Pressure Independent VAV Applications with CEP/CSP-4000 Series
45
CTE-5202 Applications Guide, AN0912A Rev. D
Cooling
~
T
T
AI1
AO
1
AO
2
CTE-5202
Thermostat
24 VAC @ 10 VA
~
–
(Phase)
(Neutral)
1
2
3
7
6
5
4
3
2
1
8
9
10
11
12
13
14
CEP-4xxx
Controller-Actuator
SSE-1001/1002
Flow Sensor
Cooling Max.
Cooling Min.
0 fpm
Setpoint
(
Colder
Room Temperature
Warmer
)
3000
fpm
Air
Flow
Min.3000 fpm
03000 fpm
CTE-5202 thermostats can use CEP/CSP-4000 series
electronic VAV controllers to operate damper boxes
in a pressure-independent VAV system. As shown
in the diagram, a “requested flow” voltage signal
(AO1) is connected to the CEP-4xxx to adjust airflow
from minimum to maximum flow according to
space demand. Minimum and maximum flow limit
adjustments can be made at the thermostat or at the
controller.
Select Sequence
1
(from the CTE-5202
SYSTEM
Change Configuration on page 6
replaces a
CTE-1001/1101/5001/5011 with Direct
Acting reset.)
(See also the Cooling section in the
Select Sequence 1