Fiat X2-50 Cab, Owner'S Manual

Page: 59 / 124

heater has not been used. As an alternative,
two shut off valves, resistant to hot water,
can be fitted in front of the cold and hot
water connection.
WARNING: 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
1. Interrupt power for water pump
(via control panel).
2. Open hot water taps in kitchen and
bathroom.
3. Open safety/drain valve: lever in the
vertical position (Fig A)
The water heater content is now emptied to
the outside through the safety/drain valve.
Place a bucket beneath the outlet to check
whether the water content has completely
drained away (12 litres!).
There shall be no
guarantee claims for damage caused by
frost!
MAINTENANCE
The water container used is made of
stainless steel, which is foodstuff-
compatible.
Use wine vinegar for descaling the water
heater, this being introduced into the
appliance via the water supply. Allow the
product to react and then thoroughly flush
out the appliance with plenty of fresh water.
To sterilise the water we recommend
‘Certisil-Argento’. Other products,
particularly those containing chlorine are
unsuitable.
To avoid infestation by micro-organisms, the
boiler must be heated to 70°C at regular
intervals (only possible in winter operation).
Do not use the water as drinking water!
Fuses 12 V
The 12 V fuses for the device are located on
the electronic control unit (12). The fine-wire
fuse must only be replaced by a fuse of the
same design.
F1: 6.3 A, slow-acting
F2: 1.6 A, slow-acting
Fuses 230 V
The fuses and power connection cables
must always be replaced by experts!
WARNING: Disconnect all poles of the
unit from the mains before opening the
housing containing the power
electronics.
The 230 V fuse of the unit is in the power
electronics (13) on the unit.
This fine fuse must always be replaced with
a fuse of the same type.
10 A, slow-acting, cut-off delay ‘H’.
Overheating protection 230 V
The 230 V heating facility has a mechanical
overheating switch. If the 12 V power supply
is interrupted during operation or during the
after run period, for example, the
temperatures within the unit could trigger the
overheating protection.
68
Equipment Details