| 摘要 |
601752 Disclosed is a heat exchanger apparatus particularly useful for pool and spa heaters. The apparatus has a heat exchange module (105A, 105B) having a plurality of heat exchange elements extending across a passage, the passage being arranged to convey a first fluid past and about the heat exchanger elements. The apparatus has one or more return headers (34) adapted to be selectively mounted to the module (105A, 105B) either for directing a second fluid in turn through any adjacent pair of heat exchange elements, or for directing a second fluid from one heat exchange element of the module (105A, 105B) to a heat exchange element of a similar module (105A, 105B) when said module (105A, 105B) is coupled to said similar module (105A, 105B). |
