Mounting on a vav terminal box – KMC Controls BAC-8007 Installation Guide User Manual

Page 17

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background image

Mounting on a VAV
terminal box

Mount the controller inside of a metal enclosure. To maintain RF emissions
specifications, use either shielded connecting cables or enclose all cables in
conduit.

Mount the controller directly over the damper shaft. A minimum shaft length
of 2.0 inch (51 mm) is required.

Note:

SimplyVAV controllers are designed to directly mount to 3/8 to 5/8 inch
(9.5 to 16 mm) round or 3/8 to 7/16 inch (9.5 to 11 mm) square damper shafts.

Illustration 2–2 Controls and indicators

ON CTS

1 2

COMM
READY

AI1

AI5

GND

AO4

AO3

SC

BO8

BO5

BO6

SC

BO7

24VAC

AI6

GND

AI7

T

-S
T

A

T

/

SEN

SO

R

-A

+B

S

EO

L

BACnet MS/TP

Status LEDs

Mounting

tab

Mounting
bushing

Gear clutch button

Drive hub
and V-bolt

Mount the controller as follows:

1. Manually rotate the damper on the VAV box to the fully open position.

2. On the controller, press the gear clutch button and rotate the drive hub

in the same direction that opened the damper. Turn the hub until it
reaches a rotation limit.

3. Loosen the nuts on the V-bolt until the damper shaft can fit through the

collar.

4. Place the controller over the damper shaft.

5. Finger tighten the nuts on the V-bolt to position the shaft in the drive

hub.

6. Center the mounting bushing in the mounting tab and fasten it with a #8

sheet metal screw.

7. Evenly tighten the V-bolt nuts on the drive hub to 30-35 in-lbs.

SimplyVAV

Section 2: Installing the controllers

Revision E

17

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