AERMEC NRL - Default Chapter; Table of Contents

Summary
1. General warnings ........................................................ 6
1.1. Conserving the documentation ................................ 6
1.2. Safety precautions and installation .......................... 6
2. Description and choice of the unit ........................... 7
2.1. Versions available .......................................................7
2.2. Versions available .......................................................7
2.3. Confi gurator ................................................................. 8
3. Chiller circuit................................................................. 9
3.1. Frame and fans............................................................9
3.2. Hydraulic components ............................................... 9
3.3. Safety and control components .............................10
3.4. Electrical components .............................................. 10
4. Accessories ................................................................11
5. Starting current reduction in presence of dre
accessories ................................................................. 13
6. Technical data .......................................................... 13
6.1. Technical data versions [°-l] ..................................... 13
7. Technical data .......................................................... 15
7.1. Technical data versions [h-hl] .................................. 15
8. Technical data .......................................................... 17
8.1. Technical data versions [c] ...................................... 17
9. Operating limits .......................................................... 18
9.1. Cooling mode ............................................................ 18
9.2. Heating mode ...........................................................18
9.3. Condenser unit operation ........................................ 18
10. Correction factors ..................................................... 19
10.1. Cooling capacity and input power ....................... 19
10.2. Heating capacity and input power ........................ 20
10.3. For ∆t different from the rated value....................... 20
10.4. Fouling factors ...........................................................20
11. Pressure drops ............................................................21
11.1. Total pressure drops (°-l) ........................................... 21
11.2. Total pressure drop (h-hl) .......................................... 22
12. Accumulator .............................................................. 24
12.1. Maximum/minimum water content in the system 24
13. Capacity controls ...................................................... 25
14. Glycol .......................................................................... 26
14.1. How to read the glycol curves ................................26
15. Desuperheater ........................................................... 27
15.1. Pressure drops ............................................................ 27
16. Total recovery ............................................................ 28
16.1. Pressure drop.............................................................. 28
17. M
easurements of the chillers lines versions (c) .......... 29
18. Sound data ................................................................ 30
19. Selection and place of installation ......................... 32
20. Positioning .................................................................. 32
20.1. Minimum technical spaces (mm)............................ 32
20.2. Dimensional tables ....................................................33
21. Weight distribution and center of gravity ............... 36
21.1. Nrl ° - l 2800 - 3000 - 3300 -3600 ................................ 36
21.2. Nrl ° - l - h 2800 - 3000 - 3300 -3600 ........................... 38
22. Hydraulic circuit .........................................................40
22.1. External hydraulic circuit recommended ............... 40
22.2. System load ............................................................... 40
22.3. Emptying the system ................................................. 40
23. Electrical wirings ........................................................ 43
23.1. Recommended section of electric cables ............ 43
23.2. Connection to the power supply ............................ 44
23.3. Electrical power connection ................................... 44
23.4. Auxiliary connections at the user/installer expense 44
24. Control and fi rst start-up ........................................... 45
24.1. Preparation for commissioning ................................ 45
24.2. First commissioning of the machine ........................ 45
24.3. Season changeover.................................................. 45
25. Functioning characteristics ...................................... 46
25.1. Cooling set point ....................................................... 46
25.2. Heating set point ....................................................... 46
25.3. Compressor start delay ............................................. 46
25.4. Circulation pump ...................................................... 46
25.5. Anti-freeze alarm ....................................................... 46
25.6. Water fl ow rate alarm ............................................... 46
26. Regular maintenance ...............................................46
27. Extraordinary maintenance ..................................... 46