FENDT CARAVAN 2021 Operation Manual page 95

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Insofar as your caravan is equipped with the Truma iNet.
System (model-specific/special accessory) you can
also use your smartphone to operate and control the
Truma Combi heating system. Your smartphone must be
suitable and set up for such apps. For more information,
please refer to chapter 7.5 in this operating manual.
Emptying the boiler
If the caravan is not being used when there is danger
of frost or during the frost period, the boiler, contents
of all tanks and water pipes must always be emptied.
• Switch off the electricity for the water pump.
• Open the hot water faucets in the kitchen and the bathroom.
Place an appropriate container (10 litres) underneath the emp-
tying support of the safety/outlet valve to check the amount of
water that runs off.
• Open the safety/outlet valve. The boiler will now be emptied
via the safety/outlet valve directly outside.
• Check to ensure that all of the water in the boiler has really run
off via the safety/outlet valve.
Do not forget to open the other outlet valves for the water pipes. A
further outlet valve is located directly by the Combi heating system.
Two or three further valves (depending on the layout plan) are also
located on the opposite side.
Warranty claims for damage due to frost can not be
accepted!
When the temperature at the automatic FrostControl
safety/outlet valve drops to approx. 3° C, it will open
and the water will be emptied out of the boiler.
Maintenance
Only original TRUMA spare parts may be used for maintenance and
repair work.
The device must be descaled regularly (at least twice a year).
We recommend using TRUMA's special products for cleaning, disin-
fecting and taking care of the boiler. Other products, especially those
that contain chlorine, are unsuitable.
The chemical method used to control microorganisms in the device
can also be supplemented by regularly heating the water in the boiler
to 70° C.
9. Gas