Units With Factory-Installed Non-Fused Disconnect Or Hacr - Carrier WeatherMaster 48HC04 Series Installation Instructions Manual

your area.) If a de-energize via unit disconnect switch operation
of the convenience outlet is desired, connect the source leads to
the load side of the unit disconnect. On a unit without a unit-
mounted disconnect, connect the source leads to compressor
contactor C and indoor fan contactor IFC pressure lugs with unit
field power leads. See Convenience Outlets on page 18 for pow-
er transformer connections.
The field power wires are connected to the unit at line-side
pressure lugs on compressor contactor C and indoor fan con-
tactor IFC (see wiring diagram label for control box compo-
nent arrangement) or at factory-installed option non-fused dis-
connect switch or HACR. Maximum wire size is #2ga AWG
(copper only) per pole on contactors and #2ga AWG (copper
only) per pole on optional disconnect or HACR. See Fig. 26
and unit label diagram for field power wiring connections.
NOTE: Unit may be equipped with short test leads (pigtails) on
the field line connection points on contactor C or optional discon-
nect switch. These leads are for factory-run test purposes only; re-
move and discard before connecting field power wires to unit con-
nection points. Make field power connections directly to line con-
nection pressure lugs only.
WARNING
FIRE HAZARD
Failure to follow this warning could result in intermittent oper-
ation or performance satisfaction.
Do not connect aluminum wire between disconnect switch and
unit. Use only copper wire.
Units Without Disconnect or HACR Option
Equip
C GR Lug C
11 23 11
Disconnect
per
NEC
208/230-1-60 Ground L1
(GR)
208/230-3-60
460-3-60
575-3-60
Units With Disconnect or HACR Option
L1 2
4
L2
3 Phase Only
L3
6
Ground
(GR)
Disconnect factory test leads; discard.
Fig. 26 — Power Wiring Connections
1-ph Belt Drive IFM
Direct Drive IFM
or
IFC
Equip
13 13 23 TB
GR Lug
Disconnect
per
NEC
L2 L3 Ground
(GR)
1
Optional
Disconnect
3
Switch 3 Phase Only
Factory
Wiring
5
Equip GR Lug
ELECTRIC
DISCONNECT
SWITCH
Fig. 27 — 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. 26).
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 unit front panel (see Fig. 2).
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. 28.
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. 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 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.
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. 28 — NFD Enclosure Location
16
COPPER
WIRE ONLY
ALUMINUM
WIRE