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HIU2-IM-DE-W-DE-08-2018-Rev1_DE-enUS | Art. No. 10078860
EN
ENGLISH
Hot water!
Severe scalding possible.
Do not reach into the hot water when
emptying the HIU 2.
Ensure that the HIU 2 has cooled down
before carrying out maintenance, clean-
ing and repair work.
Install a suitable scalding protection
device at every tapping point (for exam-
ple, safety shut-off valve or thermostat
mixer tap).
More detailed information on scalding
protection can be found in DIN 1988,
sheet 2, clause 4.2.
Danger of scalding!
To avoid scalding when tapping hot water,
appropriate scalding protection must be
provided.
Observe the recognized rules of technology
when doing so.
1. Insert the HIU 2 and connect to the connection rail.
Optional:
2. Install the water hammer arrestor, circulation set and
circulation manifold.
3. Connection to power mains (230V).
4. Set the desired tapping temperature on the thermostatic
head (X).
X
Setting, at max. flow rate with a supply temperature of
65 °C:
Scale
1
I
2
I
3
I
4
I
5
approx.
°C
34
37
41
44
48
51
55
58
63
5. Vent the primary (heating) circuit.
• Slowly open the stop valves on the heat network connec-
tors (see Chapter 4).
•
Open and hold open the vent valve (see Chapter 4) until air
no longer escapes.
6. Vent the secondary circuit (domestic water).
• Slowly open all of the tapping points, one after the other,
and draw water until all lines fill up and all air has been
vented from the system.
