Integral liquid-backed gas-fired space heating and hot water system.

摘要

Domestic tankless water heating is incorporated into a space heating system (10). The space heating system (10) includes a fluid flow loop with a fluid pump (16) for circulating the fluid in the loop and a remote fan coil (14) for transferring heat to the air in the space (11) to be heated. The heat source is an infrared burner (12) and the heating of the domestic water may be either directly by the burner (12) through radiative and convective heat exchange in an open loop system or by heat exchange in a tube-in-tube heat exchanger which is in series with the fan coil in a closed loop system.