Specifications

20
• +10 degrees below heating set-point
The high and low zone temperature alarm trip points may be customized via the Alarm
Configuration Screen utilizing the BACview terminal. The remote zone sensor hardware is
validated if appropriately configured/installed.
Fan Mode
The Fan Mode option is used to select the type of fan hardware being used with the unit. Fan
hardware is application specific and it will determine the behavior for the specific application for
which it is being applied.
The Fan option may be configured with one of the following options:
• Start/Stop (also known as On/Off signaling)
• Variable Frequency Drive (or Variable Fan)
Start / Stop Fan
The fan control signal is provided on BO-1 for both the FHP-560 and FHP-583 control. Fan
operation is interlocked with heating and cooling operations. The fan will be engaged during
heating and cooling operations. The fan will always run (interlocked) when heating or cooling.
Variable Frequency Drive (VFD) Fan
The VFD option is used only with the FHP-583 controller. The VFD uses an analog signal (0-
10V) to control the speed of the blower. Blower speed is modulated by a PID loop to maintain a
constant static pressure, therefore a static pressure measurement is required as input for the
VFD blower option. Horizontal units do not allow for mounting of the VFD inside the equipment
and require the VFD equipment to be mounted close to the unit. An inside-wall close to the unit
is typically used for mounting an external VFD.
Fan Operation
When the unit control is set for occupied operation the fan will run continuously as the default
behavior. The fan mode may be modified to cycle only during heating and cooling operation.
During unoccupied operation the fan will only cycle during a call to maintain a heat or cool set-
point.