Siemens QAA73.110 Manuel utilisateur

CE1Q2282en

04.09.2001

Siemens Building Technologies

HVAC Products

OEM

QAA53.110 QAA73.110

Room Units for

Boiler Temperature

Control

QAA53.110

QAA73.110

OpenTherm interface

Digital, multifunctional room units for enhancing the functionality of boiler

controllers.

With integrated temperature sensor, heating program and a number of control

functions.

Use

Used in combination with a boiler controller or heating controller. Room temperature

control in:

•Single or 2-family houses

•Smaller multifamily houses

•Holiday houses and villas

For use in all standard heating systems, such as radiator or convector heating systems.

Especially suited for heating plants with pump heating circuits. If the boiler control

systems feature integrated mixing valve control, it is also possible to control mixing

heating circuits.

Use

pplication

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HVAC Products 04.09.2001

The room units are designed for the OEM market. They are supplied directly to the

boiler manufacturer and enhance the functionality and the level of control of small gas-

fired appliances with integrated boiler temperature controllers.

Functions

QAA73.110

QAA53.110

•Generation of the flow temperature setpoint x x

•Pure room temperature control x x

•Weather-compensated flow temperature control while giving consideration to

the building’s thermal dynamics

•Weather-compensated flow temperature control with room compensation x

•Effect of room temperature deviation can be adjusted x

•Optimum start / stop control x

•ECO functions (24-hour limit switch, automatic summer / winter changeover) x

•Quick setback x x

•Room temperature switching differential for limiting the room temperature x x

•Adjustable maximum limitation of the flow temperature (especially in

connection with floor heating systems)

•Limitation of the rate of increase of the flow temperature setpoint x

•Frost protection for the building x x

•Frost warning x

•D.h.w. control with release and preselection of setpoint for the boiler controller x

•Legionella function x

•Integrated yearly clock with backup (minimum 12 hours) x

•Integrated 24-hour clock with backup (minimum 12 hours) x

•Operating levels based on ergonomic and functional considerations x x

•Operating mode, setpoint adjustment and occupancy button x x

•Every setting or change is displayed and thus acknowledged x x

•Clear text display in a number of selectable languages x

•7-segment display x

•A number of actual values can be accessed via the Info button x

•Additional functions can be programmed after opening the cover x

•Special service level with protected access x

•Yearly clock with automatic summer- / wintertime changeover x

•One 7-day program per heating circuit and up to 3 switching cycles per day

can be selected on an individual basis

•24-hour heating program with up to 3 switching cycles x

•7-day d.h.w. heating program with up to 3 switching cycles per day can be

selected on an individual basis

•Holiday program x

•The heating programs and the d.h.w. program can be reset to their default

settings

•Programming lock (e.g. for child-proofing) x

•Special mode for setting the parameters of Siemens boiler control systems x

Market

Functions

Operating functions

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HVAC Products 04.09.2001

•Elegant housing made of recyclable plastic x x

•Communication with the boiler control via OpenTherm interface x x

•Power supply via OpenTherm bus x x

•Straightforward installation xx

•Cable entry for wall mounting or mounting on a recessed conduit box xx

Type summary

Type Type reference Compatible with

QAA73.110

QAA53.110

Room unit with OpenTherm

interface

•LMU... with OpenTherm interface

•Other types of boiler controllers with

OpenTherm interface

AVS92.299 Mounting clips for panel

mounting

Technical features

For communication between the room unit and the boiler control, the OpenTherm bus is

used.

The room unit differentiates between 2 OpenTherm modes, Plus and Lite:

•In OpenTherm Plus mode, the room unit can read or write various standardized

objects via the bus

•In OpenTherm Lite mode, the room unit of the boiler control only delivers a signal for

controlling the heat output. In the event of fault, the boiler control sends message

Boiler Lockout Fault to the room unit

Right after the electrical connection, the room unit ascertains whether the boiler

controller supports the OpenTherm Plus or the OpenTherm Lite protocol.

Usually, maximum limitation of the flow temperature is

predefined by the BMU and sent to the room unit via

OpenTherm. If the BMU does not transmit any limitation , it

can be lowered on the room unit from 80 °C (standard setting)

to 60 °C by cutting the oppropriate wire link. This is especially

required when the flow temperatures called for by the heating

circuit are below 60 °C.

The wire link must be cut in a way that the ends of the wires do not touch any more,

that they do not make contact with other conductive surfaces and that parts of the wire

link do not fall inside the unit!

For a more detailed description of the technical design, refer to documentation

CE1P2284.

Other features

Communication

Maximum limitation of

the flow temperature

(only QAA53.110)

Caution

Additional function

descriptions

2282Z02

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Mechanical design

The unit consists of the following components:

•Housing with integrated electronics and operating elements

•Base for wall mounting with the connection terminals

•Button for selecting the operating mode

•Setting knob for adjusting the setpoint

•Occupancy button for temporary changeover

•Info button (QAA73.110)

•Line selection and adjustment of values with buttons behind the housing front

(QAA73.110)

2282Z01

QAA53.110

2284Z03

QAA73.110

Technical data

OpenTherm bus

Connection

Cable length

Cable resistance

Power consumption

2-wire connection (interchangeable)

max. 50 m

max. 2 x 5 Ω

35 mW (typically)

Safety class

Degree of protection of housing

Contamination

III to EN 60730

(when mounted correctly)

IP 20 to EN 60529

environment to EN 60730

Operation

Temperatures

Humidity

Transport

Temperatures

Humidity

Storage

Temperatures

Humidity

IEC 721-3-3 class 3K 5

0...50 °C

< 85 % r.h.

IEC 721-3-2 class 2K 3

-25..0.70 °C

< 95 % r.h.

IEC 721-3-1 class 1K 3

-25..70 °C

< 95 % r.h.

conformity

EMC directive

– Immunity

– Emissions

Low voltage directive

– Electrical safety

89/336/EEC

EN 50082-1, EN 50082-2, EN 60730-1

EN 50090-2

EN 50081-1, EN 50081-2, EN50090-2-2

73/23/EEC

EN 60730-1, EN 60730-2-9

Measuring range 0...45 °C

Backup of time switch

Software class

Weight

min. 12 h

A to EN 60 730

approx. 0.17 kg

Room unit

Operating elements

Display

Operating voltage

Protection

Environmental

conditions

Standards

Room sensor

Other features

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HVAC Products 04.09.2001

Notes

•The products may only be used in building services plant and applications as

described above

•When using the products, all requirements specified under “Technical data” must be

observed

•The local regulations for electrical installation must be complied with

•In the main living room or reference room

•The place of installation should be chosen so that the sensor can capture the room

temperature as accurately as possible, without being affected by direct solar radiation

or other heating or cooling sources.

•Mounting height is about 1.5 meters above the floor

•The unit can be fitted to most commercially available recessed conduit boxes or

directly on the wall.

•Wall mounting

2284Z33a

2284Z34a

2284Z35a

•Boiler control panel, securing with mounting clips (only QAA73.110).

When using flush panel mounting, the effect of room temperature deviations must be

deactivated

2284Z37

2284Z35a

2284Z15

2284Z38

•The controller may not be exposed to dripping water

•Permissible ambient temperature: 0..0.50 °C

•The local regulations for electrical installations must be complied with.

Product liability

Engineering

installation

Installation

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Connection diagram

COA

COB

OpenTherm terminal A (interchangeable)

OpenTherm terminal B (interchangeable)

562

2284Z40

23 mA max

QAA73 and QAA53 with

Dimensions

2284M02

1...2.5

+0.8

-0

92 +0.8

-0

2284M01

Room unit

Panel cutout

ãSiemens Building Technologies Ltd.

Subject to alteration

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