Grain Systems PNEG-1702 - Manual (Page 18)

4. Installation
18 PNEG-1702 ETL Listed GSI/FFI Portable Dryer Manual
Fuel
Liquid Propane (LP)
Liquid Draw
The dryers have internal vaporizers and are designed to operate on liquid draw from the supply tank. The
tank should be 1000 gallons or larger and should not have a regulator mounted to it. The connection to
the dryer should be with a flexible hose designed for LP gas,
See Chart on Page 19 for proper size.
Consult your LP gas dealer for proper fittings, connection hose and safety controls required to meet local
standards and to conform with National Fire Protection Association standards. The piping train on the
dryer includes strainer, pressure relief valve, electronic safety shut off valve (on some models) and a
pressure regulator between the vaporizer and burner.
Ammonia Tanks
Do not use tanks which have previously been used for ammonia or fertilizer solutions. These substances
are extremely corrosive and will damage fuel supply and burner parts.
Oil or Water in Tanks
With liquid draw from the supply tank, any water or oil present in the tank may freeze in the pipe train or
controls causing damage. To make sure the tank is free of moisture, it can be purged with methanol.
Avoid tanks which may contain an accumulation of oil or heavy hydrocarbon from long use on a vapor
withdrawal system.
Figure 4D Grain dryer connected to a liquid propane tank.
“The equipment shall be installed in accordance with the current INSTALLATION CODES FOR GAS
BURNING APPLIANCES AND EQUIPMENT, CAN/CGA-B149.1 and CAN/CGA-B149.2, or applicable
provincial regulations, which should be carefully followed in all cases. Authorities having jurisdiction
should be consulted before installations are made”.
See Fuel Specification
Chart on Page 19
for
recommended line use.