Units With Factory-Installed Non-Fused Disconnect; Units Without Factory-Installed Non-Fused Disconnect; All Units - Bryant Preferred Series Installation Instructions Manual

UNITS WITH FACTORY-INSTALLED
DISCONNECT
The factory-installed option non-fused disconnect (NFD)
switch is located in a weatherproof enclosure located under the
main control box. The manual switch handle and shaft are
shipped in the disconnect enclosure. Assemble the shaft and
handle to the switch at this point. Discard the factory test leads
(see Fig. 26).
NOTE: Non-fused disconnect is not available on 460V units.
Connect field power supply conductors to LINE side terminals
when the switch enclosure cover is removed to attach the handle.
Field-Install the NFD Shaft and Handle
1. Remove the Control Box access panel. The NFD enclosure is
located below the Control Box (see Fig. 28).
2. Remove (3) cap head screws that secure the NFD enclosure
front cover — (2) on the face of the cover and (1) on the left
side cover. See Fig. 29.
3. Remove the front cover of the NFD enclosure.
4. Make sure the NFD shipped from the factory is at OFF posi-
tion (the arrow on the black handle knob is at OFF).
5. Insert the shaft with the cross pin on the top of the shaft in the
horizontal position. See Fig. 29.
6. Measure from the tip of the shaft to the top surface of the
black pointer; the measurement should be 3.75 to 3.88 in. (95
to 99 mm).
7. Tighten the locking screw to secure the shaft to the NFD.
8. Turn the handle to the OFF position with red arrow pointing
at OFF.
9. Install the handle on to the painted cover horizontally with the
red arrow pointing to the left.
10. Secure the handle to the painted cover with (2) screws and
lock washers supplied.
11. Engaging the shaft into the handle socket, re-install (3) hex
screws on the NFD enclosure.
12. Re-install the unit front panel.
BLK
Fig. 28 — NFD Enclosure Location
NON-FUSED
YEL
BLU
Fig. 29 — NFD Handle and Shaft Assembly
NOTE: Non-fused disconnect (NFD) is not available on 460V
units.
UNITS WITHOUT FACTORY-INSTALLED NON-FUSED
DISCONNECT
When installing units, provide a disconnect switch per NEC (Na-
tional Electrical Code) of adequate size. Disconnect sizing data
is provided on the unit informative plate. Locate on unit cabinet
or within sight of the unit per national or local codes. Do not
cover unit informative plate if mounting the disconnect on the
unit cabinet.

ALL UNITS

All field wiring must comply with NEC and all local codes.
Size wire based on MCA (Minimum Circuit Amps) on the unit
informative plate. See Fig. 26 and the unit label diagram for
power wiring connections to the unit power terminal blocks
and equipment ground. Maximum wire size is #2ga AWG
(copper only) per pole on contactors. See Fig. 26 and unit label
diagram for field power wiring connections.
Provide a ground fault and short circuit over-current protection
device (fuse or breaker) per NEC Article 440 (or local codes).
Refer to unit informative data plate for MOCP (Maximum
Over-Current Protection) device size.
All field wiring must comply with the NEC and local
requirements.
All units except 208/230v units are factory wired for the voltage
shown on the nameplate. If the 208/230v unit is to be connected
to a 208v power supply, the control transformer must be rewired
by moving the black wire with the
from the 230v connection and moving it to the 200v
terminal on the primary side of the transformer. Refer to unit la-
bel diagram for additional information. Field power wires will
be connected at line-side pressure lugs on the power terminal
block or at factory-installed option non-fused disconnect.
NOTE: Check all factory and field electrical connections for
tightness.
18
/ -in. female spade connector
1
4
/ -in. male
1
4