New Central Heating with 10mm pipe

[Roy_66]

I've got a house with 10mm radiator feeds. Have had blockages in the past, and change the corrosion inhibitor regularly. If I was building from scratch I would follow everyone's advice here and go 15mm. Think about what you want down the line, in 10, 20 years time.

 

[Gasinspect]

Used 10mm a lot, never had problems. Our house is 8mm, 20 years plus, (remember Servowarm?) works a treat.

 

[lazza]

Used 10mm a lot, never had problems. Our house is 8mm, 20 years plus, (remember Servowarm?) works a treat.

Lot of old local authority houses still got 8mm in and working, obviously not the best like

 

[Rob Foster]

Used 10mm a lot, never had problems. Our house is 8mm, 20 years plus, (remember Servowarm?) works a treat.

oohh Servowarm ...gasinspect,
thats a blast from the past...
for the younger ones on here
it was a well promoted Ng central heating system in the 70's. about 15kw no mains connection just a top,up bottle
and the ...Master Radiator ..which was in fact the boiler which fed the rest of the system
but looked just like a radiator and was hinged to allow access to the boiler...yes my dad had one instalked in about 1968
remeber it well
centralheatking

 

[Honey]

oohh Servowarm ...gasinspect,
thats a blast from the past...
for the younger ones on here
it was a well promoted Ng central heating system in the 70's. about 15kw no mains connection just a top,up bottle
and the ...Master Radiator ..which was in fact the boiler which fed the rest of the system
but looked just like a radiator and was hinged to allow access to the boiler...yes my dad had one instalked in about 1968
remeber it well
centralheatking

Good: Doesn't allow fluids to mix.

Bad: Forces and empty gap between pipes.

Solution: Automatically use Flow Control's directed pipes to keep pipes pointed away even when next to each other.

 

[Rob Foster]

tServowarm from £189.00

 

[king of pipes]

Blast from the past there Rob

 

[sammathias]

Nothing wrong with 10mm to rads......as long as the runs ain't really long and the rad isn't a massive double! Do tonnes of system with 10mm. Although 15mm is better....a well protected and flushed 10mm system is perfectly fine.

 

[swhyte1981]

Nothing wrong with 10mm to rads....as long as the runs ain't really long and the rad isn't a massive double! Do tonnes of system with 10mm. Although 15mm is better....a well protected and flushed 10mm system is perfectly fine.

Thanks for reply.
If I decided to go with 10mm pipe what would you recommend for max pipe runs? At the moment would be about 5m flow and return (10m total) to manifold 3 x double rads are 2.2Kw the other 5 x rads are all small.

Thanks

 

[Rob Foster]

10mm upstands to radiators always look poor, and get easily bashed out of shape. So please do the upstands in 15 mm and hide the 10mm in trunking.
Rob Foster aka centralheatking

 

[Gasinspect]

He is dropping pipes inside walls,so take it to outlet behind radiator and sweep down into chrome 10mm push fit elbows (screwfix] ,no joints in walls, very neat, hardly see any pipe at all, and clear floor for easy cleaning.

 

[sammathias]

Thanks for reply.
If I decided to go with 10mm pipe what would you recommend for max pipe runs? At the moment would be about 5m flow and return (10m total) to manifold 3 x double rads are 2.2Kw the other 5 x rads are all small.

Thanks

What size are your double rads?

 

[swhyte1981]

What size are your double rads?

Hi,

3 x large rads are 600 x 1100 doubles.

Thanks

 

[swhyte1981]

What size are your double rads?

Sorry.

They are 600 x 1200 doubles.

Thanks

 

[Gasinspect]

Yes, we have run these successfully with 10mm. Ran 22mm above ceiling, the dropped to 15 for each pair which were on 10mm each.

 

[Stu-B]

He is dropping pipes inside walls,so take it to outlet behind radiator and sweep down into chrome 10mm push fit elbows (screwfix] ,no joints in walls, very neat, hardly see any pipe at all, and clear floor for easy cleaning.

This is the best method, very tidy, plus stops the missus from bashing the pipe with the hoover. It’s what I’ve had for the last 15 years, as long as it’s fit right and flushed right then dosed with the right amount of inhibitor.... happy days.