Vaillant geoTHERM SERIES, Руководство по установке

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Start-up
68
Installation instructions geoTHERM 0020051574_04
8
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Check that the fluid level in the brine expansion tank has
stabilised - in other words, that there are no longer any
significant fluctuations.
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Allow the brine pump to continue running so that the air
that is contained in the brine circuit can be captured in
the brine expansion tank. When the air escapes, the liq-
uid level in the brine expansion tank falls and must be
filled up again (
¬
Ch. 6.3 ).
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Open the expansion relief valve on the brine expansion
tank (
42a ) (
¬
Fig. 5.9 ), in order to allow any overpres-
sure to escape if it is above the required fill pressure of
200 kPa (2,0 bar) and below the expansion relief valve’s
operating pressure of 300 kPa (3 bar) . The brine expan-
sion tank must be 2/3 full of fluid.
Check the filling level of the brine fluid
In the first month after commissioning the heating installa-
tion, the filling level for the brine fluid may fall slightly and
this is completely normal. Although the filling level can also
vary depending on the temperature of the heat source,
However, it must never sink so far that it is no longer visible
in the expansion tank.
The filling level is correct when the brine expansion tank is
2/3 full.
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Refill the brine fluid if the filling level falls so low that it
can hardly be seen in the brine expansion tank.
8.1.5 Checking and bleeding the heating circuit
If you have to manually operate the heating circuit pump
and all of the diverter valves to bleed the heating circuit,
use the menu A5/A6 to do this (
¬
Ch. 9.7.4 ).
8.1.6 Bleeding the DHW tank, if required
If an external DHW tank is connected:
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Open all domestic hot water draw-off points
in the building.
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Close all draw-off points as soon as hot water escapes.
8.2 Handing the heating installation over to the
operator
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Instruct the operator of the heating installation on how
to handle and work all of the units.
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Pass all of the manuals and documentation for the unit
to the operator to be stored.
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Make the operator aware that the manuals must be kept
in the vicinity of the heat pump. Point out to the opera-
tor that the heating installation must be inspected at
regular intervals.
b
Caution!
Risk of damage caused by deactivating
components for frost protection
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Inform the operator about the prerequi-
sites for emergency operation and the
automatic frost protection function.
Some operators generally want any optional electric auxil-
iary heater to be completely shut down.
In menu C7 (
¬
Tab. 9.6 ), if “Auxiliary heater” is set for “Aux
on during CH” and “Domestic hot water mode” is set for
“No CH”, the emergency operation is not supported. How-
ever, the frost protection function can still be used (acti-
vates itself automatically).
If, in menu A3 (
¬
Tab. 9.9 ) , “hydraulic integration of the
auxiliary heater” is set to “none”, neither the emergency
operation nor the frost protection function can be used.
At the factory, by setting “None” in menu A3, no external
electric auxiliary heater is included.