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Refer to the dryer rating plate to locate the minimum gas supply pressure for obtaining the
maximum gas capacity for which this dryer is specified.
1. Verify all roof vents are open and unobstructed.
do not operate the system.
2. Verify all controls are installed correctly. Refer to the ratings plate for determining the
minimum gas supply pressure to achieve the maximum gas capacity for which the heater is
specified.
3. Turn fan on by placing fan switch in an "On" position.
4. Open supply valve at the regulator.
a. It is preferable to start liquid propane units on vapor fuel. (After warm up, open liquid
valve on the supply tank approximately 1 turn, and close vapor valve.)
5. Open liquid valve (on LPGE Heaters only).
6. Open vapor valve.
7. Turn heater on by placing toggle switch to "Momentary Start" then "On" position.
8. Open regulator at heater slowly to 2 psig (14kPa) fuel pressure for low temperature start.
9. Set plenum external controls for desired heater operation.
manual for more
10. Wait at least 40 seconds for ignition to occur. The heater has a 30-second pre-purge before
ignition.
11. Perform a gas leak check during start up to verify the gas tightness of the gas train components
and piping under normal operating conditions.
12. If burner fails to ignite in 40 seconds, close regulator and vapor valve and turn off the heater by
placing toggle switch to the "Off" position.
shooting of
heater.)
13. If the high limit shuts the burner off, the high limit indicator light will be illuminated. Once the
high limit has cooled to a lower temperature, the high limit is reset by turning the heater switch
off and then back on. The repeated shutting off of the burner by the burner high limit is caused
by excessive static pressure, lack of air flow or a firing rate set too high. Reduce the static
pressure or air blockage before re-firing unit. If needed adjust the firing rate.
Drying Temperature Recommendations:
To determine the appropriate drying temperature, the crop to be dried and the drying system used must
be established. When this information is known, refer to the following table for the recommended
maximum plenum temperatures.
In using the recommended drying temperatures please be aware of the following information:
1. The rate of drying is increased with increased temperature, however susceptibility to grain
damage also increases.
Chief Industries, Inc. 800-359-7600 OPERATION - 416274
information.)
C E N T R I F U G A L
Note:
if freezing of roof vents could occur,
(See adjustment section of this
(Refer to service section of this manual for trouble
H E A T E R
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C S A
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