16
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 17 for power 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. 25
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.
Fig. 25 — Power Wiring Connections
Fig. 26 — Disconnect Switch and Unit
UNITS WITH FACTORY-INSTALLED NON-FUSED
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. 25).
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 the Control Box access panel. The NFD enclo-
sure is located below the Control Box (see Fig. 27).
2. Remove (3) cap head screws that secure the NFD enclo-
sure front cover — (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. 28.
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.
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.
Di
s
connect
per
NEC
Di
s
connect
per
NEC
20
8
/2
3
0-1-60
11
12
11
12
1
3
L1
L2
L
3
TB
TB
20
8
/2
3
0-
3
-60
460-
3
-60
575-
3
-60
Unit
s
Witho
u
t Non-F
us
ed Di
s
connect Option
Unit
s
With Non-F
us
ed Di
s
connect Option
2
4
6
1
3
5
L1
L2
L
3
Option
a
l
Di
s
connect
S
witch
Di
s
connect f
a
ctory te
s
t le
a
d
s
; di
s
c
a
rd.
F
a
ctory
Wiring
COPPER
WIRE ONLY
ELECTRIC
DI
S
CONNECT
S
WITCH
ALUMINUM
WIRE