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CNT-SVX05A-EN
Sequence of operation
Duct static pressure (when present) is always controlled when the supply fan is
running. Freeze avoidance in emergency override can force the heating and
cooling valves open.
Water valve override
To support water balancing, the controller includes a communication variable
(nviValveOverride) that allows a user to specify the desired state of all water
valves. The states supported are:
• Open all valves
• Close all valves
Water valve override remains active until the override is removed. The
controller resets itself if the variable is not refreshed within ten hours or any
other value except open or closed is written to it.
The Rover service tool or another communicating device is required to access
this feature.
