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USER’S INFORMATION 

MANUAL

©2017 Lennox Industries Inc. 
Dallas, Texas, USA

506443-01 

04/2017

Supersedes 10/2015

 WARNING

Improper installation, adjustment, alteration, service 

or maintenance can cause property damage, personal 

injury or loss of life. Installation and service must  be 

performed by a licensed professional HVAC installer or 

equivalent, service agency, or the gas supplier.

 WARNING

FIRE OR EXPLOSION HAZARD.

Failure to follow safety warnings exactly 

could result in serious injury, death, or 

property damage.

Do not store or use gasoline or other flammable 

vapors and liquids in the vicinity of this or any 

other appliance.
Installation and service must be performed 

by a qualified installer, service agency or the 

gas supplier.

WHAT TO DO IF YOU SMELL GAS:

SLP98UHV

SERIES

VARIABLE

CAPACITY

GAS FURNACE

•   Do not try to light any appliance.
•    Do not touch any electrical switch; do not use any 

phone in your building.

•   Leave the building immediatly
•   Immediately call your gas supplier from a neighbor’s 

phone. Follow the gas supplier’s instructions.

• 

 If  you  cannot  reach  your  gas  supplier,  call  the  fire 

department.

Summary of Contents for SLP98DFV SERIES

Page 1: ...y could result in serious injury death or property damage Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance Installation and service mus...

Page 2: ...eration will stop If your home is left unattended for an extended period of time equipment operation must be checked periodically If this is not pos sible the water supply to the house should be shut...

Page 3: ...the building Check that furnace vent and air intake terminal s are not obstructed in any way during all seasons Your furnace is a gas appliance It is critical that the gas supplied to the unit be comp...

Page 4: ...S VALVE SWITCH FIGURE 2 8 Move gas valve switch to ON position See figure 2 9 Replace the outer access panel 10 Tur n on all electrical power to to the unit 11 Se t the thermostat to desired setting N...

Page 5: ...etween base and support Inspect the condensate drain and trap for leaks and cracks The drain and trap must also be cleaned and the trap must be filled with water During a seasonal check the service te...

Page 6: ...haft bearings if applicable 3 Inspect all gas pipe and connections for leaks 4 Check the cleanliness of filters and change if necessary monthly 5 Check the condition and cleanliness of burners and hea...

Page 7: ...ating range Thermal Limits should be checked by restricting airflow and not disconnecting the indoor blower For additional details please see Service and Application Note H049 2 Verify that system tot...

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