Maintenance
HM 8-12 SPLIT and L8 SPLIT/L12 SPLIT require minimal
maintenance after commissioning.
SPLIT contains many components and is why monitoring
functions are integrated to help you.
If something abnormal occurs, a message appears about
malfunctions in the form of different ”alarm” texts in dis-
play.
Checking the safety valves
The installation has been equipped with a safety valve for
the water heater as well as a safety valve for the climate
system by the installer.
The climate system's safety valve
EHZK 90 SPLIT
The climate system's safety valve (FL2) must be completely
sealed. Checks must be carried out regularly as follows:
■
Open the valve.
■
Check that water flows through the valve. If this does
not happen, replace the safety valve.
■
Close the valve again.
■
The climate system may need to be refilled after checking
the safety valve, see the section “Filling the climate sys-
tem”. Contact your installer for refilling the climate sys-
tem.
Safety valve domestic water
The safety valve for domestic water sometimes releases a
little water after hot water has been tapped. This is be-
cause the cold water, which enters the heater to replace
the hot water, expands when heated causing the pressure
to rise and the safety valve to open.
Also check the safety valve for domestic water regularly.
The appearance and location of the safety valve differs
between different installations. Follow the cold water pipe
to locate the safety valve. Contact your installer for inform-
ation.
Pressure gauge in EHZK 90 SPLIT, WWS 300
SPLIT, WWS 500 SPLIT
The working range of the climate system is normally 0.5 –
1.5 bar when the system is closed, depending on the height
of the system. Check this on the pressure gauge (BP5).
SPLIT14
For Home Owners
Maintenance
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