Application Guide

Pressure Independent VAV Applications with CEP/CSP-4000 Series 44 CTE-5202 Applications Guide, AN0912A Rev. H
9.1 VDC vs. 24 VAC Power Options
The CTE-5202 can operate from the 9.1 VDC output
supplied by the CEP/CSP-4xxx, but AO1 and AO2
will not be able to aain a full 6 VDC (e.g., a maxi-
mum of about 5.3 VDC) output to the 0–6 VDC CEP/
CSP-4xxx inputs. This means the maximum air ow
controlled by the CEP-4xxx can be only around 2000
fpm instead of 3000 fpm. However, this will still
cover nearly all applications.
(See the Voltage/Velocity Correlation chart in the
CEP-4000 Series Applications Guide.)
~
T T
AI1
AO1 AO2
CTE-5202
Thermostat
24 VAC @ 10 VA
~
–
(Phase)
(Neutral)
7
6
5
4
3
2
1
8
9
10
11
12
13
14
CEP-4xxx
Controller-Actuator
24 VAC Power to CTE-5202
9.1 VDC Power to CTE-5202
OR (but NOT Both)
If more than about 2000 fpm is required, use 24 VAC
from a transformer to power the CTE-5202. This can
easily be done by connecting the ~ terminal on the
CTE-5202 to Terminal 10 (24 VAC, phase) on the
CEP-4xxx instead of Terminal 5 (+9.1 VDC).
CAUTION
Connect the CTE-5202 to the CEP-4xxx’s
Terminal 5 OR 10, but not jumpered to both.