALED 5 ft. (1.5 m) minimum MAX. LENGTH -- SEE NOTE 1 BELOW. MIN.
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A type B or listed chimney lining system that passes through an unused masonry chimney flue is not considered to be exposed to the outdoors. General Venting Requirements Vent all EL180UHE furnaces according to these instruc tions: 1 - Vent diameter recommendations and maximum allow able piping runs are found in the provided venting tables. 2 - In no case should the vent or vent connector diameter be less than the diameter specified in the provided venting tables.
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9 - If the common vertical vent is offset, the maximum common vent capacity listed in the common venting tables should be reduced by 20%, the equivalent of two 90° elbows (0.80 x maximum common vent capacity). The horizontal length of the offset shall not exceed 1‐1/2 feet (.46 m) for each inch (25 mm) of common vent diameter. 10 - The vent pipe should be as short as possible with the least number of elbows and angles required to com plete the job.
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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 H (feet) 6 8 10 15 20 30 Lateral L (feet) 3 Inch 4 Inch 5 Inch 6 Inch Appliance Input Rating in Thousands of Btu Per Hour MIN MAX MIN MAX MIN MAX MIN MAX 0 0 78 0 152 0 251 0 375 2 13 51 18 97 27 157 32 232 4 21 49 30 94 39 153 50 227 6 25 46 36 91 47 149 59 223 0 0 84 0 165 0 276 0
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TABLE 4 Vent Connector Capacity Type B Double-Wall Vents with Type B Double-Wall Connectors Serving Two or More Category I Appliances Vent Height H (feet) 6 8 10 15 20 30 Vent and Connector Diameter - D (inches) Connector Rise R (feet) 3 Inch 4 Inch 5 Inch 6 Inch Appliance Input Rating in Thousands of Btu Per Hour MIN MAX MIN MAX MIN MAX MIN MAX 1 22 37 35 66 46 106 58 164 2 23 41 37 75 48 121 60 183 3 24 44 38 81 49 132 62 199 1 22 40 35 72 49 114 64
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Resize the common venting system to the minimum vent pipe size determined by using the appropriate tables in Appendix G. (These are in the current stan dards of the National Fuel Gas Code ANSI Z223.1. Removal of the Furnace from Common Vent In the event that an existing furnace is removed from a venting system commonly run with separate gas ap pliances, the venting system is likely to be too large to properly vent the remaining attached appliances.
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TABLE 6 Gas Pipe Capacity - ft3/hr (m3/hr) Nominal Iron Pipe Size inches (mm) Internal Diameter inches (mm) 10 (3.048) 20 (6.096) 30 (9.144) 40 (12.192) 50 (15.240) 60 (18.288) 70 (21.336) 80 (24.384) 90 (27.432) 100 (30.480) 1/2 (12.7) .622 (17.799) 172 (4.87) 118 (3.34) 95 (2.69) 81 (2.29) 72 (2.03) 65 (1.84) 60 (1.69) 56 (1.58) 52 (1.47) 50 (1.42) 3/4 (19.05) .824 (20.930) 360 (10.19) 247 (7.00) 199 (5.63) 170 (4.81) 151 (4.28) 137 (3.87) 126 (3.56) 117 (3.31) 110 (3.
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Horizontal Applications Possible Gas Piping Configurations MANUAL MAIN SHUT-OFF VALVE MANUAL MAIN SHUT-OFF VALVE Horizontal Application Left-Side Air Discharge GROUND JOINT UNION GROUND JOINT UNION DRIP LEG DRIP LEG MANUAL MAIN SHUT-OFF VALVE Horizontal Application Right-Side Air Discharge GROUND JOINT UNION FIELD PROVIDED AND INSTALLED NOTE - BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET DRIP LEG FIGURE 26 Leak Check MANUAL MAIN SHUT-OFF VALVE WILL NOT HOLD NORMAL TEST PRESSURE 1/8 NPT PLUG
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amp can be connected to this terminal with the neutral leg of the circuit being connected to one of the provided neutral terminals. If an accessory rated at greater than one amp is connected to this terminal, it is necessary to use an exter nal relay. INTERIOR MAKE-UP BOX INSTALLATION Right Side One line voltage “HUM” 1/4” spade terminal is provided on the furnace integrated control. See figure 30 for integrated control configuration.
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EL180UHE Schematic Wiring Diagram FIGURE 29 Page 24
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, Heartbeat1 Control powered - displayed during all modes of operation if no errors are detected 1 Reverse Line Voltage Polarity 2 Improper Earth Ground 3 Burner failed to light, or lost flame during heat demand 4 Low Flame Signal - check flame sensor 5 Watchguard - burner failed to light, exceeded maximum number of retries or recycles.
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Unit Start-Up FOR YOUR SAFETY READ BEFORE LIGHTING 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. Immediately call a qualified ser vice technician to inspect the furnace and to replace all gas controls, control system parts, and electrical parts that have been wet or to replace the furnace, if deemed necessary.
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11 - Are flame rollout switches tripped? If flame rollout switches are tripped, call the service technician for in spection. 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 pressure switch proves blower opera tion. Switch is factory-set and requires no adjustment. 3 - After a 15-second prepurge, the hot surface ignitor en ergizes.
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TABLE 10 Manifold Pressure Settings at all Altitudes Model Input Size 045 070 090 110 135 Line Pressure in.wg. Gas 0-2000 ft 2001-4500 ft. 4501-7500 ft 7501 - 10,000 ft Min Max 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 Nat 3.5 3.2 2.8 3.5 4.5 13.0 LP/propane 10.0 10.0 10.0 10.0 11.0 13.0 Nat 3.5 3.2 2.7 3.5 4.5 13.0 LP/propane 10.0 10 9.6 10.0 11.0 13.0 Nat 3.5 3.5 3.0 3.5 4.5 13.0 LP/propane 10.0 10.0 9.6 10.0 11.
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pressure. After one hour of continuous thermostat demand for heat, the Watchguard will re-set and remake thermostat demand to the furnace and automatically reset the inte grated control to begin the ignition sequence. HEAT FAN‐OFF TIME IN SECONDS Service NO JUMPER WARNING To adjust fan-off timing, reposition jumper across pins to achieve desired setting.
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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. Re move the four screws securing the burner manifold as sembly to the vestibule panel and remove the assembly from the unit. 4 - To clean burners, run a vacuum cleaner with a soft brush attachment over the face of burners.
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Start-Up & Performance Check List UNIT SET UP (typical) Unit Model Number_______________ Serial Number___________________ 2 SUPPLY AIR Line Voltage 5 2 upflow furnace shown 1 3 Gas Supply Pressure Filter 1 RETURN AIR 4 1 3 GAS SUPPLY Natural Gas DUCT SYSTEM SUPPLY AIR DUCT LP/Propane Gas Sealed Piping Connections Tight Leak Tested Insulated (if necessary) Supply Line Pressure “ W.C.
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UNIT OPERATION (typical) Combustion CO2 2 SUPPLY AIR Gas Manifold Pressure 7 Thermostat Temperatures 6 upflow furnace shown 1 4 Filter Blower Motor Amps Duct Static 3 RETURN AIR COOLING MODE HEATING MODE 1 GAS MANIFOLD PRESSURE “W.C.