14
22.04 – 4139181_04
14
22.04 – 4139181_04
WITH PUMPS
Do not fill up the hydraulic system by glycol near the suction of the pump. High
concentration of glycol could stuck the pump. Do not use the pump to mix water
and glycol.
Components as standard
1
Plate heat exchanger
2
Antifreeze electric heater
3
Water temperature sensors (IN/OUT)
4
Air drain valve
5
Flow shut-off valves
6
Water filter
7
Pump
8
Clapet valve
9
Expansion vessel
10 Pressure relief valve
11 Drain valve
Components not provided and responsibility of the installer
12 Anti-vibration joints
13 Expansion vessel
14 Air drain valve
15 Pressure relief valve
16 Storage tank
17 Antifreeze electric heater
18 Drain valve
19 Pressure gauge
20 Loading unit
21 Flow shut-off valves
22 Flow switch (MANDATORY)
6
1
3
3
4
1
1
11
1
5
5
12
13 14
12
7
2
9 10
15
16
17
18
19
20
21
21
22
7
8
7
DA-DJ
PA-PJ
Water characteristics
System: Chiller with plate heat exchanger
PH
7,5 - 9
Total hardness
4,5 - 8,5 °dH
Electric conductivity
10-500 μS /cm
Temperature
< 65 °C
Oxygen content
< 0,1 ppm
Max. glycol amount
50 %
Phosphates (PO₄)
< 2ppm
Manganese (Mn)
< 0,05 ppm
Iron (Fe)
< 0,2 ppm
Alkalinity (HCO₃)
70 - 300 ppm
Chloride ions (Cl-)
< 50 ppm
Free chlorine
< 0,5 ppm
Sulphate ions (SO₄)
< 50 ppm
Sulphide ion (S)
None
Ammonium ions (NH₄)
None
Silica (SiO₂)
< 30 ppm
It is of fundamental importance to keep the oxygen concentration in
the water under control, especially in open vessel systems. This type
of system, in fact, is very sensitive to the phenomenon of extra-oxy-
genation of the water (an event that can be encouraged by the incor-
rect positioning of some components). This phenomenon can trigger
corrosion processes and subsequent drilling of the heat exchanger
and pipes.
Clapet valve
1
Clapet valve
1
The unit with double pump circuit does not have one-way valves. If you
choose to install two units in parallel or in cascade, it is recommended to pro-
vide one-way valves for the correct operation of the unit.
