Andrews Pipe Return Manifold 28mm Twin Heat Exchanger 7709336

The Andrews 7709336 is a 28 mm return manifold pipe for the twin heat exchanger assembly. It forms part of the return pipework on Andrews water heaters and is supplied as a manufacturer part. The manifold connects the return side of the twin heat exchanger circuit.

• Visible leaks or weeping at the manifold joints or pipe connections
• Corrosion, pitting or surface deterioration on the pipework
• Scale or debris build-up restricting flow through the manifold
• Reduced hot water output or uneven heat exchange performance
• Cracks or deformation in the manifold pipe

• Confirm your appliance model against the fit list above
• Check that the existing manifold is 28 mm and serves a twin heat exchanger
• Verify the part number 7709336 against the number on the existing component or the manufacturer's parts list
• Water heater work should be carried out by a competent heating engineer