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Värmebaronen MP4 G2 / MP6 G2
Safety valve
The safety valve, 2.5 bar, is fitted to the boiler, the over-flow
pipe empties into a drip bowl in the boiler cupboard.
Filling - draining
Filling the boiler and heating system is preferably done
through a fixed filling line or with a hose in the drain valve.
The heating system must be filled with water to a pressure
that is higher than the expansion tank’s pre-charge pressure,
1.5 bar. 2 bar is recommended.
Filling - venting
When the system is full of water, it must be vented on the
immersion heater and the pipe distributions.
The vent valve protective cover must be loosened by 1.5
turns so that the air can escape.
In order for the vent valve to function satisfactorily, the sys-
tem pressure should not be less than 1.5 bar.
Flow - overflow valve
The flow must be ensured, the overflow valve should be open
1 - 4 turns. Delivery setting 2¼ turns.
If the valve is:
- not open enough the pump can be damaged and the risk
increases that the overheating protection will be triggered.
- if it is open too much it can cause the circulation in the
heating system to be insufficient.
Shut-off valves, risers and
return to the boiler.
Adjustment valve, accessible
when the protection lid has
been screwed off.
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Pipe installation
Circulation pump
Information about the pump is found in the enclosed leaflet.
Delivery setting: lowest constant pressure curve.
If parts of the heating system do not become warm this
might need to be increased.
Selecting a higher curve increases the pump’s energy con-
sumption and operational costs.
A magnetic filter should always be fitted
before the circulation pump in order to prevent
operational problems.
