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Subject to change without notice | 83056700fUK – Translation of the original operating manual | ait-deutschland GmbH
● ideal pH value due to self-alkalinisation after filling
the system
● If necessary, simple alkalinisation to pH value 8.2
by adding chemicals
7.3
Fill, flush and vent heat source
The following antifreezes mixed with water are
approved for the brine circuit:
●
Monopropylene glycol
●
Monoethylene glycol
●
Ethanol
●
Methanol
►
For operation of the heat source with water or
water-antifreeze mixture, ensure that the water
fulfils the quality specifications of the heating
water side.
► Check that frost protection is ensured.
►
Ensure that the antifreeze is compatible with the
pipe, seal and other component materials used on
site.
Drain pipe of the safety valve is connected.
Room is ventilated.
1. Mix antifreeze with water thoroughly with the
required ratio, before adding to the heat source.
2.
Check the concentration of the water-antifreeze
mixture.
“Technical data / Scope of supply“, from
page 24
3. Fill the heat source with the water-antifreeze
mixture.
4. Flush heat source system.
5. Flush until the system is air-free.
6.
Vent unit with cooling and 14 kW capacity and higher
via the venting valve on the cold exchanger.
7. Fill the unit via the ball valves in the module box.
7.4 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 un-
der the outlet.
2. Undo screw-on cap in the middle of the circula-
tion pump.
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 cap back on tightly.
5. Dispose of collected liquid according to the local
regulations.
6. Set system pressure to 1 bar.
7. Screw the front panel of the module box.
