boiler blow off

[sparky]

Hi everyone
Recent site has boiler discharge internally into a soil stack. No pipes allowed on show on exterior of building! Approved by building control, but 15mm copper into plastic tundish solvent weld pipe into hepvo valve into stack all solvent weld. Sound ok?

 

[jpm]

into tundish 15 to at least 22,but better 28 sounds good to me.

 

[sparky]

Cheers, any thoughts on the solvent weld as to if boiler blows off at temperature?

 

[peteh20]

how are the smells from the drains not coming into the property???????????

just seeen the hep20 vac trap im blind