Water heating apparatus, water and heating system and improved boiler

Abstract

A water heater apparatus is provided comprising a substantially vertical chamber having an upper end and lower end. A lower support plate is mounted inside the chamber near the lower end. A lower gas chamber is below the support plate and a water chamber above the support plate. An upper support plate is mounted inside the chamber near the upper end. An upper gas chamber is above the support plate and the water chamber is below the support plate. A plurality of substantially vertical tubes pass through the water chamber. Each tube is mounted to the upper and lower plate at the tube ends. The interior of each tube is in fluid communication with the respective gas chambers above and below the plates. A heat source is in the lower gas chamber for producing heated gases in the lower chamber. A water inlet means to the water chamber is provided for introducing water into the water chamber and a water outlet means for removing water from the water chamber. A heating and hot water system is also provided as well as an improved boiler which includes an auxiliary water heating apparatus. Both systems and the auxiliary water heating apparatus have as elements the water heater apparatus of this invention.