WattMaster VAV System - Manual (Page 31)

Operator Interfaces
Technical Guide
31
Setpoint Screen #8
HC Box Spts IDxxxx
Damper/Airflow Spt
Fixed Pos: xxx %
Many times while troubleshooting a system, it is useful to have the zone
damper set to a specific damper position or airflow setting. This set-
point can be used to determine where the damper/airflow will remain
when the box controller receives a Force to Fixed Position command
from the user.
Description Minimum Default Maximum
Fixed Pos 0% or
0 CFM
0% or
0 CFM
100% or 30000
CFM
Setpoint Screen #9
HC Box Spts IDxxxx
Zone Alarm Offsets
Hi Zone......: xx
° F
Lo Zone......: xx ° F
The VAV Box Controller can be setup to generate an alarm anytime
the Zone Temperature exceeds the user defined alarm limits for a user
defined period of time. A High Temperature Alarm Setpoint is created
by adding the Hi Zone Alarm offset to the current Cooling Setpoint.
The Low Temperature Alarm Setpoint is created by adding the Lo Zone
Alarm offset to the current Heating Setpoint. If the zone temperature
exceeds either of these limits for a period defined by the Alarm Delay
setpoint, the controller can generate an alarm callout if all the options
required for this to occur are installed.
Description Minimum Default Maximum
Hi Zone Alarm +1
°
F +30
°
F +50
°
F
Lo Zone Alarm -1
°
F -30
°
F -50
°
F
Setpoint Screen #10
HC Box Spts IDxxxx
Zone Alarm Delay
Must Be Out Of
Limits For.: xxx Min
As mentioned above, if the user configures the controller to generate
zone temperature alarms, this is the amount of time the temperature
must be outside the alarm limits before an alarm is generated.
Description Minimum Default Maximum
Out Of Limits 1 Min 30 Min 300 Min
Setpoint Screen #11
HC Box Spts IDxxxx
Day/Night Schedule
Control #: x
0=AHU 1-7=Scheduler
This screen allows you to set the VAVBOX controller to operate on a
remote schedule instead of the schedule that is contained in the WMVAV
controller.
Description Minimum Default Maximum
Schedule Number 0 0 1 to 7
Setpoint Screen #12
HC Box Spts IDxxxx
Maximum Slide Offset
Effect on Spt.: x
° F
If the Flush Mount Wall Sensor has the optional Setpoint Slide Adjust,
this is the maximum amount the user can adjust the heating and cooling
setpoints up or down as the slide is moved from the center position to
its full up or down position
Description Minimum Default Maximum
Effect on SP 0
°
F 0
°
F 6
°
F
Setpoint Screen #13
HC Box Spts IDxxxx
Push-Button Override
Duration : x.x Hr
If the Flush Mount Wall Sensor has the optional Push-Button Override,
this is the amount of the Box Controller will resume using its Occupied
Setpoints during unoccupied mode. This will generate a call for the Air
Handler to start its fan and provide heating or cooling, depending on
how the user configures the Air Handler.
Description Minimum Default Maximum
Duration 0.0 Hr 0.0 Hr 8.0 Hr