Underfloor heating for extension and existing house

[Dan Robinson]

What is a handsome attack?


I've had several anger attacks as I am in the office doing end of calender year paper work and have just found out how many customers have been sending payments for subtotals instead of totals.


FFS.

 

[Richardthe3rd]

I knew a controls engineer who insisted the boiler be at least 30% oversized on big ufh jobs. If not he just walked away.
Though most plumbers usually listened to him.
That way there was few complaints coming back to him about the property taking ages to heat.

That's common place for M&E consultants & CEs on commercial jobs. Give them their head & they'll have cable trays crossing the kitchen ceiling on a 2 Bed semi!!!

 

[Richardthe3rd]

I knew a controls engineer who insisted the boiler be at least 30% oversized on big ufh jobs. If not he just walked away.
Though most plumbers usually listened to him.
That way there was few complaints coming back to him about the property taking ages to heat.

Well I'm a Plumber & never agreed with a M&E engineer in my puff!! One struggled to understand how UFH was based on radiant heating & he worked for one of the biggest firms in the UK.

 

[Dan Robinson]

Tell me about it.

Serviced a boiler in the house of a customer.

This house is next to their new house.

Roughly the same size - albeit the new house has a swimming pool.


Boiler in old house - 42kW CDi FS.

Boiler in new house - 140kW Atag Q

Flecking huge 3 phase booster set.



God bless consultants.

 

[Richardthe3rd]

Tell me about it.

Serviced a boiler in the house of a customer.

This house is next to their new house.

Roughly the same size - albeit the new house has a swimming pool.


Boiler in old house - 42kW CDi FS.

Boiler in new house - 140kW Atag Q

Flecking huge 3 phase booster set.



God bless consultants.

Pffffftttttt!!.......I know Dan, all that hassle & 20 Hansome Attacks a day, life couldn't get much worse!!
What is a Hansome attack??

 

[ey143]

What is M&E?

 

[Richardthe3rd]

What is M&E?

A 'Mechanical & Electrical Consultant' or Engineer is generally employed by the Client on commercial jobs to design the Plumbing, Heating, Ventilation, Electrical, IT services etc etc.

 

[Dan Robinson]

The kind of person that thinks a 5 bed house needs this lot:







Is needed in a 5 bed house. . Shame I don't have any shots of the booster set. But it is something daft like 80l/min at 4 bar on a 1000 litre cistern fed from a 32mm supply. 0 Bar left in the main when the tank is drawn right down. Peak demand will drain it in 15 minutes or less

 

[Norcon]

I did this for a bloke with ufh and it took three days to get the home up to temp.




Only problem was I set the stat a wee bit high and nearly roasted the slabs. Silly me.

 

[ey143]

Dan

Sorry to ask this but as a lay person pls explain why a 5 bed house would not need that type of setup. Am I thinking that all those valves can control separate areas of the heatinting in that 5 bed house? Surely that's a good thing. How would you do not differently?

 

[Dan Robinson]

It doesn't need it at all really. That is the problem with M&E. Knowitalls.


Boiler is nearly twice the output required.

One pump (out of sight to the left of the 2) handles the pool plant. . The middle pump (the left one that you see) pumps to the underfloor heating manifolds (which have their own pumps).

The pump on the right drives the hot water cylinder in the other picture which is sited on the plant room's lower floor.

Out of shot is another ridiculously oversized pump for the secondary return.


This afternoon's project is to continue to lace up the control panel that smashed with the help of another forum member.


Either that or play lego star wars with the dude.