Sime Return Manifold 6286001

The Sime return manifold is the manifold assembly that collects returning heating water and directs it back into the boiler circuit. It is manufactured by Sime under part number 6286001 and is used across the Superior range of gas boilers. The manifold forms part of the hydraulic side of the appliance, so its condition affects flow, pressure and heat distribution around the system.

• Visible water weeping or staining around the manifold body or its connections
• System pressure dropping repeatedly with no obvious leak elsewhere on the installation
• Corrosion, scale or sludge build-up restricting flow through the manifold
• Uneven heat output or poor circulation across the heating circuit
• Kettling or flow noise traced back to the manifold area

• Confirm the boiler model and GC number against the fitment list and the appliance data badge
• Check the existing manifold part number, where legible, against 6286001
• Inspect the manifold connections and seals, as these may also need attention when the part is changed
• Confirm whether the appliance is the MKII or CI variant before ordering