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ARTC-SVX007A-EN
Figure 37. Delta temperature control screen
Pass-Through
Pass-through function takes an external Signal and passes
it directly to the pump.
Figure 38. Pass-through screen
Dual-Speed Control
For use with Free Cooling to increase speed to overcome
the additional pressure drop of the inline coils:
• Free Cooling Disabled – send low speed to pumps.
• Free Cooling Enabled – send high speed to pumps.
Figure 39. Dual speed control screen
Flow Control
If Flow meter present, pumps are control between max and
min speed to maintain constant flow.
Figure 40. Flow control screen
Primary/Secondary Control (Chiller Array)
The Primary/Secondary functionality allows an array on n
or n+m chillers to be controlled by one (Primary) controller.
Where n is the number of chillers in the array and m is the
number of chillers in the array that are designated as
"Backup" nodes.
To enable use Manager/Subordinate functionality, click
Chiller Array Control on the HMI Configuration screen so
that it displays Enabled.
Figure 41. Chiller array control disabled screen.
Operating Procedures
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