EN-10 452234.66.46 · FD 9306
English
SMW-XP-50TU - SMW-XP-100TU
9.4 Water quality requirements
Irrespective of any legal regulations, the ground water should not
contain any substances that could form deposits. Iron (< 0.2 mg/
l) and Manganese (< 0.1 mg/l) limit values must be adhered to to
prevent iron ochre sedimentation from forming in the heat source
system.
The use of surface water or water containing salt is not permissi-
ble. Your local water utility can provide you with general informa-
tion regarding the possible use of ground water. Water analyses
are carried out by specially-equipped laboratories.
Irrespective of any legal regulations, a water analysis must be
carried out to establish conclusively whether the ground water is
compatible for the evaporator of a heat pump (see table).
If one characteristic is negative “-” or two characteristics are “0”,
the water quality is not sufficient for the heat pump.
If the necessary water quality is not achieved or if this cannot be
guaranteed long-term, we recommended installing a brine-to-
water heat pump equipped with an intermediate circuit.
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]
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. The deinstallation of the heat pump
must be performed by technical personnel. Observe all environ-
mentally-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 disposal of refrigerants and refrigerant oils.
Evaluation characteris-
tic
Approximate
concentration
range (mg/l)
Evaluation of
the copper
Substances that can settle (org.)
0
Ammonia NH
3
< 2
2 to 20
> 20
+
0
-
Chloride
< 300
> 300
+
0
Electrical conductivity
< 10
S/cm
10 to 500
S/cm
> 500
S/cm
0
+
-
Iron (Fe), dissolved
< 0.2
> 0.2
+
0
Free (aggr.) carbonic acid
< 5
5 to 20
> 20
+
0
-
Manganese (Mn), dissolved
< 0.1
> 0.1
+
0
Nitrate (NO
3
), dissolved
< 100
> 100
+
0
PH value
< 7.5
7.5 to 9
> 9
0
+
0
Oxygen
< 2
> 2
+
0
Hydrogen sulphide (H
2
S)
< 0.05
> 0.05
+
-
HCO
3
-/SO
4
2
-
> 1
< 1
+
0
Hydrogen carbonate (HCO
3
-)
< 70
70 to 300
> 300
0
+
0
Aluminium (Al), dissolved
< 0.2
> 0.2
+
0
Sulphate
< 70
70 to 300
> 300
+
0
-
Sulphite (SO
3
), free
< 1
+
Chlorine gas (Cl
2
)
< 1
1 to 5
> 5
+
0
-
