GAS FURNACES
USER MANUAL
80+ AFUE High Effi ciency Furnaces
*SA/*TA Upfl ow/Horizontal
*SK/*TK Downfl ow
FIRE OR EXPLOSION HAZARD
• Failure to follow safety warnings exactly
could result in serious injury or property
damage.
• Installation and service must be performed
by a qualifi ed installer, service agency or
the gas supplier.
• Do not store or use gasoline or other
fl ammable vapors and liquids in the
vicinity of this or any other appliance.
READ ALL INSTRUCTIONS THOROUGHLY. KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
92.1%, 95.1% and 97%+ AFUE Models Only
Single Stage, Two-Stage, and Modulating Furnaces
95.1% AFUE Condensing Furnaces
*TC Upfl ow/Horizontal
*TL Downfl ow
97%+ AFUE Modulating Furnaces
*MQ Upfl ow/Horizontal
WARNING:
• 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
neighbors phone. Follow the gas suppliers
instructions.
• If you cannot reach your gas supplier, call
the fi re department.
92.1% AFUE Condensing Furnaces
*SC Upfl ow/Horizontal
*SL Downfl ow
WHAT TO DO IF YOU SMELL GAS