5835254-YIM-A-1119
18
Johnson Controls Ducted Systems
See Figures 20, 21, and 22 for typical field wiring. Refer to the
appropriate unit wiring diagram mounted inside the control
doors for control circuit and power wiring information.
Power wiring detail
Units are factory wired for the voltage shown on the unit
nameplate. See Table 10,
on page 21 to size
power wiring, fuses, and the disconnect switch.
Power wiring is brought into the unit through the side of the unit
or the basepan inside the curb.
Figure 20: Field wiring disconnect - cooling unit with or without electric heat and all units with a VFD option
When you connect electrical power and control wiring to
the unit, you must use water-proof connectors so that
water or moisture cannot be drawn into the unit during
normal operation. These water-proofing conditions also
apply when you install a field-supplied disconnect
switch.
THREE
PHASE
POWER
SUPPLY
FACTORY OR FIELD
SUPPLIED DISCONNECT
GROUND
LUG
TERMINAL BLOCK TB1
