New Radiator never heats up

freelander999 · 8 Nov 2004

Hi,

Ive had a new radiator fitted in my house in a new extension,

15mm flow returns were taken from the 22mm's from the airing cupboard.

the radiator has never got hot, it only heats up if the bleed valve is open and water gushes out.

plumber has been back and says there nothing that he can do, (what?)

the flow comes from the pipe off the motorised valve for the rads and the return appears to come from a pipe off the cylinder, the return does warm up when rads are on and not a hot tap.

We have a double feed indirect cylinder.

what can I do?

brumylad · 8 Nov 2004

make sure that both valves on the new rad are wide open (turned anticlockwise).

After addition of a new rad. the whole system will often need to be balanced again. Although it sounds like your new rad. is the first one after the pump so should get hot.

freelander999 · 8 Nov 2004

they are both open, ive even switched all others off and this one still doesnt get warm

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freelander999 · 8 Nov 2004

further info the pipe that has been taken from is scalding hot before and after the spur. it is the 15mm spur that stays cold unless you open the bleed valve on the radiator

big-all · 8 Nov 2004

is the plumber saying he cant fix the radiator the same one who fitted it

if so he has to fix it

also he is not a plumber if he cant fix it

freelander999 · 8 Nov 2004

yep, hes the same guy,

im at a total loss as to what to do?

any suggestions???

PEDANTICVINDICTIVEMAN · 8 Nov 2004

Trading standards, you paid your money, it dont work, not fit the purpose of blah blah blah.

Bahco · 8 Nov 2004

Could it be that a slip tee has been used on one or both rad feeds blocking supply or return

You say the supply heats up when you open the bleed valve, but this should not make any difference.The rads source of water is from the 22mm so if this water is hot so should your rad tails and rad

Tell your plumber you will not be paying him until the rad is working as I know nobody would pay up without checking the job was satisfactory

kevplumb · 8 Nov 2004

could be you need an air vent on the top of the drops

try turning all the ones that are working off
and see what happens

breezer · 8 Nov 2004

did a quick search, what i found isnt it, what is a slip tee?

kevplumb · 8 Nov 2004

tee with no pipe stop
so tou can slip it on the pipe then back to make the joint
useful if theres no give in the pipework your breaking into

Bahco · 8 Nov 2004

Hi Breezer

Slip tee ( and coupler) both do not have internal stops for the pipe. Normally used when breaking in to an existing pipe run.
I make mine myself by round filing the fitting until it fits along the pipe

kevplumb · 8 Nov 2004

must learn to type faster fella

Bahco · 8 Nov 2004

Beat me to it Kev

breezer · 8 Nov 2004

thanks fellas

, i was just curious

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New Radiator never heats up

breezer

breezer

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