
16 Värmebaronen 400V3~: EP 450, -510, -540, -600, -700 TL / 690V3~: EP 600, -750 TL
Operation and maintenance
Restart after power cut
The boiler does not restart automatically after a power cut.
To start the boiler, follow the instructions in the display.
Disconnection of the function must be evaluated in
collaboration with the end-user and accepted by the
accredited body that assesses the periodic monitoring
of the boiler. See "Electrical installation".
Power connection
The boiler uses binary power increase. Thirty stages are
achieved by connecting and disconnecting the power groups.
Delayed power connection after power cut
Power connection can be time restricted after a power cut,
that was longer than three minutes. When the delay is active,
the green indicator on the control panel flashes. Information
may be displayed in the display. The delay can be temporarily
disabled. See the Installation menu.
Quick increase/reduction
For quick increase/reduction, see the Installation menu.
Load guard
The load guard protects the main fuses against overload
by reducing the boiler's power. When the overload ceases,
the power is reconnected.
PEC function
By measuring the leakage current of the immersion heaters,
the function gives an early indication of a possible fault in the
immersion heaters and thus the possibility of action without
unplanned downtime.
In some installations, the measurement may give incorrect
readings, caused by other equipment connected to the
installation's piping and electrical system providing
vagabonded leak currents. If these currents get too high,
the boiler switches off even if there is nothing wrong with
the boiler. If this occurs, the PEC function should be turned
off. A point on insulation testing of the immersion heaters
should be added to the maintenance plan.
The break value for the PEC function is adjustable.
Safety valves
To maintain the safety function, the heating system's safety
valves must be operated regularly.
Over temperature protection
As a supplement to the temperature switches, the control
electronics have over-temperature protection whose aim
is to prevent as far as possible temperature switches
tripping. The protection disconnects all power in the event
of a temporary temperature increase that may occur as
a result of reduced flow following a pump stoppage.
Maintenance
After 500 hours of operation, the cable connec-
tions must be tightened with a torque wrench.
Check the power cables' connections every 2 years.
The control voltage is not broken by the load-
break switches! External voltage may occur.
Cooling fan
The boiler cooling fan is equipped with an air filter, which is
checked regularly. The interval depends on the environment
in which the boiler is installed, but at least once a year.
Draining
Always cut the power to the boiler and lock the
switches before the boiler water is drained!
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Action in the event of a risk of freezing - frost protection
The boiler must not be in operation if you
suspect that any part of the heating system
is frozen. Call an installation engineer!
In severe cold, no part of the heating system must be turned
o, because there is a risk of frost bursting.If the heating
system must be switched o for long periods the system
should be drained, or the heating system water can be mixed
with maximum 30% glycol. When using a glycol mixture
the boiler power is reduced, or the through flow in the boiler
can be increased.If the heating system's water is mixed with
glycol, *it is important to check that the glycol contains
a suitable quantity of corrosion-protection additive.