Our boiler (see above picture) which I've identified using the GC Nr needs a new main heat exchanger. Advised by heating engineer, excess heat over time has caused damage to the outer aluminium case.
I'm assembling all the relevant parts he requires for this procedure prior to booking him for another visit. The heat exchanger is proving to be problematic as there are two types (visibly almost identical)
As you can see from the above picture it's either Heat Exchanger Old Sump (Before FD887) or Heat Exchanger New Sump (After FD888). So it seems the only difference is a design change to the clip on black plastic sump assembly.
Heat Exchanger Old Sump (Before FD887) - Part No 87161157400
Heat Exchanger New Sump (After FD888) - Part No 87161157410
According to Worcester website (see above picture) the data badge pre July 2010 (boiler commissioned Sept 2009) provides the FD number as the 11th, 12th, 13th digits.
Therefore glancing at the serial number (see above picture) you'd expect this to be 989. Hence Heat Exchanger New Sump (After FD888) would be the correct part to order.
Can someone who is familiar with these boilers just confirm what I've stated is correct. I'd just rather be 100% sure, not order the wrong part and end up having to pay the engineer for a wasted trip.
Any responses much appreciated