Siemens POS8.4420/109 User manual

POS8.4420/109; POS8.4440/109
Room operator units
Basic Documentation
A6V11471220_en--_a
2018-11-30
Smart Infrastructure

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Table of Contents
1 About this document....................................................................................3
1.1 Revision history ...............................................................................................3
1.2 Before you start ...............................................................................................3
1.3 Reference documents .....................................................................................4
2 Product overview.........................................................................................5
2.1 Type summary.................................................................................................5
2.2 Features ..........................................................................................................5
2.3 System topology..............................................................................................6
2.4 Mechanical design...........................................................................................7
2.5 Diagrams .........................................................................................................7
2.6 Dimensions......................................................................................................9
3 Important information on safety and disposal .............................................10
3.1 General regulations .......................................................................................10
3.2 Device-specific regulations............................................................................10
3.3 Notes on EMC optimization...........................................................................10
3.4 Disposal.........................................................................................................11
4 Mounting and installation ...........................................................................12
4.1 Preparation....................................................................................................12
4.2 Mounting instructions ....................................................................................13
5 Commissioning..........................................................................................15
5.1 Programming pin and service LED ...............................................................15
6 Technical data ...........................................................................................17
7 Functions...................................................................................................19
8 Operation ..................................................................................................21
8.1 Ventilation page.............................................................................................21
8.2 Temperature page.........................................................................................22
8.3 Domestic hot water page...............................................................................23
8.4 Notification page............................................................................................24
8.5 Clock page ....................................................................................................28
8.6 Scheduler settings.........................................................................................28
8.7 Standard and expert settings ........................................................................29
8.8 Standby page ................................................................................................30
9 Appendix ...................................................................................................31
9.1 Parameters....................................................................................................31

About this document
Revision history
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1About this document
1.1 Revision history
Revision
Date
Changes
Section
a
November, 2018
First edition
All
1.2 Before you start
The table below lists the third-party trademarks used in this document and their
legal owners. The use of trademarks is subject to international and domestic
provisions of the law.
Trademarks
Legal owner
KNX®
KNX Association, B - 1831 Brussels-Diegem Belgium
http://www.knx.org/
All product names listed in the table are registered (®) or not registered (™)
trademarks of the owner listed in the table. We forgo the labeling (e.g. using the
symbols ® and ™) of trademarks for the purposes of legibility based on the
reference in this section.
This document may be duplicated and distributed only with the express permission
of Siemens, and may be passed on only to authorized persons or companies with
the required technical knowledge.
These documents were prepared with great care.
●The contents of all documents are checked at regular intervals.
●All necessary corrections are included in subsequent versions.
●Documents are automatically amended as a consequence of modifications and
corrections to the products described.
Please make sure that you are aware of the latest document revision date.
If you find any lack of clarity while using this document, or if you have any criticisms
or suggestions, please contact the nearest branch office. Addresses for Siemens
regional companies are available at www.siemens.com/sbt.
Before using our products, it is important that you read the documents supplied
with or ordered at the same time as the products (equipment, applications, tools
etc.) carefully and in full.
We assume that persons using our products and documents are authorized and
properly trained and have the requisite technical knowledge to use our products as
intended.
Additional information on products and applications is available:
●On the intranet (for Siemens employees only) at
https://workspace.sbt.siemens.com/content/00001123/default.aspx
●At your next Siemens branch office www.siemens.com/sbt or at your system
suppliers.
●From the support team in the headquarters fieldsupport-
[email protected]om if no local contact is available.
Siemens assumes no liability to the extent allowed under the law for any losses
resulting from a failure to comply with the aforementioned points or for the
improper compliance of the same.
Trademarks
Copyright
Quality assurance
Document use/ request to
the reader

About this document
Reference documents
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1.3 Reference documents
Ref.
Document title
Document number
[1]
Data sheet
A6V11519429
[2]
Mounting instructions
A6V10733764

Product overview
Type summary
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2Product overview
2.1 Type summary
Product number
Stock number
Feature
LCD display
with
backlight
Minimal
order
size
Temperature
sensor
Humidity sensor
POS8.4420/109
S55625-H422-A100
Yes
No
Yes
20
POS8.4440/109
S55625-H444-A100
Yes
Yes
Yes
20
2.1.1 Equipment combinations
Type
Type no.
Document ID
Description
Controller
POS3.5715/100
A6V11417931
For HVAC control,
switching and monitoring
functions
Controller
POS3.3515/100
A6V11417931
For HVAC control,
switching and monitoring
functions
2.2 Features
●Measurement of room temperature (POS8.4420/109)
●Measurement of room temperature and humidity (POS8.4440/109)
●Keys to adjust the room temperature setpoint, ventilation, domestic hot water,
scheduler settings depending on the controller application
●LCD display of room temperature, operating modes, humidity (only for
POS8.4440/109), scheduler, notification, and clock setting
●Operation with 8 pushbuttons
●2-wire interface to the controller through KNX PL-Link
●Power supply of the room operator unit over KNX PL-Link
●LCD display with backlight

Product overview
System topology
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2.3 System topology

Product overview
Mechanical design
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2.4 Mechanical design
1
Gasket for panel mounting
4
KNX PL-Link bus connector
2
Base plate with
●screw holes for all common conduit
boxes
●guide channels for wiring from center,
up, or bottom
5
Jack connector for tool connection
3
Room operator unit
2.5 Diagrams
2.5.1 Connection terminals
KNX PL-Link plug
Connector
Pin
Description
+
KNX PL-Link (positive)
-
KNX PL-Link (negative)
To find the location of the KNX PL-Link plug, refer to Mechanical design
NOTICE! Users can choose either pair of the pins to connect.

Product overview
Diagrams
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NOTICE
Wires are NOT interchangeable!
The device is protected against faulty wiring, but communication does not work on
interchanged wires. Do not connect the KNX / KNX PL-Link bus to the tool plug,
only the tool.
Tool plug
Connector
Pin
Description
+
KNX PL-Link (positive)
-
KNX PL-Link (negative)
2.5.2 Connection diagrams
Operation
R1
The device - room operator unit (POS8.44xx)
N1
The controller - room automation station
Twisted pair

Product overview
Dimensions
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2.6 Dimensions
Unit: mm
Figure 1: Dimensions for housing
Figure 2: Dimensions for mounting

Important information on safety and disposal
General regulations
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3Important information on safety and disposal
This section explains general and system-specific regulations for mains and
operating voltages. It includes important information for your safety and the safety
of the entire plant.
3.1 General regulations
Comply with the following general regulations during engineering and execution:
●Electrical and mains power regulations for the given country.
●Other applicable, national regulations.
●Building installation regulations for the given country.
●Regulations of the utility company.
●Diagrams, cable lists, dispositions, specifications, and orders by the customer
or authorized engineering office.
●Third-party regulations, for example, by the general contractor or building
owner.
The electrical safety for building automation and control systems by Siemens is
essentially based on safely separating low voltage from mains voltage.
3.2 Device-specific regulations
Note permissible line lengths and topologies when planning and installing
controllers and field devices featuring KNX bus connection. Make sure the bus
supply complies with the KNX standard.
The device is maintenance free. Only the manufacturer can maintain the device.
3.3 Notes on EMC optimization
When setting up cable ducts, separate strongly interfering cables from susceptible
entities.
●Interfering cables: Motor cables especially from motors supplied by inverters,
energy-supplying cables.
●Susceptible entities: Control cables, low voltage cables, interface cables, LAN
cables, digital and analog signal cables.
●Both types of cables can be in the same cable duct, but in separate
compartments.
●If no three-sided, closed duct with separating wall is available, the interfering
cables must be separated by at least 150 mm from the others or placed in
separate ducts.
●Crossings of strongly interfering cables with possibly susceptible entities must
be at a right angle.
●In rare cases, signal and interfering power cables may be run in parallel,
resulting in a high interference risk.
It is recommended to use unscreened cables. Comply with the manufacturer's
installation recommendations for selecting unscreened cables. In general,
unshielded twisted pair cables have sufficient EMC properties for technical building
applications (including data applications) and do not require coupling to
surrounding earth.
KNX bus supply
Maintenance
Cable ducts
Cable types
Separate cables
Unscreened cables