fig. 4b Monothermic Heat Exchanger
HYDROBLOCK
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Two different types of hydroblocks are used in bithermic and monothermic types. Hydroblock
consists of different components depending on the boiler model. The bithermic hydroblock has
pump, pressure relief valve (3 bar), discharge tap, filling tap, water pressure switch and water flow
sensor on it. The monothermic hydroblock has pump, pressure relief valve (3 bar), discharge tap,
filling tap, water pressure switch, plate heat-exchanger, water flow sensor, domestic hot water
(DHW) sensor, central heating (CH) sensor and 3 way electric valve on it. On both hydroblocks,
inlet and outlet manifolds are connected by a by-pass pipe.
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