KMC Controls CTC-1600 CTC-1621, CTC-1622 Room Thermostat Installation Guide

The CTC-1621 and CTC-1622 Room Thermostats are designed for dependable, long-term reliability and performance. They are factory calibrated and do not require further calibration. These thermostats are compatible with two-pipe pneumatic systems and can be mounted horizontally or vertically, either to a 2" x 4" electrical box or a hollow wall.

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KMC Controls CTC-1621, CTC-1622 Room Thermostat Installation Guide | Manualzz

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Key features

  • Two-pipe pneumatic system
  • Factory calibrated
  • Horizontal or vertical mounting
  • Electrical box or hollow wall mounting
  • Adjustable throttling range
  • Removable scale plate
  • Setpoint stops for range limitation
  • Window and blank cover styles

Frequently asked questions

Refer to the 'Electrical Box Mounting' section in the Installation Guide for detailed instructions on mounting the thermostat to an electrical box. You will need to attach the backplate, level the box, fit the aluminum plate, pass the tubing through the access hole, make connections, and finally mount the thermostat to the backplate using the screws provided.

To change the throttling range, first remove the scale plate. Then, locate the black 'TR' adjuster and use a 1/16" hex wrench to gently rotate it back and forth while sliding it to the desired value. Remember to rotate the adjuster back to a 'square' position after adjustment. Finally, replace the scale plate.

The CTC-1621 and CTC-1622 thermostats use 3/32" ID Tygothane tubing (HFO-0028) for all connections. This tubing is specifically designed for pneumatic systems and ensures reliable and efficient operation.
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