Freeze protected condensate system

    公开(公告)号:US11262083B2

    公开(公告)日:2022-03-01

    申请号:US17004232

    申请日:2020-08-27

    Abstract: A condensate trap for a furnace system includes a trap inlet configured to receive combusted gases, a condensate chamber coupled to the trap inlet and configured to trap condensate, a trap outlet coupled to the condensate chamber and configured to exhaust the combusted gases, a header box inlet configured to receive condensate from a header box, and a condensate outlet configured to drain condensate from the condensate chamber. Combusted gas that passes through the condensate trap provides heat to condensate within the condensate trap to thaw frozen condensate or to prevent condensate from freezing.

    Method and system for vented rollout switch

    公开(公告)号:US11125464B2

    公开(公告)日:2021-09-21

    申请号:US16389017

    申请日:2019-04-19

    Abstract: A furnace includes a gas burner exposed to a heat-exchange tube. An inducer is fluidly coupled to the heat-exchange tube and configured to induce draft air through the heat-exchange tube. A regulator is fluidly coupled to the gas burner. A rollout shield is disposed adjacent to the gas burner. A rollout switch is disposed in the rollout shield. The rollout switch is electrically coupled to the regulator. At least one vent is formed through the rollout shield adjacent to the rollout switch. The vent provides a path for a rollout flame to the rollout switch. The at least one vent is disposed on at least two sides of the rollout switch.

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