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Subject to change without notice | 83050700fUK – Translation into English of the original German operating manual | ait-deutschland GmbH
Bleeding
VIEW OF INSIDE OF UNIT, SIZE 1
1 Electrical switchbox
2 Overflow valve
3 Electric heating element
4 Circulation pump, heating circuit
5 Fill and drain tap, heating circuit
VIEW OF INSIDE OF UNIT, SIZE 2
A
B
A 28kW unit
B 44kW unit
1 Electrical switchbox
2 Overflow valve
3 Circulation pump, heating circuit
4 Fill and drain tap, heating circuit
BLEEDING THE UNIT
The unit is bled automatically if the bleeder (vent valve)
of the safety assembly is open. If the heating circuit is
filled or drained, the venting valve of the safety assembly
opens.
BLEEDING THE CIRCULATION PUMP OF THE HEATING
CIRCUIT
Unscrew the screw cover in the middle of the circulation
pump until loose and close again after venting.
BLEEDING THE DOMESTIC HOT WATER TANK
To bleed the domestic hot water tank, the domestic hot
water charge circuit must be flushed separately.
To do this, manually switch the domestic hot water
changeover valve to domestic hot water charging. After
bleeding, return it to the initial position.