Ok cheers lads, im sort of getting it, i will be putting a Worcester 28i or 30si in as the customer likes his worcester's apparently, so i will be pricing one of them, ill see the flow rate difference and see if there is any en suites etc and go from there, i went out tonight to look at BBU as it isnt igniting and it is the electronic version so ill call Baxi technical tomoz and see what they suggest and get it running for him over the xmas period but he wants it gone early next year and replacing with a combi hence my post and i just said yeah no probs, not realising what was involved as i havent done one before but i cant turn work down and advice is the best form training in my opinion.
I was working in liverpool for 5 years but very rare i would come across conventional systems or BBU's so it was merely combi to combi or on the servicing & brekdown side of things where i was in my comfort zone, i have now moved back to my home territory in wales and seems like there is alot of the older systems with custmers wanting upgrades which are all new to me so it wont be the first time ill be on asking for good advice.