Grain Systems PNEG-581 - Manual (Page 13)

PNEG-581 Deluxe Vane Axial Heater 13
3. Heater Installation
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 used 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 19) to liquid pipetrain on heater. Have a qualified
gas service man inspect installation to be sure that everything is installed according to local codes
and ordinances.
3. After installation is complete check all connections for leaks with liquid detergent or comparable.
Wear rubber gloves and eye protection. Avoid contact with liquid propane. DO NOT USE FLAME
FOR LEAK TESTING.
Propane Vapor Models
1. Propane vapor models are designed to run directly off of a supply tank or from a separate
external vaporizer.
2. Run proper size line (see Specifications on Page 19) to pipetrain 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 FLAME FOR
LEAK TESTING.
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 19) to pipetrain on heater. Have a qualified gas
service man 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 FLAME FOR
LEAK TESTING.
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.
Be sure fuel supply system complies with all local codes for LP gas installations.
DO NOT USE FLAME FOR LEAK TESTING.