Grain Systems PNEG-743 - Manual (Page 8)

9
Series 2000 Top Dry Heater Control
OPERATING PROCEDURE
1. At fan/heater turn toggle
switch to "ON" position. If
using a remote display or
econo start, place that toggle
switch in the "ON" position
also.
2. Press the increase and de-
crease buttons at the same
time to reset.
3. Press the "PROGRAM TEM-
PERATURE" button.
4. Use the increase or decrease
button to set the "PLENUM
HIGH LIMIT SET POINT"
to desired setting (160°-
200°).
5. Press the "PROGRAM TEM-
PERATURE" button to con-
tinue to set the "CYCLE SET
POINT".
6. Use the increase or decrease
buttons to set the "CYCLE
SET POINT" to desired set
ting (140°-180°).
Setting Gas Pressure
Set grain temperature on control
panel display.
8. Use the increase or decrease buttons to set "GRAIN TEMPERA-
TURE SET POINT" to 140°.
9. Press the "PROGRAM TEMPERATURE" button to continue
to set the "TEMPERATURE DIFFERENTIAL".
10. Use the increase or decrease buttons to set the "TEMPERATURE
DIFFERENTIAL" to 10°.
11. Open all manual gas shut off valves, on and to the fan/heater unit.
12. Press the start button.
13. Make sure that the blade is spinining in the right direction. If not
place the toggle switch in the "OFF" position and correct the problem.
14. After the fan reaches full speed the display should read "AIR-
FLOW" in the upper right hand corner and "PURGING" in the
lower left corner.
15. After 10 seconds the burner should ignite. If not, turn "OFF" the
toggle switch and then back "ON". Repeat 12-15.
16. When the burner ignites the display should read "HI-FLAME" at
the left of the display. Loosen the nut on the main regulator and turn
screw in, to increase pressure and out to decrease pressure. The
pressure gauge should be set at 10-15 lbs. for LP units, or 4-6 lbs.
for natural gas units.
Airflow and
purging on
control
panel
display.
7. Press the "PROGRAM TEMPERATURE" button to contine to
set the "GRAIN TEMPERATURE SET POINT".