Worcester Greenstar CDi Boiler DHW 20 Plate Heat Exchanger 87161082120

Product Overview

The Worcester Greenstar Domestic Hot Water (DHW) 20 Plate Heat Exchanger (Part Number: 87161082120) is a replacement plate heat exchanger designed for use within selected Worcester Bosch Greenstar boiler systems.

The DHW plate heat exchanger transfers heat from the boiler's primary heating circuit to the domestic hot water supply without allowing the two water circuits to mix.

Its function is to support efficient heat transfer, allowing the boiler to provide hot water when required.

ℹ️ Product Condition:

This product may be available in New o Refurbished condition. Please select the required option when ordering.

Technical Insight & Common Failure Symptoms

The DHW plate heat exchanger uses a series of metal plates to transfer heat between the primary heating water and the domestic hot water circuit.

Over time, heat exchanger performance can be affected by limescale deposits, internal restrictions, corrosion or leakage.

Possible symptoms that may require investigation of the heat exchanger or associated components include:

• Reduced domestic hot water temperature

• Fluctuating hot water temperatures

• Reduced hot water flow caused by internal restrictions

• Hot water taking longer than expected to reach the required temperature

• Signs of leakage around the heat exchanger

• Reduced heat transfer performance

These symptoms do not necessarily confirm a faulty plate heat exchanger, as similar problems may be caused by sensors, flow restrictions, diverter valves or other boiler components. Correct diagnosis should be carried out before replacement.

Safety Advice

Boiler plate heat exchangers and associated hydraulic components should only be inspected, removed or installed by a suitably qualified and competent heating engineer.

Always isolate the appliance and relevant water supplies before carrying out any work. Follow the manufacturer's installation and servicing instructions, and ensure that all required pressure, leakage and operational safety checks are completed before the boiler is returned to service.