LENNDX
,1,_2000Lennox industries Inc
Daltas, Texas, USA
10GCS
12GCS
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
INSTALLATION
INSTRUCTIONS
10GCS & 12GCS
SERIES UNITS
GAS PACKAGED UNITS (2-5 TONS)
Armstrong # 38152A058
504,245M
08/03
Supersedes 05/00
_pu Technical
blications
Litho U.S.A.
Unit Dimensions ................................ 2
Parts Arrangement ............................. 4
Shipping & Packing List ......................... 4
General ....................................... 4
Requirements .................................. 4
Clearances .................................... 5
Rigging & Setting Unit ........................... 5
Condensate Drain .............................. 6
Filters ......................................... 6
Supply & Return Connections .................... 6
Installing Vent Hood ............................. 6
Combustion Discharge .......................... 6
Compressors .................................. 7
Gas Piping .................................... 7
LPG/Propane Units, Tanks, & Piping .............. 8
Electrical ...................................... 8
Sequence of Operation ......................... 11
Condenser Fan Clearances ..................... 12
Start-up Check List ............................ 13
Heating Start-up ............................... 13
Burner Adjustments ............................ 14
Manifold Gas Pressure Adjustment ............... 14
High Altitude Information ....................... 14
Unit Controls .................................. 14
Maintenance .................................. 15
Troubleshooting ............................... 15
Led Codes & Flash Rates ....................... 16
Repair Parts & Accessories ..................... 16
j -&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.
08/03
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WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Extinguish any open flames.
• Do not touch any electrical switch; do not
use any phone in your building.
• 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.
504,245M
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