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Cancels: OM11-19 OM11-22
3/15/02
Your rooftop combination heating/cooling unit is equipped
with an automatic direct-spark ignition and induced-draft
combustion blower.
TO LIGHT UNIT
See Fig. 1 for location of gas valve. Refer to Fig. 2 while
proceeding through the following steps.
I. Step 1
Set room thermostat to the lowest temperature setting and
set SYSTEM switch to HEAT or AUTO. position.
II. Step 2
Close the manual gas valve.
III. Step 3
Turn off the electrical supply to the unit and install lockout
tag.
IV. Step 4
Remove the burner access panel.
V. Step 5
Move the control on the gas valve to the OFF position and
wait 5 minutes.
VI. Step 6
Move control on gas valve to ON position.
NOTE TO INSTALLER:
This manual should be left with the equipment owner.
WARNING: If the information in this manual
is not followed exactly, a fire or explosion
may result causing property damage, per-
sonal injury or loss of life.
— Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do
not use any phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas sup-
plier’s instructions.
• 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: Improper installation, adjustment,
alteration, service, or maintenance could cause prop-
erty damage, serious injury or death. Refer to this
manual. For assistance or additional information,
consult a qualified installer, service agency, or the
gas supplier.
WARNING: Before performing recommended
maintenance, be sure main power switch to unit is
turned off. Electrical shock could cause serious injury
or death.
WARNING: Do not attempt to light by hand; seri-
ous injury or death may result.
WARNING:
1. Do not attempt to light by hand; personal injury
may result.
2. Before attempting to start the gas heating sec-
tion, familiarize yourself with all the proce-
dures that must be followed.
If you do not follow these instructions exactly, a fire or
explosion may result. Property damage, injury, or loss
of life could occur.
user’s information manual
SINGLE PACKAGE ROOFTOP
GAS HEATING/
ELECTRIC COOLING UNITS
581B
DuraPac Plus Series
Sizes 036-150
3 to 12
1
/
2
Tons
Fig. 1 — Typical Gas Valve Location
(581B090 Shown)