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SECTION VII: ELECTRICAL
CONNECTIONS
GENERAL INFORMATION & GROUNDING
The control box cover is held in place with 3 screws (one screw in each
lower corner and one screw at the top center post). The control box can
swing open by removing the screw from the center of each side of the
control box and allowing the control box to lower an inch or so into a
pivotal position.
NOTICE
Flexible electrical wiring must be installed in order to use the swing
away function of the control box. Rigid type electrical connections
require the wiring to be disconnected in order to swing the control box
open.
The control box can then swing open from the left by rotating on the
right side pivots for easy service of refrigeration components. If no wir-
ing is in or routed through the control box, it can be removed from the
unit by lifting slightly, tilting the top hinge out, and lifting the bottom
hinge out. During the installation, it is recommended to route the low
voltage wiring for the thermostat along the unit line voltage wiring to
help facilitate the swing away feature of the control box. Refer to Figure
9.
FIGURE 9: Outdoor Unit Swing Away Control Box
Check the electrical supply to be sure that it meets the values specified
on the unit nameplate and wiring label.
Power wiring, control (low voltage) wiring, disconnect switches and over
current protection must be supplied by the installer. Wire size should be
sized per NEC requirements.
CAUTION
!
All field wiring must USE COPPER CONDUCTORS ONLY and be in
accordance with Local, National, Fire, Safety & Electrical Codes. This
unit must be grounded with a separate ground wire in accordance
with the above codes.
The complete connection diagram and schematic wiring label is located
on the inside surface of the unit service access panel.
Johnson Controls Ducted Systems
FIELD CONNECTIONS POWER WIRING
1. Install the proper size weatherproof disconnect switch outdoors and
within sight of the unit.
2. Remove the screws at the top and sides of the corner cover. Slide
the control box cover down and remove from unit.
3. Run power wiring from the disconnect switch to the unit.
4. Route wires from disconnect through power wiring exit provided
and into the unit control box as shown in Figures 10 & 11.
5. Install the proper size time-delay fuses or circuit breaker, and make
the power supply connections.
FIGURE 10: Outdoor Unit Control Box (208/230V Single Phase)
FAN RELAY
(460V ONLY)
CONTACTOR
LOW
VOLTAGE
BOX
LOW VOLTAGE
FIELD WIRING
FAN
CAPACITOR
FIGURE 11: Outdoor Unit Control Box (208/230V & 460V 3-Phase)
5604542-UIM-B-0419
CONTROL
BOARD
GROUND
LUG
REVERSIBLE
HIGH VOLTAGE
CONDUIT PLATE
HIGH VOLTAGE
AMBIENT
FIELD WIRING
SENSOR
A0554-001
11
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