Domestic hot water zone valve controlled external coil

Details Domestic hot water zone valve controlled external coil Domestic hot water zone valve controlled external coil

1985-01-29

1986-01-07

Bennett, Henry

Heating systems

Automatic control

Water

237 19, 126362, 236 20R, F24D 300

Patent

active

045629560

ABSTRACT:
A domestic hot water zone controlled external coil which takes heated water from the hot water outlet of a hydronic boiler and passes the hot water through a tankless coil before returning it to the hydronic boiler. Return water from the tankless coil is returned to the hydronic boiler by using the existing circulator on an existing operating heating zone, which saves electrical energy. An aquastat and a unique analysis and switching circuit is also provided.

REFERENCES:
patent: 2781174 (1957-02-01), Smith
patent: 4065054 (1977-12-01), Meier
patent: 4347972 (1982-09-01), Hillerstrom et al.

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