• Descaling:
Remove heating flange, remove coarse scale
by careful tapping, immerse heating element
in limescale remover up to the flange plate.
H
1
1 Safety valve
2 Non-return valve
3 Check valve
4 Throttle
6 Connection point for manometer
7 Funnel with odour trap
I
1
1 Safety valve
2 Non-return valve
3 Check valve
4 Throttle
5 Pressure reducing valve
6 Connection point for manometer
7 Funnel with odour trap
12
• Checking earth conductor in accordance:
Disconnect the plug and remove the thermos-
tat. Test at the thermostat fixing screw and
earth contact of the connection cable.
6
KV 307
2
3 4
6
KV 40
2
3 4
5
100 mm
G ½
70 mm
Ø 14x1 mm
9 mm
100 mm
G ½
70 mm
Ø 14x1 mm
9 mm
100 mm
G ½
1
2
6
3 / 4
7
100 mm
G ½
1
2
6
3 / 4
5
7