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FLN TRUNK
(SHIELD)
(+)
Figure 2. FLN Wiring.
CAUTION:
Do not ground the shield.
5. Connect the point wiring (see Wiring Diagrams).
6. 540-104 and 540–104C: Install the Autozero
Module and connect the wires to DO6 (Figure 5).
See installation instructions 540-199.
7. Plug the room temperature sensor cable into the
RTS port (Figure 1).
8. Connect the power trunk (Figure 3). DO NOT
apply power to the controller.
POWER TRUNK
C H EGRND WHEN THIRD TER-
Figure 3. Power Trunk Wiring.
As a standard grounding procedure, ensure
that 3"-5" ground wire is connected directly
on the common terminal on the secondary
side of the 24 Vac transformer.
9. Connect the tubing from the air velocity sensor
pickups to the ports on the controller or Autozero
Module (Figure 5). Connect HI to HI and LO to
LO.
The installation is complete.
Siemens Building Technologies, Inc.
+ -
S
(SHIELD)
(-)
(-)
(+)
MINATION IS PRESENT
E GRND
24 V HOT
24 V COMMON
CE Compliance
If CE compliance is required, the Equipment
Controller must be mounted in a grounded metal
enclosure and a ferrite filter must be placed
approximately 1 cm from the end of the cable
being shielded (RTS cableand point wiring for AI3)
(Figure 4).
Place the filter 1-2 cm
1
from the end of the cable
or wiring to be shielded.
Wind the cable tightly
2
twice around the filter.
Close the filter and wrap
3
with a zip tie.
Figure 4. Ferrite filter(s) for CE Compliance.
CONTROLLER
Figure 5. Constant Volume Controller—Electronic
Output with Autozero Module.
Document No. 540-320
Installation Instructions
July 15, 2009
1- 2 cm
AIR VELOCITY
SENSOR PORTS
LO
HI
AUTOZERO
MODULE
LO
HI
AIR VELOCITY
SENSOR PORTS
Page 3 of 6
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