E 2006 Lennox Industries Inc.
Dallas, Texas, USA
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other ap-
pliance.
Installation and service must be
performed by a qualified installer,
service agency or the gas supplier.
05/09
*2P0509*
INSTALLATION
INSTRUCTIONS
G50UH(X) Series
GAS FURNACE
505,254M
05/2009
Supersedes 08/2006
Table of Contents
Troubleshooting
Start−Up & Performance Check List
WARNING
FIRE OR EXPLOSION HAZARD.
Failure to follow safety warnings exact-
ly could result in serious injury, death,
or property damage.
WHAT TO DO IF YOU SMELL GAS:
D Do not try to light any appliance.
D Do not touch any electrical switch; do not
use any phone in your building.
D Leave the building immediately.
D Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions.
D If you cannot reach your gas supplier, call
the fire department.
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*P505254M*
Litho U.S.A.
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505,254M
Need help?
Do you have a question about the G50UH Series and is the answer not in the manual?
Questions and answers
Does the filter ever need cleaning?
Yes, the filter in the Lennox G50UH Series should be inspected monthly and cleaned or replaced when necessary to ensure proper furnace operation.
This answer is automatically generated
What is the burner capacity forG5OUH-48C-110-05 Furnace; S/No. 5803H 14822
The burner capacity (input) for the Lennox G50UH-48C-110-05 furnace is 110,000 Btuh.
This answer is automatically generated
I have a 2000 sq ft home im looking for what size condenser to get for the g50uh-36b-090-03 unit