L
lame plumber
right team, I have been out to a leaking 35 kw boulter camrey, knackered hex, down to acidic water from borehole in all likeleyhood, seeing as pump engineer also appeared today to replace that side of their system.
So had a look round and found it was all underfloor heating dating back 20-25 years.
Initial query related to the flow and return coming off the boiler and being immediately linked by a pump, bit like where you would find a bypass in some setups. I presume this is instead of a low loss header set up to ensure even temps and flow around the boiler.
so had a chat with grant (putting in a vortex pro 26/35) about this and got told it would kill the condensate hex quickly. I understand that it would never get a temp drop so needs to go, but do i need a llh instead.
further along the flow goes to another pump for HW) then one for flow (in 35mm pipe) and then another pump on the return (in 35mm as well).
the heating is all underfloor, some 20 2 ports on the system, no obvious sign of any blending valves/mixer anywhere.
so it must be like walking on a rad when it is all on, but they are happy with it and dont want anything apart from a new boiler.
Right my main question is, will it be better to bin the llh/pump next to the boiler and rely on the other 3 pumps to do the circulation, at least there will be a partial temp drop over the flow n return so the boiler may even condense. or will a llh be required.
Need a bit of current thinking on llh and condensing boilers from the green machines out there.
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So had a look round and found it was all underfloor heating dating back 20-25 years.
Initial query related to the flow and return coming off the boiler and being immediately linked by a pump, bit like where you would find a bypass in some setups. I presume this is instead of a low loss header set up to ensure even temps and flow around the boiler.
so had a chat with grant (putting in a vortex pro 26/35) about this and got told it would kill the condensate hex quickly. I understand that it would never get a temp drop so needs to go, but do i need a llh instead.
further along the flow goes to another pump for HW) then one for flow (in 35mm pipe) and then another pump on the return (in 35mm as well).
the heating is all underfloor, some 20 2 ports on the system, no obvious sign of any blending valves/mixer anywhere.
so it must be like walking on a rad when it is all on, but they are happy with it and dont want anything apart from a new boiler.
Right my main question is, will it be better to bin the llh/pump next to the boiler and rely on the other 3 pumps to do the circulation, at least there will be a partial temp drop over the flow n return so the boiler may even condense. or will a llh be required.
Need a bit of current thinking on llh and condensing boilers from the green machines out there.
-+