1 Product Data............................................................................................................................................ 6

1.1 Lineup............................................................................................................................................ 6

1.2 Nomenclature ................................................................................................................................ 7

1.3 Product Features........................................................................................................................... 8

1.4 Operating Principle ..................................................................................................................... 10

1.5 Technical Data ............................................................................................................................ 11

2 Outline Dimensions ............................................................................................................................... 16

3 Explosive Views and Part Lists ............................................................................................................. 17

4 Supply Scope ........................................................................................................................................ 21

DESIGN & SELECTION .......................................................................................................................... 22

1 Installation Example .............................................................................................................................. 23

2 Model Selection ..................................................................................................................................... 24

2.1 Speculations of Power Supply .................................................................................................... 24

2.2 Operation Conditions .................................................................................................................. 25

2.3 Flowchart of Model Selection ...................................................................................................... 25

2.4 Design Principle .......................................................................................................................... 25

3 Selection of the Underfloor Coils........................................................................................................... 25

3.1 Calculation of Unit Load for Floor Heating .................................................................................. 25

3.2 Selection of Tube Spacing of the Underfloor Coils ..................................................................... 26

3.3 Selection of Loop Quantity of Coils for Each Room ................................................................... 26

4 Quantity and Location of the Water Traps and Collectors .................................................................... 27

4.1 Design Requirements on Loop Quantity for Circulation Water .................................................. 27

4.2 Requirements on Installation of the Water Trap (Collector) ....................................................... 29

5 Section of FCU ...................................................................................................................................... 29

5.1 FCU Type Selection .................................................................................................................... 29

5.2 Matching of Capacity .................................................................................................................. 29

6 Selection of the Water Tank .................................................................................................................. 30

6.1 Specifications of the Water Tank ................................................................................................ 30

6.2 Volume Selection of the Water Tank .......................................................................................... 30

7 Examples for Model Selection ............................................................................................................... 31

7.1 General Introduction to the Example Project .............................................................................. 31

7.2 Heat Load Calculation ................................................................................................................. 31

7.3 Model Selection........................................................................................................................... 32

UNIT CONTROL ...................................................................................................................................... 33

1 Integral Control Concept ....................................................................................................................... 34

1.1 Control Principle Diagram ........................................................................................................... 34

1.2 Control Flowchart ........................................................................................................................ 37

2 Main Control Logics ............................................................................................................................... 37

2.1 Cooling ........................................................................................................................................ 37

2.2 Heating ........................................................................................................................................ 38

2.3 Water Heating ............................................................................................................................. 38

2.4 Shutdown .................................................................................................................................... 39

2.5 Control to the Compressor .......................................................................................................... 39

Contents