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7. Advices for the Installation
The heating and brine resp. groundwater circuits ha-
ve to be pressure tested, neatly flushed, filled and ca-
refully vented before the TERRA heat pump is put in-
to operation.
Requirements for system start up:
The heating system as well as the buffer tank has
to be filled and vented.
In case of a brine heat pump the brine circuit has
to be filled with anti freeze (-15°C), flushed and
vented.
The electrical installation has to be finished.
It is only allowed to start the heat pump if the cir-
cuits on the cooling and the heating side are pro-
perly filled and the electrical connections are che-
cked.
Before starting up, the flow temperature limit has
to be checked and set. The shut off limit of 55°C
has to be checked and if needed the shut off tem-
perature has to be changed.
The heat pump has a start up delay, so that the
compressor will just start after this time.
To drain the heat pump on the heating side frost
protected the heat pump return connection has to
be opened.
The groundwater return temperature limit has to
be set before start up so that the heat pump shuts
down at a water return temperature of 3°C.
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Note:
At the heat pump console there is a particular switch
to flush and vent the brine or groundwater circuits.
(See illustration)
As soon as the electrical connections (main and con-
trol current) are installed, the brine resp. groundwa-
ter pump can put into operation by switching the
switch onto “Spülen” (“Flush”). The main switch at
the front of the console does not have to be switched
on.
Flush switch for the brine resp. groundwater pump
After the proper commission the switch
has obligatory be set onto “Automatik”.
