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_ 2006 Lennox Industries Inc.
Dallas, Texas, USA
INSTALLATION
INSTRUCTIONS
G61MPV SERIES UNITS
GAS UNITS Technical
505,240M J LJ _.Publications
07/2007 ......
Supersedes 10/2006 Lithe U.S.A.
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
Unit Dimensions ............................... 2
G61MPV Parts Arrangement ..................... 3
Shipping and Packing List ....................... 4
Safety Information .............................. 4
General ....................................... 6
Combustion, Dilution & Ventilation Air ............. 6
Installation - Setting Equipment .................. 9
Filters ........................................ 16
Duct System .................................. 17
Pipe & Fittings Specifications ................... 17
Vent Piping Guidelines ......................... 19
Joint Cementing Procedure ..................... 20
Venting Practices ............................. 21
Gas Piping ................................... 32
Electrical ..................................... 34
Integrated Control Board ....................... 41
Unit Start-Up ................................. 51
Gas Pressure Adjustment ...................... 52
High Altitude Information ....................... 53
Other Unit Adjustments ........................ 55
Service ...................................... 56
Ignition Control Board Diagnostic Codes ......... 57
Troubleshooting ............................... 58
Repair Parts List .............................. 66
Vent Pipe Sizing Worksheet .................... 66
Start-Up & Performance Check List .............. 67
AWARNING
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.
07/07
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