Application Guide

CSP-5001/5002 VAV Flow Controller-Actuators 3 Applications Guide, Rev. B
Controller, Sensor, and Thermostat Functions
Typical Voltage/Velocity Chart
The chart below illustrates typical voltage versus ve-
locity using a CSP with a SSS-1002, single-point ow
sensor. Because this is a ow-through type sensor,
the tubing type will directly aect ow readings. To
maintain a close correlation with the factory cali-
bration, installations must use 24 inches of 1/4-inch
OD x 0.040 wall tubing without restrictions such
as ings or kinks. The voltage corresponds to both
“IN” (for desired ow) and “OUT” (for actual ow)
terminals.
The Thermostat: The CTE-5100 series thermostats
are designed for use with the CSP-5001/5002 Control-
lers and/or most other controls (using a half-wave
rectier power supply) requiring a 0–10 volt signal.
Some of these controls are: the REE-1000/5000 series
relays, the MEP-1200/5000 series actuators, and/or
the VEP series valves. Utilizing the MEP actuators,
the CTE-5100 allows seing minimum and maxi-
mum control points on the thermostat (see Thermo-
stat Checkout/Calibration Procedures).
Various thermostat models are available in this series
such as: single setpoint DA (5101), single setpoint
RA (5102), dual setpoint DA and RA (5103/5104), and
dual setpoint both DA (5105).
The Controller: The controller is designed to:
1. Receive a “desired ow” signal from the
thermostat (0–10 volts on terminal “IN”), or
the minimum and maximum seings on the
controller itself.
2. Compare it to “actual ow” (on terminals
“out” and “–”).
3. And drive the box open/closed, as required to
match airow.
LEDs show which direction the actuator is rotating
(green when opening, red when closing). The CSP-
5001 is factory-set to close counter-clockwise; the
CSP-5002, clockwise. However, rotation direction is
eld-changeable via jumper selection (see the Rota-
tion Setup section).
The CSP-5001 is factory set to measure airow of
0–3300 fpm at a 0–10 volt signal. This airow is eld
adjustable to match a specic requirement within
these ranges (see the Controller Calibration section).
The Flow Sensor: The CSP-5001/5002 controllers use
an onboard ow-through sensor utilizing twin plati-
num resistance temperature detectors to electroni-
cally measure air velocity in the duct.
0 500 1000 1500 2000 2500 3000 3500
Velocity (Feet Per Minute)
(CSP–5001 with the SSS–1002 in a 5-inch duct and 24 inches of 1/4-inch OD x 0.040 wall tubing)
0
1
2
3
4
12
11
10
9
8
7
6
5
Volts