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Cypress Confidential
Calibrating the WPT – Step 1
1. Remove the front cover of the WPT and make sure that the WPT is
acclimated to the ambient temperature.
2. Turn on the air compressor
Notes
1. Acclimating the thermostat can take 30 minutes or more after attachment to the wall. The bimetallic strip is
very sensitive to body heat. Keep hands and breathe away from WPT to minimize calibration error.
2. The black throttling range adjuster has been factory set to the location marked on the lever. The factory
setting provides a Throttling Range (TR) of 4°F. This TR adjuster MUST NOT BE MOVED in order to ensure
proper operation and accuracy of the WPT. The throttling range is the amount of temperature change
required for the WPT to produce a full output change.
3. Single pipe WPT might take a longer time to respond during calibration. Please allow sufficient time to
calibrate the WPT accurately.
Reference: WPT Installation Manual - Section 2.3
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