In/Out Manifold Header for HiNRG 400 and some Jacuzzi gas heaters. This suits MK 2 or Series 2 Heaters. Suits Astralpool HiNRG 400 and Jacuzzi J-HN400C. Note new style manifolds have relocated Hi-Limit switches from early models, and some now use a copper pressure switch tube. They retrofit older models and should be installed by a qualified person.
Part number 34 in diagram below.
727260547 replaces part number 726054 and 677547
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