VAV/ZONE CONFIGURATION
VCC-X Operator Interface SD
73
VAV/Zone Confi guration Screens
Confi guration Screen #3 - Voting Zone
XX Box Cnfg IDXXXX
Is This Box a
Voting Zone..: YES
Use < Or > To Change
If this is a Zoned System, select YES so that the box can be included
as a voting zone.
Confi guration Screen #4 - Pressure
Independent Airfl ow Constant
XX Box Cnfg IDXXXX
Pr Independent Boxes
Airflow @ 1” WG
Constant..: 1200 CFM
If this is a Pressure Independent Box, you must enter this airfl ow
constant so that the CFM readings can be correctly calculated. This
airfl ow constant is provided by the box manufacturer and depends
on the diameter of the duct.
Confi guration Screen #5 - Expansion Relays
Heating Stages
XX Box Cnfg IDXXXX
Expansion Relays
[Optional]
Steps of Reheat.: 2
If you require the VAV/Zone Controller to control reheat for the zone
it is installed in, you must include a relay expansion board and then
confi gure the number of heating stages (1, 2, or 3) that it will be
controlling whenever there is a heating demand in the space. Enter
<0> if you don’t require this option.
Confi guration Screen #6 - Proportional
Heating Signal
XX Box Cnfg IDXXXX
Proportional Heating
Signal..: 0 - 10 VDC
Use < Or > To Change
Select 0-10 VDC or 2-10 VDC as the range of the proportional heat
output.
Confi guration Screen #7 - Box Heat Allow
XX Box Cnfg IDXXXX
Allow Box Heat With
HVAC Heat....: NO
Use < Or > To Change
Select YES to allow the Heating Relay’s Controlling Box Heat to
remain on even when the HVAC unit is in Supply Air Heating Mode.
This is used as a method to provide supplemental heat if for some
reason the HVAC heat cannot satisfy the heating demand.
Confi guration Screen #8 - Main Fan Status
XX Box Cnfg IDXXXX
This Unit Needs Main
Fan Status...: NO
Use < Or > To Change
This setting only applies to the unoccupied mode of operation. Select
YES to activate the heating stages only when the main fan is operat-
ing on non-fan terminal units. For series fan terminal units, if this
setting is set to YES, the series box fan will only run when the main
HVAC unit fan is running or when a space heating demand is made.
For series fan terminal units, if this setting is set to NO, the series
box fan will only run when a space heating demand is made. This
setting has no effect on the parallel fl ow fan terminal unit.
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