b. Place fuel shutoff control in "OPEN" position.
b. Attaching 6-Inch Canvas Ducts. Distribution of
the heat may be subdivided to as many six different
c. Open burner access door and insert lighting
torch wick into burner until tip of wick becomes wet.
areas by using the transition plates and 6-inch ducts
d. Remove lighting torch from burner and place
as follows
fuel shut-off valve in the "CLOSED" position.
(1) Loosen the three thumbscrews and remove
e. Ignite lighting torch wick.
the two transition plates mounted on the top of the
heater. These plates are used to adapt the 6-inch
torch into burner until burner is ignited.
ducts to the 12-inch ducts.
g. Remove and extinguish lighting torch, close bur-
(2) Release the duct expanding cord at the end
ner access door and open combustion air damper.
of the 12-inch duct. Fit the transition plate (with the
h. Place fuel shut-off valve in the "OPEN"
flat side out) inside the duct band at the end of the
position and set temperature control knob to desired
12-inch duct; rotate the plate until the three thumb-
discharge air temperature.
screws aline with the three holes in the duct band.
i. Set discharge air dampers to desired position.
Tighten thumbscrews securely.
(3) Unfasten the duct storage tube snap spring
NOTE
locks from the duct storage tubes, and remove the 6-
If the burner fails to Light properly, relight it at once,
inch ducts.
unless 2 minutes or more has elapsed. In this case, fuel
(4) Select the end of the 6-inch duct that has two
may be overflowing from the drain tube, and the burner
anchoring pins opposite each other in its flexible
fuel line shutoff valve must be closed and no attempt
band.
must be made to relight the burner for at least 5 minutes.
(5) Squeeze the ends of the duct together and in-
During this 5 minutes, keep the engine running and the
burner air duct damper open to aid in evaporating the
sert the anchor pins into the pin anchors on the tran-
excess fuel in the burner. After 5 minutes has elapsed
sition plate so that the duct is flush and tight with
proceed to light the burner again, using the lighting in-
the transition plate.
structions in a through i. above then move the burner air
(6) Repeat (5) and (6) above to attach two more
duct damper to operating position.
6-inch ducts to this transition plate.
(7) Repeat (1) through (7) above to attach the
2-6 Operating the Heater and Regulating,
other transition plate and the remaining ducts.
the Heat Output
2-4 Starting the Engine
a. Check the air being delivered after the heater
has been in operation at least 15 minutes. The air
In all normal operations, start the engine and run it
should be warm or hot.
for several minutes before lighting the burner. Per-
b. Regulate the heat output. Heat output may be
form the applicable preventive maintenance services
regulated from the maximum capacity to about 40%
of the maximum capacity, by manual adjustment of
a. Set the Inlet Temperature Control.
the temperature control valve.
(1) When the engine is to be operated in tem-
perature above 50F, pull the inlet temperature
NOTE
control handle all the way out.
(2) When operating in temperatures between
The temperature control valve is a heat control and not a
25F and 50F place the handle in the center
fuel cock.
position.
c. Regulate the flow of heated air by means of the
(3) When operating in temperatures below 25F
discharge opening dampers. Closing the dampers
push the handle all the way in.
should not be necessary except in temperature
b. Place the choke lever in the vertical position
below 32F.
completely closed.
CAUTION
c. Place the ignition switch in the "run" position.
d. Connect the starter rope to the flywheel flange,
Do not attempt to regulate the heat out-
wrap the rope around the flange and pull the rope
put and the flow of heated air except by
vigorously to start the engine.
methods described in "b" and " c "
2-5 Lighting The Burner (fig. 2-3).
above. DO NOT ATTEMPT TO SLOW
a. Place temperature control knob in the "HIGH
THE ENGINE SPEED.
FIRE" position.
