Placing the unit in standby mode
!
Please note
Starting the compressor in a
cold state can result in equip-
ment damage.
Prior to commissioning, leave
the unit at least 4 hours in
standby mode.
Only commission the unit when
the lower part of the compres-
sor is at least warm to the
touch.
1. Start the unit with the ON/OFF
switch (B in the Fig. on page 6 or
A in the Fig. on page 8)
The return temperature is dis-
played on the programming unit.
2. The following only applies if a
dot is shown in the segmented
display:
The unit is in standby mode.
Leave the unit in this state for
approx. 4 h.
3. The following only applies if fig-
ures are shown in the segmented
display:
Press D (see page 27).
A dot appears in the programming
unit display. The unit is in standby
mode.
Leave the unit in this state for
approx. 4 h.
Ensuring that load is drawn
Prior to switching the unit ON, ensure
a load of at least 60 % of the rated
output is drawn, in the respective
operating mode (heating/cooling).
For this, fully open the valves in the
heating or cooling circuit as well as
any other control elements that may
be installed.
Switching the unit ON
!
Please note
Starting the compressor in a
cold state can result in equip-
ment damage.
Prior to commissioning, the
unit must have been in standby
mode for at least 4 h.
Only commission the unit when
the oil sump of the compressor
is at least warm to the touch.
!
Please note
A sudden change from heating
to cooling mode can result in
high pressure faults.
Prior to a changeover, the
return temperature must have
fallen below 25 °C.
1. Press D.
The programming unit display
shows the return temperature.
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