Maintenance of F1255
F1255 requires minimal maintenance after commissioning. However, it
is recommended that you check your installation regularly.
If something unusual occurs, messages about the malfunction appear
in the display in the form of different alarm texts. See alarm management
on page 76.
BRINE
Brine
The brine that obtains the heat in the ground is not normally consumed,
but just pumped around.
2/3
LEK
LEK
LEK
2/3
LEK
Gamla bilder, med säkerhetsventil på nivåkärlet
1/3
1/3
In most installations, there is a level vessel where you can
check if there is sufficient fluid in the system. The level can
vary due to the fluid's temperature. If the level is below 1/3,
topping up is required.
In some installations, there is an expansion vessel, instead
of a level vessel (for example, where the heat pump is not
the highest point in the brine system), where the system
pressure can be checked. The pressure may vary slightly
due to the fluid’s temperature. The pressure should not fall
below 0.5 bar.
Ask your installer if you are unsure where the level vessel/expansion
vessel is located.
Your installer can also help you to top-up if the level/pressure has
dropped.
SAFETY VALVE
You can find the safety valve on the incoming pipe (cold water) to ?.
The water heater’s safety valve sometimes releases a little water after
hot water usage. 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.
The function of the safety valve must be checked regularly. Perform
checks as follows:
1.
Open the valve.
2.
Check that water is flowing through it.
23Chapter 2 | The heat pump – the heart of the houseNIBE F1255
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