Ideal Plate Heat Exchanger HIU 16 Plates Long 178071

The Ideal 178071 is a plate heat exchanger (PHE) designed for use in Ideal heat interface units (HIUs). It features 16 plates in a long configuration. In an HIU, the plate heat exchanger transfers heat from the primary circuit to the secondary circuit, providing domestic hot water and heating within a property. The long version may have a different plate pack length compared to standard variants, affecting flow characteristics and heat transfer capacity. Plate heat exchangers are compact and efficient, isolating the primary and secondary water circuits while allowing heat transfer.

• Reduced hot water temperature or inconsistent heating.
• Visible leaks or weeping from the plate heat exchanger.
• Scale or debris build-up causing restricted flow.
• Pressure loss between the primary and secondary circuits.
• Unusual noises from the HIU during operation.
• Frequent lockouts or error codes related to heat transfer.

• Confirm your appliance model and serial number to ensure compatibility.
• Check the part number 178071 against your existing component.
• New gaskets or seals may be required for a complete repair; inspect the existing ones.
• Inspect the new plate heat exchanger for any transit damage before installation.
• Ensure the system is depressurised and drained before removal.
• This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.