Equipment details
86
If just the cold water system is being operated,
without using the water heater, the heater tank
also fills up with water. To avoid frost damage,
the boiler must be drained through the drain
valve, even if it was not operated.
When connecting to a central water supply
(rural or city mains), a pressure reduction valve
must always be installed to prevent pressures
above 2.8 bar from developing in the water
heater.
Draining the water heater
Switch off power to water pump (main or pump
switch).
Open hot water taps in kitchen and bathroom.
In order to check the water that is flowing out,
place an appropriate container (capacity 10
litres) beneath the drain valve (FrostControl)
drainage muff (x).
Turn the rotary switch on the drain valve by
180° until it engages, whereby the push button
moves out and the drain valve opens.
Check whether all of the water in the boiler (10
itres) has been drained into the container via
the drain valve.
There shall be no claims under guarantee for
damage caused by frost!
Maintenance
Only original Truma parts may be used for
maintenance and repair work! Materials in the
device which come into contact with water
are suitable for use with drinking water (see
manufacturer‘s declaration: www.truma.com /
downloads / manufacturer‘s declaration).
Bio-film, deposits and limescale must be
removed using chemicals to protect the unit
from infestation by microorganisms.
Only chloride-free products must be used in
order to prevent damage to the unit.
The effectiveness of the use of chemicals to
combat microorganisms in the unit can be
increased by heating the water in the boiler to
70 °C at regular intervals.
Move power selector switch to gas operation
(d) to do this.
Move the rotary switch on the control panel
to position (I – summer operation) 60 °C. The
green (k) and yellow (p) LEDs light up.
Once the water in the boiler has reached a
temperature of 60 °C, the burner will switch
off and the yellow LED (p) will go out. The unit
must stay switched on for at least 30 minutes
and no warm water may be removed. The
residual heat in the heat exchanger will heat the
water up to 70 °C.
Fuses 12 V
The fuse is in the electronics beneath the
connection cover.
Replace the unit’s fuse only with an
identical fuse.
Device fuse: 10 A – slow – (T 10 A)
Fuses 230 V
The fuse and the power supply lines must only
be replaced by an expert!
The unit must be disconnected from the mains
(all poles) before opening the electronic housing
lid.
The fuse is in the power electronics (16)
beneath the electronic housing lid.
This fine fuse must always be replaced with a
fuse of the same type: 10 A, slow, interrupting
capacity “H”.
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