Do Zone valves have to be added?

[Petefinny]

Hi guys i have come to a gravity fed system and they want a new boiler, the system is not zoned off for the hot water central heating, is it current regs now that they have to be zoned? Thanks guys

 

[SimonJohns]

Yes new regs do say that.

But if your just swapping a boiler you don't have to upgrade the rest of the system if the customer can't afford it

Just make sure the boiler you get will work with gravity water

 

[Petefinny]

Its a heat only Main HE a, what do you do with the bench mark then?

 

[chris watkins]

Yes, Part L fully pumped only (& new boiler will almost certainly not work with gravity anyway), TRV,s on all the rads accept the room which has the room thermostat in it.

 

[Petefinny]

sorry its its a pumped open vented system not gravity fed

 

[SimonJohns]

Its a heat only Main HE a, what do you do with the bench mark then?

.... Say it's gravity hot water

 

[SimonJohns]

I think you should write your system description again

I'm lost

 

[Petefinny]

Ha Ha sorry guys, its a fully pumped system that go's to open vent , it has a main he A heat only installed

 

[SimonJohns]

You can still fit open vent

 

[Petefinny]

The landlord is saying he cant afford to have it zoned, but it has to be benchmarked and notified to the building authorities and if it is not zoned then its not up to current regs is it not?