Installation; Wall Installation; Shut-Off Fittings; Safety Module - meibes XL Documentation Technique Pour Le Montage Et La Mise En Service

3. Installation

3.1 Wall installation

The system should be installed on a dry wall that can take the load. The distance to the collectors should be selected in
such a way that the station and the expansion tank cannot overheat (use an auxiliary vessel if necessary). Hazards as a
result of adjoining masonry components, electrical cables or gas, water or heating pipes must be avoided. Free access to
the station, safety fittings and connection lines must be ensured.

3.2 Shut-off fittings

When installing the safety components outside of the station, the shut-off valves must remain open and be secured against
unintentional closure. The safety parts must only be activated by qualified specialist personnel!

3.3 Safety module

The safety module is used for protection against excessive pressure in the
secondary circuit (e.g. to the buffer accumulator)
primary circuit (to the solar circuit)
It is installed at delivery directly in the feed lines of both circuits.
Legend:
Primary side: (Solar circuit)
1. T-piece with clamp connections 22 mm
2. Small safety distribution board
3. Safety valve 6 bar 1/2" x 3/4"
4. Connection option 3/4" e.g. for MAG
5. Fill and drain valve with hose nozzle
6. Manometer of up to 10 bar
7. Ball valve
Secondary side (heating circuit)
10. Connection option 3/4" e.g. for MAG
11. T-piece
12. Safety valve 3 bar 1/2" x 3/4"
13. Ball valves
When installing the safety components outside of the station, the shut-off valves must remain open and be secured against
unintentional closure.
The safety parts must only be activated by qualified specialist personnel!

3.4 Connecting an expansion tank (provided by the customer)

Expansion tanks accommodate the changes in volume when heating or cooling the heat transfer fluid and retain a fluid
reserve to offset minor leakages. Only suitable and properly designed expansion tanks (see DIN 4807) are to be used.
In the event of relevant prevailing temperatures use any auxiliary vessels.

3.5 Heat transfer medium

Only use suitable and approved solar fluid with antifreeze (see DIN 4757), which is suitable for solar systems! Note the
manufacturer and type, because in some circumstances these cannot be mixed with agents from other manufacturers.

3.6 Backflow preventer

In the secondary circuit a backflow preventer is installed at delivery, which prevents uncontrolled circulation of the heating
medium and consequently counteracts any cooling of the accumulator.
Cracking pressure: 200 mm water column
When filling and flushing the system, note the flow direction!
15