Grain Systems PNEG-588-04 - Manual (Page 21)

PNEG-588-04 Deluxe Downwind Heater Installation and Operation 21
6. Operation
Operating Temperature Table
NOTE: This table is not intended as a drying guide. It should be used as a reference for setting maximum
plenum temperature for safe operation.
Cycling Heater Operation
1. Thermostat must be wired into heater control box for heater to operate.
2. Open all manual shut off valves to heater unit.
3. Start fan. This will supply power to heater.
4. Turn thermostat dial to its highest setting.
5. Turn toggle switch ON.
6. Heater should now be lit. If not check to see that all gas is ON.
7. Watch thermometer on plenum and when it reaches desired temperature turn thermostat back slowly
until heater cycles OFF.
8. Gas pressure should be adjusted, so burner is on 75% of the time.
9. Watch plenum temperature as burner goes through a few cycles, to be sure that it is
operating properly.
Grain
Low Temperature
Batch
High Temperature
Batch Dry No Stirring
High Temperature
with Stirring
Continuous Flow
(Recirculating)
Corn
5-20°Above
Ambient Temperature
120° 140° 140°
Rice
5-10°Above
Ambient Temperature
100° 100° Not Recommended
Beans and
Wheat
5-20°Above
Ambient Temperature
110° 120° Not Recommended
CAUTION
Do not exceed plenum temperatures listed in table
CAUTION
Do not operate above rated maximum BTU output. Fire damage to grain product
and drying structure will occur. Refer to burner specifications for maximum BTU.