4
14_09. 5641250_01
NRL free cooling 0280-0750 60Hz
EN
INDEX
1.
Description and choce of unit
........................................................... 6
2.
Check list .......................................................................................... 7
3.
Principle of operation schemes
......................................................... 8
3.1.
Production of cold water only the system
........................................ 8
3.2.
Cold water production and the system recovery (desuperheater)
... 9
4.
Operating limits
.............................................................................. 10
4.1.
Design specifications
....................................................................... 10
5.
Selection and place of installation
.................................................. 11
5.1.
Minimum technical ......................................................................... 11
6.
Positioning
...................................................................................... 11
7. Dimension ....................................................................................... 12
8.
Antivibration positioning
................................................................. 14
9.
Hydraulic connection
...................................................................... 16
9.1.
Hydraulic connection NRL 0280-0350 F
......................................... 16
9.2.
Hydraulic connection
NRL 0500 - 0750 F
........................................ 16
10.
Distribution of percentage weights on supportingpoints
............... 17
11.
Hydraulic circuit .............................................................................. 19
11.1.
Hydraulic circuit (versions P3-P4)
................................................... 19
11.2.
Hydraulic circuit (versions 03-04)
.................................................... 20
11.3.
System load .................................................................................... 21
11.4.
Emptying the system ....................................................................... 21
12.
Electrical wirings ............................................................................. 22
12.1.
Recommended section of electric cables
........................................ 22
13.
Electrical power connection
............................................................ 23
13.1.
Auxiliary connections at the user/installer expense
....................... 23
14.
Control and first start-up
................................................................. 24
14.1.
Preparation for commissioning
....................................................... 24
14.2.
First commissioning of the machine
............................................... 24
14.3.
Season changeover ......................................................................... 24
15.
Functioning characteristics
............................................................. 25
15.1.
Cooling set point ............................................................................. 25
15.2.
Heating set point
............................................................................. 25
15.3.
Compressor start delay ................................................................... 25
15.4.
Circulation pump
............................................................................. 25
15.5.
Anti-freeze alarm
............................................................................ 25
15.6.
Water flow rate alarm
..................................................................... 25
16.
Regular maintenance ...................................................................... 25
17.
Extraordinary maintenance............................................................. 25
