Application Guide
CSP-5001/5002 VAV Flow Controller-Actuators 20 Applications Guide, Rev. B
Fan Induction with 2-Stage Electric Heat
NOTE: The fan has an adjustable
start point between 3 and 8
volts.
The CTE-5101 electronic thermostat
is a single-setpoint thermostat for
cooling (DA). In this application, the
thermostat is used with the REE-
5002 relay module, a fan, and two
coils (for two stages of reheat). The
REE-5002 was designed primarily
for use with VAV fan-powered
induction boxes.
If the thermostat drops below
setpoint, the relay senses the
decrease in voltage and starts the
fan. As the temperature continues to
drop, the rst stage of reheat begins,
and the second stage of reheat
follows if the thermostat is still not
satised. The process reverses as the
room temperature begins to rise.
NOTE: The “X” Terminal is used
for measuring fan trip
voltage only.
(Former Ref. # APE-3-5001)