How to choose the CH & DHW system for a refurbished hous

[radoslav]

Hello everyone!Before everything , I hope my question can fit within the topics considered in this forum.I'm newly qualified plumber (not CORGI) and just started a job which supposed to be something like a plumber's mate.It turnes out though , as I will have a chance of taking a lot more responsibilities and I'd like to check for some help here.The job is in fully refurbished , 3 floor house.It has a huge kitchen , 3 rooms and a toilet on the first floor;a toilet between 1'st & 2'nd floor;3 rooms & 2 bathrooms on the second floor and 2 rooms on the third floor.The old system was gravity one with two 230L systerns.They were already removed and all the pipework , running to the 3'rd floor terminated , exept the CH flow & return.I'm looking for any idea of the type of the new system have to be installed.(I know this might sound quite unprofessional but I'm not doing this job on my own.It's just a matter of myself , wishing to get more knowledge of the possibilities of what I'm doing)
Thank you!

 

[Softus]

Your question is not very specific, so it's very difficult to answer.

If the job has been started and the old system removed, then surely someone already knows what system you're installing?

if so, then are you asking what the alternatives are?

 

[radoslav]

yeah,if you could suggest what system would be best for this type of house - this will answer my question.thanks

 

[SeanT]

Depends what they want to achieve, number of people likely to be living there etc. - is there a loft? I'd be tempted by a large conventional system with a fast recovery cylinder.

 

[Softus]

yeah,if you could suggest what system would be best for this type of house - this will answer my question.thanks

Oh, well, you should have said.

I suggest a suitably sized fossil-fuel burning heating appliance, coupled to either an open-vented store of hot water, or an unvented heat store, with either an open-vented or an unvented closed wet space heating system, possibly with wet underfloor heating. I recommend either copper or plastic pipework throughout, and I strongly recommend that the system is installed in accordance with the relevant manufacturers' instructions and the Water Regulations. If the water supply has a hardness exceeding 300ppm, then I suggest fitting either an ion-exchange water softener or a poly-phosphate based scale reducing device to discourage scaling of any heat exchangers in the system.