The versatile Setpoint version of the Variable Speed “00” can be set up
to deliver a fixed temperature, maintain a specific temperature drop
between sensor locations (DT), used as a bypass/shunt pump, or
integrated into a fan coil package to vary the speed of the pump based
on supply air temperature.
The 00-VS can be either direct-acting (speed increases on a temperature
decrease) or reverse-acting (speed increases on a temperature
increase). A typical direct-acting (limiting setpoint) application
would be for boiler protection, where the 00-VS is installed on a
bypass loop. If the return temperature starts to drop below the set
temperature (75°- 165°F), then the speed of the pump will be increased,
bypassing hot water to protect the boiler. The 00-VS can be used in
radiant injection mixing systems where you want to set a fixed
supply-water temperature. Through the use of the setpoint dial on the
PC board, you can select
any temperature from 30°-210°F. If desired, a boiler
protection sensor can be installed to protect the boiler from flue gas
condensation. In the DT mode, the pump speed is varied to maintain a
set
temperature drop (5°-50°F) across a boiler or heat exchanger, ideal for
snowmelt applications.
Features:
- Adjustable Setpoint (30° - 210°F)
- Adjustable Temperature Difference (DT) (5° - 50°F)
- Boiler Protection (135°F)
- Boiler Protection as a Limit Control (75° - 165°F)
- LED Status Panel
- Direct or Reverse Acting
- Selectable Output Response Speed
- Linear or Logarithmic Output
- Pump Exercise (10 Seconds After 3 Days of No Operation)
Video: Variable Speed Pumps
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