| 摘要 |
A device for heating a heat transfer fluid comprising a gas-fired boiler (1) and an accumulation tank (11), comprising, on a return duct (8b) from user devices (6, 7), a three-way valve (10) that is managed by an electronic control system, which comprises first and second heat transfer fluid temperature sensors (17, 18), installed on the return duct (8b) upstream of the valve (10) and on the output duct (13) from the tank (11), the three-way valve (10) being adapted to allow the access of the heat transfer fluid that arrives from the user devices (6, 7) to an exchanger (3) associated with the burner (2) of the boiler (1) directly and/or by means of a bypass line that passes through the accumulation tank (11).
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