Determine Type Of Unit Control; To Light Unit; Units With Electro- -Mechanical Control - Carrier 6 User's Information Manual

Always keep the unit's area clear of combustible materials. Do not
obstruct the air openings to the unit.
combustion and ventilation proper operation.
instruction provided in this book for lighting and shutting down
the unit. Should the gas supply fail to shut off or if overheating
occurs, shut off the gas valve to the unit before shutting off the
electrical supply. The following inspections must be completed
post unit installation. The detailed routine maintenance inspections
are in the Maintaining Your Unit section.
Post Unit Installation Inspection:
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.
WARNING
!
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal injury
and/or death.
Improper installation, adjustment, alteration, service or
maintenance can cause injury or property damage. Refer to
this manual. For assistance or additional information, consult
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.
Burners will light automatically. Do not attempt to light by
hand.
Your combination heating/cooling unit is equipped with direct
spark ignition and induced draft power combustion blower.
WARNING
!
FIRE, EXPLOSION 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.
WARNING
!
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal injury,
death and/or property damage.
Do not use this unit if any part has been under water. A
flood- -damaged unit is extremely dangerous. Attempts to use
the unit can result in fire or explosion. A qualified service
agency should be contacted to inspect the unit and replace any
parts that have been wet or the unit, if deemed necessary.

DETERMINE TYPE OF UNIT CONTROL

Air is required for
The procedures used to light or shut off the unit depend on the type
Follow the
of unit control. This section will help determine the control type of
the unit.
Electro- -Mechanical Control
These units may be controlled directly by a thermostat, or
indirectly by a third- -party control that connects to the thermostat
inputs. For direct thermostat control, use the Electro- -Mechanical
Control procedures in this book. For units with third- -party
controls connected to the thermostat inputs, refer to the third- -party
control instructions for procedures to ensure complete unit shut off.
ComfortLinkt Control
These units have a factoryinstalled Carrier ComfortLink control. A
Scrolling Marquee display is located on the front of the unit control
box behind the control box and compressor access door. These
units may be controlled directly by a thermostat, directly by a space
temperature sensor, or indirectly through other Carrier Comfort
Networkr (CCN) communication devices. To ensure complete unit
shut off, use the ComfortLink Control procedures in this book.
(UNITS WITH ELECTRO- -MECHANICAL
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal injury
or death.
1. Do not turn off the electrical power to unit without first
2. Before attempting to start the gas heating section, familiarize
3. Never attempt to manually light the burners on the unit with
See Fig. 1. for location of gas valve. Refer to Fig. 2 while
proceeding with the following steps:
Step 1 —
and set SYSTEM switch to OFF position.
Step 2 —
Step 3 —
lockout tag.
Step 4 —
Step 5 —
to the OFF position an
Step 6 —
ON position.
Step 7 —
Step 8 —
to unit.
Step 9 —
piping.
2

TO LIGHT UNIT

CONTROL)
DANGER
!
turning off the gas supply and applying lockout tags.
yourself with all the procedures that must be followed.
a match, lighter, or any other flame. If the electric sparking
device fails to light the burners, refer to the shutdown
procedures, then call your dealer as soon as possible.
Set room thermostat to the lowest temperature setting
Close the shutoff valve on the gas supply piping.
Turn off the electrical supply to the unit and install
Open the heat section access panel.
Move ON/OFF switch on the internal main gas valve
Move ON/OFF switch on internal main gas valve to
Close the heat section access panel.
Remove lockout tag and turn on the electrical supply
Open the shutoff valve on the external gas supply