Operation by the heating engineer ..............14 Activating the service and parameter setting level ........14 Settings......................14 Leaving the service and parameter setting level ........... 15 3/20 Siemens Building Technologies Room Unit QAA70 CE1P1638E Landis & Staefa Division Contents 17.04.2000...
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Example of plant ....................16 Technical data....................17 Dimensions ....................18 4/20 Siemens Building Technologies Room Unit QAA70 CE1P1638E Landis & Staefa Division Contents 17.04.2000...
1.4 Field of use 1.4.1 Target market The QAA70 room unit has been designed for the OEM market. It is delivered directly to the boiler manufacturer and is conceived to enhance the functions and the operation of boiler temperature controllers.
Handling 2.1 Engineering and mounting • The QAA70 room unit should be mounted in the main living room • The unit should be sited such that its sensor can acquire the room temperature as accurately as possible. This means that it should not be exposed direct solar radia- tion nor should it be affected by heat or refrigeration sources •...
Controller N1 with QAA70 room unit and remote sensor (room unit terminals D3 / D4) Example 3 QAA70 Controller N1 with QAA70 room unit and remote telephone switch (room unit terminals D3 / D4) Note PPS connections between controller and room unit are interchangeable.
3 Units (°C) 4 Display presence button 5 Outside temperature 6 Room temperature 7 Holiday function 8 Operating mode 9 Line number / current day 10 D.h.w. temperature 8/20 Siemens Building Technologies Room Unit QAA70 CE1P1638E Landis & Staefa Division Handling 17.04.2000...
Outside temperature * * This display appears only if the respective sensor is connected Note The room unit continues to operate independent of the selected display. 9/20 Siemens Building Technologies Room Unit QAA70 CE1P1638E Landis & Staefa Division Handling 17.04.2000...
Note: In manual operation , the selection made acts continuously, in automatic mode only until the next switching action according to the heating program takes place. 10/20 Siemens Building Technologies Room Unit QAA70 CE1P1638E Landis & Staefa Division Handling 17.04.2000...
Parameter settings for the end-user 3.1 General To set the parameters of the QAA70, the unit cover must be open! Line number Value As soon as the cover is opened, the display and the button func- tion will change. Then, the framed...
3.5 Actual values Display of the actual d.h.w. temperature Display of the actual boiler temperature Display of the actual flow temperature 12/20 Siemens Building Technologies Room Unit QAA70 CE1P1638E Landis & Staefa Division Parameter settings for the end-user 17.04.2000...
Room unit is in the initialization phase (rotating circle) Operation by the heating engineer The QAA70 room unit has a service and parameter setting level to give the heating engineer additional setting choices. This level can only be activated by pressing a cer- tain combination of buttons.
4.3 Leaving the service and parameter setting level When closing the unit cover, the service and parameter level will be quit and the set- tings made stored. 15/20 Siemens Building Technologies Room Unit QAA70 CE1P1638E Landis & Staefa Division Operation by the heating engineer 17.04.2000...
Example of plant 1638S01 Boiler temperature sensor D.h.w. temperature sensor Room unit QAA70 Outside sensor Burner Heating circuit pump D.h.w. charging pump Controller 16/20 Siemens Building Technologies Room Unit QAA70 CE1P1638E Landis & Staefa Division Example of plant 17.04.2000...
Room temperature measurement range 0...32 °C Setting ranges: Nominal temperature 5...30 °C Reduced temperature 5...30 °C Temperature readjustment range ±3 °C Resolution 0.5 °C Ordering multiple 20 pieces 17/20 Siemens Building Technologies Room Unit QAA70 CE1P1638E Landis & Staefa Division Technical data 17.04.2000...
Dimensions QAA70 room unit 2273M01 QAW44 remote tempera- ture sensor 18/20 Siemens Building Technologies Room Unit QAA70 CE1P1638E Landis & Staefa Division Dimensions 17.04.2000...
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............14 heating engineer additional setting choices ....14 heating program............12 technical data ............17 holiday function ............13 temperature readjustments ........10 time of day..............12 19/20 Siemens Building Technologies Room Unit QAA70 CE1P1638E Landis & Staefa Division Index 17.04.2000...