Tabor City tribune., 1963-02-27

DESIGNED INTO EVERY
HEArING AND AIR CON-
DlTIONING SYSTEM WE IN
STALL:
First an accurate load cal
culation is made to determine
me BTU'S necessary to do the
heating job properly and the
size of refrigeration compress
or and cooling coil needed t.
give YOU the proper temper
ature and humidity for sum-
mer comfort. These calculat-
tons may seem to be fairly
simple task, but you can rest
assured that we have elimin-
ated the guess work and alb
Soiutely NO hit and miss me-
thodS are used.
Listed oesow are some of the
things that are carefully ana
lyzed 10 determine the heating
and cooling load in your
building:
WINDOWS: The type OF
windows, their size, how they
are installed. type of glass,
airectionS they face, shading
tCat might be on them at u
particular time of day, storm
windows if used.
WALLS; Materials they are
made of, the wall thickness,
wall insulation if used. area
If walls. what direction they
iacc. permanent shading o:
vail by obstruction. such as
adjacent buildings and roof
yVCrhang.
ROOF: Roof material. mat
criai thickness, color of roof,
is roof flator pitched.
ATTIC: Attic space, type Of
ventilation III attic. amount CT
insulation in attic. type of in
Sulation and the manner in
which 1t is installed.
FLOORS: Floor materials,
floor insulation. if used. height
Of floor from ground, thick
ness of floor.
INTERNAL LOAD: Any heat
producing appliances such AS
lights, stoves. coffee makers.
hair dryers. etc.
PEOPLE: The number of
people. the time Of day the
most people will be in build
ing, the type of activity per-
formed
OUTSIDE AIR BROUGHT
INTO BUILDING: Number
and size of outside doors, the
frequency of their use. exhaust
ans in building. II any
After The listed items have
been analyZed ana the BTU
requirements to heat and cool
yom' building have been de-
tCrminrd. We then select the
yumpUucHtS that will fill your
requirements. with the follow
ing things being considered:
Fuel you have available OF
prefer to Use. Where you want
equipment located and amount
q" space available 10 i00'c
equipment.
Once the size and type Of
equipment has been establish
ed, tn" next operation is To de-
sign a duct distribution system
that will effectively carry Hlc
conditioned air 10 all parts Cf
the building. a properly de
signed duct system is very
important part of the overall
system. The very finest heat
ing and air conditioning equip
mcnt available. If used in con-
junction with an improperly
designed air distribution syS-
tenn. will give very unsatis-
factory results.
Great care should be used in
selecting the location of the
healing and ali conditioning
equipment. 1t should be locat-
ed. when practical, So the duct
system can be installed with
Hlc least amount of turns anC
bends. This will reduce the
tric,iOnai loss and thereby re-
duce the fan power necessary
to move the proper amount OF
air. To reduce duct losses the
heating and air conditioning
equipment should be located
near the center Of the building
when practical.
For quiet operation a low
pressure system should be us
cd and it should be designed
SO the air speed inside the
duct will never exceed 600 It.
per minute. For an extremely
quiet system air speed should
be reduced to around 500 IT,
per minute. The return air
duct should De planned so it
will have enough length that
fan noise won't be transmitted
oack 20 the return air grill.
Supply outlets In rooms should
be located where they won't
be obStructed by drapes, frrm-
iture or other objects.