An air duct (1) is laid in the floor with outlets (2, 3, 4) arranged at certain points and covered by gratings. Heating batteries (9) are located adjacent to the outlets, and these receive heat through flow (11) and return (12) pipes from a central boiler (10). Air from the church is drawn into the duct through a central intake (6) and passed through a suction channel (7) to a central fan (5) which is located next to a cold outside air intake (8). ADVANTAGE - Has the same efficiency and effectiveness as a heat station system.
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