Specifications

A non-fused disconnect switch is available as a factory-mount-
ed 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 discormect switches are not required because
the power wirirrgmust befused at [he source.
Either inverse time circuit breaker or dual element time de-
lay 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 fin-
ished roof.
CONDUIT
CONNECTOR
(3” Threaded)\
1
*
CONDUIT TERM INATION 4-1 /2” DIA SLEEVE
PLATE (3-5/8” K.O )
UNITS WITHOUT DISCONNECT
FIG. 5 – BOTTOM POWER WIRING ENTRANCE
2.
530.25-N1
Units that are mounted on structural steel above the
finished roof unless the steel is blocking the 4-1/2 inch
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 inch sleeve must be sea[edafter
the pwer wiringhas been routed to prevent
possible condensation problems in the unit
control box.
Side entry is recommended for:
1. Curb mounted units without a factory installed discon-
nect switch because the power wiring must be brought
outside the unit to a field supplied disconnect
2. Slab mounted units with or without a factory
disconnect switch.
CONDUIT
CONNECTOR
(3” Threaded)
L
yH%qjTJij#c-dj
SPRING PINS (SLOTTED)
u
/
u
— —
.
II
/ \
/ \
switch.
installed
CONDUIT TERMINATION 4:1 /2” DIA. SLEEVE
PLATE (3-5/8” K 0.)
UNITS WITH DISCONNECT
3-518”
K
0.
\
/
/
/
?’‘
,1
/
I
I
. i.
1
)
CONDUIT
CONNECTOR
- (3” Threaded)
(BY YORK)
, CONDUIT
TERMINATION
CONDUIT
f
(8Y FIELD)
STRAIGHT CONNECTOR
(8Y FIELD)
MODELS DSC300, 360
FIG. 6 – SIDE POWER WIRING ENTRANCE
CES
PLATE
(3-5/8”
K.0 )
—1 . . .1. –-L —
+.
=@=
-
L J– –
CONDUIT
- CONNECTOR
(3” Threaded)
(BY YORK)
7
t
OUTL:T BOX \ FLEXIBLE CONDUIT
3-518’”K O.
(Die Cast)
(Liquid Tight)
(BY FIELD)
(8Y FIELD)
MODEL DSC480
5