Checking external addition with internal immer-
sion heater blocked
1.
Select "Ext. 1 step" in menu 9.2.8.
2.
Select operating mode "Add. heat only" by holding in
the operating mode button for 7 seconds.
3.
Ensure that the max temperature from the external
additional heat does not exceed 65 °C.
4.
Select operating mode "Auto" by pressing the operat-
ing mode button.
Checking external addition (not controlled by
HM 8-12 SPLIT) with internal immersion heater
as backup
1.
Adjust the start temperature of the additional heat so
that it starts at a higher temperature than the internal
electric additional heat (see set value in menu 1.2).
2.
Adjust the additional heat's stop temperature so that
the temperature in HM 8-12 SPLIT does not exceed 65
°C.
Inspection of the installation
Current regulations require the heating installation to be
inspected before it is commissioned. The inspection must
be carried out by a suitably qualified person and should
be documented. Use the check list on the following page.
The above applies to closed climate systems.
Do not replace any part of the split-system without carrying
out new checks.
Cleaning the particle filter
Clean the particle filter (HQ1) after installation.
1.
Close valve QM31 and the valve by the particle filter
(HQ1).
2.
Open the vent valve (QM20) to ensure that the pres-
sure in HM 8-12 SPLIT falls.
3.
Clean the particle filter (HQ1) as illustrated.
Secondary adjustment
Air is initially released from the hot water and venting may
be necessary. If gurgling sounds can be heard from HM
8-12 SPLIT or from the climate system, the entire system
will require additional venting.
NOTE
Use vent valve (QM20), any external vent valves as
well as safety valve (FL2). The latter must be operated
carefully as it opens quickly. When the system is stable
(correct pressure and all air eliminated) the automatic
heating control system can be set as required.
See Default setting on page 9.
41SPLIT
For the Installer
Start-up and inspection
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