To Shut Unit Off - Carrier 48 Series User's Information Manual

If the pilot fails to light, the main burners fail to light,
or the blower fails to come on, shut down gas heating
section and call your dealer for service. Failure to
follow these requirements could result in serious
personal injury.

TO SHUT UNIT OFF

Do not turn off the electrical power to unit without first
turning off the gas supply.
Failure to follow these procedures can result in
serious fire or personal injury.
See Fig. 1 for location of gas valve. Refer to Fig. 3 while
proceeding with the following steps.
Step 1 —
Set room thermostat to lowest temperature set-
ting and set SYSTEM switch to OFF.
NOTE: High heat consists of sections 1 and 2. Low heat consists of
section 1 only.
48DJ,DK,FJ,FK,JJ,JK034-048
MAIN MANUAL GAS
SUPPLY VALVES
FORCED DRAFT PILOT BURNERS
FAN MOTOR
48MA
Fig. 1 — Heat Section Details
Step 2 —
Close the external manual gas valve.
Step 3 —
Turn off the electrical power supply to the unit.
Step 4 —
Remove the burner compartment access panel.
Step 5 —
Turn the control dial on the internal gas valve
counterclockwise
Step 6 —
Replace the burner compartment access panel.
Step 7 —
If unit is being shut down because of a mal-
function, call your dealer as soon as possible.
If unit is being shut down because the heating season has
ended, restore electrical power to the unit to ensure opera-
tion of the cooling system during the cooling season.
Should overheating occur, or the gas supply fail to shut
off, shut off the manual gas valve to the furnace before shut-
ting off the electrical supply.
Do not use this furnace if any part has been under water.
Immediately call a qualified service technician to inspect the
furnace and to replace any part of the control system and
any gas control which has been under water.
HEAT EXCHANGER
SECTION
MAIN REDUNDANT
GAS VALVES (ZONES)
NOTE: High heat consists of sections 1-3. Low heat consists of sec-
tions 1 and 2 only.
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2
to the OFF position.