Installation Instructions

Document No. 540-1030
Installation Instructions
October 26, 2016
Siemens Industry, Inc. Page 3 of 5
7. Connect the power trunk. DO NOT apply power
to the controller without first consulting the
specialist.
NOTE:
As a standard grounding procedure,
ensure that a ground wire is connected
directly from neutral of the 24Vac
secondary (the side that connects to
the "C" terminal of the TEC) to earth.
8. Connect the tubing from the air velocity sensor
pickups to the ports on the controller. Connect HI to
HI and LO to LO.
The installation is complete.
Wiring Diagram
CAUTION
The controller’s DOs control 24
Vac loads only. The maximum
rating is 12 VA for each DO. An
external interposing relay is
required for any of the following:
• VA requirements higher than the
maximum
• 110 or 220 Vac requirements
• DC power requirements
• Separate transformers used to
power the load.
(for example part number 540-
147, Terminal Equipment
Controller Relay Module)
Wiring Requirements for 4–20 mA Sensors.
NOTE:
If the voltage/current switch is set to
current and a 4 to 20mA sensor is
connected to AI, then special wiring
requirements must be followed.