Underfloor heating Gurus

[bassmonster]

Hi all,
I'm just in the middle of fitting an intergas 36/40 boiler.

it's a s plan 3 zone system.

regarding underfloor heating, in the boiler manual, it has the following:

**Floor heating
For effective operation of the DHW supply any undesired circulation through the appliance as a result of a second pump in the CH circuit must be avoided. Connect the floor heating system in a hydraulically neutral manner to the appliance, or equip the CH circuit with an electric shut-off valve or check valve to prevent flow through the appliance when there is no CH request for heat**

what does this exactly mean? Am i to fit a check valve, if so where?

 

[ShaunCorbs]

think there on about when the hot water is being used is will heat the water in the heating and it will circulate via convection, and you cant have a underfloor heating pump just t into the flow i think is what there saying

tbh it would be best to phone them up and double check

 

[lame plumber]

only a thought but thats a big boiler to use on underfloor heating, omho

 

[bassmonster]

I'll be have a loft Extension in the future years so I thought I'd go for the big daddy [emoji4]

 

[bassmonster]

Thanks Shaun, I'll give intergas a call tomorrow.

 

[ShaunCorbs]

Thanks Shaun, I'll give intergas a call tomorrow.

you might need to put a low loss header in if they mean it like that but cant see why