Technical Data
124
89217391 Rev. A
©2022 nVent
14.4 Primary circuit
NOTE
Fill the circuit with an antifreeze and anti-corrosion agent (monoethylene glycol,
e.g. Antifrogen N). Alternatively, fill it with water and an anti-corrosion agent.
Temperature set point range at inlet with glycol (min./max.)
°C
2 … 39
°F
35.6 … 102.2
Temperature set point range at inlet with water (min./max.)
°C
2 … 41
°F
35.6 … 105.8
External cooling requirement
kW
810
BTU/h
2763720
Required flow rate to achieve 800 kW cooling capacity at 4 Kelvin (water)
l/min
1135
US gal/min
300
Maximum system pressure
bar
10.3
psi
150.0
Max. inlet pressure (or differential pressure) when using a 3-way valve
bar
4.0
psi
58.0
Max. inlet pressure (or differential pressure) when using a 2-way valve
bar
1.6
psi
23.2
Pressure drop at 850 LPM (water)
bar
1.3
psi
18.5
System volume
l
50
gal
13.2
Filter in the primary circuit (mesh size)
µm
250
Water quality
pH value
pH
7.0
… 9.0
If there is a risk of frost, use glycol with an anti-corrosion agent. *)
NOTE
•
Comply with the minimum concentration specified by the manufacturer,
e.g. 25 %.
•
Glycol reduces the heating output by up to 15 % depending on the
concentration.
%
50 max.
*) =
Alternatively, use an anti-corrosion agent and biocides.
Sulphides
ppm
<10
Sulphates
ppm
<100
Chloride
ppm
<50
Colonies
CFU/ml
<1000
Total hardness CA CO3
ppm
<200
Residues after evaporation
ppm
<500
Turbidity
NTU
<20
Primary circuit inlet (
Tri-clamp BPE-ASME
)
Prim. IN
inch
3
Primary circuit outlet (
Tri-clamp BPE-ASME
Prim. OUT
inch
3
NOTE
If a "Tri-Clamp
BPE-ASME"
connection fitting is used, observe the dimension
drawing in the appendix.
