Coleman 7600 - Installation Instructions; Gas Piping; Lighting Procedure

GAS
PIPING
Route the
gas piping
or
tubing to
the furnace.
Use
th"
black
iron
pipe
or
%"
O.D.
copper
tubing
If
the
piping
length exceeds
40',
use
't7^"
black
iron
pipe
or
'/a"
copper
tubing.
When using
natural
gas,
branch tubing
may be copper
internally
tinned or copper
tubing containing
not more
than
75
percent
copper.
When using
L.P.
gas,
tubing
may be
type K.
Be
sure
to check
local authorities
for
any
other
requirements
concerning
gas
piping.
It is
recommended
that a
main shut-off
valve be
located in
the
gas
supply
line external
to the
furnace.
This shut-
off
valve
is required by
AGA as well
as
some
local
codes.
When
making the connection
at the
gas
control
valve,
use a
wrench on the
inlet side to
prevent twisting the
valve body which
could
result in service
problems.
After
connections
have been
made, be sure all
joints
are checked
with soap
suds to detect
any
leaks. This
should also
include a check of
the
furnace controls
and
piping. NEVER CHECK FOR
LEAKS
WITH
A LIGHTED
MATCH.
CAUTION:
DO NOT TEST THE
FUEL SYSTEM AT
MORE THAN
14 INCHES WATER
COLUMN
AFTER
FURNACE
HAS
BEEN
CONNECTED
TO
FUEL LINE.
ANY TEST CONDUCTED
ABOVE
14 INCHES WATER
COLUMN
MAY DAMAGE
THE
FURNACE CONTROL
VALVE AND
VOID THE WARRANTY.
DESCRIPTION
The B57
Midgitrol
(Coleman Part
No. 7660-3261)
is a
combination
gas
valve
which
provides
all
manual and
automatic
control
functions
required
for operation
of
gas fired
heating
equipment.
This valve
is
suitable for
use
with
all
gases.
The
B5l
includes
(l) permanently lubricated
shear
seal,
disc
type
gas
cock,
(2)
thermomagnet
safety
valve,
(3)
main
line automatic
valve,
(4) pilot
gas
adjust-
ment
valve,
and
(5) pilot line filter and
pressure
regu-
lator
(optional).
OPERATION
The
l00\a
shut-off
pilot
safety
section
operates
from
power
bY a
2500G tYPe
thermo-
couple
d bY
Pilot
flame.
In event
of
low
outage,
safetY
valve shuts
off
all
gas.
Main
line
automatic
gas
valve opens
and
closes
in re-
sponse
to thermostat
or
other controls
wired
in 24 volt
circuit.
24 voitt
power is
provided by
an external
transformer.
INSTALLATION
Use
valve
within
following
operating
ranges:
Maximum
operating
pressure:
t/z
psi
(14"
WC)
Minimum
operating
pressure:
I
oz.
(2"
WC)
Maximum
ambient
temperature:
175"F.
l. Valves
with
Part No.
7660-326
I
are
step
open
type
and
must
be
mounted
upright
in
horiz.ontal
line.
INSTALLATION
INSTRUCTIONS
2.
Make
sure all
piping
and tubing
is free
of
foreign
matter. Apply thread seal to
male threads only.
3. Connect
t7r"
pilot
tubing bween
valve and
pilot
burner assembly.
Pilot burner
assembly
m
ust
be
mounted rigidly
in
a
position
where
pilot
will
ignite
main burner when
it
has
been
reduced to smallest
flame
which
will hold thermomagnet
safety'
valve open.
4.
t/,s"
external
vent connection
is
located
at
outlet end
of valve. Connect
one end of
vent tube to
fitting on
valve and
position
other
end
near,
.
but not
in,
pilot
flame. Main
burner
flame must not
impinge
on
gen-
erator cartridge
or
vent tube.
5.
Make sure all wiring connections
are clean
and tight.
Screw
thermocouple
bushing
in
fingertight,
plus
I
turn. with small
wrench.
DO NOT OVERTIGHTEN.
6. Refer to
information furnished
with furnace
for
proper
heat
anticipator
sctting.
LIGHTING/
RESET
DIAL
EXTERNAL
VENT
CONN
MANI
FOLD
PRESS.
TAP
PI
LOT
GAS
CONN.
Figure
3.
LIGHTING
PROCEDURE
l. Turn
thermostat
to
lowest selting.
Turn
to PILOT.
Press dial
in and
light
pilot.
Hold
for 60 seconds
and
release.
2. Turn dial
counterclockwise
to ON.
Use this
position for thermostat
control.
Set thermostat
for desired
room temperature.
3.
Shut Down
Procedure.
Press dial
in
and
turn clockwise
to OFF.
Use
this
position
when
complete shut-
down
is necessary.
(Use
PILOT
position lor temporary
or seasonal
shutdown.)
ADJUSTMENTS
See
Fig.3
for Location-
Pilot Cas
Adjustment.
Remove
pilot
adjustment
cap
screw
and
turn
pilot
adjustment
screw
to
produce non-
blowing
blue
flame covering
top
t7o"
of
thermocouple
tip. Replace cap
screw.