39006DP8-A 5/15/80
Commercial Outdoor
Combination Gas Heating/
Electric Cooling Units
FOR YOUR SAFETY
If you smell gas:
1. Open windows.
2. Don’t touch electrical switches.
3. Extinguish any open flame.
4. Immediately call your gas supplier.
FOR YOUR SAFETY
Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
OPERATION
MAINTENANCE
SERVICE
Congratulations on your wise investment in a
modern, quality, Model 579C Combination Gas Heating/
Electric Cooling Unit. Your heating/cooling unit has been
designed and developed to provide safe, reliable, and
economic operation when properly installed and maintained.
Your year-round air conditioner is a major investment;
therefore, you will expect it to perform at its best. By reading
this manual, you can learn how to operate it, do recom
mended routine maintenance, and what to do if a problem
should arise. Your new unit should perform at the efficiency
level built into it if you will contribute a little of your time
and attention.
NOTE TO INSTALLER: This manual should be left with equipment owner=
Special Instructions to Equipment Owner
NOTE: Retain this manual for future reference.
Your heating/cooling unit must have a supply of fresh
outdoor air circulating around it during both heating and
cooling operation. When the gas heating section is operating,
the unit needs fresh air for proper gas combustion and
proper ventilation. When the cooling section is operating, the
unit needs fresh air for proper airflow through the outdoor
(condenser) coil.
_ygfflNG: Improper installation, adjustment, al-
rajibh, service, maintenance, or use can cause carbon
_ îdè poisoning, explosion, fire, electric shock, or
j^Kher occurrences which may injure you or damage
3Wpfty. Consult a qualified installer, service
“of the gas supplier for information or
Your Comfort System
Your efficient new gas/electric unit not only represents the
very latest in modern engineering development and design
— it is a result of over 70 years of experience in gas-fired
heating systems.
^^^TSjRNINGT'To minimize the possibility of serious
*;»*. personal injury, fire, dam^e to your heating/cooling
unit, or improper unit operation, never violate the
jjaLlfoUowing safety rules:
wavs keep the aresT around your unit free oï
mstiMeJn_aterials, gasoline, and other flam-
jgjiguids and vapors,
Mvéf your^hit, lean anything against it,
Ifash or debris near it, stand on it, or in any
vray block How of fresh outdoor air to your
unit.
ST^eyeF plant trees, lErubbery, or Bowers near
■ycmr unit; and be sure to prevent weeds and/or
pthir^yegetation from growing up around your
^ j-ggg recommended operational and service
Heating/Cooling Unit Identification
MODEL NO.
PRODUCT NO.
SERIAL NO. _
____________________
________________________
In the unit Installation Instructions.)
For your convenience, you or your installer should, or should
have, recorded (printed) the following information that is
applicable to your system:
Operating Your Heating/Cooling Unit
The key to operating your comfort system is the conditioned
space thermostat. A wide variety of thermostats is used, but
all have one main function — to automatically maintain the
temperature in your building at a level required for your
personal comfort, or for a particular application e.g.
computer rooms. The thermostat maintains the indoor
temperature by controlling the operation of the unit. During
the heating season, whenever the temperature around your
thermostat drops below the thermostat temperature setting,
the thermostat automatically starts the heating section.
During the cooling season, whenever the temperature
around your thermostat rises above the thermostat tempera
ture setting, the thermostat automatically starts the cooling
section.
Your conditioned space thermostat has a temperature
control selector for selecting the desired indoor temperature.
It also has a FAN switch with two selections available:
AUTO or ON. When set to AUTO, the blower will operate
only when the thermostat starts the unit. When set to ON, the
DATE INSTALLED
Dealer
NAME
ADDRESS
CITY
STATE .
PHONE
blower will run continuously, regardless of whether the
heating or cooling section is operating.
The SYSTEM switch on your thermostat has the following
selections: HEAT, OFF, and COOL. Some thermostats may
also have a fourth selection — AUTO. The unit will remain
off regardless of the conditioned space temperature when the
SYSTEM switch is set to the OFF position. When set to the
HEAT position, the heating section will operate as required.
With the SYSTEM switch set to the COOL position, the cool
ing section will operate as required.
The SYSTEM switch AUTO selection on some thermostats
provides for automatic changeover between heating and
cooling operation. With the switch set in AUTO position, the
heating section will operate when the conditioned space
temperature drops below the thermostat heating
temperature setting, or the cooling section will operate when
the conditioned space temperature rises above the
thermostat cooling temperature setting.
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ZIP.