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Application (continued)
No Condensation Protection
Disable the dew-point temperature calculation and protection. The cold water temperature and the humidity are
not needed by the controller; the chilled ceiling protection can still be performed by the condensation switch.
System
Define the type of equipment that is being controlled in terms of the number of pipes used on the unit.
Two Pipe
A unit that has only two pipes. Selecting this system type limits the controller to control only one valve output and
operate in a changeover mode. When operating in the changeover mode, the controller uses only the one valve
for controlling both heating and cooling. Use this configuration only when changeover operation is required.
Four Pipe
A unit that has four pipes connected, providing both heating and cooling at the same time. The controller uses
one output to control heating only and one output to control cooling only, as configured in the Outputs page.
Control Outputs
Configures the two control outputs for the different type of actuators and control sequences required for the
application.
Output 1 - Mode
The output triac pair connected to terminals 13/14/15 of the controller.
Select the control sequence option to be allocated to Output 1. For four-pipe applications, always allocate this
output to the heat option to minimize field wiring errors. For two-pipe applications, the changeover option is the
only option.
Heat Mode
The output is modulated open when heat energy is needed in the space.
Cool Mode
The output is modulated open when cool energy is needed in the space; it is also modulated to limit the cold
water temperature above dew-point temperature (if enabled).
ChangeOver Mode
The output is modulated open when heat or cool energy is needed in the space. In Cool Mode, the output is
modulated to limit the cold water temperature above the dew-point temperature (if enabled).
Not Used
The output is not controlled by the controller and is always off.
Output1 - Type
Select the type of actuator to be connected to the output.
Floating
A three-point actuator that can be commanded open or closed. It is on terminals 14/15 and/or 17/18. The run-
times for the actuator are configured in the Outputs page.
Floating
A three point actuator that can be commanded open or closed on terminals 14/15 and/or 17/18. The run-times for
the actuator are configured in the Outputs page. The Zero Energy Position (no Heat and no Cool) is the middle
Position (50%). The Cool Range is 0 to 50%; the Heat Range, 50 to 100%. The Range can be reversed by
selecting the Actuator Direct or Reverse Option. During the Synchronization Process, the fan is turned off.
PWM
A duty-cycled output where the 24VAC output is pulsed on/off in the duty cycle range 0% to 100%. This actuator
drives output terminal 14 and/or 17.
One Stage
A single-stage on/off output. It switches terminals 14 and/or 17.
Two Stage
A two-stage output: Terminals 14/17 are switched for stage 1 and terminals 15/18 are switched for stage 2.
Table 8. CHC Outputs - Field Definitions. (Continued)
Name Definition