Grain Systems PNEG-1775 - Manual (Page 13)

PNEG-1775 Vane Axial Heater - Canadian 13
5. Installation
Machine to Earth Ground
It is very important that a machine to earth ground rod be installed at the fan. This is true even if there is
a ground at the pole 15' away. This ground needs to be as close to the fan as possible, but no more than
8' away. The ground rod should be connected to the fan control panel with at least a #6 solid bare copper
ground wire, or in accordance with local requirements. The machine to earth ground provides additional
safety if there is a short. It also provides the grounding necessary for long life and operation of the solid
state circuit boards used on control circuits and the electronic ignition systems.
Previously Installed Units
It is recommended that previously installed units be checked to see that a machine to earth ground has
been installed by an electrician.
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 12) 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. DO NOT USE
FLAME FOR LEAK TESTING.
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 12) 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 12) 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.
WARNING
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.