Coleman 7600 - Installation of Blower

INSTALLATION
INSTRUCTIONS
7
660A6901,
7
660-6931,
7
660-6921
Air
Conditioning
Blower
Pockoges
a. White
lead
to
common
on terminal
block or number
I side.
b. Black
lead
to hot on
terminal
block
or number
2
side.
c. Two
red
leads to
fan
switch.
12.
Connect
the auxiliary
limit
wire
from
the furnace
control
box
to the auxiliary
limit
on the
left side
of the
blower.
13. Set
up air conditioning
speed
switch
on
the four
and
three speed
blowers as
follows:
7660A6901 high
-
3t4,tons
of air conditioning
4 speed med
-
3 tons
of air conditioning
blower
low
-
2-2/z
tons of air conditioning
7660-6931
high
-
3 tons of air conditioning
3
speed
low
-
2-2/z tons
of air conditioning
blower
The
766O4921
two speed air
conditioning
blower
goes
to
the
one air conditioning
speed
automatically,
to match
2 to
2r/2 tons of air conditioning.
WIRING
General:
Remove
the cover
of the
heating
thermostat
that is
located
on the
wall of the
home.
Remove
the two
wires connected
to
the two
terminals
(screws)
on the
heating thermostat.
Remove the
heating
thermostat
from the
wall and keep
for installing
the heat-cool
thermostat.
Install the
thermostat cooling
sub-base,
packed
with the
new blower,
on the
wall in
place of the
heat thermostat.
NOTE:
Five-wire
thermostat cable
is required
for instal-
ling
the
'heat-cool'
thermostat
when using
two trans-
formers
(7600-700 series).
Four-wire
thermostat cable
is
required
for a single
trans-
former installation
(7600-800 series).
7600-700
Series
(Two
Transformerl:
A.
Wlren
connecting
the
low voltage
wiring
for 1660-100
series
furnaces with an
air conditioning
blower in con-
junction
with a condensing
unit,
WITH A TRANS-
FORMER, use
wiring diagram:
1970A517
for 2 transformers and
4 speed
blower or
1970-600
for
2 transformers and
3 speed
blower
or
1970510
for 2 transformers and
2 speed
blower, and
follow
the
instructions be1ow.
APPLICATION
The
Coleman
7660A6901 blower,
equipped
with
4 speed
blower
motor; 7660-6931
blower,
equipped
with 3 speed
blower,motot;and766O4921 blower,
equipped
with
2
speed
blower motor are
for use on all 7600
series
Presidential Gas
Furnaces. The 7660A6901
can be
set at
low, medium, or
high speeds
to match
from
2 to 3%
tons of
air conditioning.
The766O493l
can
be
set at
low or
high
speeds
to match2
to 3t/z
tons of air conditioning.
The 766O4921
goes
to
one
air conditioning
speed automatically,
to match
2 ot
2% tons
of air
conditioning.
The 7600-700
series
Presidential
Gas
Furnaces
contain
a 20
V.A. transformer.
A
20
V.A. transformer
is
not large
enough
to energize the contactor
in an air conditioning
condensing
unit.
Coleman
Mobile
Home Condensing
Units
have been
produced
both
with and
without their
own
transformer.
If
you
are adding
air conditioning
to a 7600-700
series
furnace,
the
condensing
unit
must contain
a transformer.
In
the event
that there
is no transformer
in
the condensing
unit,
one must
be ordered
(pln
62723a5
l) and
installed. The
various
wiring
hook-ups may
be
found below
under
"Wiring."
The
7600400
series
Presidential Gas
Furnaces
have
40 V.A.
transformers
factory installed.
This
series
furnace
was de-
signed
to accommodate
addon
air conditioners
with no
transformer
in
the
condensing
units.
If adding
a condensing
unit to
this series
furnace, and
the
condensing
unit
does have
a transformer,
it must
be disconnected
and
removed.
For
correct
wiring
procedures,
see
the
"Wiring"
section
below.
INSTALLATION
OF
BLOWER
l.
Shut
off'electrical
supply
to
furnace
at breaker
box.
2. Remove
upper door
of
furnace.
3.
Remove
cover
of
furnace control
box.
4. Remove
completely,
the
orange
wire
that connects
the
fan
switch
to the terminal
block.
5. Remove
the
black motor
leads
from the
terminal
block
and
pull
the motor
leads
from the control
box.
6. Remove
the
auxiliary
limit
wires
from the auxiliary
limit
terminals
on
the
left
side
of the blower
before
removing
the
blower
from the
furnace.
7. Remove
the three screws
from the
front support
and
one
thru
each side
of the blower.
8.
Slide
the
heating blower
out
of the furnace.
9. Slide
the air conditioning
blower
into the
furnace.
10.
Secure
the new blower
by
replacing the
five
screws
used
to secure
the
old blower.
11.
Connect
the
four wire
leads
from the blower
control
box
to the
furnace control
box.
24