45OCH0006F08/13/2024
CEILAIR
®
CW & DX IOM
2.7.5 REMOTE SHUT DOWN
CAUTION
Do not connect any additional loads to the system control transformers. Connecting additional load to a
factory supplied control transformer may result in overloading the transformer.
2.7.3.1 Remote Condenser
For systems equipped with a remote condenser, the installer must provide main power wiring to the remote
condenser control box. An equipment ground lug is provided within the control box for termination of the
earth ground wire. Refer to the electrical drawing supplied with your system and the wiring diagram supplied
with the condenser (typically located in the condenser electric box).
As an option, control wiring may be installed between the A/C system and the condenser for the system
controller to enable condenser operation only when the compressor is running.
You must remove the jumper from the remote condenser terminal board (see the condenser wiring diagram,
Figure 17). Wire 24 VAC control conductors from the terminal board within the A/C unit to the remote
condenser terminal board. If control wires are not installed (and the jumper remains in place), the condenser is
always enabled and will turn on and off based on the condenser’s pressure control settings.
2.7.3.2 Remote Condensing Unit
Systems equipped with a remote condensing unit require field wiring between the evaporator system and the
remote condensing unit. The number of conductors required varies based upon the options provided. Refer
to the electrical drawings supplied with your unit to determine the exact number of field wires and proper wire
terminations required for your system.
Glycol-cooled systems equipped with a pump package require field wiring between the A/C unit and pump
package. The installer must wire two control conductors from the terminal board within the A/C unit to the
pump package electric box. Refer to the electrical drawings supplied with your unit to determine the exact
number of field wires and proper wire terminations required for your system.
2.7.4 Water/Glycol Systems
Glycol-cooled systems equipped with a pump package require field wiring between the A/C unit and pump
package. The installer must wire two control conductors from the terminal board within the A/C unit to the
pump package electric box. Refer to the electrical drawings supplied with your unit to determine the exact
number of field wires and proper wire terminations required for your system.
2.7.5 Remote Shut Down
The unit provides an interface that allows for remote shut down. A normally-closed switch rated at 5 A at
24VAC is required for this purpose. Two conductors from the normally closed switch must be connected to
the control terminal board located within the unit electric box. Refer to the supplied electrical drawings for the
appropriate wire terminations.
To Next Page
Loading...
