Solid Service | USPCA
By the function of sanitary water boilers are single circuit and double-circuit. Double-circuit boilers provide hot water heating without additional external devices include a flow-through heat exchanger or hot water boiler built.
View original post here:
Solid Service | USPCA
Tags: exchanger-or-hot, external-devices, function, heat-exchanger, hot-water, provide-hot, sanitary-water, the-function, water-heating