Heating system

Liquid heaters and vaporizers – Automatic control of fluid fuel and water – Once through

Patent

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Details

237 8R, 236 1EA, F22D 3742

Patent

active

046387676

ABSTRACT:
The invention provides a control system for a set up including a plurality of boilers, in which each boiler is associated with a control valve which permits or prevents flow through the boiler between common flow and return mains and in which each control valve is connected with a corresponding temperature sensor, whereby the control valves are temperature switched. This compares to conventional practice in multiple boilers set-ups where the said valves are time/delay switched.

REFERENCES:
patent: 1930455 (1933-10-01), Hannum
patent: 4534321 (1985-08-01), Rydborn

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