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Units Without Non-Fused Disconnect Option
11
Disconnect
L1
208/230-3-60
Units With Non-Fused Disconnect Option
L1
2
L2
4
L3
6
Disconnect factory test leads
and discard.
Fig. 17 — Power Wiring Connections
FIELD POWER WIRING CONNECTIONS
Field power wires are connected to the unit at line-side
pressure lugs on compressor contactor C and indoor fan
contactor IFC (see wiring diagram label for control box com-
ponent arrangement) or at factory-installed option non-
fused disconnect switch. Max wire size is #2 AWG (copper
only).
Refer to Table 3 for maximum wire size at connection lugs.
Use copper wire only. See Fig. 17 and 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. 18 — Disconnect Switch and Unit
Table 3 — Connection Lug Min/Max Wire Sizes
TB1 In Unit Control Box
80A Disconnect Option
100A Disconnect Option
16
TB
12
13
per
NEC
L2
L3
460-3-60
575-3-60
1
Optional
Factory
Disconnect
3
Wiring
Switch
5
Copper
Wire Only
Aluminum
Wire
Minimum
Maximum
#14
#1
#14
#4
#8
1/0
Specifications subject to change without notice.
NOTE: TEST LEADS - Unit may be equipped with short
leads (pigtails) on the field line connection points on contac-
tor C or optional disconnect switch. These leads are for fac-
tory run-test purposes 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 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. 17).
Connect field power supply conductors to LINE side termi-
nals 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. 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.
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. 19 — NFD Enclosure Location
NON-FUSED
YEL
BLU
RHV-090-120-01SI
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