Siemens BACnet PTEC Dual Duct 2 AVS User manual

Installation Instructions
Document No. 550-139
October 26, 2016
BACnet PTEC Dual Duct 2 AVS
Controller
Generic Controller I/O Layout. See Wiring Diagram for application specific details.
Item No. 550-139. Rev. CA Page 1 of 6
Control Applications
6665 through 6669
Product Description
These instructions explain how to field install or
replace a Siemens BACnet PTEC Dual Duct 2 AVS
Controller.
Warning/Caution Notation
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.
Product Numbers
Siemens BACnet PTEC Dual Duct
2 AVS Controller
550-497PA
Shipping carton includes a controller assembly, a
mounting rail, and two self-tapping/drilling screws.

Document No. 550-139
Installation Instructions
October 26, 2016
Page 2 of 6Siemens Industry, Inc.
CAUTION
Keep the unit in its static-proof
bag until installation.
Otherwise, you run the risk of
damage to the printed circuit
board from electrostatic
discharge.
Accessories
Low cost temporary
temperature sensor, 10K
thermistor with RJ11 (1”
long), that enables space
control if the permanent room
or duct sensor is not installed
(pack of 25).
540-658P25
Duct Temperature Sensor,
NTC 10K Ω Type 2, 3" Probe
for Commissioning only
QAM1030.008P50
Expected Installation Time
New controller installation
10 Minutes
Replacement (old controller has
removable terminal blocks)
6 Minutes
Replacement (old controller does
not have removable terminal
blocks)
16 Minutes
NOTE:
You may require additional time for
database work at the field panel.
Required Tools and Equipment
Small flat-blade screwdriver (1/8-inch blade
width)
Cabling and connectors
Cordless drill/driver set
ESD wrist strap
Prerequisites
Wiring conforms to NEC and local codes and
regulations. For further information see the
Wiring Guidelines Manual (125-3002).
Room temperature sensor installed (optional).
24 Vac Class II power available.
Supply power to the unit is OFF.
Any application specific hardware or devices
installed.
Air velocity sensors installed in ducts.
NOTE:
If the controller is being installed on a
box with 1 or more stages of electric
heat, the 550-809 MOV with pre-
terminated spade connectors must be
installed across the manufacturer-
supplied airflow switch. MOVs can be
installed at the time the controller is
factory mounted; coordinate with the
box manufacturer prior to order
placement. For field installation, see
Metal Oxide Varistor Kit Installation
Instructions (540-986).
NOTE:
A low-cost temporary RTS (540-
658P25) is available that plugs into the
RTS port on the controller, providing
temperature input and actual space
control until a permanent RTS is
installed.
Installation Instructions
NOTE:
All wiring must conform to national and
local codes and regulations (NEC, CE,
etc.).
1. Secure the mounting rail in the controller’s
desired location.
2. Place the ESD wrist strap on your wrist and
attach it to a good earth ground.
3. Remove the controller from the static proof bag
and snap it into place on the mounting rail.

Document No. 550-139
Installation Instructions
October 26, 2016
Siemens Industry, Inc. Page 3 of 6
4. Connect the FLN.
5. Connect the point wiring (see Wiring Diagram s).
6. Plug the room temperature sensor cable into the
RTS port.
7. Connect the power trunk. DO NOT apply power
to the controller without first consulting the
specialist. This TEC is designed to work with 2-
wire AC power (Neutral and Phase (hot) at 24
Vac +/-20%. Use of the earth terminal is optional
and if used it should be connected to the nearest
earth ground (building steel, conduit or duct work
(if earthed)).)
CAUTION
It is very important that the
neutral that supplies the TEC
be earth grounded at the source
of the 24 Vac power.
Possible erratic equipment
operation or damage if neutral
is left floating.
The installation is complete.
Wiring Diagrams
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)

Document No. 550-139
Installation Instructions
October 26, 2016
Page 4 of 6Siemens Industry, Inc.
Wiring for AI with a 4 to 20 mA Sensor.
NOTE:
If the voltage/current switch is set to
current and a 4 to 20 mA sensor is
connected to an AI, then special
wiring requirements must be followed.
NOTE:
When wiring any actuator that uses a 0 to
10V control signal and ties AC neutral to DC
common, an additional wire must connect
the actuator AC neutral to the DC common
of the PTEC/TEC AO being used to control
the actuator.
24 Vac Modulating Control.
Actuator
Symbol
TEC
Connection
Function
Terminal
Connection
Standard
Color
1
H
Supply (SP)
G
Red
2
C
Neutral (SN)
G0
Black
8
AO3 –15
(+)
0 to 10V
input signal
Y
Gray
--
C to AO3
16 (-)
Common
jumper
--
--

Document No. 550-139
Installation Instructions
October 26, 2016
Siemens Industry, Inc. Page 5 of 6
Applications 6665, 6666, 6667, and 6668 with Hot
Water Reheat.
Applications 6665, 6666, 6667, and 6668 with Electric
Auxiliary Reheat.

Document No. 550-139
Installation Instructions
October 26, 2016
Information in this document is based on specifications believed correct at the time of publication. The right is reserved to make changes as
design improvements are introduced. Product or company names mentioned herein may be the trademarks of their respective owners. ©
2016 Siemens Industry, Inc.
Siemens Industry, Inc.
Building Technologies Division
1000 Deerfield Parkway
Buffalo Grove, IL 60089-4513
USA
Tel. 1 + 847-215-1000
Your feedback is important to us. If you have
comments about this document, please send them
to [e-mail].
Document No.550-139
Printed in the USA
Page 6 of 6
Application 6669 –Variable Air Volume with
Changeover with Hot Water Reheat.
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