new boiler with external condensate pipe - does this need lagging?

rockin_plumber

unclebulgaria wrote: »

Is that right? Perhaps you should tell the condense water that its not supposed to freeze?

It sonly as acidic as tomato ketchup.
And it certainly will freeze if installed incorrectly.

MoneyMate

unclebulgaria wrote: »

Is that right? Perhaps you should tell the condense water that its not supposed to freeze?

Dear condense water your not supposed to freeze ? :beer:

littlerock

Strange then that the installers did not lag it as they are top local approved Worcester installers and the quote said the condensate pipe would be installed according to manufacturers instructions. I have texted them to ask about insulation but they have not replied yet.

rockin_plumber

It may well have been installed to manufacturers instructions, this is from the Worcester Greenstar CDI Manual Page 12



Pipe work length should be kept to a minimum and the route as vertical as possible.


Where pipe work is subjected to extreme cold or wind chill, a weather proof insulation should be used.


Alternatively the condensate pipework could be increased to a minimum diameter of 32 mm without the requirement to insulate.

st999

This is how my neighbours was fitted



http://tinypic.com/r/2506kxc/8

missbiggles1

st999 wrote: »

This is how my neighbours was fitted



http://tinypic.com/r/2506kxc/8

Mine looks nothing like that!

littlerock

my boiler is quite high up on the wall and the pipe comes out of the back of the boiler and through a hole to external wall at that point and then runs to about 1 foot above ground then turns to run into the drain.

This photo looks as though boiler is much lower down or pipe has been run down wall inside and hole drilled to let it to outside. The brickwork suggests newish house. mine is victorian with very hard bricks. also could not put outlet so low down on mine as boiler is wall hung above kitchen units and no access behind them .

However the Worcester installation instructions quoted indicate that if a 32cm pipe is used it will not freezeand not need lagging . I will check what my pipe is. Meanwhile anyone care to comment from experience if larger diameter pipe prevents freezing?

rockin_plumber

A larger bore pipe is less likely to freeze, it really depends how exposed it is, if it has been installed to manufacturers instructions the installer has done their job correctly.


If you look back to post #15 it is taken from page 12 of the instructions.


If it hasn't been installed to manufacturers it should have not been commissioned until it was.


There is normally a box on the benchmark certificate to tick, to confirm the condensate pipe has been installed correctly.

littlerock

Yes the benchmark box is ticked.

macman

If the fall is sufficient, then the pipe should not freeze regardless of the pipe diameter, unless conditions are exceptional. Most of the problem ones are the result of inadequate fall in the form of lengthy near -horizontal runs of pipe. It doesn't help if they're also north-facing or weather-exposed, of course.