KMC Controls CSC-2000 User Manual

Installation Guide

CSC-2000 Series Overview

Reset Volume Controllers

CSC-2000 Series

The CSC-2000s are dierential-pressure (∆P), sub­master controllers with adjustable minimum and
maximum airow seings. A master controller,
typically a room thermostat, resets the CSC velocity
setpoint.

CSC-2000s are available as direct acting for normally
open VAV terminal units, and reverse acting for nor­mal closed VAV terminal units. Each unit is equipped
with separate adjustment knobs for minimum and
maximum airow seings. CSC-2001/2002s are
equipped with 0–10 reference dials, while all others
have blind adjustments. Calibrate all models using
standard airow measuring equipment.

The spring range of the actuator does not maer
to the controller. However, sucient main air is
required to provide the actuator with enough force
to operate the damper/linkage.

Any sequencing with other controllers, valves, or
pneumatic-electric relays must be sequenced with
the controller’s reset range, not the actuator’s spring
range.

These controllers are typically used on single-duct
applications but may be found in dual-duct appli­cations. When working on dual-duct applications
it may be necessary to work on one duct at a time
while closing o the other.

The CSC-2000 series controllers are position sensi­tive. See the Mounting section on the next page for

the proper vertical/horizontal orientation for the dif­ferent models.

CAUTION

Pneumatic devices must be supplied with clean,
dry control air. Any other medium (e.g., oil or
moisture contamination) will cause the device
to fail.

Connections Adjustments

CSC-2000 Series Reset Volume Controllers 1 Installation Guide

Specifications

Mounting

Output Sensitivity 0 to 1" range unit,

5 psig/0.02" wg (35 kPa/5 Pa)

0 to 2" range units,

5 psig/0.04"wg (35 kPa/10 Pa)

Main Air Pressure 15 to 30 psig (103 to 207 kPa)

Max. Signal Pressure 6" wg (1493 Pa) applied to

either port (X or Y)

Material Flame retardant plastic (beige

or gray)

Output Capability 0 to supply pressure

Weight 7.5 oz. (213 grams)

Temperature Limits

Operating 40° to 120° F (4° to 49° C)

Shipping –40° to 140° F (–40° to 60° C)

Direct Acting BEIGE units (CSC-2001/2003/2007/
2009/2017) are designed for normally open dampers

with direct-acting thermostats for cooling and re­verse-acting thermostats for heating.

As close to the ow sensor pickup as is feasible,
fasten the mounting bracket to the mounting surface
with two self-threading screws in the two 3/16 in.
(5 mm) holes. (Make sure to leave enough room to
make connections.)

The CSC-2000 series are position sensitive:

• The minimum and maximum ow limits must
be set (calibrated) in the same position the
controller will be mounted.

• The CSC-2001/2002 (with 0–10 molded plastic
dials) must be mounted horizontally with dial
adjustment knobs facing up.

• The CSC-2003 through CSC-2018 (no molded
dials) may be mounted horizontally (preferred),
with the adjustment knobs up or down, or
mounted vertically (the diaphragm inside must

be in a horizontal or vertical plane).

NOTE: If replacing a CSC-2001-22 or CSC-2002-22

(designed for vertical mount and now
obsolete), use the CSC-2001 or CSC-2002 as
appropriate and mount dials face up or use
the CSC-2003 or CSC-2004 as appropriate
and mount vertically or horizontally.

Reverse Acting GRAY units (CSC-2002/2004/2008/
2010/2018) are designed for normally closed damp-

ers with reverse-acting thermostats for cooling and
direct-acting thermostats for heating.

For additional specications of particular models,
see the CSC-2000 Data Sheet.

Horizontal Mount, Knobs Up Only

With 0–10 Molded Plastic Dial

(CSC-2001/2002)

Without

Molded Dial

(CSC-2003

through CSC-

2018)

Horizontal Mount

(Preferred, Knobs Up or Down)

CSC-2000 Series Reset Volume Controllers 2 Installation Guide

Or Vertical Mount