Carrier 48HC User's Information Manual page 2

WARNING
!
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal
injury or death.
What to do if you smell gas:
S Leave the building.
S Do not try to light any appliance.
S Do not touch any electrical switch; do not use any
phone in your building.
S Immediately call your gas supplier from a neighbor's
phone. Follow the gas supplier's instructions.
S If you cannot reach your gas supplier, call the fire
department.
Installation and service must be performed by a
qualified installer, service agency or the gas supplier.
WARNING
!
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal
injury, death and/or property damage.
Do not store or use gasoline or other flammable vapors
and liquids in the vicinity of this or any other appliance.
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury, death and/or property damage.
Before performing maintenance, be sure main power
switch to unit is turned off and lockout tag is installed.
There may be more than one power switch.
WARNING
!
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal
injury, death and/or property damage.
Do not use this equipment if any part has been under
water. A flood- - damaged equipment is extremely
dangerous. Attempts to use the equipment can result in
fire or explosion. A qualified service agency should be
contacted to inspect the equipment and to replace all gas
controls, control system parts, electrical parts that have
been wet or the equipment if deemed necessary.
Your rooftop heating/cooling unit is equipped with an
automatic, direct spark ignitor and an induced- - draft,
combustion blower.
WARNING
!
PERSONAL INJURY HAZARD
Failure to follow this warning could result in personal
injury, death and/or property damage.
Burners will light automatically. Do not attempt to
light by hand.
CAUTION
!
CUT HAZARD
Failure to follow this caution may result in personal
injury.
When removing access
maintenance functions inside your unit, be aware of
sharp sheet metal parts and screws. Although special
care has been taken to reduce sharp edges inside the
unit, be extremely careful when handling parts or
reaching into the unit.
IMPORTANT FACTS
S DO: READ AND UNDERSTAND THIS MANUAL.
S DO: Have your equipment and vent system inspected
annually by a qualified service technician.
S DO: Inspect your filter monthly and clean or replace
when needed.
S DO: Provide adequate airflow to the equipment for
efficient combustion and safe ventilation.
S DO Make sure:
1. All flue and vent connections are clear and free of
obstructions, are leak free, and not damaged.
2. Duct connections are leak free and physically sound.
3. The unit base support is free of cracks, gaps, etc.
4. There are no signs of furnace deterioration.
5. Burners are aligned correctly.
6. Follow routine maintenance inspection.
S DO NOT: Keep combustible materials, gasoline, and other
flammable liquids or vapors around your equipment.
S DO NOT: Cover your equipment in any manner.
S DO NOT: Store anything (including trash or debris)
near your equipment.
S DO NOT: In any way block or restrict airflow around
your equipment.
S DO NOT: Contaminate the air used for combustion of
your equipment with any kind of chemical or fumes. This
could also cause heat exchangers, metal vent systems or
components to deteriorate.
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panels or performing