Alpha-InnoTec LW 161H-A, Operating Manual

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Subject to change without notice | 83061500bUK | ait-deutschland GmbH
23 Flushing, filling and venting
the system
IMPORTANT
The system must be absolutely free from air
before commissioning.
Unsuitable quality of the water for filling up
and replenishing the heating circuit
The efficiency of the system and the service life of the
heat generator and the heating components depend
decisively on the quality of the heating water.
If the system is filled with untreated drinking water, cal-
cium deposits will form as scale. Lime scale deposits
accumulate on the heat transfer surfaces of the heat-
ing. The efficiency is reduced and energy costs in-
crease. In extreme cases, the heat exchangers will be
damaged.
Heating water quality
NOTE
● For detailed information refer, among
other things, to the VDI Guidelines
2035 “Vermeidung von Schäden in
Warmwasserheizanlagen” (preventing
damage in hot water heating systems)
● 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 the VDI
2035 norm 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).
5. Seal empty pipes on the unit side.
6. Screw the facing panels onto the heat pump.
Position each of the lower facing panels at an
angle in the unit frame, hang on the unit frame at
the top and close the quick-release screws.
7. Install the return flow sensor included in the scope
of supply.

Operating manual of the wall-mounted controller,
“Electrical connection“ section