Units With Factory-Installed Non-Fused; Disconnect - Carrier RHW036-060 Installation Instructions Manual

option non-fused disconnect switch. Maximum wire size
is #2ga AWG (copper only) per pole on contactors, #2ga
AWG (copper only) per pole on optional disconnect, and
4/0 AWG (copper only, see Fig. 17) per pole on terminal
or fuse blocks on units with single point box (see Fig. 18).
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
disconnect switch. These leads are for factory-run test pur-
poses only; remove and discard before connecting field
power wires to unit connection points. Make field power
connections directly to line connection pressure lugs only.
UNITS WITH FACTORY-INSTALLED

DISCONNECT

The factory-installed optional 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 fac-
tory test leads (see Fig. 18).
WARNING
FIRE HAZARD
Failure to follow this warning could result in personal in-
jury, 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 termi-
nals when the switch enclosure cover is removed to attach
the handle.
527 01 2701 00
NON-FUSED
COPPER
WIRE ONLY
ALUMINUM
WIRE
Specifications subject to change without notice.
Units Without Single Point Box or Disconnect Option
Equip
TB GR Lug
11 12
Disconnect
per
NEC
208/230-1-60 Ground
(GR)
Units With Disconnect Option
L1 2
Disconnect
L2 4
3 Phase Only
L3
6
Ground
(GR)
Disconnect factory test leads; discard.
Units With Electric Heat Option with Single Point Box
and Without Disconnect Option
Single Point Box
Terminal Block
L1
L2
L3
Ground (GR)
— OR —
Single Point Box
Fuse/Terminal Block
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 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. 20.
TB
11 12 13
Disconnect
per
NEC
L1 L2 L3
208/230-3-60
460-3-60
575-3-60
1
Optional
3
3 Phase Only
Switch
Factory
Wiring
5
Equip GR Lug
Factory
Wiring
Equip GR
Lug
Fuse
Fuse
Factory
Wiring
Fuse
Equip GR
Lug
13