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(11) | EP 2 012 070 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Combustion system |
| (57) A combustion system includes: a furnace housing (11) defining a combustion chamber
(111) therein and having a gas outlet (112) in fluid communication with the combustion
chamber (111); a plenum housing (61) surrounding and cooperating with the furnace
housing (11) to define a plenum chamber (601) therebetween, and having an air inlet
(611) and an air outlet (603) which are in fluid communication with the plenum chamber
(601); and a heat exchanger housing (51) disposed outwardly of the plenum housing
(61) and having an air inlet (501) in fluid communication with the air outlet (603)
of the plenum housing (61), an air outlet (502), a gas inlet (503) in fluid communication
with the gas outlet (112) of the furnace housing (11), and a gas outlet (504).
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