A non-fused disconnect switch is available as a factory-
mounted option on all units. When this option is not included, a
field-supplied disconnect switch should be installed in the
power supply wiring at a location that will meet the require-
ments of the National Electric Code and/or local regulations.
NOTE: Fused disconnect switches are not required because
the power wiring must be fused at the source.
Either inverse time circuit breaker or dual element time delay
fuses may be used for overcurrent protection on these units.
They must be sized according to Table 3.
Bottom entry is recommended for:
1. Curb mounted units with a factory installed disconnect
switch unless the power wiring is already above the finished
roof.
2. Units that are mounted on structural steel above the
finished roof unless the steel is blocking the 4-1/2" diameter
sleeve in the base of the unit. This applies to units with or
without a factory installed disconnect switch.
CAUTION: The 4-1/2" sleeve must be sealed after the
power wiring has been routed to prevent pos-
sible condensation problems in the unit control
box.
Side entry is recommended for:
1. Curb mounted units without a factory installed disconnect
switch because the power wiring must be brought outside
the unit to a field supplied disconnect switch.
2. Slab mounted units with or without a factory installed
disconnect switch.
FIG. 5 - BOTTOM POWER WIRING ENTRANCE
FIG. 6 - SIDE POWER WIRING ENTRANCE
UNITS WITHOUT DISCONNECT
UNITS WITH DISCONNECT
MODEL DSC360
MODEL DSC480
530.25-N3Y
Unitary Products Group
5
