Lennox EL280UH - Manual
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Table of Contents:
- Page 2 – SUPPLY AIR; FRONT VIEW
- Page 3 – Parts Arrangement; FIGURE 1
- Page 4 – Shipping and Packing List; Package 1 of 1 contains; Safety Information; DANGER; WARNING; Certifications
- Page 5 – Heating Unit Installed Upstream of Cooling Unit; Gas Unit; Use of Furnace as Construction Heater
- Page 6 – Product contains fiberglass wool.; CAUTION
- Page 7 – FIGURE 3
- Page 8 – FIGURE 4
- Page 9 – Setting Equipment; The unit must be level.; Upflow Applications; Upflow Application Installation Clearances; FIGURE 8
- Page 10 – − Single side return air with transition to accommodate 20; Refer to Engineering Handbook for additional information.; Transition; Single Side Return Air; SIDE VIEW; SIDE RETURN
- Page 11 – Horizontal Applications
- Page 12 – Filters; TABLE 1; Duct System; NOTE −
- Page 13 – Venting; Mounting Screws Location; UPFlow Position; Top Vent Discharge; IMPORTANT; − Remove the four mounting screws which secure the; Left Side Vent Discharge; UPFLOW POSITION; Right Side Vent Discharge
- Page 14 – Horizontal Position; HORIZONTAL LEFT POSITION; Side Vent Discharge; HORIZONTAL RIGHT POSITION
- Page 15 – VENT CONNECTION UPFLOW AND HORIZONTAL POSITION
- Page 16 – Common Venting Using Metal−Lined Masonry Chimney; General Venting Requirements
- Page 17 – TABLE 2; Connector Diameter
- Page 23 – Gas Piping; Gas Supply; NOTE − Capacity given in cubic feet (m
- Page 24 – Horizontal Application
- Page 25 – Leak Check; Electrical; Precautions and Procedures
- Page 27 – DIP Switch Settings and On−Board Links (See figure 33)
- Page 29 – EL280UH SCHEMATIC WIRING DIAGRAM
- Page 30 – DIP SWITCH FUNCTIONS
- Page 31 – Integrated Control; Select OFF
- Page 32 – Unit Start−Up
- Page 33 – Gas Pressure Adjustment; NOTE; Proper Combustion; ALL; High Altitude
- Page 34 – Manifold Pressure Settings at all Altitudes; Natural; Pressure Switch and Gas Conversion Kits at all Altitudes; No Change
- Page 35 – Other Unit Adjustments
- Page 36 – Heating Sequence of Operation; Two−Stage Thermostat, Two Stage Heat. Dip Switch
- Page 37 – BLOWER DATA
- Page 39 – Service; Blower
- Page 43 – Integrated Control Diagnostic Codes; FLASH CODE
- Page 44 – Troubleshooting: Heating Sequence of Operation; HEATING SEQUENCE OF OPERATION; CONTINUED ON NEXT PAGE
- Page 46 – CONTINUED
- Page 48 – Troubleshooting: Cooling Sequence of Operation; COOLING SEQUENCE OF OPERATION
- Page 49 – Troubleshooting: Continuous Fan Sequence of Operation; CONTINUOUS LOW SPEED FAN SEQUENCE OF OPERATION
- Page 50 – Start−Up & Performance Check List; Gas Supply Pressure; Line Voltage; Filter; upflow furnace shown
- Page 51 – Combustion CO; Temperatures
Page 1
02/12
*2P0212*
506894−01
*P506894-01*
E
2012 Lennox Industries Inc.
Dallas, Texas, USA
UPFLOW
HORIZONTAL LEFT
HORIZONTAL RIGHT
AIR FLOW
AIR FLOW
AIR FLOW
INSTALLATION
INSTRUCTIONS
EL280UH
ELITE
®
SERIES GAS FURNACE
UPFLOW / HORIZONTAL AIR DISCHARGE
506894−01
02/2012
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
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Arrangement
3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EL280UH Gas Furnace
4
. . . . . . . . . . . . . . . . . . . . . . . . . .
Shipping and Packing List
4
. . . . . . . . . . . . . . . . . . . . . . . .
Safety Information
4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Use of Furnace as a Construction Heater
5
. . . . . . . . . . .
General
5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Combustion, Dilution & Ventilation Air
6
. . . . . . . . . . . . . .
Setting Equipment
9
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Filters
12
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Duct System
12
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Venting
13
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gas Piping
23
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical
25
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Integrated Control
31
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Start−Up
32
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gas Pressure Adjustment
33
. . . . . . . . . . . . . . . . . . . . . . . .
High Altitude
33
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Proper Combustion
33
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other Unit Adjustments
35
. . . . . . . . . . . . . . . . . . . . . . . . . .
Sequence of Operation
36
. . . . . . . . . . . . . . . . . . . . . . . . . .
Blower Performance Data
37
. . . . . . . . . . . . . . . . . . . . . . . .
Service
39
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Planned Service
42
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repair Parts List
42
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Integrated Control Diagnostic Codes
43
. . . . . . . . . . . . . . .
Troubleshooting
44
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Summary
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 Return Air Opening (Either Side) 1 Bottom Return Air Opening FLUE OUTLET (Top) ELECTRICAL INLET (Either Side) SUPPLY AIR OPENING FRONT VIEW SIDE VIEW TOP VIEW AB 9/16 ...
Page 3 Parts Arrangement FIGURE 1 Combustion Air Pressure Switch Combustion Air Inducer Gas Valve and Manifold Assembly Limit Switch (under collector box) Collector Box Heat Exchanger Integrated Control Indoor Blower and Motor Assembly (removed from cabinet) Indoor Blower and Motor Assembly (install...
Page 4 EL280UH Gas Furnace The EL280UH unit is shipped ready for installation in theupflow or horizontal right position (for horizontal left posi-tion the combustion air pressure switch must be moved).The furnace is shipped with the bottom panel in place. Thebottom panel must be removed if the unit ...
