Vent The Circulation Pump Of The Heat Source; Flush And Fill The Heating And Domestic Hot Water Charging Circuit - Alpha-InnoTec WZSV Series Operating Manual

7.3 Vent the circulation pump of
the heat source
The front panel of the module box is unscrewed.

NOTE
The figure shows the unit variant with cooling.
In the unit variant without cooling the circula-
tion pump is located in the same place.
1. Place vessel for collecting discharging liquid
under the outlet.
2. Undo deflating screw (①) in the middle of the cir-
culation pump of the heat source.
NOTE
The hose connectors are not part of the
scope of delivery with all KFE ball valves.
3. Wait until liquid is discharged uniformly.
4. Screw the deflating screw (①) of the circulation
pump of the heat source back on tightly.
5. Screw the front panel of the module box.
6. Dispose of collected liquid according to the local
regulations.
7. Set system pressure to 1 bar.
Subject to change without notice | 83056900jUK – Translation of the original operating manual | ait-deutschland GmbH
7.4 Flush and fill the heating and
domestic hot water charging
circuit
Heating water quality
NOTE
● For detailed information refer, among
other things, to the VDI Guidelines
2035 "Vermeidung
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
● Ideal pH value due to self-alkalisation after filling
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.
von Schäden in
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