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Subject to change without notice | 83057000jUK – Translation of the original operating manual | ait-deutschland GmbH
7.4
domestic hot water charging
circuit
Heating water quality
NOTE
For detailed information refer, among
other things, to the VDI Guidelines
2035 “Vermeidung von Schäden in
Warmwasserheizanlagen”
Required pH value: 8.2 … 10;
for aluminium materials:
pH value: 8.2 … 8.5
Fill the system with deionised heating water
(VE water) or with water corresponding to VDI
2035 only (low-salt operation of the system).
Advantages of low-salt operation:
Low corrosion-promoting properties
No formation of mineral scale
Ideal for closed heating circuits
the system
If the required water quality is not achieved, con-
sult a company specialising in the treatment of he-
ating water.
Keep a system log for hot water heating systems
in which relevant planning data is entered (VDI
2035).
Drain pipe of the safety valve is connected.
The front panel of the module box is unscrewed.
Ensure that the set pressure of the safety valve is
not exceeded.
1. Pull the U-clip (②)-
tor (①).
2.
3-way changeover valve (③).
3. Turn the spindle of the 3-way changeover valve so
that the rounded side of the spindle points in the
3-way changeover valve.
AB
4. Flush the domestic hot water charging circuit for
approx. 1 minute.
5. Turn the spindle so that the rounded side of the
connections of the 3-way changeover valve.
6. Flush heating circuit thoroughly, until no more air
is discharged.
7. Position the valve motor (①) on the 3-way change-
over valve (③).
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