The units are equipped with
a phase sequence relay which
prevents the operation of
the controller if the direction
of rotation of the electric
power supply is wrong.
The rotary field must be
replaced if the controller
is not activated during
commissioning of the unit.
NOTE
During manual bleeding,
any glycol mixtures which
escape must be disposed
of separately.
NOTE
Additional checks
General checks
■
Checking that minimum
clearances are correct.
■
Checking the transfer of cooling
and heating capacity via
the cold or hot water consumer
(indoor unit).
Electrical checks
■
Checking electrical connections
for correct phase sequencing.
■
Functional check of the cooling
mode/heating mode enable
(option).
■
Functional check of the enable
mode/Stand-By (option).
Checking the medium cycle
■
Checking the circulation pump
for freedom of movement.
■
Checking whether all valves are
open.
■
Checking the medium cycle
■
Setting the circulation pump's
nominal flow rate
Checking the cooling circuit
■
Checking the cooling circuit for
adequate oil/refrigerant.
■
Checking the cooling circuit for
leak tightness.
Diaphragm expansion vessel
■
The preliminary pressure for
the diaphragm expansion vessel
must be adjusted individually to
the system layout, the volume of
the medium and the installation site.
■
If necessary, change the installation
site. For this, the manufacturer's
authorisation is required.
■
For cooling and heating systems, the
volume and the preliminary pressure
for the diaphragm expansion vessel
must be adjusted to both operating
modes; integrate an additional
diaphragm expansion vessel in the
system if necessary.
Valves for hydronic balancing
■
The calculated excess pressure
in the pipe network layout at
the individual cold water outlets
must be adjusted at the valves
for hydronic balancing.
Safety valve
■
The safety valves and their
correct function must be
checked.
■
The drain line for the valves is
to be checked for function and
leak tightness.
■
If necessary, change
the installation site. For
this, the manufacturer's
authorisation is required.
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