Coleman 7600 - Application; Roof Jack

The
perlormance
of a
heating or cooling
system
depends
lirst of all
on
the
quality of the
equipment;
secondly,
on
the design
of the
distribution
and
return
air slstem;
and
last but
not
least. the workmanship
Lrsed
in installing
thc
s1'51sm.
The best
of equipment,
r.r'hen
improperly
installed,
will
not deliver
satisfactory
performance to the
customer.
When the application
ol'
heating equipment
or cooling
equipment
is
to
be
made, the
procedure
to
use
in
the
selection
and application
is as follows:
L
Calculate
the
heating or cooling
load.
2. Sclect equipment.
3.
Double check
equipment
blower
capacities.
CALCULATINC
THE SYSTEM
LOAD
To
insure correct
systcm
sizing,
a
survev
should
bc
made
of the
structure
to be
air conditioned'
-fhe
heat
loss
and
heat
gain
should
be calculated
in accordunce
with the
procedure
contained
in
the
Natitlnal
Warm
Air
Heating and
Air Conditioning
Association
Manual J.
COMPLY
WITH LOCAI, CODES
The
installer should
familiarize
himself with and
com-
ply
with all
local codes
and
regulations
which
govern
the installation
ol
this t1,pe eqLripment.
Local codes
and
regulations
take
precedent over any
recommendatior.rs
contained
in these
instructions.
ln lieu of
Local Codes,
the ecluipment
should
be
installed
in accordance
with the
National
Electrical
Code, and
in accordance
with the
rccommendations
made b1' the
National
Board of Fire Underwriters.
CHECK
ELECTRICAL
POWER
SUPPLY
The
electrical
power
supply
should
be
checked
to'deter-
mine
if adequate
power
is available,
and
near constant
voltage
can be
maintained.
lf there
is any
question
con-
cerning
the
power
supply,
contact
the
local
power
com-
pany for
corrections;
otherwise,
unsatisfactory
perfor-
mance
may result.
ROOF
JACK
A close
inspection ol
the cut-a-way
drawing
of the
roof
jack
and
furnace shown
in
Figure
1,
will show
that
both
the
flue
pipe
and the
combustion
air
tube
must
be
securely
attached
to the
furnace.
This
is to
insure a
complete
circuit
for the combustion
air and
flue
gases.
The
.f
urnac'e
will nol
operate
unless
the
roo/
jat'k
has
been
properlf installed.
APPLICATION
Figure 1