hajdu IDE75F ErP Instructions For Installation And Use Manual page 22

IDE...F ErP • IND...F ErP
5.2. The combined safety valve is not 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 fl ow, the valve body includes:
one-way valve, spring loaded bypass valve triggered by a pressure diff erence 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 fl ow direction indicated by the arrow. (Figure 10.3) Before
installing the valve, the cold water pipeline must be carefully fl ushed, 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 direct-
ed downward, and water may leak from the drainage pipe of the pressure re-
lease 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.
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 10.3)
Any number of taps and mixing faucets can be mounted on the hot water con-
5.4.
tainer. You can prevent the back-fl ow 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 the water pipeline in front of the safety
5.5.
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)
If the user may be exposed to hot water during the withdrawal of water, we
5.6.
recommend to implement a hydraulic connection with hot water protection.
(Figure 10.3)
22 2
To expose the container to pressures
higher than the allowed operating pressure
it is forbidden and dangerous!