6
Värmebaronen MP4 G2 / MP6 G2
Operation and maintenance
Before starting, check that the installation is in a fully
satisfactory condition.
Ask the installation engineer to demonstrate the regu-
lation and functions so that you know how the system
works and must be maintained.
Check that:
• the boiler and heating system are filled with water,
vented and that the pressure is correct.
• Pipe connections are tight.
• necessary valves are open.
• the vent valve is open so that the air can escape.
• the safety valve is working, water should come out of
the overflow pipe when the valve is in operated.
• the circulation pump is working.
Control panel
6
4
5
4. Overheating protection reset.
5. Control switch
6. Control display - panel circuit board with overlay.
Temperature settings
Set the desired heat curve or temperature.
The temperature requirement varies for the different seasons.
Boiler temperature - constant
Desired boiler temperature, see "User level" row 1 and "Ad-
vanced Service level" row 15.
Safety valve
Safety valves must be operated regularly to maintain the
safety function.
The outlet of the safety valve flows into a collection tank. Check
the water level in the tank regularly and empty it if necessary.
Regularly check the amount of water in the tank
that collects waste water from the safety valve.
Overheating protection
The boiler’s overheating protection is triggered when the
boiler temperature exceeds 80°C.
Check the circulation pump and ensure that the required
valves are open. See also "Flow - overflow valve".
The protection is reset on the control panel when the boiler
temperature has gone below 65°C.
Remove the “RESET plug”, use a screwdriver, press firmly
until you hear a click.
Always check the cause of any protection
being triggered!
If the protection is triggered repeatedly, the
cause should be rectified - Call the installer!
Expansion tank
The pre-charge pressure should be checked by the pipe
installer at intervals of one year.
Filling - Water pressure in the system
Check regularly that there is sufficient water in the heating
system. The cover of the boiler must be removed when
checking. Pressure gauge, displays the pressure in the
heating system.
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.
Water changes its volume with temperature, which affects
the pressure. Higher temperature produces higher volume
and pressure. The expansion tank absorbs the volume
changes.
Check the water pressure in the heating
system regularly!
Float switch
The boiler is equipped with a level guard, which protects the
immersion heater if the water disappears from the boiler. The
function immediately disconnects the connected power and
the circulation pump is stopped.
A warning is displayed,
ot.8
. The boiler automatically
restarts when the water level is restored, the warning must
be acknowledged manually.
