Field Power Supply - Bryant Preferred 581J 14 Series Installation Instructions Manual

FIELD POWER SUPPLY

For those units without through-the-curb power, conduit must
be used to route the main power from the condenser end, via
the power entry in the corner post of the unit (see Fig. 29
and 30) to either the factory option disconnect or the bottom of
the control box. A 1-in. conduit is provided wrapped around
compressor. A second conduit is provided with factory-in-
stalled powered convenience outlet. For those units that require
conduit larger than 1-in., it must be field supplied. Fig. 29 and
30 show the wire routings.
If the field disconnect is larger than 100A, it must be attached
to the unit using accessory CRDISBKT001A00 — disconnect
switch bracket (see Fig. 31). Follow the instructions provided
with this accessory. For smaller field disconnects, be sure to
use 1 / -in. screws to mount the disconnect directly to the end
2
panel (see Fig. 32). In either case, set the disconnect vertical
location on the unit so that a 90 degree fitting can be used to
connect the conduit to the disconnect.
Fig. 29 — Conduit into Factory Option Non-Fused
Disconnect or HACR
Fig. 30 — Conduit into Control Box
Fig. 31 — Mounting Position for Field Disconnects (over
Fig. 32 — Mounting Position for Field Disconnects (up to
Field power wires are connected to the unit at line-side pres-
sure lugs at the main terminal block (TB1) or at factory-in-
stalled option non-fused disconnect switch or HACR. Refer to
Table 7 for maximum wire size at connection lugs. Use copper
wire only. See Fig. 33 and 34.
Table 7 — Connection Lug Min/Max Wire Sizes
TB1 in unit control box
80A Disconnect Option
100A Disconnect Option
25A HACR Option
30A HACR Option
35A HACR Option
40A HACR Option
50A HACR Option
60A HACR Option
70A HACR Option
80A HACR Option
90A HACR Option
100A HACR Option
17
100A)
100A)
MINIMUM MAXIMUM
#14 #1
#14 #4
#8 1/0
#14 1/0
#14 1/0
#14 1/0
#14 1/0
#14 1/0
#14 1/0
#14 1/0
#14 1/0
#14 1/0
#14 1/0