Valent VX Series Controller26
Control Variables
Energy Recovery
deFrosT ramp
This screen displays the temperature at which the unit will enable frost control
mode if necessary (factory default = 5ºF) This screen only appears if the unit has
an energy recovery wheel and a frost control method was provided with the unit.
Upon sensing a high differential pressure across the energy wheel, the unit
will enter defrost mode if the outside air temperature is below this temperature
setting. Max active time and min off time will be available if the frost control
method was provided as timed exhaust or cycle wheel.
energy recovery wheel jog FuncTion
This screen display the energy recovery wheel jog function. This screen only
appears if the unit has an energy recovery wheel and stop wheel economizer
method for control.
Momentarily enables the wheel in order to expose a new section to the airstream.
The Energy Recovery menu allows the user to adjust energy recovery wheel
sequence set points.
Menu
energy reducTion only conTrol.
If enabled, the OA damper and recirculation damper will not modulate during
economizer. Instead, only the energy recovery wheel will be stopped to ensure no
energy is transferred from the supply airstream and exhaust airstream.
economizer seTTings
There is a built-in hysteresis that disables economizer above the economizer set
point.
(Example: If economizer uutside dry bulb = 65°F, economizer operation is
disabled above 67°F).
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