Units With Factory-Installed Non-Fused Disconnect Or Hacr - Carrier WeatherMaster 50GC 04-06 Series Installation Instructions Manual

arrangement) or at factory-installed option non-fused disconnect
switch or HACR. Maximum wire size is #2ga AWG (copper only)
per pole on contactors, #2ga AWG (copper only) per pole on op-
tional disconnect or HACR, and 4/0 AWG (copper only) per pole
on terminal or fuse blocks on units with single point box (see
Fig. 17). See Fig. 18 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.
UNITS WITH FACTORY-INSTALLED NON-FUSED DIS-
CONNECT OR HACR
The factory-installed optional non-fused disconnect (NFD) or
HACR switch is located in a weatherproof enclosure located un-
der the main control box. The manual switch handle and shaft are
shipped in the disconnect or HACR enclosure. Assemble the shaft
and handle to the switch at this point. Discard the factory test leads
(see Fig. 18).
WARNING
FIRE HAZARD
Failure to follow this warning could result in personal injury,
death, or property damage.
Do not connect aluminum wire between disconnect switch and
unit. Use only copper wire.
ELECTRIC
DISCONNECT
SWITCH
Fig. 17 — Disconnect Switch and Unit
Connect field power supply conductors to LINE side terminals
when the switch enclosure cover is removed to attach the handle.
COPPER
WIRE ONLY
ALUMINUM
WIRE
Units Without Single Point Box, Disconnect or HACR Option
TB
11 12
Disconnect
per
NEC
208/230-1-60
Units With Disconnect or HACR Option
L1 2
4
L2
3 Phase Only
L3
6
Ground
(GR)
Disconnect factory test leads; discard.
Units With Electric Heat Option with Single Point Box
and Without Disconnect or HACR Option
L1
L2
L3
Ground (GR)
L1
L2
L3
Ground (GR)
Fig. 18 — Power Wiring Connections
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. 19).
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. 20.
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. 20.
13
Equip
GR Lug TB
11 12 13
Disconnect
per
NEC
Ground L1 L2 L3
(GR)
208/230-3-60
460-3-60
575-3-60
1
Optional
Disconnect 3
Switch 3 Phase Only
5
Equip GR Lug
Single Point Box
Terminal Block
Equip GR
Lug
— OR —
Single Point Box
Fuse/Terminal Block
Fuse
Fuse
Fuse
Equip GR
Lug
Factory
Wiring
Factory
Wiring
Factory
Wiring