For a Pelican thermostat to control a VFD or ECM fan motor, a Pelican PEARL will need to be wired to the thermostat. The PEARL provides configurations for up to five (5) fan speeds using a 0 – 10 Vdc output single. 0VDC = 0% fan speed and 10VDC = 100% fan speed.
This configuration is found under the Thermostat’s configuration > “select any thermostat” > Variable Speed Fan
Here are the Variable Speed Fan configuration options:
Cool Fan Speed – Stage 1: The fan speed setting during 1st stage cooling.
Cool Fan Speed – Stage 2: The fan speed setting during 2nd stage cooling.
Heat Fan Speed – Stage 1: The fan speed setting during 1st stage heating.
Heat Fan Speed – Stage 2: The fan speed setting during 2nd stage heating.
Ventilation Fan Speed: The fan speed setting during fan only cycle.