Radijator Inženjering d.o.o, 36000 Kraljevo, Živojina Lazića - Solunca br.6, Srbija
tel. +381 36 399 140, fax. +381 36 399 150, http://www.radijator.rs
e-mail: radijator@radijator.rs
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This safety element also has a role of a limitator of temperature. Below it will be
marked with the abbreviation VTO.
In some extremely dangerous situations in the transformation of water into vapor is
such that the pressure safety valves are not sufficient to ensure the safety of the
hydraulic system. For this reason, the installation of VTO is mandatory. Depending on
the regulations of the countries in which the boiler is assembled, it is necessary to
install theVTO only for the determined higher powers or for each power of a boiler it
is the obligatory to instal the VTO.
Place the installation is shown in the Assembly diagram of boiler onto the installation
in Figure 4
The boiler is supplied with a copper coil so it is necessary to use the VTO with trhe
exchanger, as shown in Figure 4. Cold sanitary water is brought to the VTO. When the
VTO-probe has the information that the temperature is over 95 degrees the VTO is
opened and water flows through copper coil. After some time the temperature of water
in boiler returns to its normal state.
One connection of coil is used for VTO and the other for draining of water that has
passed through the coil. The choice of either connection; for VTO or for the discharge
is irrelevant. It is necessary to follow the installation instructions provided by the
manufacturer of the VTO.
Be sure to check up, in certain periods of time, the functioning of the VTO.
As stated above one end of the VTO is for the mounting on the exchanger of the boiler,
and the other is supplied with cold water under pressure. It is particularly important that
the water flow is unobstructed even when the electricity is switched off.
If it is impossible to provide the inflow of cold sanitary water at the time of
electricity switch off , the boiler must be connected onto the open system.
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