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LOCATE VENT OPENING
After the location of the heater has been determined, the opening
for the vent pipe should be cut. If the heater is to be recessed, cut
out opening for heater between studs on the interior wall and cut out
the floor plate between the studs, so heater will set flat on floor as all
dimensions are given from a finished floor. The height of the cut out
for a 40,000 BTU model is 78-5/8", for the 55,000 models the cut out
height is 87-5/16". NOTE: This dimension may be increased to allow
more room for installation and making the wiring connection, then
refinished.
Next, cut out a 9-1/4" opening in exterior wall for the vent tubes to
pass through. The center of opening for the 40,000 BTU furnace is
59", the center for opening for 55,000 BTU furnace is 68-1/2". See
Figure 5, on Page 6.
If the heater is to be surfaced mounted, cut out 9-1/4" opening
through the interior and exterior wall. The center of cut out will be 59"
for 40,000 BTU and 68-1/2" for 55,000 BTU models. Be sure both
cutouts are level with each other.
INSTALLING THE FURNACE
The vent system supplied with this furnace will accommodate walls ¾"
(when recessed) up to 12" thick. Use only the exhaust tube, air intake
tube and vent cap supplied with heater. Do not attempt to lengthen
the exhaust or air intake tubes, this could cause an imbalance in the
heater resulting in poor performance and pilot outage (See Figure 6).
Measure exact distance "X" between surface on which back of cabinet
will rest (inside of recessed cavity or face of wall when freestanding)
and the outside wall surface (see Figure 6).
INLET AIR TUBE "A" – Measuring from gasketed
surface, mark and cut pipe same as dimension "X".
Remove any burrs.
VENT EXHAUST TUBE "B" – Measuring from
gasketed surface, mark and cut pipe 1-3/4" greater
than dimension "X". Remove any burrs.
Fasten vent exhaust tube "B" to heat exchanger collar and Inlet Air
Tube "A" to flange on back of furnace using 16 # 3/8 screws ("C")
provided. Be sure gaskets are in place and not damaged. Anytime
the vent pipes are removed check and replace gaskets (if necessary).
Failure to replace missing or damaged gaskets may expose
homeowner to life threatening conditions.
Secure furnace in place using 2 holes provided in bottom of casing.
NOTE: Make sure both tubes are centered in cut out. Slide the vent
cap onto the pipes extending from the back of the furnace. A rotating
or twisting motion will ease this installation. Secure vent cap and
vent cap spacer plate to wall causing the vent tubes to have a slight
downward pitch. This will prevent water from entering. Anchors (not
provided) may be required. Caulk around vent cap spacer plate with
caulking provided.
NOTE: Some framing may be necessary to provide a flat surface
against the vent cap spacer plate and to prevent rain from entering
the wall opening.
1018028-B
INSTALLATION
FIG. 6
Vent
Cap
GAS CONNECTION
Make the gas connection between the manual shut off valve
and the furnace gas control valve with approved ½" connectors.
Compounds used on threaded joints of gas piping shall be approved
for use with Propane gas. The gas lines must be checked for leaks
by the installer with soapy water or liquid detergent, never use
an open flame. If connections are not exposed, a pressure test
must be run. Be sure to disconnect the gas supply line from the
appliance valve before pressure testing. The manifold pressure is
pre-set at the factory and should be 3.5" w.c. for Natural Gas and
10" w.c. for Propane Gas. The minimum inlet pressure for Natural
Gas is 4.5" w.c. and 11" w.c. for Propane Gas, "for purpose of input
adjustment". The maximum inlet pressure should never exceed
7.0" w.c. on Natural Gas or 14" w.c. on Propane Gas.
THERMOSTAT INSTALLATION
Follow the instructions included with the thermostat. Select a
location for the thermostat on an inside wall approximately 5 feet
above the floor where it won't be affected by heat or cold sources
such as direct sunlight, televisions, fireplaces, hidden hot or cold
water pipes, drafts, etc., and a minimum of 4' from the heater. The
thermostat must never be placed in an adjacent room. Connect
thermostat wires to thermostat and mount to wall. Run wire to
furnace and make connections to thermostat wires coming out of
top of furnace. Use insulated staples (provided) to secure wire to
wall.
OPERATION
This heater is equipped with a slow opening gas control. On a call
for heat the gas valve does not snap-open to full manifold pressure,
but opens with a gradual increase to normal manifold pressure. The
time lapse from the call for heat to normal operating pressure is two
to five seconds. The slow open feature assures a safe, less noisy
ignition.
After the heat exchanger has warmed sufficiently, the fan will
automatically come on to efficiently transfer the heat into the room.
Page 8
OUTSIDE
WALL
A
X
"
"
B
Vent Cap
Spacer Plate
INSIDE
C
Heat
Exchange
Collar
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