Application Guide

CEP-4000 Series VAV Flow Controller-Actuators 16 Applications Guide
Cooling with Proportional Hot Water Reheat
In this application, with limits at the thermostat, the
CTE-1004 (DA cooling and RA heating) is used in
conjunction with the REE-4006 time proportioning
relay module and the (NC) VEP-12/22/34 series hot
water valve. The REE-4006 relay is designed for time
proportioning control of electrical hot water valves.
Aer the thermostat drops below setpoint, it
energizes the relay to open the hot water valve for
heat. As the thermostat temperature decreases, the
percent on-time of the water valve increases, forcing
it open. Once the thermostat is satised the process
reverses.
To use a NO hot water valve, replace the REE-4006 in
this application with the REE-4023 Relay Module.
NOTE: The transformer must supply a minimum
of 14 VA plus the requirement for the reheat
valve (14 VA).
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(Former Ref. # APE-1-4017)