HEAT EXCHANGER
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Heat exchanger is the component which enables transferring the energy produced by the burning of
the gas to the water circuit. Different heat exchangers are used in bithermic (24 kW) and
monothermic (24 / 28 kW) models. In bithermic heat exchangers which have two water inlets and
two water outlets, both central heating and domestic hot water circuits are heated. In monothermic
types, the exchanger has only one water inlet and one water outlet and only the central heating
circuit is heated. In monothermic types, domestic hot water circuit is heated by a second exchanger
(plate-heat exchanger).
In both heat exchangers, there is a manual air vent on central heating inlet.
Table 7 Heat Exchanger
Bithermic heat exchanger (24 kW)
Central heating inlet & outlet connections G ¾” (External thread)
Domestic hot water inlet & outlet connections G ½” (External thread)
Monothermic heat exchanger (24 kW)
Water inlet & outlet connections G ¾” (External thread)
Monothermic heat exchanger (28 kW)
Water inlet & outlet connections G ¾” (External thread)
fig. 4a Bithermic Heat Exchanger
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