Switchbox C22

Switchbox for Mark Calflo

Switchbox for controlling a Calflo with high/low fan based on room temperature with minimum inlet temperature restriction. With day/night temperature monitoring.

Specifications:

• Steel box with cylinder lock
• Regulator for the room temperature and minimum inlet temperature restriction using 2-10Vdc control signal
• Selector for heat / off / ventilate
• High/low selector supply fan selector
• Digital time switch with weekly programme
• A holiday switch to allow the device to be operated at the night-time temperature over longer periods
• A digital timer (0-6 hours) to switch to the daytime mode temporarily outside the clock programme
• Failure lamps to indicate:
  • A burner failure;
  • A supply air pressure failure
  • A burner fan thermally off failure
  • A maximum/gas pressure failure
  • A dirty filter failure
• Operating lamps to indicate:
  • Burner on
  • Burner off
  • Supply fan low
  • Supply fan high
  • Release control
• Reset button to reset a burner failure
• voltage free contact to start extraction (24V max)
• voltage free contact to switch extraction to high (24V max)
• voltage free contact (supply to third parties) to check whether extraction is operating at low
• voltage free contact (supply to third parties) to check whether extraction is operating at high
• A room temperature sensor supplied separately
• A duct temperature sensor supplied separately for the minimum inlet temperature restiction