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My friend is organising for new heating pipework in a church (replacing old single pipe cast iron pipework). The plumber is proposing carbon steel pipes, this sound expensive, but it may be the norm? Obviously they don't want to be copper as the majority of pipes will be visible. Also are...

Just found out Maincor is suitable for this. The pipework has the aluminium barrier

Which manufacturer pipework would you recommend, have you ever installed a secondary loop in commercial premises with plastic?

What would you class as a commercial ring main?

Thanks, I saw this line (below) in an installation instruction manual, what is classed as a 'commercial ring main'? Does that refer to systems which operate at much higher circulating temperatures than that of an unvented hot water cylinder i.e. Megaflo. ''Polybutylene pipework is not...

Thanks. Can you use plastic barrier pipe for a continuous hot water circulation loop? Are you aware of any of the plastic pipework manufacturers that allow this?

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I need to ask (or rather get the plumber) to install a domestic hot water circulation loop across a room (about 20m). The room is yet to be built and will have no roof space to run the circuit in. It must go in the floor. It could go within the floor screed depth, the plumber mentioned...

Hello all, I have a relatively new system installed and there is a very loud over-motorised sound coming out of the boiler room however when one of the boilers gets turn off then back on it seems to dissipate. There are two boilers linked together (2 x Vaillant EcoTec 24's). Does anyone...

Thanks, I thought 'non-maintained' were lights which were 'off' all the time and only came on during a fire alarm situation, i.e. EXIT signs over doors

What is the correct definition for an emergency light fitting which is an emergency version of a standard fitting, it needs to come on and go off with the rest but also come on or stay on in the event of a fire. Am I correct in saying this is a 'maintained' emergency light ?

OK thanks

What are the rules and regs regarding dropping heating flow and return / hot and cold water services pipework behind stud walls. Firstly, can you do it? and secondly if you can, does there need to be any form of protection of identification foil so the routes can be picked up if someone was...

Thanks, do you know a reputable Thermal Heatstore manufacturer which you have used before?

Thanks for the replies, will terminating the boiler and cylinder discharge pipe via a tundish into the tank comply with regs?

If a condensing boiler is to be installed in a cellar with no outside wall available I know there are condensate pumps available (by Grundfos or Saniflo etc.) to lift the condensate to above, but my question is, what about the safety discharge pipe from the boiler and cylinder? Can they also...

Thanks RichieHoneybucket - I believe the plumber has a good experience with this type of project, and will size the pipework adequately. There is one boiler doing the heating and hot water, the boiler is going to be oversized to allow a fast recovery time i.e. dedicating say half the boiler...

There is one basin in each en-suite, but I suppose this wouldn't be in use whilst the shower is in use. 2 x 400 litres cylinders (800 litres) wouldn't be far out then 36 l/person x 20 people = 720 litre

What capacity indirect hot water cylinder/s would be required to serve 15 showers (i believe the showers consume about 12 litres every minute - hot and cold mixed). There would be 20 people at any one time that could use the showers, i.e. most rooms have a shower en-suite. I just want to...

OK thanks, thats me told...