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EREBA ACCESS 17 - 40 T/HT
EN - 10
CIAT recommendations on heat exchange fluids:
• No NH
4+
ammonium ions in the water, they are very detrimental for
copper. This is one of the most important factors for the operating life
of copper piping. A content of several tenths of mg/l will badly corrode
the copper over time (the plate heat exchangers used for these units
have brazed copper joints).
• Cl- Chloride ions are detrimental for copper with a risk of perforations
by corrosion by puncture. If possible keep below 10 mg/l.
• SO
42-
sulphate ions can cause perforating corrosion, if their content is
above 30 mg/l.
• No fluoride ions (<0.1 mg/l).
• No Fe
2+
and Fe
3+
ions with non negligible levels of dissolved oxygen
must be present. Dissolved iron < 5 mg/l with dissolved oxygen < 5
mg/l.
• Dissolved silica: silica is an acid element of water and can also lead to
corrosion risks. Content < 1mg/l. Water hardness: > 0.5 mmol/l. Values
between 1 and 2.5 can be recommended. This will facilitate scale
deposit that can limit corrosion of copper. Values that are too high can
cause piping blockage over time. A total alkalimetric titre (TAC) below
100 is desirable.
• Dissolved oxygen: Any sudden change in water oxygenation conditions
must be avoided. It is as detrimental to deoxygenate the water by
mixing it with inert gas as it is to over-oxygenate it by mixing it with pure
oxygen. The disturbance of the oxygenation conditions encourages
destabilisation of copper hydroxides and enlargement of particles.
• Electric conductivity 600µS/cm
• pH: Ideal case pH neutral at 20-25°C - 7 < pH < 8
Do not introduce any significant static or dynamic pressure into the
heat exchange circuit (with regard to the design operating pressures).
An hydraulic connector is available inside the unit for sizes 17-21 kW. A
picture of this part is shown here below. The aims of this part is to have
the same dimensions between water outlet and water inlet.
Outlet available static pressure of the unit with hydraulic module
Data applicable for pure water at 20°C
Data applicable for:
- Fresh water 20 °C
- In case of use of the glycol, the maximum water flow is reduced.
A
vailable sta
tic pr
essur
e, kP
a
Water flow rate, l/s
Legend
1.
EREBA ACCESS 17 T/HT
2.
EREBA ACCESS 21 T/HT
3.
EREBA ACCESS 26 T
4.
EREBA ACCESS 33 T / 26 HT
5.
EREBA ACCESS 33 HT
6.
EREBA ACCESS 40 T/HT
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300
0.0
0.5
1.0
1.5
2.0
2.5
4
2
3
6
5
1
Содержание EREBA ACCESS 17-40 T/HT
Страница 1: ...EREBA ACCESS 17 40 T HT 11 2017 X0178 Instruction manual...
Страница 2: ......
Страница 113: ...RU RU 111 NR 17 19 A 5 70 o C R 410A CIAT 0 C 300 2...
Страница 114: ...NR 17 19 A RU 112 10 15 CIAT 7511632 17 21 7511634 26 40 16 26 40 I 26 40 1 2 15...
Страница 119: ...RU RU 117 NR 17 19 A EREBA ACCESS T HT R 410A 410A 50 70 R 22 R 410A R 410A R 410A R 410A R 410A HFC POE...
Страница 121: ...RU RU 119 NR 17 19 A 26 40 6 9...
Страница 126: ...NR 17 19 A RU 124 II II 5 5 1 5 100 C 15 C RTPF AFNOR X60 010 12...
Страница 127: ...RU RU 125 NR 17 19 A 1 2 X X X X X X 1 EN 378 3 2 1 EN 378 1 CIAT CIAT EN 378 4 1 1 EN 378...
Страница 128: ...NR 17 19 A RU 126 EREBA ACCESS HT 4 13...
Страница 129: ......