Carrier 58MCA - Electrostatic Discharge (ESD) Precautions

5
• CHECK AIR FILTER: Before attempting to start your
furnace, be sure the furnace filter is clean and in place. See
“Performing Routine Maintenance” section in this manual.
Then proceed as follows:
STEPS FOR STARTING YOUR
FURNACE
1. Set your room thermostat to the lowest temperature set-
ting. (See Fig. 8.)
2. Close the external manual gas valve. (See Fig. 9.)
8
910
3. Turn OFF electrical supply to the furnace. (See Fig. 10.)
4. Remove control access door. (See Fig. 11.)
11
12
5. The gas valve will have EITHER a control knob or con-
trol switch to turn off and on. Turn the control knob or
switch on the gas valve to the OFF position and wait
5 minutes. (See Fig. 12 or 13.)
6. After waiting 5 minutes, turn the control knob or switch
on the gas valve to the ON position. (See Fig. 14 or 15.)
13
14
15
WARNING
If overheating occurs or the gas valve fails to shut
off the gas supply, turn off the manual gas valve to
the furnace BEFORE turning off the electrical sup-
ply. (See Fig. 9.) Failure to follow this warning
could result in a fire or explosion, and personal in-
jury or death.
!
®
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E
O
F
F
2
3
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P
ON
O
F
F
C
ON
OFF
OR
F
F
O
O
F
F
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M
P
ON
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OR
ON