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WI 50TU - WI 100TU
Table:
Resistance of copper-soldered stainless steel plate heat ex-
changers to substances contained in the water
+
Normally good resistance
0
Corrosion problems can arise,
particularly if several factors receive an evaluation of "0"
-
Should not be used
[<: less than, >: greater than]
Evaluation characteris-
tic
Substances that can settle (org.)
Ammonia NH
3
Chloride
Electrical conductivity
Iron (Fe), dissolved
Free (aggr.) carbonic acid
Manganese (Mn), dissolved
Nitrate (NO
), dissolved
3
PH value
Oxygen
Hydrogen sulphide (H
S)
2
2
HCO
-/SO
-
3
4
Hydrogen carbonate (HCO
-)
3
Aluminium (Al), dissolved
Sulphate
Sulphite (SO
), free
3
Chlorine gas (Cl
)
2
EN-9
Approximate
Evaluation of
concentration
the copper
range (mg/l)
0
< 2
+
2 to 20
0
> 20
-
< 300
+
> 300
0
< 10 S/cm
0
10 to 500 S/cm
+
> 500 S/cm
-
< 0.2
+
> 0.2
0
< 5
+
5 to 20
0
> 20
-
< 0.1
+
> 0.1
0
< 100
+
> 100
0
< 7.5
0
7.5 to 9
+
> 9
0
< 2
+
> 2
0
< 0.05
+
> 0.05
-
> 1
+
< 1
0
< 70
0
70 to 300
+
> 300
0
< 0.2
+
> 0.2
0
< 70
+
70 to 300
0
> 300
-
< 1
+
< 1
+
1 to 5
0
> 5
-
452234.66.37 · FD 9202
9.5 Maintenance
According to regulation (EC) No. 842/2006, all refrigerating cir-
cuits with a minimum refrigerant quantity of 3kg, or of 6 kg in the
case of "hermetically sealed" refrigerating circuits, must be
tested for leaks by the operator every year.
The leak test must be documented and archived for a minimum
of 5 years. The test is to be carried out by certified personnel
only, according to regulation (EC) No. 1516/2007. The table en-
closed in the appendix can be used as a basis for the documen-
tation.
NOTE
Local regulations may differ from EU directive 842/2006. The appropriate
local regulations for heat pump leak tests must be observed.
10 Faults / troubleshooting
This heat pump is a quality product and is designed for trouble-
free operation. In the event that a fault should occur, it will be in-
dicated on the heat pump manager display. In this case, consult
the Faults and troubleshooting page in the operating instructions
of the heat pump manager. If you cannot correct the fault your-
self, please contact your after-sales service technician.
ATTENTION!
Any work on the heat pump may only be performed by authorised and
qualified after-sales service technicians.
ATTENTION!
Disconnect all electrical circuits from the power supply before opening
the enclosure.
11 Decommissioning /
disposal
Before removing the heat pump, disconnect it from the power
source and close all valves. Observe all environmentally-relevant
requirements regarding the recovery, recycling and disposal of
materials and components in accordance with all applicable
standards. Particular attention should be paid to the proper dis-
posal of refrigerants and refrigerant oils.
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