Siemens QSA2700D Operator's manual

QSA2700D / QSA2700 / AQS2700

Fine Dust Room Sensor

Basic Documentation

A6V11160936_en--_a

Building Technologies

2017-12-01 Building Technologies

Siemens

A6V11160936_en

2017

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Table of Contents

1About this document............................................................................. 3

2Product overview ................................................................................. 5

3Installation........................................................................................... 8

4Configurations ....................................................................................12

5Technical data ....................................................................................17

6 Maintenance.......................................................................................19

7 Air Quality Index classes......................................................................22

8Standard compliance...........................................................................23

9Appendices ........................................................................................24

About this document

Revision history

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1About this document

1.1 Revision history

Edition Date Changes Section Pages

1August. 2017 First version. All

1.2 Reference documents

Ref. Document title Document number

1Mounting instructions A6V11160930

2 Datasheet A6V11160938

You can download the above documents at http://siemens.com/bt/download:

Simply search by document numbers.

1.3 Before you start

This document may be duplicated and distributed only with the expressed

permission of Siemens Ltd.

These documents were prepared with great care.

●The content of all documents is 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 your local point of contact (POC) at the nearest

branch office. Addresses for Siemens RCs are available at www.siemens.com/sbt.

Markups

Special markups are indicated in the document as follows:

●Numbered lists and instructions with an operation sequence

Procedures must be performed in the specified order.

[➙ X] Reference to a page number

Symbol identifications

WARNING

This is the symbol for hazard. It warns you of

Risks of injury.

Comply with all

measures designated by this symbol to prevent injury or death.

Quality assurance

Conventions for text

marking

About this document

Before you start

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NOTICE

This symbol

identifies an important notice that you should be aware of when you

are using the product.

Before using products from Siemens Industry, Inc., it is important that you read the

documents supplied with or ordered at the same time as the products (equipment,

applications, tools, and so on) carefully and in full.

Before you get started, make sure you have an internet connection, a valid Email

address and a smartphone in hand.

Additional information on products and applications is available:

●From your Siemens branch office www.siemens.com/sbt or at your system

suppliers.

●From the support team at headquarters fieldsupport-zug.ch.sbt@siemens.com

if no local POC 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.

Document use/ request to

the reader

Product overview

Type summary

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2Product overview

The fine dust room sensor is designed to measure and transmit indoor

concentrations of PM2.5 and PM10. This wall-mounted product has variants with or

without displays and can connect directly to Siemens BT controllers as well as

many third party controllers via voltage output or Modbus.

2.1 Type summary

Type Order number Description Display

QSA2700 S55720-S457 Room sensor for detection

of PM2.5 and PM10

3-color LED service indication

QSA2700D S55720-S458 Room sensor with LCD

display for detection of

PM2.5 and PM10

2.4-inch color LCD screen for

PM2.5 values, Air Quality Index,

and service

AQS2700 S55720-S459 Sensor module for

replacement

2.2 Contents of QSA2700D and QSA2700

Items Quantity

Fine dust sensor 1

Plastic mounting plate 1

Screws 2 pcs

Mounting instructions 1

2.3 Features

The fine dust room sensor is designed to measure and transmit indoor

concentrations of PM2.5 and PM10.

●0…10 V and Modbus output

●Configurable Modbus parameters

●Plug&play configuration for Siemens ClimatixTM controller

●QSA2700:

– 3-color LED indication for service needs

●QSA2700D:

– 2.4-inch color LCD screen for PM2.5 values and AQI indication

–Energy efficient mode: The screen is off if no one is in front of the sensor

(within 1 m for several minutes)

–Micro USB DC 5V for display

–4 selectable languages: English, Chinese (default), German, French

–3 selectable Air Quality Index classes

Product overview

Device overview

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2.4 Device overview

1Hole for wiring (top) for surface mounting

2 [QSA2700 only]LED

3 [QSA2700D only]LCD display

4(power supply for display only)

5 [QSA2700D only]Proximity sensor

6Push button

7Hole for wiring (bottom) for surface mounting

8Hole for attaching the mounting plate to the housing

9Air outlet

10 Air inlet

Product overview

Normal display overview of QSA2700D

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2.5 Normal display overview of QSA2700D

1Current Air Quality Index (refer to Air Quality Index classes [➙22] for more information)

2Text on the current Air Quality Index

Installation

Mounting requirements

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3Installation

3.1 Mounting requirements

●The sensor is suitable for conduit box mounting, dry wall mounting (with

mounting hole for wires concealed) and surface mounting.

●The recommended height is 1.2-1.5 m above the floor, especially for type with

display.

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

above heat sources.

●Avoid direct solar radiation.

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

sensor readings.

●Make sure ambient conditions are within 0…50 °C and 5...95% r.h. (no

condensation).

●Do not mount device in places full of oil smog, e.g. in a kitchen.

●Peel off the protective film on air inlet and air outlet before using the device.

●The air inlet and outlet must be free of any blockage, particularly the floc type

of dirt.

NOTICE

High concentrations of cigarette/oil smog in, for example, smoking rooms, may

affect the optical components inside the sensors. We highly recommend replacing

the sensor module at the latest annually in such environments.

NOTICE

Ultrasonic humidifiers can create fine dust from unpurified water that can distort

sensor readings. Do not use in spaces with PM2.5 controlled ventilation.

Mounting position

Installation

Wiring

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●Wire stripper

●Screw driver

●Pencil, level & drill (for dry wall mounting and surface mounting only)

Wires for Specifications

Power supply 0.4 to 1.5 mm2

Analog output 0.4 to 1.5 mm2

Modbus output Twisted pair 0.4 to 1.5 mm2

Length <600m

3.2 Wiring

G, G0: Operating voltage AC 24 V (SELV) / DC13.5…35

U1: Signal output DC 0...10 V for PM2.5 0...500 μg/m3

U2: Signal output DC 0...10 V for PM10 0...500 μg/m3

Gu: Signal ground for U1 & U2

+,-, Ref: Modbus signal

Mounting dimensions

Mounting tools

Wire specification

Installation

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3.3 Installation

1. Separate the housing from the mounting plate using a screw driver.

2. Screw and fix the mounting plate on a conduit box (Conduit box mounting), or

on a wall (Dry wall mounting if there is a mounting hole and the wires are

concealed in the hole; Surface mounting if there is no mounting hole).

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