Grain Systems PNEG-1851 - Manual (Page 79)

Appendix A: Grain Drying Operations
Table A-2 Initial settings for the dry and cool operation
Unload speed in manual mode
Initial
moisture
Drying time
(min.)
One-module
dryer (Bph)
Two-module
dryer (Bph)
Three-
module dryer
(Bph)
17% 18 360 890 990
18% 24 270 670 910
19% 30 220 540 730
20% 35 190 460 620
21% 40 160 400 540
22% 45 140 360 480
23% 50 130 320 440
24% 55 120 290 400
25% 60 110 270 360
26% 65 100 250 330
27% 70 90 260 310
28% 75 90 210 290
29% 80 80 200 270
30% 85 80 190 260
31% 90 70 180 240
32% 95 70 170 230
33% 100 60 160 220
34% 105 60 150 210
35% 110 60 150 200
The Burner Modes
When heating the plenum, the burner modes help avoid high plenum temperatures and frequent fluctua-
tions. The chosen burner mode is dependent on the grain type and outside temperature.
Establishing a uniform plenum temperature is important, as it is the air in the plenum that is eventually
released into the drying chamber to dry the grain. As a result, frequent fluctuations in the plenum’s temper-
ature or temperature levels that are too high directly impact the quality of the grain. To help regulate the
temperature inside the plenum chamber, each available burner mode uses the plenum temperature set-
point and burner differential settings as reference parameters (see
Setting the Plenum Temperature
Range, page 35 ). It is the sum or difference of these two parameters that determine whether the burner
operates in low fire or high fire, or in some instances, shuts off. The available burner modes are shown in
the table that follows.
PNEG-1851 Vision N2 79