Siemens POS8.4420/109 User manual

A6V11519429_en--_b

2020-10-14

Room operating unit

POS8.4420/109; POS8.4440/109

Communicative room operating units with KNX PL-Link.

●Measurement of the room temperature (POS8.4420/109)

●Measurement of the room temperature and humidity (POS8.4440/109)

●Keys for adjustment of the room temperature setpoint, ventilation, domestic hot

water, time scheduler settings depending on the controller application

●LCD display of room temperature, operating modes, humidity (only for

POS8.4440/109), time scheduler, notification, and clock setting

●Operation with 8 push buttons

●2-wire interface to the controller through KNX PL-Link

●Power supply of the room operating unit over KNX PL-Link

●LCD display with backlight

Siemens

A6V11519429_en--_b

Building Technologies

2020-10-14

Use

●Measure and indicate the room temperature with POS8.4420/109

●Measure and indicate the room temperature and humidity with POS8.4440/109

●Switch among different operating modes: Home mode, Away mode and Temporary

mode

●Select among different HVAC modes: Comfort, Economy, Unoccupied and Protection

Application

The device communicates with a controller using a KNX PL-Link bus to access the

controller's preinstalled application:

●Heat recovery ventilation application

Functions

Elements

Functions

/ /

Home mode / Away mode / Temporary mode

Temporary mode: Ventilation boost / Fire place

/ / /

HVAC Mode: Comfort / Economy / Unoccupied / Protection

Auto / Manual

Manual

Ventilation page

Temperature page

Domestic hot water page

Notification page

Clock page

General page / Expert page

Indicates an operable element

Wait

Start

List

Alarm (A-alarm) notification abnormal and unacknowledged

Alarm(A-alarm) notification normal and unacknowledged

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2020-10-14

Elements

Functions

Alarm (A-alarm) notification abnormal and acknowledged

Alarm (A-alarm) notification normal and acknowledged

Service (B-alarm) notification abnormal and unacknowledged

Service (B-alarm) notification normal and unacknowledged

Service (B-alarm) notification abnormal and acknowledged

Acknowledge all notifications

Reset

Confirm

Cancel

Go back

Exit / next

+ / -

Increase / decrease

Add a switch point

Edit

Delete

1 2 3 4 5 6 7

1=Monday, 2=Tuesday, …, 6=Saturday, 7=Sunday

Time

Switch point

Time scheduler bar

Read parameter mode

Outside temperature

Room temperature

Auxiliary input for comfort mode

Auxiliary input for economy mode

Auxiliary input for unoccupied mode

Auxiliary input for protection mode

Auxiliary input for ventilation boost mode

Auxiliary input for fire place mode

Auxiliary input for kitchen hood mode

Siemens

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Building Technologies

2020-10-14

Mechanical design

Frame for panel mounting

KNX PL-Link bus connector

Base plate with

●Screw holes for all common conduit boxes in

regions such as EU, UK, and so on.

●Guide channels for wiring from center, up, or

bottom

Jack connector for tool connection

Room operating unit

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

Equipment combinations

Type

Type no.

Document ID

Description

Controller

POS3.5715/100

A6V11417931

For HVAC controlling,

switching and monitoring

functions

Product documentation

Topic

Title

Document ID:

Installation, cable length, topology

Mounting instructions

A6V10733764

Engineering, commissioning, and operation

Basic documentation

A6V11471220

CE declaration

A6V11210253

Product environmental declaration

Product environmental

declaration

A6V10733777

All documentation listed in the above table can be downloaded from:

http://siemens.com/bt/download.

Notes

Security

Siemens

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Building Technologies

2020-10-14

CAUTION

National safety regulations

Failure to comply with national safety regulations may result in personal injury and property

damage.

●Observe national provisions and comply with the appropriate safety regulations.

Engineering

●The device offers plug and play functionality.

●The device receives their power from the connected controller via the KNX PL-Link

interface or from the jack connector.

NOTICE

De-energize the controller before wiring the device.

Mounting

●The devices are suitable for wall mounting and panel mounting.

●Recommended height: 1.50 m above the floor.

●Do not mount the devices in recesses, shelves, behind curtains or doors, or above or

near heat sources.

●Avoid direct solar radiation and drafts.

●Seal the conduit box or the installation tube if any, as air currents can affect sensor

readings.

●Adhere to allowed ambient conditions.

For more information about mounting, see the

Mounting instructions A6V10733764

Installation

Siemens

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Building Technologies

2020-10-14

CAUTION

The devices are not protected against accidental connection to AC 230 V.

●Use the correct cables for the KNX PL-Link bus.

●Do not interchange the wires of the KNX PL-Link cable.

●Observe all local installation regulations.

Commissioning

The device gets applications from its connected controller by automatic commissioning.

When it is powered up using the KNX bus for the first time, it performs the commissioning

procedure automatically.

Operation

The operation of the device is defined by the application loaded in the connected controller.

Operating mode:

●Auto mode

–The device always works as defined in the application.

–Users can change settings temporarily, such as heating temperature or the domestic

hot water setpoint.

●Manual mode

–Users can change operating settings, such as operating mode, heating and domestic

hot water setpoint, HVAC mode, etc.

●Temporary function

–There are two temporary modes: fan boost and fire place. When temporary mode

times out, the device returns to its previous mode. Tap button 1 during the temporary

mode running time terminates the temporary mode and the device returns to the auto

mode.

Parameter settings

The behavior of the device can be configured by setting parameters. Long press button 8 to

enter the standard page to adjust settings for P01 to P05 and long press button 6 and 8 to

enter the expert page to adjust settings for P01 to P05 and P51.

More information about parameter descriptions, see the

Basic documentation

(A6V11471220).

Time scheduler settings

Users can use the time scheduler to adjust the settings for HVAC modes. For example,

users can set the device to run under Comfort mode from 9:00 to 17:00 and Economy mode

from 17:00 to 19:00. Long press button 2 to enter the time scheduler settings page.

Maintenance

The device can be cleaned with off-the shelf, solvent-free cleaning agents.

Do not use mechanical aids (rough sponge or similar materials) –only a soft, damp cloth.

Disposal

The device is considered an electronic device for disposal in accordance

with the European Guidelines and may not be disposed of as domestic

garbage.

●Dispose of the device through channels provided for this purpose.

●Comply with all local and currently applicable laws and regulations.

Siemens

A6V11519429_en--_b

Building Technologies

2020-10-14

Warranty

Technical data on specific applications are valid only together with Siemens products listed

under "Equipment combinations". Siemens rejects any and all warranties in the event that

third-party products are used.

Siemens

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Building Technologies

2020-10-14

Technical data

Power supply

Operating voltage

KNX PL-Link DC 21...30 V

Max power consumption

7...10 mA

Interfaces

Type of port between controller and room operating unit

KNX PL-Link

Baud rate

9.6 kbps

Protocol

KNX PL-LINK

Standard KNX connector

Wire diameter 0.8 mm, max. 1.0 mm (solid conductors

only)

Cable type

2-core twisted pair, stranded, solid

Single cable length (from room automation station to

room operating unit)

<1000 m

Section

0.5…1.5 mm²

Bus line polarity

PL+, PL-

Bus terminating resister

not required

Sensor data

Temperature Sensor

Measuring element

NTC resistance sensor

Measuring range

0...50 °C

Measuring accuracy (5...30 °C)

±0.8 °C

Measuring accuracy (25 °C)

±0.5 °C

Ambient conditions and protection classification

Housing Protection

Protection standard as per EN 60529

●IP30

●IP33 for surface part

Insulation protection class

Class III

Climatic ambient conditions

●Normal operation

●Transport

●Environmental Conditions: Class 3K5

Temperature 0...50 °C

Air humidity <85% r.h.

●Environmental Conditions: Class 2K3

Temperature -25...70 °C

Air humidity <95% r.h.

Mechanical ambient conditions

Normal operation

Transport

Class 3M2

Class 2M2

Standards, directives and approvals

EU conformity (CE)

A6V11210253 *)

RCM conformity to EMC emission standard

A6V11210257 *)

IC Compliance

CAN ICE-3(B)/NMB-3(B)

UL Compliance

UL916

FCC Compliance

Part 15 of the FCC rules. Operation is subject to the

following two conditions: 1) this device may not cause

harmful interference, and 2) this device must accept any

interference received, including interference that may

cause undesired operation.

Environmental compatibility

The product environmental declaration

(A6V10733777 *) contains data on environmentally

compatible product design and assessments (RoHS

compliance, materials composition, packaging,

Siemens

A6V11519429_en--_b

Building Technologies

2020-10-14

Standards, directives and approvals

environmental benefit, disposal).

*) Documents can be downloaded at the following address:

http://siemens.com/bt/download

NOTICE

This equipment has been tested and found to comply with the limits for a Class B digital

device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide

reasonable protection against harmful interference in a residential installation. This

equipment generates, uses and can radiate radio frequency energy and, if not installed and

used in accordance with the instructions, may cause harmful interference to radio

communications. However, there is no guarantee that interference will not occur in a

particular installation. If this equipment does cause harmful interference to radio or

television reception, which can be determined by turning the device off and on, the user is

encouraged to try to correct the interference by one or more of the following measures:

●Reorient or relocate the receiving antenna.

●Increase the separation between the equipment and receiver.

●Connect the equipment into an outlet on a circuit different from that to which the

receiver is connected.

●Consult the dealer or an experienced radio/TV technician for help.

General data (POS8.4420/109)

Color

Signal white (RAL9003)

Weight

145 g

General data (POS8.4440/109)

Color

Signal white (RAL9003)

Weight

146 g

Siemens

A6V11519429_en--_b

Building Technologies

2020-10-14

Diagrams

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.

NOTICE

Wires are NOT interchangeable!

The device is protected against faulty wiring, but communications does not work on

interchanged wires. The KNX / KNX PL-Link bus MUST NOT be connected to the tool plug,

only the tool.

Tool plug

Connector

Description

KNX PL-Link (positive)

KNX PL-Link (negative)

Connection diagrams

Operation

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