Table of Contents
Advertisement
Start-up
Point Name/Description
Optional Ctrl Type – The type of sensor used on the controller's RH/CO2
setting determines the control function that is used to override the damper operation.
Options:
RH Control – zone dehumidification
– Indoor Air Quality control
IAQ Control
PD (Pressure Dependent) Control:
Direction Clockwise – If Damper Actuator is set to Built-in actuator
the damper's position when it rotates clockwise.
Cooling Min Damper Position
controls to when the air source mode is Cooling, Vent, or Free Cooling and the
space requirements for cooling are at a minimum. We recommend that you set this
no lower than 10%.
Cooling Max Damper Position
controls to when the air source mode is Cooling, Vent, or Free Cooling and the
space requirements for cooling are at a maximum.
Reheat Min Damper Position – For Single Duct units with ducted reheat. Set to the
desired damper position at which the reheat will provide optimum performance.
This value is compared to the Cooling Min Damper Position
of the two values determines the damper position.
Heating Min Damper Position
controls to when the air source mode is Heat and the space requirements are at a
minimum.
Heating Max Damper Position
controls to when the air source mode is Heat and the space requirements are at a
maximum.
Vent Position
– The ventilation damper position the terminal controls to when the
air source mode is Vent and the terminal mode is not in the Heat or Cool mode. If
Linkage is not active, the zone determines vent mode by verifying that its SAT
sensor is between 65°F and 80°F.
Linkage properties
The i-Vu Open Control System uses linkage to exchange data between the zone terminals and their air source
to form a coordinated HVAC system. The system's air source controller, zone controllers, and bypass controller
are linked so that their data exchange can be managed by one zone controller configured as the VVT Master.
The system can have a maximum of 31 zone controllers (VVT Master and slave controllers).
The linked controllers must be sequentially addressed. The VVT Master must have the highest address, the
bypass controller the next lower address, and then the slave zone controllers.
To set up linkage, you must define the properties below only for the VVT Master controller. If you are
configuring a slave controller, do not change any Linkage settings as the defaults are for a slave.
After you define the properties, the VVT Master immediately begins to send zone data to the air source and
receive information from the air source.
34
– The minimum damper position the terminal
– The maximum damper position the terminal
– The minimum damper position the terminal
– The maximum damper position the terminal
Default/Range
input. This
D:
R:
, set this field to
D:
R:
D:
R:
D:
R:
D:
R:
value, and the greater
D:
R:
D:
R:
D:
R:
None
None
RH Control
IAQ Control
Closed
Open/Closed
20%
0 to 100%
100%
0 to 100%
45%
0 to 100%
20%
0 to 100%
20%
0 to 100%
50%
0 to 100%
VVT Zone Controller
Hide quick links:
Advertisement
Table of Contents
