By the time you talk of insets your internal bore is around 10mm
yes and no
if there happy with staggering the times then aslong as heatings over the hot water requirement your fine
but if they dont want to...
i would say try a different one ;) just worked it out old school and its 300w out on a single rad
how many rads? seams low only 8 2kw rads
you done a room to room heat loss? and not just measured the existing rads?
i would say your shy on your heat loss calcs
unvented cylinders require 15-20kw on there own
compression male iron
soldered tee to 1/8th
pressure test point 1/8th
can we have your reg number please
never mind found it
are you gas safe?
first thing you can do to help is, is to measure the incoming water supply flow and pressure
are the two digi showers pumped ? as if this is the case you either need to keep with your set up eg tank and cylinder or change the units
have a look at dab pumps
them ones i linked need some lube to push them on :D
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