Lennox EL280DF - Manual
Lennox EL280DF – Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Table of Contents:
- Page 2 – TOP VIEW
- Page 3 – DANGER; WARNING; EL280DF units are CSA International certified.
- Page 4 – FIGURE 1; AIR HANDLER; Use of Furnace as Construction Heater
- Page 5 – Unconfined Space
- Page 6 – Confined Space; FIGURE 2
- Page 7 – FIGURE 3
- Page 8 – Downflow Installation; CAUTION; Cabinet Width; NOTE − Downflow combustible flooring kit is not used
- Page 9 – Setting Equipment; The unit must be level.
- Page 10 – Filters; TABLE 3
- Page 11 – Duct System; Return Air Plenum; Venting; Modifying or removing the flue transition will; IMPORTANT; VENT CONNECTION
- Page 12 – Venting Using a Masonry Chimney; Common Venting Using Metal−Lined Masonry Chimney; The chimney is currently serving at least one drafthood
- Page 13 – Connector Diameter
- Page 16 – Gas Piping; Gas Supply; NOTE −
- Page 17 – NOTE − Capacity given in cubic feet (m
- Page 18 – Leak Check; than or equal to; Electrical; Precautions and Procedures; INTERIOR MAKE−UP BOX INSTALLATION
- Page 20 – DIP Switch Settings and On−Board Links (See figure 21)
- Page 22 – EL280DF Schematic Wiring Diagram
- Page 23 – Integrated Control; TWO−STAGE INTEGRATED CONTROL; DIP SWITCH FUNCTIONS; This unit may be used
- Page 24 – Unit Start−Up
- Page 25 – Gas Pressure Adjustment; NOTE
- Page 26 – Proper Combustion; ALL; High Fire; High Altitude; Natural; No Change
- Page 27 – Other Unit Adjustments
- Page 28 – Heating Sequence of Operation; Two−Stage Thermostat, Two Stage Heat. Dip Switch
- Page 29 – Service; Blower
- Page 30 – Repair Parts List
- Page 31 – Start−Up & Performance Check List; Gas Supply Pressure; Line Voltage; Filter; upflow furnace shown
- Page 32 – Combustion CO; Temperatures
Page 1
08/12
*2P0812*
506896−01
*P506896-01*
E
2012 Lennox Industries Inc.
Dallas, Texas, USA
DOWNFLOW
AIR FLOW
INSTALLATION
INSTRUCTIONS
EL280DF
MERIT
®
SERIES GAS FURNACE
DOWNFLOW AIR DISCHARGE
506896−01
08/2012
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.
THIS MANUAL MUST BE LEFT WITH THE
HOMEOWNER FOR FUTURE REFERENCE
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
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EL280DF 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
. . . . . . . . . . . . . .
Downflow Installation
8
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting Equipment
9
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Filters
10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Duct System
11
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Venting
11
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gas Piping
16
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical
18
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Integrated Control
23
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Start−Up
24
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gas Pressure Adjustment
25
. . . . . . . . . . . . . . . . . . . . . . . .
Proper Combustion
26
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High Altitude
26
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other Unit Adjustments
27
. . . . . . . . . . . . . . . . . . . . . . . . . .
Heating Sequence of Operation
28
. . . . . . . . . . . . . . . . . . .
Service
29
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repair Parts List
30
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Start Up and Performance Checklist
31
. . . . . . . . . . . . . . .
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Summary
Page 2 Unit Dimensions − inches (mm) 1 − 1/2 (38) Front Panel GAS PIPING INLET (Either Side) FLUE OUTLET (Top) ELECTRICAL INLET (Either Side) RETURN AIR OPENING TOP VIEW A B C D 3/4 (19) 27 − 3/4 (705) 19 − 1/4 (489) 6 − 5/8 (168) Right 7 − 1/8 (181) Left 5 − 3/8 (137) Right 2 − 3/16 (56) Left 33 (8...
Page 3 EL280DF Gas Furnace The EL280DF gas furnace is shipped ready for installationin the downflow position fueled by natural gas. A conver-sion kit (ordered separately) is required for use in LP/Pro-pane gas applications. Shipping and Packing List Package 1 of 1 contains 1 − Assembled EL280DF unit...
Page 4 FIGURE 1 AIR HANDLER GAS UNIT Dampers (open during cooling operation only) Dampers (open during heating operation only) When installed, this furnace must be electrically groundedaccording to local codes. In addition, in the United States,installation must conform with the current National Ele...
