34
INSTALLATION - HYDRAULIC DIAGRAMS AND WATER FEATURES
i
nternal
and
external
hydraulic
circuit
NRB 0
0 (
standard
)
Unit
Components recommended
4
13
1
2
2
5
6
7
8
9
10
10
11
11
11
11
12
14
3
5
9
15
COMPONENTS PROVIDED AS STANDARD
1
Plate heat exchanger
2
Water temperature sensors
3
Antifreeze electric heater (standard in the heat exchanger)
4
Water filter
5
Air vent valve
6
Safety valve
7
Flow switch
8
Pressure gauges
9
Drain valve
HYDRAULIC COMPONENTS RECOMMENDED EXTERNAL TO UNIT
(RESPONSIBILITY OF THE INSTALLER)
3
Antifreeze electric heater
5
Air vent valve
9
Drain valve
10
Anti-vibration joints
11
Cut-off valve
12
Pump
13
Expansion Tank
14
System buffer tank (installation recommended whenever the system water content is less than
that indicated in technical manual)
15
Automatic Filling Valve
water
features
System: Chiller with plate heat exchanger
PH
7,5-9
Electric conductivity
100-500μS/cm
Total hardness
4,5-8,5°dH
Temperature
< 65°C
Oxygen content
< 0,1 ppm
Max. glycol amount
50%
Phosphates (PO4)
< 2ppm
Manganese (Mn)
< 0,05 ppm
Iron (Fe)
< 0,3 ppm
Alkalinity (HCO3)
70 - 300 ppm
Chloride ions (Cl-)
< 50 ppm
Sulphate ions (SO4)
< 50 ppm
Sulphide ion (S)
none
Ammonium ions (NH4)
none
Silica (SiO2)
< 30ppm
Summary of Contents for NRB 0282 Series
Page 2: ......
Page 12: ...12 DIMENSIONS mm 0282 e _0302 l 0282 L...
Page 13: ...13 0282 n _0302 e _0332 l 0302 n _0332 e n _0352 l e...
Page 15: ...15 0604 l a e _0654 l 0604 u n _0654 a e u n _0704 l a e _0754 l a e...
Page 16: ...16 0702 u n _0752 u n 0704 u n _0754 u n...
Page 20: ...20 bottom view bottom view LAYOUT 4 LAYOUT 5 YG XG YG XG...
Page 55: ......