HEATING SYSTEM HAVING HIGH-LOW TEMPERATURE LIMIT CONTROLLED AUXILIARY BOILER

摘要

An improvement is provided in a hot fluid conductor heating system having main boiler means with a given fluid capacity, main heating means having a given thermal capacity for heating the main boiler and thermostat means for actuating the main heating means. The improvement involves the provision of auxiliary boiler means having a fluid capacity less than the aforesaid given capacity. The auxiliary boiler means is connected to the main boiler means. Auxiliary heating means having a thermal capacity substantially less than the given thermal capacity are provided for heating the auxiliary boiler means. High-low temperature control means are connected to the auxiliary heating means and maintain a given temperature range of fluid conductor in the auxiliary and main boiler means. In a particular embodiment, the auxiliary boiler continuously maintains the temperature in both boilers within the range of 170 - 212.degree.F. As a result of the constantly maintained elevated water temperature in the main boiler, less time is required for the main boiler burner to heat up the system upon the demand of a room thermostat.