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14
Cleaning
The boiler cover can be cleaned with a
moist cloth and afterwards dried and po-
lished with a dry cloth. Never use abrasive
detergents or solvents.
Important: before cleaning the boiler, turn
it off with the main switch.
Regular service
To assure trouble-free and safe running of
your boiler, we recommend that you have
the boiler checked and serviced in regu-
lar yearly intervals. These inspections are
not covered by the boiler’s warranty. The
operations to be done are specified in the
Service Book and must be carried out by
an authorised service.
Procedure of topping up heating water in
the boiler:
• make sure that the boiler is connected to
power supply and the main switch is in “I”
position;
• if the display on the boiler’s control panel
indicates that the HeW pressure is be-
low 0.5 bar, the LED on the control panel
(lightning symbol) will start flashing;
• partially open the top-up valve (blue, Fig.
6). Watch the pressure grow on the boi-
ler’s display panel (to display the pressu-
re press the MODE button);
• fill the system up until the pressure rea-
ches the value between 1 and 2 bar;
• when the required pressure has been
reached, tighten the top-up valves with
your hand;
• thoroughly bleed all radiators (the water
must be running out in a continuous stre-
am, free of air bubbles);
• check whether the pressure shown on
the display is within 1 and 2 bar. If neces-
sary, add more water into the system.
• leave the cap on the automatic bleeding
valve loose at all times (even during boi-
ler operation)
Fig. 6
Warranty and warranty conditions
PROTHERM Tiger 24 (12) KTZ and 24 (12)
KOZ gas boilers are covered by warranty
defined in the Warranty Certificate, the Ser-
vice Book and other conditions specified in
the Operation Guide and Installation Guide
(chapters Introduction and Boiler installati-
on).
Water top-up system
