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Sounds like he has confused the prv pipe for the condense outlet :lol: Who rated him? His mates probably, just goes to show you can't trust those sites

JG or Hep, not really much in it now that JG has the layflat pipe the difference in flexibility is minimal

not necessarily, all radiators will have a quoted output so just go by that. I always oversize verticals by 10-20% as they don't generally heat very evenly. The more "designer" it is , the more useless they seem to be at actually heating the room

if you have arcs of sludge in rads and hardened deposits inside pipework then you need a powerflush, as long as its done properly, good chemicals heated up past 60C will break down the sludge and make it easy to flush out. Mains flush is ok if the system is relatively clean but you want to...

i usually calculate head in minutes :P

x800 has form for killing pumps. I would recommend a good mains flush rinse, which will only take around 1-2hrs, just to flush out all the existing water and refill and inhibitor.

I would not fit an unvented cylinder with 18l/min incoming. Bare min 20l/min and 2 bar dynamic. You could look at options of improving the main, but now your talking about stuff you really need a site survey for options.. honestly though how often will you really need to use 2 showers at...

i mean the flow rate of the showers. or at least desired flow rate

I usually recommend a boiler that will supply around 75% of the flow rate in hot water. so in your instance something supplying 14l/min or less. we cannot tell you how many kw required for your showers as you didnt supply the flow rate.

keep your knickers on, most of your questions would be answered on honeywells website or in the manual

bet your glad you replied to this one dan :lol: its long haul :P

glad i didnt quote for that one ! more time saved

I wouldn't exactly call it competition :lol: I actually prefer it if customer has already had BG in.... how long warranty did they offer? what controls did they recommend? modulation? WC? No?? How much?? game over... :P :P :P

sure its not alpha?? never heard of adelphi and i have heard of most

should have an auto bypass not manual pump should be minimum 6m head on max 3 port valve would need to be 28mm with 28kw boiler but probably boiler is grossly oversized so downrate it to 15-18kw. as the cylinder has 28mm primaries it was probably specified for a gravity system and will have a...

blimey who let you out ! The voice of BG speaks again ! You have to be the worst advert for BG I've ever come across :lol:

+1

I've been to 2 people to quote recently where BG have quoted, one was to replace a 12kw heat only boiler like for like in same location. BG quoted £3750, I told the customer that she should keep her Ultimate FF as it was a good boiler and it wasnt at risk just cos the electrical cover was a bit...