Grain Systems PNEG-269 - Manual (Page 6)

6
Electric Heater
INSTALLATION
Be Sure Power Is Disconnected And
Locked Out Before Installation!
Failure To Do So May Cause Seri-
ous Injury Or Death.
Checklist Before
Installing Electric Heater
1. One of the most important factors for installa-
tion is providing adequate power to run the unit.
Under sized wire can lead to voltage drop and
can cause overheating of power leads and poor
performance. Therefore, it is necessary to know
the distance from the unit to an available trans
former and the horsepower of your fan unit.
These two factors will determine the size of wire
needed for efficient operation. See Fan Specifi-
cations on the following page.
2. Each electric heater circuit should be wired
through a fused or circuit breaker disconnect
switch.
3. Refer to the Heater Specifications on page 7 for
the recommended slow blow fuse or breaker size
1. Be sure that the disconnect and the fan are well
grounded. See machine to earth ground page 9.
2. Check all fasteners on heater elements and other
bolted items to make sure they are tight. If
any are loose, check for proper clearance and
retighten. They may have loosened in shipping.
3. Heater should be bolted solidly to fan and tran-
sition.
4. Check and retighten all electrical connections.
They may have loosened in shipping.
5. Make all input power connections to heater as
shown on page 8.
Important! Heater Must Be Interlocked To Fan
Or Connected To An Air
Proving Device. In Event Of Fan Failure
Heater Must Be Shutdown.
Installation
Instructions
to use when installing your particular Heater.
4. Standard electrical safety practices and codes
should be used. Refer to National Electric Code
Standard Handbook by National Fire Protection
Association.
5. A qualified electrician should make all electri-
cal wiring installations.