16
Värmebaronen MP4 G2 / MP6 G2
Installation must take place according to
existing regulations and standards.
The boiler is fitted indoors, hanging, with the pipe
connections downwards.
Note the distance required for any replacement of the
immersion heater.
An internal support sleeve must be used during
connection to prevent damage to the internal piping.
Must not be used for heating fresh water.
As frost protection, the water in the system may be mixed
with maximum 30% glycol.
Heating systems can differ between countries due to
climate, traditions and national regulations. In cases
where the standards violate national regulations, the
latter must be followed. Consider national and individual
requirements.
Water quality - Suitable water supply quality
A water supply is usually classified from a hygiene perspec-
tive. Good water classified on this basis is not automatically
suitable for a heating system.
To avoid problems a technical water analysis should take
place. Any nonconformities with standard values should be
corrected.
Alkalinity ≥ 60 mg/l to avoid corrosion.
Carbonic acid content > 25 mg/l increases the risk of corrosion.
Sulphate content > 100 mg/l may accelerate corrosion. If the
sulphate content is higher than the alkalinity, there is a risk of
copper corrosion.
Hard water causes boiler scale and is not suitable in a
heating system.
Very soft water may cause corrosion damage.
Chloride levels above 100 mg/l make the water aggressive,
especially in combination with lime deposits.
Low pH values may cause corrosion damage. The pH value
should be 7.5- 8.5.
The presence of carbonic acid in combination with low pH
and hardness values makes the water aggressive.
Frost protection - heating systems
If the heating system's water is mixed with anti-freeze, it
is important to check that it contains a suitable quantity of
corrosion-protection additive. When an anti-freeze disinte-
grates, one of the by-products can be carbonic acid, which
increases the risk of corrosion.
If the system's water contains anti-freeze and a low tem-
perature is desired in the system, the frost protection can be
disabled. See menu "Advanced Service Level" row 22. How-
ever, the boiler will try to maintain a temperature of 10°C.
Installation - System in principle
A system in principle is shown below, the actual installation
must be carried out in accordance with existing regulations
and standards.
C
D
A
B
A. Electric boiler MP4/MP6 G2, containing: `
circulation pump
expansion tank
safety valve
overflow valve with shut-off valve scan valves on riser and
return connection.
vent valve
pressure gauge
B. Filling / draining valves (are not included in the delivery).
C. Shut off- / throttle valves (are not included in the delivery).
D. Underfloor heating system.
Expansion tank
Expansion tank: 2 litres, Supply prepressurisation 1.5 bar.
The tank can manage a heating system volume of 70 litres at
60°C and a static pressure of 5 metres.
For a lower static height or temperature the tank can manage
a greater volume.
When glycol is added, the capacity of the expansion tank
decreases in relation to the quantity of glycol added.
Pipe installation
