1) Boiler TOBY B 2) Boiler valve 3) Automatic air vent 4) Termo-manometer 5) Safety valve 6) Mix valve
7) Expansion vessel 8) Circulation pump 9) Dirt catcher
The safety valve (with preset 2,5 bar threshold) should be mounted closed to the boiler (Po-
sition 5 at the image above).
It is essential to have a thermometer and a manometer installed to the system (Position 4 on
upper scheme)
It is recommended to install a dirt catcher and also an anticondensation valve on the return
line. (3-way mixing valve).
CLosed expansion vessel (position 7) should be mounted close to the boiler. Vessel must be
positioned so that its membrane is in horizontal position. he volume od the vessel is calculated using the
ratio 1 KW :1 l.
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