Applications Guide
Table Of Contents
- CEP-4000 General Information
- SSE-1000/2000 Flow Sensors
- Thermostats
- VAV Single Duct Cooling/Heating Applications
- VAV Dual Duct Cooling/Heating Applications
- Index
CEP-4000 Series VAV Flow Controller-Actuators 21 Applications Guide
Heating/Cooling Constant Volume w/ Hot Deck Make-Up
NOTE: Minimum and maximum to be set on the
cooling side for VAV.
Constant volume seing must be equal to
or greater than cooling maximum.
Set constant volume on the heating side by
adjusting maximum full counter-clockwise
and adjusting minimum for the desired
constant volume.
The following application is designed for dual-duct
installations requiring a constant volume of airow
into the space at all times. In this application, a
single-duct cooling controller is mounted on the
cold air duct, and its minimum and maximum
ow is reset by the room thermostat. A second
“slave” controller is mounted on the hot air duct
as a constant volume unit, with the ow sensor
measuring downstream “total ow” into the
space (the “slave” controller has no reset from the
thermostat).
In summary, as the cold deck resets from maximum
to minimum ow, the hot deck controller senses
a decrease in “total ow” to the space, opens the
hot air duct to compensate, and thus maintains a
constant combined airow into the room.
(Former Ref. # APE-2-4005)