Abstract: A water heater includes an outer casing defining a longitudinal axis, an axial direction being defined as extending along the longitudinal axis. The water heater further includes a combustor for production of hot flue gases, a primary heat exchanger including a tube positioned within the outer casing, and a secondary heat exchanger including a plurality of plates coupled together by brazing to form a brazed plate heat exchanger. The secondary heat exchanger includes a first set of passages defined between the plates, and a second set of passages defined between the plates and alternating with the first set of passages in the axial direction. The primary and secondary heat exchangers are in fluid communication such that the flue gases flow through the second set of passages before being exhausted, and water to be heated flows through the first set of passages to a delivery point for use upon demand.

Abstract: A water heater includes an outer casing defining a longitudinal axis, an axial direction being defined as extending along the longitudinal axis. The water heater further includes a combustor for production of hot flue gases, a primary heat exchanger including a tube positioned within the outer casing, and a secondary heat exchanger including a plurality of plates coupled together by brazing to form a brazed plate heat exchanger. The secondary heat exchanger includes a first set of passages defined between the plates, and a second set of passages defined between the plates and alternating with the first set of passages in the axial direction. The primary and secondary heat exchangers are in fluid communication such that the flue gases flow through the second set of passages before being exhausted, and water to be heated flows through the first set of passages to a delivery point for use upon demand.

Abstract: A method and apparatus for sealing a combustion intake for a boiler from inside air is provided. A method and apparatus for providing a transition piece for venting fresh air to and combusted gas away from a boiler is also provided. A method of connecting a transition piece to PVC, ABS OR CPVC ductwork is also provided.

Abstract: A small and compact boiler for providing hot water for indoor heating and domestic hot water and method of operation are provided. The boiler includes a three way valve configured to circulate boiler water through a heating circuit when indoor heat is required, and bypass the heating circuit and circulate the boiler water through the heat exchanger to enable production of domestic hot water.

Abstract: A method and apparatus for sealing a combustion intake for a boiler from inside air is provided. A method and apparatus for providing a transition piece for venting fresh air to and combusted gas away from a boiler is also provided. A method of connecting a transition piece to PVC, ABS OR CPVC ductwork is also provided.

Abstract: A method and apparatus for providing an electronic controller for a boiler is provided. A method and apparatus for providing a boiler with consolidated electronic connections is also provided.

Abstract: A method and apparatus for connecting two pipe ends is provided. The apparatus includes a housing, a first chamber contained within the housing and configured to allow a pipe to slide through it, a second chamber contained within the housing and configured to allow an end of a pipe to side through it, and a third chamber contained within the housing and configured to attach to an end of a second pipe. The method includes sliding a first pipe through a slip joint adapter, positioning the slip joint adapter to the desired location on the first pipe; and attaching the slip joint adapter to an end of a second pipe.

Abstract: A method and apparatus for sealing a combustion intake for a boiler from inside air is provided. A method and apparatus for providing a transition piece for venting fresh air to and combusted air away from a boiler is also provided. A method of connecting a transition piece to PVC, ABS OR CPVC ductwork is also provided.

Abstract: A method and apparatus for providing an electronic controller for a boiler is provided. A method and apparatus for providing a boiler with consolidated electronic connections is also provided.

Abstract: A method and apparatus for sealing a combustion intake for a boiler from inside air is provided. A method and apparatus for providing a transition piece for venting fresh air to and combusted air away from a boiler is also provided. A method of connecting a transition piece to PVC, ABS OR CPVC ductwork is also provided.

Abstract: A small and compact boiler for providing hot water for indoor heating and domestic hot water and method of operation are provided. The boiler includes a three way valve configured to circulate boiler water through a heating circuit when indoor heat is required, and bypass the heating circuit and circulate the boiler water through the heat exchanger to enable production of domestic hot water.