Summary
1. General warnings ........................................................ 6
1.1. Storage of the documentation ................................. 6
1.2. Safety precautions and installation .......................... 6
2. Product identifi cation ................................................. 6
3. Description and choice of the unit ........................... 7
3.1. Available models ........................................................ 7
3.2. Available versions ....................................................... 7
3.3. Available versions ........................................................ 7
3.4. Description and choice of the unit ........................... 8
4. Description of components........................................ 9
4.1. Cooling circuit.............................................................. 9
4.2. Frame ............................................................................ 9
4.3. Hydraulic components ............................................... 9
4.4. Electrical components ................................................ 9
4.5. Electronic regulation ................................................... 9
5. Accessories ................................................................11
5.1. Electric regulation accessories ................................11
5.2. Electrical accessories ................................................ 11
5.3. General accessories ................................................. 11
6. Technical data ......................................................... 13
6.1. Standard version ° - l size 0500-0550-0600-0650
0700-0800-0900-1000-1250-1400 ............................... 13
6.2. Standard version h size 0500-0550-0600-0650
0700-0800-0900-1000-1250-1400 ............................... 15
6.3. Standard version e size 0500-0550-0600-0650
0700-0800-0900-1000-1250-1400 ............................... 17
7. Operating limits .......................................................... 18
7.1. Operating limits standard version ............................18
7.2. Operating limit version e (condenserless) .............. 18
8. Corrective factor ...................................................... 19
8.1. Heating capacity and input power ........................ 19
8.2. For
∆t different from the rated value ..............19
8.3. Fouling factors ........................................................... 19
8.4. Cooling capacity and input power ........................ 20
8.5. For ∆t different from the rated value ...................... 20
8.6. Fouling factors ........................................................... 20
8.7. Cooling capacity - input power version
E (condenserless) ....................................................... 21
8.8. For ∆t different from the rated value ..............21
8.9. Fouling factors ........................................................... 21
8.10. Heating capacity with desuperheater ................... 22
8.11. For ∆t different from the rated value ..............22
8.12. Fouling factors ........................................................... 22
8.13. Desuperheater pressure drops ................................. 22
8.14. Heating capacity with total recovery .................... 23
8.15. For ∆t different from the rated value ..............23
8.16. Fouling factors ........................................................... 23
8.17. Perdite di carico del recupero totale .....................24
9. Total pressure drops .................................................24
9.1. Evaporator in cooling operation ............................. 24
9.2. Condenser in cooling operation ............................. 24
10. Useful heads ............................................................... 25
11. Minimum/maximum water content in the system . 27
11.1. Minimum/maximum content of system water,
for units without hydronic kit .................................... 27
11.2. Recommended maximum water content .............27
11.3. Expansion tank calibration .......................................27
12. Glycol ..........................................................................28
12.1. How to read the glycol curves ................................28
13. Cooling lines ...............................................................29
14. Sound data ................................................................ 30
14.1. Sound levels of standard nxw version «°» ...............30
14.2. Sound levels of standard silenced version «l»......... 30
15. Safety and check parameter setting ..................... 31
16. Capacity control ....................................................... 32
17. Selection and place of installation ........................ 34
18. Positioning .................................................................. 34
18.1. Minimum technical spaces (mm)............................ 34
19. Dimensional tables .................................................... 35
20. Hydraulic circuit ......................................................... 39
20.1. External hydraulic circuit recommended ............... 39
20.2. System load ............................................................... 39
20.3. Emptying the system ................................................. 39
21. Percentage distribution of weights on supports .. 40
21.1. Percentage distribution of weights on supports
(version ° - size from 0500 to 0750) .......................... 40
21.2. Percentage distribution of weights on supports
(version ° - sizes from 0800 to 1400) ........................41
21.3. Percentage distribution of weights on supports
(version H - sizes from 0500 to 0750) .......................42
21.4. Percentage distribution of weights on supports
(version H - sizes from 0800 to 1400) .......................43
21.5. Percentage distribution of weights on supports
(version L - sizes from 0800 to 1400) ........................ 44
21.6. Percentage distribution of weights on supports
(version L - sizes from 0800 to 1400) ........................ 45
21.7. Percentage distribution of weights on supports
(version HL - sizes from 0500 to 750) ........................ 46
21.8. Percentage distribution of weights on supports
(version HL - sizes from 0800 to 1400) ...................... 47
22. Electrical wirings ........................................................ 48
22.1. Recommended section of electric cables ............ 48
22.2. Connection to the power supply ............................ 50
22.3. Electrical power connection ................................... 50
22.4. Auxiliary connections at the user/installer expense 50
23. Control and fi rst start-up ........................................... 51
23.1. Preparation for commissioning ................................ 51
23.2. First commissioning of the machine ........................ 51
23.3. Season changeover.................................................. 51
24. Operation characteristics.........................................52
24.1. Cooling set point ....................................................... 52
24.2. Heating set point ....................................................... 52
24.3. Compressor start-up delay ....................................... 52
24.4. Circulation pump ...................................................... 52
24.5. Anti-freeze alarm ....................................................... 52
24.6. Water fl ow rate alarm ............................................... 52
25. Regular maintenance ............................................... 52
26. Extraordinary maintenance ..................................... 52
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