System Specifications - RefPlus Guardian+ RC-A Programming Manual

Opti-mist plus adiabatic control
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7. Use
to select SYSTEM SPECIFICATIONS and then press
The display will read:
P-LAN indicates the controller's P-LAN address.
8. Press
.
9. Using
, set the system selection, either Pulsing Valve or Modulating Pump.
Pulsing Valve: This is the main and most common system selection. It uses a single-speed centrifugal pump and
the amount of water delivered to the nozzles is controlled by a pulsing valve. Refer to Operation Principle
on page 5.
Modulating Pump: Uses a variable speed pump to change the water flow. Refer to Operation Principle on page
10. Press
to confirm your selection.
11. Using
, set the method with which the system will be controlled, either according to the fluid temperature or
the outside temperature. An arrow pointing to the fluid temperature reading (FT) or to the outside temperature reading
(OT) on the main screen is shown, depending on the selected control method.
Fluid temperature:
The cooling demand (CD) is based on the fluid temperature (FT); the amount of water delivered
to the nozzles is then proportional to the fluid temperature (the probe is usually installed on the
cooler coil outlet). The controller also considers outside temperature to determine the amount of
water that must be delivered to the nozzles. Refer to the Operation Principle on page 5.
Outside temperature: The cooling demand (CD) is based on the outside temperature (OT). The amount of water
delivered to the nozzles is then proportional to the outside temperature. Refer to the Operation
Principle on page 5.
12. Press
to confirm your selection.
13. Press
, the display will read:
If Pulsing Valve was previously selected, the Pulses length parameter is shown, so follow steps 14 and 15. If Modulating
Pump was selected, continue to step 16 on page 18.
14. Press
.
15. Using
, select either Scaler or Ladder.
Refer to the Operation Principle on page 6 to page 8 for information regarding the Scaler and Ladder methods.
R

SYSTEM SPECIFICATIONS

PLAN:01
System selection:
Pulsing valve
Control by:
Fluid temperature
SYSTEM SPECIFICATIONS
Pulses length: Scaler
PumpON when CD is: 010%
OutTempLW:
OutTempLW band:
OutTempLW Mode:
to confirm your selection.
22.0
C
o
05.0
C
o
Prop
9.
17

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