Important Notice - Goodman AIR CONDITIONING CONDENSING UNIT 1 THRU 5 TON and GAS FIRED FURNACE Use And Care Instructions Manual

IT IS RECOMMENDED THAT ALL SERVICE BE PERFORMED BY AN AUTHORIZED DEALER. EVEN
ROUTINE MAINTENANCE SHOULD ONLY BE PERFORMED AFTER REVIEW OF PROPER PROCEDURES
WITH THE INSTALLING DEALER.
HOW TO ENJOY LIFE WITH CENTRAL AIR CONDITIONING
The purpose of this USER'S GUIDE is to acquaint you with your central air
conditioning, with air conditioning in general, and to suggest some
procedures which, if followed, will allow your system to function more
effectively.
Your air conditioning unit is made of quality materials and component parts
and is designed and assembled by some of the leading craftsmen in the
industry. The size of your unit has been determined by Chas Roberts Air
Conditioning on the basis of information which has been given to them
concerning the construction of your building and possibly your own living
habits.
Your complete air conditioning system is designed to give you many years of
comfort. Even so you must learn to live with it. Any conditioning system has
its limitations and any equipment will function more effectively and be better
able to give you the comfort you expect if the family knows and follows the
proper procedures.
Many people condemn a home air conditioning system because it doesn't
keep the rooms as cool and comfortable in hot, muggy weather as they think
it should. This may be unfair. Any residential cooling system has definite
limitations. It is the reverse of the heating system. Family living habits that
help the heating system are arch enemies of a cooling system. The furnace
delivers heat into the room and the extraneous heat that is created within the
house form electric lights, cooking, the TV set, etc., helps to heat the rooms.
Just that much less is required from the furnace.
Cooling is just the reverse. The cooling equipment removes heat from the
house and any extra heat released in the rooms from these same sources
will make the room air warmer and place an additional burden upon the
equipment. Further, with heating, we are primarily concerned with the
thermometer temperature and relative humidity (the amount of moisture in
the air). Relative humidity is an important factor in the comfort cooling and
the removal of moisture from the air is essential.
"BALMY" VS. "MUGGY"
The effect of humidity upon comfort can be illustrated by a familiar outdoor
condition. There are days when the temperature is relatively high, yet it is
comfortable because the air feels "balmy". This is because the relative
humidity is low. There are other days when the temperature is about the
same but there is discomfort from a "muggy" feeling and perspiration does
not dry on the skin. This is because the humidity is high.
The same condition can exist indoors. The air must be both cool and
relatively dry for comfort.
NO MYSTERIES ABOUT COOLING
There is nothing very mysterious about the operation of a cooling unit. The
theory in home air conditioning is the same as that used in the electric
refrigerator in your kitchen.
Room air is drawn into the cooling unit by a fan, first passing through a filter
that removes most of the dirt, dust and pollen. It next passes over the
surface of a coil that is cooled by a refrigerant circulating through the inside of
the coil. Here the temperature of the air is reduced about 15-20 degrees and
then discharged through ducts and registers into the rooms.
When this air passes through the coil, it also loses some of its moisture which
collects upon the coil surfaces in the form of water and is wasted to the sewer
by a condensate drain.

IMPORTANT NOTICE

Your unit is designed to remove the maximum amount of heat and moisture:
however, you should never lose sight of the fact that there are definite limits
on its capacity to do either.
ADEQUATE ATTIC VENTILATION IS A MUST
Since the purpose of the cooling is to remove heat from the inside of the
house, the first step should be to keep as much heat as possible from
entering the house. Heat enters the house through walls heated by outdoor
air and the sun. It comes in through the ceiling from the roof or attic above.
When the temperature outside is 90 degrees, it is very possible for your attic
temperature to reach 130 degrees if it is not properly ventilated. You should
have cross ventilation to remove the excessive heat. This is generally
provided in most modern homes.
Attic Fan. An attic fan may be added at one end of the attic to give the
ultimate in attic ventilation. The fan may be thermostatically controlled, or it
may be manually controlled by you.
SHADE AIDS COOLING
Glass areas exposed to the sun are responsible for a very substantial amount
of the heat that enters a house. The sun not only heats the glass but also all
the surfaces indoors that it shines upon. The most effective way to eliminate
this heat is to keep the sun off the glass area and windows. A roof overhang
of two or three feet on the south side of the house will effectively shade the
windows on that side. Exterior awnings and sun shades will offer partial
protection on the east and west sides, and the fewer the window on these two
sides of the house the better. Tall shrubs and plantings, a vine covered trellis
or a garden wall are particularly effective. Screen shades, Venetian blinds
and heavy draperies will also help. A few trees that shade the house are of
inestimable value.
Some of these protective methods will be difficult to provide on an existing
house, be every one that is practical should be used for comfort and for
operating economy. As a matter of information, even the orientation of the
house on the lot can mean much to the cooling system.
THERMOSTAT SETTING
A temperature of seventy-six to seventy-eight degrees is preferred by most
people. You may select a lower temperature setting if you wish and you will
probably have that temperature a good portion of the time. However, do not
be disappointed if the temperature gets a few degrees warmer during A very
hot afternoon. Most residential systems are designed for a maximum cooling
that will maintain the indoor temperature 30 degrees below the normal
outdoor temperature and they cannot do much better than that.
Due to a time lag caused by the insulation in your home, the full radiating
effect of the sun will not be felt until the mid-afternoon. In very hot weather,
you may want to set your thermostat several degrees below the normal
setting so as to store up some cooling capacity for the hot afternoon. Walls,
furniture, and the like will retain some of the additional cooling created by
lower temperature setting, and you will be better prepared for the afternoon
heat.
WHAT CAN YOU DO ON HOT, "MUGGY" DAYS TO OBTAIN MAXIMUM
COMFORT
We have already learned that the function of the air conditioning system is to
remove both heat and moisture from the home. When it is extremely hot and
"muggy" any residential air conditioning system has to work hard to obtain the
differential between indoor and outdoor temperature mentioned in the
paragraph above.