Install Instructions

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CSC-2000 Series Reset Volume Controllers 1 Installation Guide

Installation Guide

Reset Volume Controllers

CSC-2000 Series

Connections Adjustments

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 appli-

cations. 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 sensi-

tive. See the Mounting section on the next page for

the proper vertical/horizontal orientation for the dif-

ferent 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.

CSC-2000 Series Overview

The CSC-2000s are dierential-pressure (∆P), sub-

master 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 nor-

mal 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.

Summary of content (4 pages)

PAGE 1
Reset Volume Controllers CSC-2000 Series Installation Guide CSC-2000 Series Overview The CSC-2000s are differential-pressure (∆P), submaster controllers with adjustable minimum and maximum airflow settings. A master controller, typically a room thermostat, resets the CSC velocity setpoint. 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.
PAGE 2
Specifications Output Sensitivity Mounting 0 to 1" range unit, 5 psig/0.02" wg (35 kPa/5 Pa) As close to the flow 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.) 0 to 2" range units, 5 psig/0.
PAGE 3
Connections Adjustments and Calibration All Units GRAY Controllers (Reverse Acting) For all models of the CSC-2000 Series use 1/4 in. (6 mm) O.D. “FR” tubing for the following connections: 1. Check that there is 0 psi at the “T” Port. 2. Use a flow hood or “tee” a Magnehelic® (or equivalent) differential pressure gauge between the controller and the ∆P pick-up. 1. Connect the main air supply to port “M”. 2. Connect the actuator to port “B”. 3. Connect the thermostat to port “T”. 3.
PAGE 4
BEIGE Controllers (Direct Acting) 5. Recheck the “LO” and the “HI” settings at least twice, verify settings, and fine tune each time if necessary. This procedure will remove internal component tensions and confirm settings. 1. Check that there is 0 psi at the “T” Port. 2. Use a flow hood or “tee” a Magnehelic® (or equivalent) differential pressure gauge between the controller and the ∆P pick-up. 6.