Installation Instructions

Document No. 546-00092
Installation Instructions
August 10, 2011
Page 2 of 6 Siemens Industry, Inc.
Product Numbers
546-00437B
Lab Electronic Actuator -Analog/Floating
Actuator Only, w/o brackets or Interface.
546-00450
LEA Interface board
546-00581
LEA Bracket Kit for 90°
546-00582
LEA Bracket Kit for 45° and 60° rotation
546-00438
Lab Electronic Actuator Assembly -
Analog/Floating control for 90° damper
rotation with interface board mounted in
galvanized steel enclosure.
Contact your Siemens Building Technologies, Inc.
representative for detailed parts information.
Warning/Caution Notations
WARNING:
Personal injury/loss of life may
occur if you do not follow the
procedures as specified.
CAUTION:
Equipment damage or loss of
data may occur if you do not
follow the procedures as
specified.
Expected Installation Times
35 minutes.
Tools
Electric drill with nut driver
Smallflat blade screwdriver
3/8-inch open end wrench
Needle nose pliers
Prerequisites
Controller is installed
Damper is installed
Instructions
The lab electronic actuator assembly can be
configured in the following two ways:
Floating control (digital) applications.
Analog (0 to 10 Vdc, 4 to 20 mA) control
applications.
Installation for each configuration is described below
with a specific wiring diagram.
Section 1 – Terminal Units
Mounting
1. If the Electronic Actuator Assembly has already
been manufacturer installed on the Terminal
Unit or this is a Venturi Air Valve installation,
skip to Section 3– Floating Control (Digital)
Applications.
2. Remove the cover on the enclosure.
3. Mount the enclosure on the terminal unit so that
the damper shaft extends through the actuator
bracket and can be secured onto the linkage.
4. Secure the enclosure to the terminal unit with
self-tapping screws and using an electric drill
with nut driver.
CAUTION:
When hanging the enclosure, it is
recommended that you use the enclosure
mounting holes as a template for marking
the holes on the mounting surface. The
metal shavings from drilling new holes in
the enclosure can cause severe damage to
the LEA Interface Board.
5. For supply boxes: Verify that the linkage is
connected for FULL CLOSED with actuator
retracted (or as specified by the job) and linked
for45°, 60° or 90° rotation that matches the
damper rotation.
6. For fume hood and general exhaust boxes:
Verify that the linkage is connected for FULL
OPEN with actuator retracted (or as specified
by the job) and linked for 45°, 60° or 90°
rotation that matches the damper rotation.
NOTE:
You may require additional time for
database work at the field panel. Verify that
the damper blade does not contact any
damper stops at both FULL OPEN and
FULL CLOSED.
7. To change the 45°/60° rotation, remove the hitch
pin from the clevis pin on the crank arm
assembly. Remove the clevis pin and reconnect
to the required position in the crank arm (Figure
4). Tighten the crank arm bolt with the open-end
wrench.
Figure 4. 45° / 60 ° Crank Arm position.