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RTHC-SVN02C-EN
The actuator is factory set with a “close limit” of 15 degrees open. The “open limit” is
factory set for 90 degrees open.
NOTE: The “close limit” of 15 degrees open is a nominal opening for a typical system
with typical pressure drops.
“Zero” and “Span” are used to adjust the corresponding mA signal. “Zero” is factory
set such that 4 mA corresponds to 15 degrees open and 20 mA corresponds to 90
degrees open.
The “Sensitivity” is factory set to allow the valve to operate with the largest allowable
number of steps. If the valve appears to sluggish the sensitivity may need to be
decreased.
CAUTION
Equipment Damage!
Valve should be adjusted such that overheating of the condenser water pump
does not occur at reduced flows. It is recommended that the flow rates remain
above 25% of the flow at the best efficiency point. Failure to properly adjust
regulating valve may result in equipment damage.
Important:
An improperly sized water valve can result in unstable operation and
throttling difficulties. Follow the valve manufacturer’s guidelines when sizing the
valve.
