Title: Small building heating system

Abstract: A heater unit and draft control adapted to be connected to an existing solid, liquid or gas fueled heating furnace includes a heat exchanger having a stack gas passage connected in series to a stack from the furnace and a blower which forces air through the heat exchanger and into the plenum of the furnace. A stack cooler and/or draft control includes a pipe extending from outside of the house into the exit portion of the stack gas passage with an adjustable damper therein.

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Inventors: Huie, Edwin C. (Portland, OR, US)

Application Number: 546340
Filing Date: 1975-02-03
Publication_date: 1976-03-16
Assignee:
Primary Class(es): 237/55 126/116R, 165/901, 454/213
Other Classes:
US Patent Ref:

1953302	Apr, 1934	Johnston	126/117.
2252784	Aug, 1941	Powers	126/99.
2362940	Nov, 1944	Skerr	165/39.
2468909	May, 1949	Yeager et al.	126/110.
2711683	Jun, 1955	Ryder	237/55.
2715018	Aug, 1955	Lapple et al.	165/111.
2764391	Sep, 1956	Pullen	165/122.
3813039	May, 1974	Wells	126/110.

Other Refs:
Primary Examiner: Wayner, William E.
Assistant Examiner: Tapolcai, Jr., William E.
Attorney: Klarquist, Sparkman, Campbell, Leigh, Hall & Whinston