Ideal Orifice Kit 4.75 30kW 176368

The Ideal 176368 is an orifice kit sized at 4.75 and intended for 30 kW appliances in the Ideal Commercial range. It is supplied as part of the Ideal Spares programme and sits in the gas train, where the orifice meters the flow of gas reaching the burner. Holding the correct bore size keeps combustion within the parameters the appliance was set up and certified against, so output, flame stability and flue gas readings stay as designed.

• Combustion readings drift outside the values expected for the appliance, with CO or CO2 figures that cannot be brought back by adjustment alone.
• The burner lights but the flame is unstable, lifts, or burns with an altered appearance compared with a correctly set appliance.
• The appliance struggles to reach its rated 30 kW output, or heat input measured at the meter does not match the data plate.
• Sooting, discolouration or deposits around the burner area suggest the gas/air balance has moved away from the design point.
• The existing orifice is visibly blocked, damaged or has been drilled or altered at some point in its life.

• Confirm the appliance model and its GC number against the compatibility list, as the 4.75 orifice is matched to the 30 kW variant.
• Check the number on the existing component and compare it with 176368 and the alternative number 1782230 before ordering.
• Have the appliance recommissioned and combustion-analysed after fitting, since any change to the gas train affects the set-up.