hajdu C50S Guide De Montage Et D'utilisation page 31

5.2.
The combined safety valve is included
with the container. It is connected to
the hot water tank through the Rp1/2
(inner) Rp3/4 (inner) thread of the
valve, and to the water supply network
through its G1/2 (outer) or 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 difer-
ence 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 11.3) 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-of 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 net-
work in a visible way.
If the water pressure in the pipeline exceeds 0.6 MPa, even on a temporary basis,
5.3.
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 11.3)
Any number of taps and mixing faucets can be mounted on the hot water con-
5.4.
tainer. 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.)
A closing valve needs to be mounted in front of the safety valve and the pressure
5.5.
reduction valve, in order to enable the disconnection of the appliance from the
water network for the purposes of maintenance works. (Figure 11.3)
If the user may be exposed to hot water during the withdrawal of water, we rec-
5.6.
ommend to implement a hydraulic connection with hot water protection. (Figure
11.3))
EN
31