Mass-attenuated thermosensitive damper for sealed direct-vent gas fireplace
Abstract:
A separate heat absorbing mass is secured in co-planar abutment with a bimetal strip controlling a fireplace damper to absorb heat from the flue gases. The mass transfers heat to the bimetal strip during the OFF cycle thereby delaying the opening of the damper and increasing the heat retention and efficiency of the fireplace.
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