Connecting the wiring
To connect the wiring correctly, you must do the following:
1. Observe the general information and grounding information.
2. Install the field connections power wiring.
3. Install the field connections control wiring.
See for the outdoor unit wiring diagrams.
General information and grounding the unit
Before you begin:
Before you connect the wiring for the outdoor unit, note the information below.
About this task:
NOTICE
A flexible electrical connection must be installed in order to use the swing away function of the control
box. A rigid electrical connection requires the wiring to be disconnected in order to swing the control
box open.
CAUTION
All field wiring must only use copper conductors and be in accordance with Local, National, Fire, Safety
and Electrical Codes. This unit must be grounded with a separate ground wire in accordance with the
above codes.
• The control box cover is held in place with three 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 into a
pivotal position.
• 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 wiring 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, route the low voltage wiring for the thermostat along the
flexible line voltage electrical connection to help facilitate the swing away feature of the control
box. See Figure 13.
• Check the electrical supply to ensure 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 must be sized following NEC requirements.
• The complete connection diagram and schematic wiring label is located on the inside surface of
the unit service access panel.
33Installation Manual: R-454B Outdoor Split-System Air Conditioner
Johnson Controls Ducted Systems
To Next Page
Loading...
