External condensate pipe size

[landlordray]

Hello,

I have a rental property and had a new combi boiler fitted 2 years ago.
No problems at all with the boiler, my only niggle is that the external condensate pipe is 32mm and fully covered with black insulation.

This pipe runs almost 3 metres across the outside wall of the kitchen and then a further 2 metres round a corner to the drain.
As the property was tenanted at the time I ( and the tenant ) had just accepted this.

This is really unsightly and now that the tenants have left and I am looking to re-let the property, I would like to have this changed, as I feel this is putting people off when they come to view the property as this hits you in the eye as soon as you approach the front door.

Could the 32mm ( black insulated ) pipe be replaced by a 40mm ( or larger ) none insulated white PVC pipe which would look more cosmetically acceptable?

thanks

 

[Ric2013]

Could the pipe not be run mostly internally instead?

 

[SimonG]

32mm is minimum. What part of the country are you?

 

[landlordray]

Hi, no the pipe runs from the boiler vertically about 2 feet, then outside.
There is no facility to run the pipe internally due to kitchen cupboards etc.

 

[Ric2013]

The OP is suggesting a LARGER one not a smaller one, Simon. But he wants to run it uninsulated.

 

[SimonG]

Just saying 32mm is minimum so the world is his mollusc when it comes to something bigger.

I always run mine in 40mm uninsulated.

 

[landlordray]

The OP is suggesting a LARGER one not a smaller one, Simon. But he wants to run it uninsulated.

Yes that's it exactly

 

[landlordray]

Just saying 32mm is minimum so the world is his mollusc when it comes to something bigger.

I always run mine in 40mm uninsulated.

so 40 mm un-insulated would be OK ?

 

[Ric2013]

What is actually considered good practice then? 32mm uninsulated is okay?
OP - in what part of the country is this house and is it urban, rural (exposed or coastal), or suburban?

 

[SimonG]

MI's state 32. I use 40. Always have more 40 bits than 32. For your standard winter 40 uninsulated would be no problem.

2010 110mm was freezing solid. Dripping tap left without repair.

 

[landlordray]

Hi, property is a 3 bed terraced house in the north east of england. It is on a large suburban estate.
It is not coastal or particularly exposed

 

[Ric2013]

I think the answer is yes go ahead?

 

[landlordray]

Thanks for all the speedy replies.
The boiler service is due shortly so I will get the guys to replace the condensate pipe with 40mm when they come to do the service.

cheers

 

[Aire]

Hi, no the pipe runs from the boiler vertically about 2 feet, then outside.
There is no facility to run the pipe internally due to kitchen cupboards etc.

Run it under kitchen units in the the plinth space then terminate to outside as close to the drain as possible. With your average winter it's unlikely to freeze in a 32mm pipe anyway but the less pipe exposed the less chance of it happening when we do get a bad winter. Could save you 1 or 2 callouts

 

[landlordray]

Thanks, I appreciate the reply but it would be a big job to re-route internally.
one of the internal kitchen walls has a radiator fitted so pipe would need to go underneath and would need to be boxed in as it would be unsightly if left on show, in any event there is no room to do this anyway.
This is just one of the obstacles I would need to overcome to have anything done internally.

Much easier to do externally

 

[Old Account]

Somehow it feels like contradicting to me 32 mm changing into 40 mm as the 32mm hits you in the eye. 32mm would look so much better in my opinion.

 

[landlordray]

I appreciate your comments but surely there is less chance of 40mm freezing ?
40mm in white would look a lot better than 32mm covered in black insulation. The external walls are pebble dash, so white would blend in better than black.

I suppose if I wanted to, I could just remove the black insulation and leave the white 32mm pipe on show.

thanks

 

[Pickwickpick]

Somehow it feels like contradicting to me 32 mm changing into 40 mm as the 32mm hits you in the eye. 32mm would look so much better in my opinion.

I think the OP's issue was with the insulation which is on the 32mm and wants to change to 40mm in order to no longer need the pipe lagging. Personally I think 32mm lagged in black insulation would look better than 40mm white pipe, but each to their own.

 

[landlordray]

I think the OP's issue was with the insulation which is on the 32mm and wants to change to 40mm in order to no longer need the pipe lagging. Personally I think 32mm lagged in black insulation would look better than 40mm white pipe, but each to their own.

As you say, each to their own

 

[Pickwickpick]

As you say, each to their own

yep, the world would be a very dull place if we all had the same taste!

 

[Old Account]

32mmin white will look better than 40 mm you won’t need any pipe insulation for 32mm

 

[landlordray]

32mmin white will look better than 40 mm you won’t need any pipe insulation for 32mm

OK, well that seems to make things even easier, I just need to remove the black insulation.
Job done ...simples

 

[JCplumb]

Most white waste pipe isn't UV protected so will age rapidly if exposed to direct sunlight. Sounds daft but unless you get UV protected pipe, you'll need to paint it to protect it.

 

[king of pipes]

Maximum length of the condense run is 3m in manufacturers instructions, in this case I would fit a condense pump and pump it to a indoor drainage point , and loose the external run altogether. Kop

 

[Aire]

Maximum length of the condense run is 3m in manufacturers instructions

I should know this 'cough cough' but is that 3m in total or 3m external?

 

[king of pipes]

Dadaaa ! In know some - hit ha ha . Kop

 

[Aire]

Dadaaa ! In know some - hit ha ha . Kop

View attachment 36200

The way I read that is there is a maximum length if you terminate below the gully grate or into a condensate soakaway. If you was to leave a gap between the outlet and the gully grate then no length restrictions apply?

 

[landlordray]

Well, that seems to be giving me even more to think about.....

Might just leave it as is.

 

[Pickwickpick]

The way I read that is there is a maximum length if you terminate below the gully grate or into a condensate soakaway. If you was to leave a gap between the outlet and the gully grate then no length restrictions apply?

The way I read it is that the "no length restrictions" only applies if you are connecting to something along the lines of a sink or washing machine waste. When connecting to a soakaway or a gulley max run of the external pipe is 3m.

 

[king of pipes]

The way I read that is there is a maximum length if you terminate below the gully grate or into a condensate soakaway. If you was to leave a gap between the outlet and the gully grate then no length restrictions apply?

3m max Craig honestly it's there in black and white . Kop

 

[Aire]

Yes I can see that and not arguing about the fact, but is says when terminating in a gully below grid level and above the water level then a keep pipe length to a minimum and should not not be more than 3 metres. What I asked was, if for example you have no gully less than 3m away, you can't for whatever reason fit a soak away. If you terminate the outlet above the gully grate, does the maximum length still apply? As the instructions aren't specifically clear on this. It doesn't say maximum length is 3m, it's only says when terminating below gully grate.

 

[ShaunCorbs]

TBH I would leave it alone 11/2 will freeze had loads last winter if yours didn't freeze it's good

I can't see a bit of black armaflex insulation putting people off that much

 

[Pickwickpick]

Yes I can see that and not arguing about the fact, but is says when terminating in a gully below grid level and above the water level then a keep pipe length to a minimum and should not not be more than 3 metres. What I asked was, if for example you have no gully less than 3m away, you can't for whatever reason fit a soak away. If you terminate the outlet above the gully grate, does the maximum length still apply? As the instructions aren't specifically clear on this. It doesn't say maximum length is 3m, it's only says when terminating below gully grate.

i thought you were not allowed to terminate above the gully grate?

 

[Ric2013]

i thought you were not allowed to terminate above the gully grate?

I think the point was that you should A terminate below the gully grate and B terminate above the water level. As with any waste pipe running into a gully.

 

[king of pipes]

3m fact! above or below ie into a drain or a soakway. Kop