Grain Systems PNEG-1776 - Manual (Page 13)

PNEG-1776 Deluxe Downwind 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.
Standard electrical safety practices and codes should be used when working with a heater. Refer to the
National Electric Code Standard Handbook by the National Fire Protection Association. A qualified
electrician should make all wiring installations.
Fuel Connection
IMPORTANT: Do not use propane tanks that have previously been used for ammonia unless they have
been purged according to procedures of the National LP association.
Fuel supply system must comply with local codes for LP gas installation.
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 situation, purge the system with methanol.
2. Run proper size line (See Specifications on Page 12) to liquid pipe train on heater. Have a qualified
gas service person 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.
WARNING
Always disconnect and lock out power before working on or around heater.