Grain Systems PNEG-588-04 - Manual (Page 17)

5. Installation
PNEG-588-04 Deluxe Downwind Heater Installation and Operation 17
Fuel Connection
Liquid Propane Models
1. LP models are designed to run on liquid propane, with liquid draw from the propane tank. Avoid using
propane supply tanks that have been use for vapor draw for long periods of time. When using liquid
draw systems any moisture that may be present in tank or lines may freeze when system is used in
cold weather. To avoid this, the usual precaution is to purge the system with methanol.
2. Run proper size line (See Specifications on Page 9) to pipe train on heater. Have a qualified gas
service person inspect installation to be sure everything is installed according to local codes
and ordinances.
3. After installation is complete, check all connections for leaks. Use liquid detergent or comparable
substance. Wear rubber gloves and eye protection. Avoid contact with liquid propane.
Propane Vapor Models
1. Propane vapor models are designed to run directly off of supply tank or from a separate
external vaporizer.
2. Run proper size line (See Specifications on Page 9) to pipe train on heater. Have a qualified gas
service person inspect installation to be sure everything is installed according to local codes
and ordinances.
3. After installation is complete, check all connections for leaks.
Natural Gas Models
1. Natural gas models are similar to vapor models, but have a larger orifice to accommodate lower
pressure, sometimes found with natural gas.
2. Run proper size line (See Specifications on Page 9) to pipe train on heater. Have a qualified gas
service person inspect installation to be sure everything is installed according to local codes
and ordinances.
3. After installation is complete, check all connections for leaks.
Do not use propane tanks which have previously been used for ammonia unless
they have been purged according to procedures of the national LP association.
Investigate to be sure that the fuel supply system complies with all local codes for
LP gas installations.
CAUTION
Do not use flame for leak testing.
DANGER