Grain Systems PNEG-707GSI - Manual (Page 238)

238 PNEG-707 12', 18', 24' and 30' GSI Commercial Tower Dryer
23. Fuel Piping
See Orientation Section on Page 19 for dryer dimensions, components, wall sheet guidelines, etc.
See Appendix A on Page 435 for tools and equipment, Appendix B on Page 437 for hardware, etc.
Fuel Piping (Main) (Natural Gas or Liquid Propane)
Piping through Housing
Attach 12" nipple and union to burner manifold. Run first 3" pipe section vertically down through reducer
housing and out pre-cut hole in center of fan housing splice. Secure with pipe riser clamp.
Piping in Cool Section
Continue 3" fuel piping vertically into cool section of dryer to just below bottom of fans. Add 90° elbow
and continue piping horizontally through dryer window. Secure fuel piping with clevis hanger and
threaded rod as needed.
Piping through Window
Run 3" fuel piping out dryer window and add elbow.
Piping Outside Dryer
Continue 3" fuel piping from dryer window vertically down, parallel to side of dryer. Secure to
compression angle with U-bolt. Add union and 12" nipple before attaching fuel train.
NOTE: See Page 244 for fuel train.
Fuel piping runs from bottom of burner to fuel train on foundation.
(Main) Fuel piping and pilot fuel piping usually run parallel.
Electricians will install pilot fuel piping. Pilot fuel piping (3/8" copper tubing) runs from pilot section on
burner to pilot section on fuel train.
Figure 23A 3" Fuel Piping
Important Safety Precautions:
Dryer has sharp edges. These sharp edges may cause serious injury.
Use appropriate personal protective equipment. Use proper lifting techniques.