Raypak 010060F Copper Tube Bundle for 266/266A, 266L/267A Pool Heaters (Polymer Headers)

This tube bundle is the fin tube core of the heat exchanger: the tubes the pool water flows through between the inlet/outlet header and the return header. Raypak lists it separately from the two headers, so it can be replaced on its own.

Fit notes:

• Raypak 266A heaters, digital and millivolt, with polymer headers and a copper heat exchanger (model number ending in C), built from 10/2004.
• Raypak 267A digital Low NOx heaters with polymer headers and a copper heat exchanger (residential models built 2004 to 2023).
• Not for heaters with a cupronickel heat exchanger (model number ending in X); those take a cupronickel tube bundle (014931F on units built from 7/2013).
• Not for ASME heaters with bronze or cast-iron headers, which use a different tube bundle.

Included:

• Supplied with the heat exchanger baffles, a flange nut kit and 2 header O-ring gaskets. Raypak also lists these on their own: baffle 005261F, flange nut kit 008259F, O-ring gaskets 006713F (set of 2).
• The inlet/outlet header and the return header are separate parts and are not included.

Good to know:

• Raypak warns that the water flow or water chemistry problem that ruined a tube bundle has very likely damaged the bypass valve and the Unitherm Governor as well. It recommends replacing the Unitherm Governor and inspecting the bypass assembly at the same time.
• Copper and cupronickel tube bundles are not interchangeable. Match the bundle to the heater's model suffix.
• Replacing a tube bundle means taking the heat exchanger out of a gas heater; have a qualified service technician do the work.