Ideal Flue Nozzle D300 170291

The Ideal 170291 is a D300 flue nozzle supplied for Ideal Commercial gas appliances. It forms part of the flue assembly, sitting at the point where flue products leave the appliance and are discharged through the terminal arrangement. The nozzle shapes and directs the flue gas path, so its condition has a direct bearing on combustion performance and on the readings an engineer takes during a service.

The part is listed under the Caradon code 170291 and carries the alternative numbers 82298917 and 1177516. It is a gas-carrying component and is fitted across a number of Ideal Commercial Viceroy models.

• Flue gas readings outside the expected range for the appliance, with combustion analysis that cannot be brought back into tolerance by normal setting up
• Visible corrosion, distortion or mechanical damage to the nozzle body or its seating
• Signs of leakage or staining around the flue connection point
• Unstable or noisy combustion at the burner that persists after the usual service checks
• Physical deterioration found during a routine service or flue inspection

• Check the appliance model and serial number against the compatibility list, as the same flue arrangement is used across several Viceroy variants
• Confirm the number on the existing component matches 170291, 82298917 or 1177516 before ordering
• Inspect the flue joint and any sealing components at the same time, as these are disturbed when the nozzle is removed
• This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.