Maintenance routines
9
For Home Owners
FIGHTER 600P
FIGHTER 600P has two safety valves, one for the
heating system and one for the water heater.
The heating system safety valve (52) must be com-
pletely tight, but the hot water safety valve(47) may
occasionally release some water after hot water has
been used. This is because the cold water which
enters the water heater to replace the hot water
expands when heated, causing the pressure to rise
and the safety valve to open.
Both safety valves must be checked about four times
a year. Check one valve at a time as follows:
■ Open the valve.
■ Check that water flows through the valve.
■ Close the valve.
■ The heating system may need to be refilled after
checking the safety valve (52), see the section
Commissioning and adjustment - Filling the heat-
ing system.
Checking the safety valves
The building’s ventilation devices should be cleaned
regularly with a small brush to keep the correct venti-
lation. The device settings must not be changed.
NOTE! If you take down more than one ventilation
device for cleaning, do not mix them up.
Check that the ventilation opening (84), behind the
lower front cover, is not blocked. Clean if necessary.
Cleaning the ventilation devices
47
52
Pressure gauge (42) is located behind the upper ser-
vice cover. The pressure gauge reading should be
between the initial pressure of the expansion vessel
(normally 0.5 bar) and 2.5 bar (25 mvp). See Com-
missioning and adjusting
Pressure gauge
42
Check that the temperature of the extract air (channel
5) is clearly lower than the room temperature when
the compressor is operational, also see section Deal-
ing with malfunctions - High extract air temperature. It
is normal that the extract air temperature varies.
Extract air temperature
The sacrificial anode should be checked regularly (at
least four times a year). This is done by pressing the
sacrificial anode test button.
If the pointer remains in the red field the anode must
be changed immediately as the anode is spent and
can no longer fulfil its protection function.
Sacrificial anode test
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