22.05 4037360_01 5
TABLE OF CONTENTS
1. General warnings ...................................................................... p.7
Introduction .............................................................................................p.7
General warnings ...................................................................................p.7
Essential safety rules .............................................................................p.7
Precautions concerning the hydraulic circuit ..............................p.8
Precautions concerning the electrical circuit ...............................p.8
Precautions concerning the cooling circuit .................................. p.8
Preventions ...............................................................................................p.8
Warnings ...................................................................................................p.8
2. Selection criteria of the heat exchangers according to
the place of installation of the unit..................................... p.9
Sea coast environments ....................................................................... p.9
Industrial environments ......................................................................p.9
Mix of seaside and industrial environments ................................p.9
Urban environments .............................................................................p.9
Rural environments ...............................................................................p.9
Additional tips .........................................................................................p.9
3. General description ................................................................ p.10
General safety recommendation ................................................... p.10
Installation requirements ................................................................. p.10
4. Operating limits .......................................................................p.11
Power supply 460V / 575V ............................................................... p.11
Power supply 230V ............................................................................. p.13
Power supply 208V ............................................................................. p.17
5. Refrigerant circuit ...................................................................p.22
NLC 0280-0675 A ................................................................................. p.22
NLC 0750-1250 A ................................................................................. p.22
6. Installation ................................................................................. p.23
Receiving the product ....................................................................... p.23
Packaging handling and removal ................................................. p.23
Lifting with a hoist or crane ............................................................. p.23
Handling with a forklift ..................................................................... p.24
Storage .................................................................................................... p.24
Place of installation ............................................................................ p.24
Positioning ............................................................................................. p.24
7. Minimum technical spaces ..................................................p.25
8. NLC unit operation .................................................................p.26
9. Position of the vibration dampers ....................................p.28
10. Weight distribution and centres of gravity .................... p.30
Weight distribution and centres of gravity when empty ..... p.30
Weight distribution and centres of gravity during
operation ................................................................................................ p.31
Antivibration ......................................................................................... p.32
11. Weights .......................................................................................p.32
12. Dimensional tables ................................................................. p.33
0280-0300-0330-0350 - 00 ............................................................... p.33
0280-0300-0330-0350 - P1-P2-P3-P4 ........................................... p.34
0550-0600-0650-0675 - 00 ............................................................... p.35
0550-0600-0650-0675 - P1-P2-P3-P4 ........................................... p.36
0750 - 00 ................................................................................................. p.37
0800-0900-1000-1100-1250 - 01-02-03-04 ................................ p.38
13. Hydraulic connections ..........................................................p.39
0280-0300-0330-0350 - 00 ............................................................... p.39
0280-0300-0330-0350 - P1-P2-P3-P4 ........................................... p.39
Components supplied for sizes 0550-0600-0650-0675 (00
/ P1-P2-P3-P4 / 01-02-03-04) ........................................................... p.40
0550-0600-0650-0675 - 00 ............................................................... p.40
0550-0600-0650-0675 - P1-P2-P3-P4 ........................................... p.40
0750 - 00 ................................................................................................. p.41
0800-0900-1000-1100-1250 - 01-02-03-04 ................................ p.41
14. Hydraulic connections ..........................................................p.42
Connections .......................................................................................... p.42
Water characteristics .......................................................................... p.42
Discharging system ............................................................................ p.42
Anti-freeze protection ....................................................................... p.43
15. System water content ............................................................ p.44
Minimum system water content ................................................... p.44
Maximum system water content .................................................. p.44
Expansion vessel setting .................................................................. p.45
16. Main hydraulic circuits ..........................................................p.46
NLC 0280-1250 (00) ............................................................................ p.46
NLC 0280-1250 (P1-P2-P3-P4) ......................................................... p.47
NLC 0280-1250 (01-02-03-04) ......................................................... p.48
17. Electrical wiring .......................................................................p.49
Electric data ........................................................................................... p.49
Single hydronic kits’ electric data .................................................. p.49
18. Electric power connection to te electrical mains ........p.50
19. Commisioning - Warnings....................................................p.51
Start-up ................................................................................................... p.51
20. Maintenance .............................................................................p.52
Precautions and preventive measures to observe during
maintenance ......................................................................................... p.52
Routine and extraordinary maintenance ................................... p.53
Decommissioning and disposing of the machine
components .......................................................................................... p.53
21. List of the recommended periodic interventions .......p.54
General interventions ........................................................................ p.54
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