E 2011 Lennox Industries Inc.
Dallas, Texas, USA
UPFLOW |
AIR FLOW |
INSTALLATION
INSTRUCTIONS
SL280UHV
DAVE LENNOX SIGNATURE®
COLLECTION GAS FURNACE
UPFLOW / HORIZONTAL AIR DISCHARGE
506763−01
06/2011Litho U.S.A. Supersedes 03/2011
THIS MANUAL MUST BE LEFT WITH THE HOMEOWNER FOR FUTURE REFERENCE
This 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.
CAUTION
As with any mechanical equipment, personal injury can result from contact with sharp sheet metal
edges. Be careful when you handle this equipment.
AIR FLOW | AIR FLOW |
HORIZONTAL LEFT | HORIZONTAL RIGHT |
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.
NOTICE
A thermostat is not included and must be ordered
separately.
DThe Lennox icomfort Touch® thermostat must be used in communicating applications.
DIn non−communicating applications, the Lennox ComfortSense® 7000 thermostat may be used, as well as other non−communicating thermostats.
In all cases, setup is critical to ensure proper sys- tem operation.
Field wiring for both communicating and non−com-
municating applications is illustrated in diagrams, which begin on Page 27.
Table of Contents
Unit Dimensions | 2 | Electrical | . . . . . . . . . . . . . . . . . . . . . . . . . . . | 25 | |
Parts Arrangement | 3 | Integrated Control Settings | 36 | ||
SL280UHV Gas Furnace | 4 | Blower Performance Data | 39 | ||
Unit Start−Up |
| 51 | |||
Shipping and Packing List | 4 | . . . . . . . . . . . . . . . . . . . . . . . . . . . | |||
Gas Pressure Adjustment | 52 | ||||
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Safety Information | 4 | Proper Combustion . . . | . . . . . . . . . . . . . . . . . . . . . . . . . . . | 52 | |
Use of Furnace as a Construction Heater | 5 | High Altitude | . . . . . . . . . . . . . . . . . . . . . . . . . . . | 53 | |
General | 5 | Other Unit Adjustments | . . . . . . . . . . . . . . . . . . . . . . . . . . | 54 | |
Heating Sequence of Operation | 54 | ||||
Combustion, Dilution & Ventilation Air . . . | 6 | ||||
Service |
| 56 | |||
Setting Equipment | 9 | . . . . . . . . . . . . . . . . . . . . . . . . . . . | |||
Planned Service | . . . . . . . . . . . . . . . . . . . . . . . . . . . | 59 | |||
Filters | 12 | Repair Parts List | . . . . . . . . . . . . . . . . . . . . . . . . . . . | 59 | |
Duct System | 12 | Integrated Control Diagnostic Codes | 60 | ||
Venting | 13 | Program Unit Capacity/Size Mode | 67 | ||
Gas Piping | 23 | Troubleshooting | . . . . . . . . . . . . . . . . . . . . . . . . . . . | 68 | |
06/11 |
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*2P0611* | Page 1 |
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