Heat exchanger manifold

[girish]

I am changing heat exchanger manifold on my baxi main 30 he a system boiler. What kind of silicone sealent I should use between the heat exchanger and manifold… I have new manifold… cw all new gasket and rubber ring. Or do I need to use any kind of sealent ?

 

[muggles]

No sealant, just the gaskets

 

[girish]

Thank you. Muggles.
The boiler has come with the house and previous fitter have used a black sealent , I hope I can clean it properly as it seems hardened. Wish me luck.

 

[girish]

Another question mr Muggle
I want to drain the Heat exchanger… on main 30 HE system boiler. Am I correct to do is empty the pressurized vasel and use the draining plug on the manifold, instead of draining the whole system. I have megaflow for my hot water.

 

[girish]

Hi mr muggle
See the photos. As per your advice… it was heavily sealented… cleaned and tidly installed the new manifold…
Thanks