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LEIVIVDX T
C(92006Lennox Industries Inc.
Dallas, Texas, USA
RETAIN THESEINSTRUCTIONS
FOR FUTURE
REFERENCE
INSTALLATION
INSTRUCTIONS
G40UH(X) Series
GAS FURNACE
F]_-_
Technical
505,252M
_L._L Publications
08/2006
Supersedes 505,181M
Lithe U.S.A.
Unit Dimensions
................................
2
G40UH(X) Parts Arrangement
....................
3
G40UH(X) Gas Furnace ..........................
4
Shipping and Packing List ........................
4
Safety Information ...............................
4
General ........................................
5
Combustion, Dilution & Ventilation Air ..............
5
Setting Equipment ...............................
8
Filters ..........................................
12
Duct System ....................................
12
Venting
........................................
12
Gas Piping .....................................
20
Electrical .......................................
21
Unit Start-Up
...................................
25
Gas Pressure Adjustment
........................
26
High Altitude Information
.........................
27
Other Unit Adjustments
..........................
27
Service
........................................
28
Repair Parts List ................................
30
Ignition Control Board Diagnostic Codes
...........
30
Troubleshooting
.................................
31
Start-Up & Performance Check List ................
34
-&WARNING
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.
WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch
any electrical
switch;
do not
use any phone
in your
building.
• Leave the building
immediately.
• 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.
08/06
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505,252M
Page1
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Need help?
Do you have a question about the G40UH Series and is the answer not in the manual?
Questions and answers
what is the tonage and seer rating of this furnace ?
The Lennox G40UH Series furnace is a gas furnace, not an air conditioning unit. Therefore, it does not have a tonnage or SEER rating.
- Tonnage and SEER (Seasonal Energy Efficiency Ratio) are ratings used for air conditioners and heat pumps, not furnaces.
- For furnaces like the G40UH Series, important specifications include BTU input/output, efficiency percentage (AFUE), and installation requirements — but not tonnage or SEER.
Summary:
- Tonnage: Not applicable (furnace, not AC)
- SEER Rating: Not applicable (furnace, not AC)
Would you like me to help you find the BTU sizes and efficiency (AFUE) ratings for the G40UH Series instead?
This answer is automatically generated