System Control Panel; Final Installation Considerations - Rheem GEN27WN Manuel D'installation

System Control Panel

The residential generator control panel, located inside the
generator housing, is shown below.
D
C
B
A
Brief descriptions of the controls used during installation are:
A - Circuit Breaker — Must be ON to supply power to the
transfer switch. Breaker enclosure includes removable
bottom panel to assist with conduit connections.
B - Set Exercise — Used to set exercise cycle start time.
C - MANUAL OVER-RIDE — Used to manually start and stop
the generator.
D - 15 Amp Fuse — Protects DC control circuits.
E - System Switch — Switches modes to OFF or AUTO.
F - Digital Display — Displays running time in hours or
fault codes.
See Controls in the operator's manual for more information
E F
System Switch
This two-position switch is the most important control on
the residential generator and is used as follows:
• "AUTO" position is the normal operating position. If
a utility power outage is sensed, the system will start
the generator. When utility power is restored, lets the
engine stabilize internal temperatures, shuts off the
generator, and waits for the next utility power outage.
• "OFF" position turns off running generator, prevents
unit from starting and resets any detected faults.
15 Amp Fuse
Protects the generator DC control circuits. If the fuse has
'blown' (melted open) or was removed, the engine cannot
crank or start. Replace the fuse using only an identical
ATO 15A fuse. One spare fuse is supplied with the unit.
If fuse was blown or removed, you will need to reset the
exercise timer (see Setting Exercise Timer).

Final Installation Considerations

Engine Oil
NOTICE Any attempt to crank or start the engine before
it has been properly serviced with the recommended
coolant or oil will result in equipment failure.
• Refer to Maintenance in the operator's manual and engine
manual for coolant and oil fill information.
• Damage to equipment resulting from failure to follow this
instruction will void engine and generator warranty.
The engine is shipped from the factory pre-run and filled
with non-synthetic oil (API SL 10W-30). This allows for
system operation in a wide range of temperature and climate
conditions. Before starting the engine, check oil level and
ensure that engine is serviced as described in the engine
operator's manual.
Coolant System
The engine is shipped from the factory filled with a
50-50 mix of automotive (Dex-Cool™ orange) anti-freeze
and water. This will provide optimum year round protection
against freezing, boiling and corrosion. The coolant system
incorporates a water heater that operates when ambient
temperature is below 80ºF AND utility power is present at the
transfer switch. Periodically check coolant level as described
in the engine manual.
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