Stoves and furnaces – Hot-air furnaces – Combined with boiler
Patent
1993-12-15
1994-11-08
Yeung, James C.
Stoves and furnaces
Hot-air furnaces
Combined with boiler
237 19, F24D 900
Patent
active
053617517
ABSTRACT:
A combination hot air furnace and hot water heater (10) having a furnace (20), a gas flow control valve (40) and a hot water heater (60) constructed as an integral assembly. Furnace (20) has furnace gas burner (33) supported below furnace heat exchanger (32). Furnace heat exchanger (32) is supported within conduit (24) through which air is passed for heating. Gas flow control valve (40) is sealingly mounted upon the top outlet (36) of furnace heat exchanger (32), and may selectively direct the heat of combustion from furnace gas burner (33) toward water tank (62) for heating water within the water tank. Gas flow control valve (40) may also seal off furnace heat exchanger (32) from the flow control valve and draw outside combustion air into valve body (42) through side wall opening (48) for providing combustion air for water tank gas burner (64).
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SABH Worldwide Water Heater Group, SABH Comfort Systems, Jan. 1993, pp. 2-4.
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