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EN.33.C.111.1804
Assembly instructions | LK Electric Boiler - 4,5
Air bleeding
Air may remain in the system for some time after
installation, which is the why water may need to
be replenished.
Measures to counter the risk of freezing
If the unit should be switched off for longer peri-
ods of time care should be taken that it does not
freeze. All of the water in the unit must be drained
out if there is a risk of freezing, and the power
supply to the boiler should be switched off. Alter-
natively, the heating system can be filled with an
appropriate amount of anti-freeze.
The boiler must not be in operation if any part of
the heating system is suspected of being frozen.
Inform the installer!
Draining
Before the water is drained out of the system the
electric boiler should be switched off.
Always switch off the power to the boiler before:
• Water is drained out
• Intervention or maintenance work is carried out
inside the boiler, or any other units supplied with
electricity from the boiler
Temperature setting
Set the thermostat to a suitable temperature.
The maximum temperature for concrete floor joists
is approx. 35-40°C and for wooden joists approx.
40-45°C. The desired temperature varies according
to the time of year.
Safety valve
The safety valve should be exercised regularly to
maintain the safety function.
Overheating (maximum safe temperature)
protection
The overheating (maximum safe temperature) pro-
tection on the boiler is triggered when the boiler
temperature exceeds 80°. The protection is restored
on the control panel, when the boiler temperature
has fallen below 65°C.
Inform the installer!
When
resetting push overheat protection button hard
with a sharp object.
Note!
Always check the reason to overheating!
Thermometer
The thermometer shows the boiler’s feed tempe-
rature.
Expansion vessel
The pre-pressure of the expansion vessel should
be inspected annually, see the data plate attached
to the vessel.
Water pressure in the system
The boiler cover must be removed in order to check
the water pressure. The pressure gauge shows the
pressure in the heating system.
Check regularly that there is sufficient water in
the system. The pressure gauge should display
0,5 - 2,0 bar.
The water volume changes with the temperature,
which in turn affects the pressure. The higher the
temperature, the greater the volume and pressure.
The expansion vessel gathers changes in the vo-
lume.
Check the water pressure in the system regularly!
