Instruction Manual

CSP-4702 4 Installation Guide
Static Pressure Control
Besides VAV applications, the CSP-4702 can also act
as a static pressure controller in such applications as
AHU or RTU bypass control. It is not then connected
to a thermostat. For information, see the CSP-4702
Static Pressure (Bypass) Control Application
Guide.
© 2014 KMC Controls, Inc. 036-019-04E
KMC Controls, Inc.
19476 Industrial Drive
New Paris, IN 46553
574.831.5250
www.kmccontrols.com; [e-mail]
More Information
For specications, see
the CSP-4702 Data Sheet
on the KMC web site.
For applications (with
the CTE-5202 thermo-
stat) and other informa-
tion, see the CTE-5202
Applications Guide.
Troubleshooting
No Rotation
NOTE: For about 15 seconds after power is applied,
no rotation occurs and one or both of the
LEDs will ash.
• Check that the shaft moves freely. (Press and
hold the gear disengagement lever and manually
rotate the shaft.)
• Check wiring. (See Wiring Issues section below.)
• Check for a tripped circuit breaker to the
transformer, for proper supply voltage from the
transformer (or power supply), and for enough
capacity (VA) for all connected devices. See their
respective data sheets and Tips for Connecting
24-Volt Power Application Note (AN0604D)
available on the KMC Controls web site.
• Check that the direction jumper is in the proper
position. See Rotation Direction on page 2.
• Check the polarity and level of the input signal
from the thermostat.
Wrong Rotation Direction or Stroke Range
• Check the position of the direction jumper. See
Rotation Direction on page 2.
• Check the ow limits (on the controller and the
thermostat). See Min. and Max. Flow Limits on
page 3.
• Check the adjustable stop position.
No Pressure Output Signal
• Check the wiring. (See Wiring Issues section
below.)
• Check air ow and sensor. Tubing should be free
of kinks and restrictions. Sensor must be oriented
in the correct airow direction.
Wiring Issues
• Check for correct wiring at the each device.
• Use a voltmeter and ohmmeter to check the
terminals for expected values.
• See Tips for Connecting 24-Volt Power Applica-
tion Note (AN0604D).
NOTE: Wiring must be adequate to avoid
excessive voltage drop on long runs! Allow
plenty of “cushion” in measurements. A
meter may be too slow to register transient
dips or peaks during startup.
For information about
using the CSP-4702 as
static pressure controller
in AHU/RTU bypass
applications, see the
CSP-4702 Static Pressure
(Bypass) Control Ap-
plication Guide.