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Appendix A: VAV Zone II Points/Properties
Service Configuration
Navigation:
i-Vu® / Field Assistant:
Point Name/Description
Terminal Type – The type of zone terminal that the controller is installed on. Not
available for VAVB1.
Terminal Size – Shows the value entered as the Cooling Max Airflow in the Flow Control
object.
Terminal Fan Airflow – Enter the terminal fan airflow in cfm (liters/second). Used in
performance calculations only. Available only on fan-enabled terminal box.
Disable Series Fan – When set to Enable, the controller disables the fan on a series-
type terminal when the airflow setpoint equals 0. (We do not recommend configuring
the minimum occupied airflow setpoint to 0, as this does not meet minimum ventilation
requirements.)
External Actuator Enable – Enable if the controller's analog output is used for an
external high-torque or slave actuator. Enabling this setting disables the output for
Modulating Hot Water or Combination reheat functions.
Heat Type – The type of supplemental reheat that the zone controller will control. The
heat may be used with system heat, depending on the space temperature demand.
Options:
None – no heat
Modulating – ducted or baseboard modulating hot water
Two Position – two position hot water
Staged EH – ducted or baseboard electric heat
Combination – combination baseboard modulating hot water and ducted staged
electric heat
CV Modulating – constant volume modulating reheat used for single duct terminal
application with modulating hot water reheat (typically used in hospital applications)
SCR Electric – modulating control for SCR-type electric heater
Ducted Heat – Determines whether the zone is using ducted heat or baseboard. If Heat
Type is Combination, set this field to Yes for ducted heat.
VAV Reheat – If set to Enable and Heat Type is Modulating, a need for heat first
modulates the supply air temperature up to the configured Maximum Heating SAT
(95ºF [35°C] default). A further heating demand will increase the airflow from the
minimum rate up to the configured Auxiliary Heat Min Airflow. Applicable to single duct
terminals only.
VAV Zone II Controllers
Installation and Start-up Guide
Properties
Control Program
>
82
Configuration
Service Configuration
>
>
Default/Range
D:
Single Duct
R:
Single Duct
Parallel
Series Fan
D:
2100 cfm
(991.2 liters/second)
R:
0 to 99999 cfm
(liters/second)
D:
1000 cfm
(472 liters/second)
R:
0 to 99999 cfm
(liters/second)
D:
N/A
R:
N/A
Enable
D:
Disable
R:
Disable/Enable
D:
None
R:
None
Modulating
Two Position
Staged EH
Combination
CV Modulating
SCR Electric
D:
Yes
R:
No/Yes
D:
Enable
R:
Disable/Enable
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