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

Siemens

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Smart Infrastructure

2018-11-30

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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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Siemens

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2018-11-30

1About this document

1.1 Revision history

Revision

Date

Changes

Section

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

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

POS8.4440/109

S55625-H444-A100

Yes

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

Gasket for panel mounting

KNX PL-Link bus connector

Base plate with

●screw holes for all common conduit

boxes

●guide channels for wiring from center,

up, or bottom

Jack connector for tool connection

Room operator unit

2.5 Diagrams

2.5.1 Connection terminals

KNX PL-Link plug

Connector

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

Description

KNX PL-Link (positive)

KNX PL-Link (negative)

2.5.2 Connection diagrams

Operation

The device - room operator unit (POS8.44xx)

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

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