
Contents
Safety Notices (Please be sure to abide ) ...................................................................1
1. Diagram of the Operating Principle .........................................................................8
2. Operating Principle of the Unit.................................................................................8
3. Nomenclature...........................................................................................................10
4. Installation Example ............................................................................................. 11
5. Main Components ..................................................................................................12
5.1 Indoor unit .......................................................................................................................12
5.2 Outdoor unit ..................................................................................................................13
6. Installation Guideline of Outdoor Unit...................................................................14
6.1 Instruction to installation ................................................................................................14
6.2 Installation of outdoor unit...............................................................................................14
7. Installation of Indoor Unit....................................................................................... 17
7.1 Select installation location of indoor unit ........................................................................17
7.2 Space requirements for installation.................................................................................17
7.3 Outline dimension of indoor unit ...................................................................................18
7.4 Precautions on installation of indoor unit ........................................................................18
7.5 Water volume and pump capacity (with pump)...............................................................19
7.6 Water volume and expansion vessel pressure ...............................................................20
7.7 The method of calculating the charging pressure of expansion vessel ..........................20
7.8 Selection of expansion vessel.........................................................................................21
8. Connection of Pipelines..........................................................................................22
8.1 Connection of outlet pipe for indoor & outdoor unit ........................................................22
8.2 Installation of protective layer on connection pipe .........................................................22
9. Remote Air Temperature Sensor............................................................................24
10. Thermostat.............................................................................................................25
11. 2-Way Valve ............................................................................................................ 25
12. 3-Way Valve............................................................................................................26
13. Other Auxiliary Heat Sources .............................................................................26
14. Gate-controller.......................................................................................................27
15. Charging and Discharging of Refrigerant........................................................... 27
16. Refrigerant Collecting........................................................................................... 28
17. Handling of the Unit .............................................................................................. 28
18. Wring Diagram.......................................................................................................29
18.1 Control Board................................................................................................................29