Application Guide

Pressure Independent VAV Applications with CEP/CSP-4000 Series 43 CTE-5202 Applications Guide, AN0912A Rev. H
Pressure Independent
This section gives sample applications for using the
CTE-5202 as a substitute for the CTE-1000 series
thermostats with the CEP/CSP-4000 series VAV
controller-actuators. (See also the CEP-4000 Series
Applications Guide. For replacement of the CxP-
4xxx with the CSP-4702, see Replacing a CEP-4xxx
or CSP-40xx/42xx/44xx/46xx or CSE-484x on page
21.)
The CEP-4000 series uses SSE-1000/2000 series ow
(“hot wire anemometer”) sensors. These sensors
consists of two coils of wire mounted in the air
stream: one monitors airow, while the other is a
reference used for duct temperature compensation.
These sensors also include a temperature sensor for
use with heating/cooling “changeover” applications
(which requires an additional relay module).
The CSP-4000 series uses SSS-1000 series dierential
air ow sensors or a pitot tube instead of the SSE-
1000/2000s. Otherwise wiring is the same as with the
CEP-4000 series used in these examples.
To manually drive the controller/damper open or
closed (with 24 VAC on terminals 9 and 10), remove
the wiring to termi-
nal 6, and temporarily
jumper terminal 6 to:
• Terminal 5 (9.1 VDC) = Open
• Terminal 4 (– VDC) =
Closed
NOTE: Full rotation
may
take ve to six minutes
because the actuator
rotates at 18° per minute.
VAV and CAV Applications
with CEP/CSP-4000 Series
CAUTION
Do not short terminals 12 and 14, 4 and 5, or 2
and 4.
NOTE: For replacements of the CTE-1x1x thermo-
stats, see Cross-References on page 8.
NOTE: The old CSP-40xx/42xx/44xx/46xx models
were discontinued in Jan. 2014 and are
very dierent from the new CSP-4702. See
Pressure Independent VAV Applications
with CSP-4702 on page 19.
CEP-4xxx
24 VAC CTE-5202
Damper
SSE-1000 Series Sensor
SET
POINT
7
6
5
4
3
2
1
8
9
10
11
12
13
14