I2/b3 885 VAV Controller Installation Ftp://ftp.zenex.pl/katalogi/schneider/5_systemy_automatyki_i_bezpieczenstwa_w_budynkach/5_1_andover_continuum/pdf/instrukcje_materialy_techniczne/i2_b3_885_vav_controller_installation_instructions.en I2 B3 Instructions.en

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Attach the controller to the VAV box using the following procedure:
1. Loosen the nuts that attach the mounting U-bolt to the actuator
motor.

i2/b3 885 VAV Controller
Installation
30-3001-848 Rev F
Full programming and installation information can be found
in the following documents:
i2885 i2 Controller Technical Reference 30-3001-861
b3885 b3 and b4920 Technical Reference 30-3001-862

U-bolt clamp with nuts
Manual override button
2. Manually, position the damper blade at its fully closed position.

Mechanical Installation
The 885 is designed for mounting directly to the damper shaft of
a VAV box. The shaft is inserted through the opening in the
actuator and secured using a U-bolt. It is secured via one sheet
metal screw.
Note: The unit requires that the VAV damper shaft be at least
1.5” (38 mm) in length and 1/4”- 5/8” (6-16 mm) in diameter
(1/4”-7/16” (6-11 mm) square) for proper mounting. The unit

3. With the manual override button
depressed, rotate the actuator clamp of
the controller motor to approximately 1/16
- 1/8” between the actuator stop and
clamp, depending on seal design. The
rotation direction to turn depends on the
setting of the rotation direction jumper on
the controller. The default direction to
position the clamp would be counterclockwise (full ‘-‘ position). See the other
side of this sheet for details on the
rotation direction jumper.

Stop

may be mounted in any orientation.
4. Position the unit at the proper perspective on the VAV box.

Overall Dimensions

Carefully insert the shaft of the VAV unit into the opening of the

Note:

actuator motor through the U-bolt. Make sure the controller is flush

This equipment is intended for field installation within the

with the VAV housing. Finger-tighten the nuts to secure the shaft to

enclosure of another product.

the actuator.
5. Insert a #8 self-tapping screw through the mounting slot to secure
the controller to the housing. Position the screw in the center of the
slot. Do not over-tighten. The controller should move freely on this
screw.
#8 Self-tapping screw
secures the unit to
the housing

ODEL
S/N
DATE

Shaft inserted into
the actuator

6. Tighten the U-Bolt to the shaft using an 8 mm wrench.

© 2010 Schneider Electric All Rights Reserved.

Schneider Electric – One High Street – North Andover MA USA 01845

24 VAC Connection

Input Connections

The 885 controller is powered by an external 24 VAC source.
PIN

Function

1
2

Caution: Do not externally ground any input signal or
damage may result.

24 VAC RETURN (Earth GND)
L

Temperature

Voltage
0-5V Max.

24 VAC

IN x

IN x

+
V

Thermistor
-

RET

RET

The ground wire should not exceed 12” in length and it must be
connected to a good earth ground. The screw that connects the
ground wire with earth ground shall have a green colored head that
is hexagonal, slotted or both.

Airflow

Contacts

IN x

Caution: Earth ground ( ) must be
connected to avoid module damage.

Contact
Closure
E
D
O

RET

L

/S N

Powering Multiple Controllers

AD ET

Unless all the controllers you intend to power are resident in the
same cabinet, it is imperative that you use a separate
transformer for each controller.
OU T

IN

Damper Direction Jumper
ODEL
S/N

Output Connections

DATE

Form A

RS-485 Connection

Tri-State



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