Navien Pipe S.H Return 30013570A

The Navien 30013570A is a secondary heating return pipe used within the NCB-CE ERP boiler range. It forms part of the return circuit that carries water back through the appliance during heating operation. The part is supplied by Navien for both system and combination models in this family.

• Visible weeping, damp staining or residue at the pipe joints and unions
• Corrosion, pitting or surface discolouration on the pipe
• Gradual loss of system pressure that cannot be traced to another component
• Restricted flow or uneven heating suggesting a blocked or scaled return pipe
• Kettling or unusual noise from the boiler heat exchanger

• Confirm the boiler model and serial number against the fit list above
• Check that the part number 30013570A matches the pipe being removed
• Identify whether the appliance is the system or combination variant of the NCB-CE range
• Inspect the associated seals, washers and unions for condition before refitting