oventrop Regudis W-HTU Duo Mode D'emploi page 30

8.2 Filling and bleeding
DANGER
Danger to life and limb
The fluid escaping during bleeding can be very
hot. Wear protective clothing and cover vent hole
with a cloth if required
6 4a 4b
Illustr. 8.2 Bleeding
Flush heating system thoroughly before initial
operation
– Fill system completely and bleed heating circuit
with the help of the venting valve (6).
– Bleed capillary (4a) of the differential pressure
regulator (4):
– To do so, loosen screw (4b), spanner size 8,
slightly so that the air can escape.
– Bleed until only heating fluid is escaping.
– Tighten screw and check connection for leaks.
– The diaphragm expansion tank (20) must be fixed
on site and can be connected to the isolating facility
(19) with the help of the corrugated hose (see
chapter 6.2).
– Fill heating system of the dwelling completely via
the ball valve of the isolating facility (19).
– Bleed via the venting valve (12).
– The diaphragm expansion tank (20) has an inlet
pressure of 1.5 bar.
– The safety valve (17) has an opening pressure of
3 bar.
NOTICE
A draining pipe and a collection basin must be
installed if required.
Position draining pipe so that no danger can arise
from escaping heating water.
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12
Illustr. 8.3 Filling
8.3 Functional control
The following points must be observed for a functional
control of the dwelling station "Regudis W":
When using a heat meter, no volume flow must be
shown if the heating circuit of the dwelling is closed
and the draw off is not in operation
Heating circuit to the dwelling:
– Open heating circuit / radiator valves of the
dwelling.
– Check whether the required flow temperature (e.g.
65 °C) is reached at the connections D and F (illustr.
4.2).
– Check whether the required return temperature (e.g.
50 °C) is reached at the connections E and G (illustr.
4.2). Adjust setting of the radiator lockshield valves
in the heating circuit if required.
– The heat exchanger must not heat up during
heating operation
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