AGI D1660 - Page 29

7713395 R2 29
LP Fuel - Control Loop Section
Figure 22. LP fuel — control loop section
14
13
11
12
16
19
17
15
18
CONNECTS TO
THE REGULATOR
SECTION
CONNECTS TO
THE BURNER
Item # in
Diagram
Component Description
11 Main valve 1
Electrically actuated valve to turn the fuel ON or OFF to the pilot and burner
12 Pilot shut-off valve
Manual valve for shutting off fuel to the pilot
13
Pilot pressure regulator
Further reduces fuel pressure to the pilot solenoid valve
14 Pilot solenoid valve
Electrically actuated valve to turn the fuel ON or OFF to the pilot
15 Pilot line
Supplies fuel to the pilot
16 Main valve 2
Electrically actuated valve to turn fuel ON or OFF to the burner
17
Electronic modulating motor
Receives signal from the temperature controller. Moves a linkage attached
to the butterfly valve to modulate the fuel flow to the burner.
18
Butterfly valve
Controls flow of fuel to the burner to maintain the desired temperature.
19 Burner shut-off valve
Manually operated to shut off fuel to the burner
CONTINUOUS MIXED-FLOW GRAIN DRYER WITH COMMANDER CONTROL SYSTEM 3. FEATURES