Grant Turbulator 360mm VBS05

The Grant Turbulator is a 360mm baffle that sits inside the heat exchanger flueways of Grant oil-fired condensing boilers. It is manufactured by Grant and supplied under part number VBS05, with the alternative number 2160490. Its role is to break up and slow the passage of hot flue gases so that more heat is transferred into the water circuit before the gases leave the appliance.

• Falling boiler efficiency with no obvious change in burner settings
• Higher than expected flue gas temperatures on a combustion analysis
• Soot or carbon deposits building up on the baffle surfaces
• Rattling or movement of loose baffles inside the heat exchanger
• Visible corrosion, distortion or break-up of the baffle when the flueway is inspected

• Confirm the boiler model and serial number against the compatibility list, as baffle length and quantity vary between appliances.
• Check the existing baffle length and count before ordering, since more than one turbulator may be fitted per boiler.
• Have the alternative number 2160490 to hand if your records list the part under a different reference.
• Oil-fired appliance work should be carried out by a competent engineer, with the burner and combustion settings checked after any baffle replacement.