Riello NXC 021 - Operation Limits and Ranges

General information
60
EN
1.8 OPERATION LIMITS
Leaving water temperature (°C)
- 20
- 15
-
10
-5
0
5
10
15
20
25
30
35
40
45
15 20 25 30 35 40 45 50 55
40kW only
Outdoor air temperature (°C)
Operating range with anti-freeze and Pro-Dialog conguration
-12
-7
-2
3
8
13
18
23
28
33
38
43
48
53
020810 12 14 16 18 20 22 24
Outdoor air temperature (°C)
Leaving water temperature (°C)
46
NXC / NXH (cooling mode)
NXH (Heating mode)
1.10 ETHYLENE GLYCOL SOLUTIONS
Waterandethyleneglycolsolutionsusedasheattransferu-
idinsteadofwater,causeareductionofthe unit performan-
ce.Multiplytheperformancedatabythe valueslistedinthe
followingtable.
Freezing temperature (°C)
0 -4 -9 -15 -23
Percentage of ethylene glycol in weight
0 10% 20% 30% 40%
Coolingpowercorrectivefactor 1 0.990 0.980 0.960 0.940
Absorbedpowercorrectivefactor 1 0,995 0,992 0,988 0,983
Loadlosscorrectivefactor 1 1.07 1.20 1.35 1.53
* Maximumowrateatanavailablepressureof50kPa
** Maximumowratewithevaporatorentering/leavingwatertemperatureof
12°C/7°C,outdoorairtemperature35°C
1.9 WATER FLOW RATE
Model u.m.
Flowrate
Minimum Maximum* Maximum**
NXC 017 l/s 0.45 1.39 1.26
NXC 021 l/s 0.57 1.52 1.42
NXC 026 l/s 0.67 1.96 1.43
NXC 033 l/s 0.87 2.18 1.72
NXC 040 l/s 1.05 2.60 2.70
Evaporator
Model u.m.
Flowrate
Minimum Maximum* Maximum**
NXH 026 l/s 0.67 2.18 1.72
NXH 033 l/s 0.87 2.29 1.85
NXH 040 l/s 1.05 2.60 2.70
Capacitor