Hunter Fan PH20-30A - Manual (Page 6)

 
LOCATION AND MOUNTING (cont.)
1. Mount the heater horizontally, as shown in figure 4. Choose a mounting
location that will enable mounting the heater on a level surface, with adequate room
around the heater for removal and service. Check that the tilt switch is upright. Refer to
figure 6 for mounting dimensions and clearances.
2. After selecting a location, remove all combustible material from area, within
two inches of where the heater will be located. This includes carpeting, rubber mats,
plywood flooring, etc.
3. Cut holes as required for air inlet and exhaust. Remove cross bar and covers.
Set heater in place over inlet and exhaust holes and mark mounting holes. Remove
heater and drill 5/16 inch diameter holes for mounting studs (page 8)
4. Position heat shield ( page 17) around the hole for the exhaust connection, as
shown in figure 3. The heater case becomes hot in this area during operation, and the
heat shield is required to protect the vehicle from excessive heat. Set the heater over the
mounting holes and secure with mounting studs using the nuts and lock washers
supplied with the heater.
.
5. Direct the exhaust away from the compartment using elbow and nipple , and
additional 11/4-inch nipples as required. If the exhaust must pass through an additional
vehicle body panel or floor, use exhaust collar to protect paint and/or trim. Cut a hole in
the panel 2-7/8 to 3 inches in diameter to ensure adequate clearance between the hot
pipe and the painted panel and to provide access for later servicing. Cover the opening
with exhaust collar and direct the exhaust pipe through it.
6. If the heater is mounted entirely within the cab, connect a 1-inch rubber or
plastic hose to the air inlet and run it outside the cab to provide fresh air for combustion.


CAUTION
Use heat shield and exhaust collar as described below to prevent damage to
paint and furnishings of vehicle from excessive heat.




Exhaust gas must be piped to the outside of the heated compartment. Do not
allow the exhaust gas to exit directly beneath the vehicle