Draining The Heating Circuit; Cleaning The Magnetic Filter; Magnetic Filter Annual Maintenance - DeDietrich MIT-M /E Installation, User And Service Manual

10 Maintenance
Tab.122 Other inspection and maintenance operations
Check
Electrical connections
Screws and nuts
Insulation
Filters
Flow rate in heating mode
Flow rate in domestic hot water mode
Hydraulic pressure
Casing
10.3

Draining the heating circuit

1
2
10.4

Cleaning the magnetic filter

Fig.64
2
Fig.65
3
94 MIT-M
1. Connect a hose (internal diameter: 8 mm) to the drain valve on the
heating circuit.
2. Open the drain valve.
3. Await the complete drainage of the heating circuit.
To prevent the plate heat exchanger from becoming clogged, the magnetic
filter in the indoor unit should be cleaned every year as part of the annual
maintenance.
If there is a flow fault on the installation, the filter should be fully cleaned.
10.4.1
1. Power off the appliance.
2. Remove the magnet from the filter.
The magnetic particles stuck inside the filter will drop to the bottom
and be ejected via the drain.
MW-1001305-1
3. Connect a pipe to the filter valve, then open the valve by a quarter
turn.
MW-1001306-1
Operations to be carried out
Replace any faulty parts and cables.
Check all screws and nuts (cover, support, etc.) are correctly
tightened.
Replace any damaged sections of insulation
Clean the filters. See dedicated chapter.
See dedicated chapter.
See dedicated chapter.
Recommended hydraulic pressure: 1.5 bar to 2 bar
Clean the outside of the appliance using a damp cloth and a
mild detergent.

Magnetic filter annual maintenance

7756241 - v02 - 19062020