Flexible tubing for Solar heating

[jbolland]

I'm installing a solar panel kit which was supplied with a 10m coil of flexible stainless steel corrugated tubing. It takes 3/4" fittings and has foam rubber insulation. I've installed it neatly from the two roof panels into the loft, but I can't get it to seal at the fittings at the pump and cylinder despite my best efforts and following assembly instructions.
I'm thinking I may have to rip it all out and replace it with 22mm copper tubing and JG Speedfit where I need a bit of flexibility.
I'd appreciate any advice or comment before I undertake this extra effort and expense.

 

[townfanjon]

Speedfit on solar, is it april 1st

 

[Gray0689]

I'm installing a solar panel kit which was supplied with a 10m coil of flexible stainless steel corrugated tubing. It takes 3/4" fittings and has foam rubber insulation. I've installed it neatly from the two roof panels into the loft, but I can't get it to seal at the fittings at the pump and cylinder despite my best efforts and following assembly instructions.
I'm thinking I may have to rip it all out and replace it with 22mm copper tubing and JG Speedfit where I need a bit of flexibility.
I'd appreciate any advice or comment before I undertake this extra effort and expense.

Get someone in to do it properly

 

[gassafe]

I'm installing a solar panel kit which was supplied with a 10m coil of flexible stainless steel corrugated tubing. It takes 3/4" fittings and has foam rubber insulation. I've installed it neatly from the two roof panels into the loft, but I can't get it to seal at the fittings at the pump and cylinder despite my best efforts and following assembly instructions.
I'm thinking I may have to rip it all out and replace it with 22mm copper tubing and JG Speedfit where I need a bit of flexibility.
I'd appreciate any advice or comment before I undertake this extra effort and expense.

I'm guessing its the stainless steel type pipework, you normally flatten the ends with a special tool or the mechanical fitting & seal with a fibre washer!

Solar panels operate at very high temperatures, speed fit pipework would not be suitable!!

 

[jbolland]

Why? I've installed my wet underfloor heating, air source heat pump, woodburner with vented back boiler and rads as well as all the other house plumbing and electrics. Yes, all DIY but all safely and to the regulations (and there are plenty in France!). And it all works beautifully. I think I'm competent enough to get the solar heating installed eventually, just looking for advice from anyone used to working with corrugated tubing.
Also thanks to the first reply, I see that JG Speedfit has a temperature limitation lower than peak solar temperatures.

 

[townfanjon]

I do not doubt your compitence my friend, but if somebody off here advises you to use some speed fit pipe or fittings on a solar installation and something 'happens' it does not reflect the professionalism of the forum. Sorry .

 

[jbolland]

Thank Gassafe, my response was directed to Gray0609, pleased to see your info though. I've tried as you have described, maybe I didn't tighten sufficiently. I'll give it another go tomorrow.

 

[Gray0689]

For you to even contemplate using plastic pipe on solar tells me your not competent

 

[Dotty]

Thread closed.