WattMaster WM-WCC3-TGD-01B - Manual (Page 825)

VAV/Zone Confi guration & Setup
There are a few confi guration selections available which can be used
to tailor the software operation to match the mechanical equipment
the controller is installed on. These are programmed using a personal
computer with the WCC III front end software installed on it. See Sec-
tion 4 - SCUSCR.exe Screen Descriptions for detailed programming
information.
General
Several options are available to confi gure the VAV/Zone Controller for
the appropriate equipment it is installed on. All of these options can be set
from the “Setpoints” menu. Again, please refer to Section 4 - SCUSCR.
exe Screen Descriptions for detailed programming information.
Box Control Method
Set this confi guration item for the type of box the VAV/Zone Controller
is used on. The options available are:
0 = Cooling Only Box (With Reheat if Required)
1 = Heating/Cooling Changeover Box
2 = Series Fan Powered Box With Reheat
3 = Parallel Fan Powered Box With Reheat
Damper Operating Mode
This option sets the direction of rotation the damper moves when driving
towards its full open position. The options available are:
0 = Direct Acting ( Clockwise-to-Open Damper)
1 = Reverse Acting ( Counterclockwise-to-Open Damper)
Pressure Independent Boxes-Airfl ow @ 1” W.C.
If this is a pressure independent box, this option allows you to calibrate
the box CFM correctly using the box manufacturer’s “ K” factor. Enter
the correct “K” ( CFM) factor for the inlet diameter of the box you are
confi guring.
NOTE: VAV/Zone controllers will automatically operate as Pres-
sure Independent if the Box Size Constant is greater than
0 CFM.
Expansion Relays - Steps of Reheat
If the box has reheat supplied by an electric coil, this option must be set
for the number of electric heating stages on the box. If the box has hot
water heat with a 2 position hot water valve, set the number of stages
to “1”. For hot water heat with a proportional hot water valve, this must
be set for “0”. Options available are:
0 = No Staging
1 = 1 Stage of Reheat
2 = 2 Stages of Reheat
3 = 3 Stages of Reheat
Proportional Heating Signal
If the box has hot water reheat using a proportional hot water valve, a
0-10 voltage signal is required by the hot water valve you are using.
Allow Box Heat With AHU Heat
If the box you are using has reheat or auxiliary heat, confi guring this
setting to 1=Yes will allow the box heat to operate at the same time as
the HVAC unit heat. Options available are:
0 = No
1 = Yes
NOTE: For this to work correctly, the VAV/Zone controller must
be able to check for the Main Fan status.
Main Fan Status
If the VAV/Zone Controller is installed on a non-fan powered box that
has reheat, set this option to “Yes” in order to enable box reheat only
when the HVAC unit fan is running. A full description of how this setting
affects the various box types in the occupied and unoccupied modes is
contained under the “Mode Sequence” heading that follows later in this
manual. Options available are:
0 = No Heat can operate without fan
1 = Yes Heat cannot operate without fan
NOTE: For this to work correctly, the VAV/Zone controller must
be able to check for the Main Fan status.
VAV/Zone Confi guration
21 VAV/Zone Controller Actuator Package Technical Guide
Sequence of Operations