On 16/08/2018 11:50, David wrote:
On Thu, 16 Aug 2018 03:44:20 -0700, tabbypurr wrote:

On Thursday, 16 August 2018 11:39:18 UTC+1, David WE Roberts (Google)
wrote:

The ancient Radiant combi is mounted on an outside wall, and there is a
copper pipe (I assume the condensate drain) sticking out of the wall
with a downwards bend which is more or les constantly dripping.

I assume that this should go into some form of drainage. This may
explain why the concrete lintel below is rotting away.

Anyway, there is a rainwater down pipe close to it. Is it acceptable to
put some kind of joint in the downpipe so that the copper pipe drips
into it? The drain below is where some of the condensate will go
eventually.

Guttering is "interesting" and I'm not looking forward to fixing it
although it looks as though most of the grass growing out of the shonky
joints has been killed by the recent hot dry weather.

Cheers


Dave R

is it a condensate drain or pressure relief valve outlet?


NT

I am assuming condensate drain, but as you say it could be a non-
condensing boiler and that could be the pressure relief valve outlet.

Testing so far not looking good; hot water was working but first test of CH
seems to show that the pump runs, the indicator lights come on, but the
burner doesn't fire up.

Not looking like a pristine system.

I will be searching for a manual but last time I looked I didn't get very
far. Need a model number as well which isn't anywhee obvious.

Cheers



Dave R



If it is condensate which is acidic then I would expect the exit point
to be clean, maybe even shiny. If it is the pressure relief outlet
(more likely) then the exit would more likely to show limescale of
some sort or greenish from copper corrosion. This suggests a constant
need to repressurise, which your relative will soon be aware of.
This implies that there is little or no anti-corrosion inhibitor left
which is bad news for all the rads and other non-copper parts.