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When establishing pipeline connection, follow the installation order of the fittings
according to Figure 2 as the correct operation of the equipment depends on this. The
combined safety valve has to be connected to the cold water branch respecting the flow
direction marked by an arrow. The equipment has to be provided with a safety valve
controlled for maximum 0.7 MPa operating pressure.
[The safety valve has to be mounted directly in front of the storage tank, onto the
coldwater branch, in a frost-free environment. The safety valve is an accessory of the
equipment.
Before mounting the valve, the coldwater pipe has to be flushed thoroughly, in order to
avoid any damage caused by a possible pollution. The combined safety valve contains a
one-way valve therefore it is not necessary to mount in a separate one-way valve. During
heating, leakage of extending water has to appear on the outlet tube of the combined
safety valve. When mounting, check if leakage is visible.
If the water pressure in the system exceeds the value of 0.6 MPa even temporarily, a
pressure reducing valve has to be mounted in front of the hot water storage tank, in the
place as indicated in Figures 1.b and 2.b. If this is missing, at the above mentioned
pressure, the safety valve will be leaking outside heating as well. The pressure reducing
valve has to be purchased and mounted by the customer. A closing valve has to be
mounted in the coldwater pipe leading to the storage tank in front of the fittings
(combined safety valve, one-way valve, etc.). With the help of this, the hot water storage
tank and the water pipe fittings can be separated from the pipeline (in the case of failure
or other maintenance works).
OPERATION AND MAINTENANCE
If you observe water leakage or other abnormality from the inside of the storage tank,
immediately separate the equipment from the pipeline with the help of the closing valve.
IN THE CASE OF INDIRECT HEATING, PROTECTION AGAINST OVERHEATING HAS TO BE PROVIDED BY
THE INDIRECT HEATING EQUIPMENT.
Active anode
In addition to the enamel coating, the tank of the hot water storage tank is protected by an
anode as well against corrosion therefore it is important that the tank should always
contain an active anode of an appropriate size. Therefore the state of active anode has to
be revised every two years. This shall be a pre-condition of the guarantee for the tank (see
warranty certificate). If the anode diameter shrinks to about 10 mm, it has to be replaced.
It is extremely important that the active anode should be in a proper contact with the tank.
Therefore when a new anode is mounted or after other repair works, the link between the
active anode and the earthing screw has to be implemented in a way that provides a
contact of electrically proper conduction.]
Scale removal
Depending on the quality and quantity of the used water, scale deposition may occur on
the heat exchanger and the tank wall. The deposited scale decreases the efficiency of
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