Raypak 105A/105B/155A Heat Exchanger Bolt Kit (004889F)

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The Raypak 105A/105B/155A Heat Exchanger Bolt Kit is a replacement heat exchanger assembly for compatible Raypak heater models. The heat exchanger is one of the most important part s of the heater, transferring heat from the combustion side into the pool or spa water path. Part 004889F is intended for repair situations where the existing exchanger is leaking, heavily scaled, cracked, corroded, or no longer able to maintain efficient heat transfer.This heater assembly should be selected only after verifying the exact Raypak model and current exchanger style, since headers, tube bundles, gasket locations, and plumbing alignment can vary by heater family and size. Replacing a heat exchanger is a major heater repair, so the installation should include careful inspection of water chemistry history, bypass operation, flow rate, header condition, and all sealing surfaces to help prevent repeat failure. Replacement heater heat exchanger assembly for the Raypak application listed Transfers heater output into the pool or spa water circuit when installed in the correct model Used when leaks, freeze damage, corrosion, scaling, or heat transfer problems require exchanger replacement Requires careful matching to heater size, header style, model series, and part number Professional installation is recommended due to water, combustion, pressure, and sealing requirements Show more