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WEBVISION™
55 95-7769—01
• Fan fail
When configured with an air flow detector, the controller
protects equipment by disabling the system when the fan
fails
• Changeover
The controller operates two-pipe FCUs configured with a
changeover input.
FCU Input/Output Specifications
Table 31 lists the FCU Input/Output specifications.
FCU Outputs
Description
FCU applications can have a variable number of heating and
cooling stages. The number of pipes used on the unit could be
two or four. The outputs could be of staged, PWM, floating, or
Thermal type. In addition the outputs can be of Change over
mode.
Purpose
Define the operation of the controller outputs and the type of
fan coil unit to be controlled.
Mode
Configuration can be performed with the wizard Off-line or
On-line.
Procedure
1. Click the Outputs button on the left pane to open the
Output Configuration page.
2. Enter information into available fields.
3. Click Commit to save the settings or Reset to revert to
the last saved settings.
4. Click Next to display the Input Configuration page.
FCU Outputs fields
Table 32 on page 56 lists the FCU Outputs fields and
definitions.
Table 31. FCU Input/Output Specifications.
Input/Output Function Characteristic
Inputs
Digital Window/
occupancy/
changeover/air
flow
Closed ≤ 400 ohm,
open ≥ 10K ohm
Analog/Digital
(Wall Module
connection only)
Fan speed/
Override
Resistor Network
Analog Temperature
Sensor
20K ohm NTC
Analog
(Wall Module
connection only)
Setpoint
adjustment
10k Ohm
Outputs
Digital
(Wall Module
connection only)
Override LED 0/5 Vdc
Triac (2 pairs)
(See Table 30 for
options)
Heat and cool 24 Vac, 250 mA
max. continuous,
650 mA max. surge
(≤30 sec)
Relay (3) Fan Switching 20 to 253 Vac, 3A
max.
High Power relay
(W7725D, F only)
Electric heat
(resistive load)
20 to 300 Vac, 10A
max., 6A max.