2. Safety valve
3. Circulation pump (separated with ball valves on each side so that it can be easily replaced if
necessary).
Expansion vessel is on the RETURN line in this case.
Expansion vessel and safety valve are connected following the rules described in the previous
chapters. For safe operation info on additional equipment such as expansion vessel and safety valve please
refer to manuals delivered with those products.
4.5
Fitting the boiler to an open central heating system.
The connecting scheme of an open central heating system is depicted on the figure.
When using open system on the FLOW line following elements are to be installed: safety
pipework for the open expansion vessel, boiler valve. On the RETURN line come safety return line of
the open expansion vessel, boiler valve and circulation pump valves.
10
Summary of Contents for TOBY 20 KW
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