hajdu Z150S ErP Montage- Und Gebrauchsanleitung Seite 21

EN
to expose the container to pressures higher than the allowed operating
5.2. The combined safety valve is included with the container. It is connected to the
hot water tank through the Rp 3/4 inner thread of the valve, and to the water
supply network through its G3/4 (outer) thread.
In the direction of the water flow, the valve body includes:
one-way valve, spring loaded bypass valve triggered by a pressure difference of
0.01~0.02 MPa, safety valve with 0.65±0.05 MPa opening pressure, and outlet pipe.
The valve must be installed on the cold water pipeline IMMEDIATELY before the
container observing the flow direction indicated by the arrow. (Figure 10.3, page 18)
Before installing the valve, the cold water pipeline must be carefully flushed, in
order to avoid damages due to possible contaminations. The valve may leak,
whereby the outlet should be directed vertically downwards, and the blow-off
button should be accessible. The valve outlet must be directed downward, and
water may leak from the drainage pipe of the pressure release device. This pipe
must be left open towards the air space. The drainage pipe must be directed
downwards (from the appliance) into a frost free room, and free drainage must be
ensured towards the air space. To ensure the proper operation of the water heater,
carefully observe the commissioning drawing. You can direct leaking water into the
sewage network in a visible way.
5.3. If the water pressure in the pipeline exceeds 0.6 MPa, even on a temporary basis, a
pressure reduction valve has to be mounted in front of the hot water tank. This
must be purchased and installed by the customer. The pressure reduction valve is
inserted in front of the combined safety valve. (Figure 10.3, page 18)
5.4. Any number of taps and mixing faucets can be mounted on the hot water
container. You can prevent the back-flow of hot water via the taps by mounting a
one-way valve in front of the water network. (Not included with the product.)
5.5. A closing valve needs to be mounted in the water pipeline in front of the safety
valve and the pressure reduction valve, in order to enable the disconnection of the
appliance from the water network for the purposes of maintenance works. (Figure
10.3, page 18)
5.6. If the user may be exposed to hot water during the withdrawal of water, we
recommend to implement a hydraulic connection with hot water protection.
(Figure 10.3, page 18)
ATTENTION!
pressure!
IT IS FORBIDDEN AND DANGEROUS
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