Carnes ARRE Installation Manual

READ AND SAVE THESE INSTRUCTIONS

INSTALLATION and OPERATION MANUAL

VAV RETROFIT

Models ARRE and ARSB

HIGH and LOW VELOCITY UNITS

COPYRIGHT © 2010

All Rights Reserved

18641-F

SUPERSEDES 18641-E

Model ARRE

Model ARSB

CARNES COMPANY 448 S. Main St., P. O. Box 930040, Verona, WI 53593-0040 Phone: [phone] Fax: [phone] www.carnes.com

INSPECT UNIT

UNPACKING AND INSPECTION

1. Open shipping carton and check for concealed

ship-ing damage. Report damage immediately to the
carrier that delivered the shipment.

2. Inspect the unit for loose or missing components.

3. Optional accessories may be packed within the unit or

in the same shipping carton

INSTALLATION

GENERAL

1. Each VAV unit and accessory is shipped with an

identification label showing the Carnes order number,
unit item number from the order, unit model number,
maximum and minimum CFM Setting on terminal units
with pressure independent control options, and unit
tagging (or mark).

MODEL ARRE

MOUNTING THE ARRE TERMINAL UNIT
(Round-to-Round)

1. The diameter of the inlet duct in inches must be equal

to the listed size of the ARRE Terminal Unit, e.g., a
duct diameter that measures six (6) inches must be
fitted to a unit Size 06.

2. The control unit must be mounted such that the
velocity sensor is at the inlet of the terminal unit,
upstream of the damper blade.

3. It is preferred that the installer attempt to obtain a
minimum of three (3) inlet diameters of straight duct
ahead of the terminal unit inlet to achieve optimum
control accuracy. (Figure 1)

NOTE: Close coupling the terminal unit inlet to the side of

the main duct is not recommended. (Figure 2)

4. Remove the section of duct equal to the length of the
ARRE terminal unit as specified in the Dimensional
Data plus

1/4” for working room. (Figure 3)

5. Facing the ARRE Terminal Unit inlet, mount the
terminal unit in a horizontal level position.

6. Insert the inlet of the ARRE Terminal Unit into the
upstream duct and secure the outlet end to the
downstream duct with a collar (field supplied) or, in the
case of flex duct, with tie bands and duct tape
provided by others, or as prescribed by the job
specifications. (Figure 4).

Figure 2

Figure 3

Figure 4

Figure 1

MAIN DUCT

SUPPLY

3D

MIN

D

STRAIGHT DUCT UPSTREAM

FORM 18641-F, Page 2

CLOSE COUPLING NOT RECOMMENDED

CARNES COMPANY, VERONA, WISCONSIN

ORDER ITEM

MODEL
MAX. CFM / MIN. CFM
MARK