Units With Factory-Installed Non-Fused Disconnect Or Hacr - Carrier WeatherMaster 48HC07 Series Installation Instructions Manual

ELECTRIC
DISCONNECT
SWITCH
Fig. 28 — Disconnect Switch and Unit
UNITS WITH FACTORY-INSTALLED NON-FUSED DIS-
CONNECT OR HACR
The factory-installed option non-fused disconnect (NFD) or
HACR switch is located in a weatherproof enclosure located
under the main control box. The manual switch handle and
shaft are shipped in the disconnect or HACR enclosure. As-
semble the shaft and handle to the switch at this point. Discard
the factory test leads (see Fig. 27). Connect field power supply
conductors to LINE side terminals when the switch enclosure
cover is removed to attach the handle.
Fig. 29 — Location of Non-Fused Disconnect
Enclosure
To field install the NFD shaft and handle:
1. Remove the unit front panel (see Fig. 2 or Fig. 3).
2. Remove (3) hex screws on the NFD enclosure - (2) on the
face of the cover and (1) on the left side cover. See Fig. 30.
3. Remove the front cover of the NFD enclosure.
4. Make sure the NFD shipped from the factory is at OFF
position (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.
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 point-
ing 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.
COPPER
WIRE ONLY
ALUMINUM
WIRE
11. Engaging the shaft into the handle socket, re-install (3)
hex screws on the NFD enclosure.
12. Re-install the unit front panel.
Fig. 30 — Handle and Shaft Assembly for NFD
Fig. 31 — Location of HACR Circuit Breaker
To field install the HACR circuit breaker shaft and handle:
1. Remove the unit front panel (see Fig. 2 or Fig. 3).
2. Remove (3) hex screws on the HACR enclosure - (2) on
the face of the cover and (1) on the left side cover. See Fig.
32.
3. Remove the front cover of the HACR enclosure.
4. Make sure the HACR circuit breaker shipped from the fac-
tory is at OFF position (the white arrow pointing at OFF).
5. Insert the shaft all the way with the cross pin on the top of
the shaft in the horizontal position.
6. Tighten the locking screw to secure the shaft to the HACR
circuit breaker.
7. Turn the handle to the OFF position with red arrow point-
ing at OFF.
8. Install the handle on to the painted cover horizontally with
the red arrow pointing to the left.
9. Secure the handle to the painted cover with (2) screws and
lock washers supplied.
10. Engaging the shaft into the handle socket, re-install (3)
hex screws on the HACR circuit breaker enclosure.
11. Re-install the unit front panel.
21
Enclosure