Page 1
06/12
*2P0612*
507026−01
*P507026-01*
E
2012 Lennox Industries Inc.
Dallas, Texas, USA
AIR FLOW
UPFLOW
AIR FLOW
AIR FLOW
HORIZONTAL RIGHT
HORIZONTAL LEFT
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.
INSTALLATION
INSTRUCTIONS
SLP98UHV
DAVE LENNOX SIGNATURE
®
COLLECTION GAS FURNACE
UPFLOW / HORIZONTAL AIR DISCHARGE
507026−01
06/2012
Supersedes 506610−01
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.
NOTICE
A thermostat is not included and must be ordered
separately.
The Lennox icomfort Touch
®
thermostat must be
used in communicating applications.
In 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 33.
Table of Contents
Unit Dimensions
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Arrangement
3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gas Furnace
4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shipping and Packing List
4
. . . . . . . . . . . . . . . . . . . . . . . .
Safety Information
4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Use of Furnace as a Construction Heater
5
. . . . . . . . . . .
General
6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting Equipment
6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Filters
10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Duct System
11
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pipe and Fittings Specifications
11
. . . . . . . . . . . . . . . . . . .
Joint Cementing Procedure
12
. . . . . . . . . . . . . . . . . . . . . .
Venting Practices
13
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vent Piping Guidelines
13
. . . . . . . . . . . . . . . . . . . . . . . . . .
Gas Piping
28
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical
31
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Integrated Control
39
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Blower Motor Performance
43
. . . . . . . . . . . . . . . . . . . . . . .
Unit Start Up
48
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gas Pressure Measurement
49
. . . . . . . . . . . . . . . . . . . . .
High Altitude Information
51
. . . . . . . . . . . . . . . . . . . . . . . .
Proper Combustion
51
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other Unit Adjustments
51
. . . . . . . . . . . . . . . . . . . . . . . . . .
Heating Sequence of Operation
52
. . . . . . . . . . . . . . . . . .
Service
54
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repair Parts List
55
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Integrated Control Diagnostic Codes
56
. . . . . . . . . . . . . .
Configuring Unit Size Codes
59
. . . . . . . . . . . . . . . . . . . . .
Troubleshooting
60
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Litho U.S.A.