On Wed, 27 Feb 2008 11:06:19 -0800, ancell98 wrote:

Hi all
Just installed a gas boiler to replace solid fuel. Thanks to advice
received on this board--gas supply installed-meter installed--new boiler
installed--new gas pipe[internal] installed and tested--zone valves
fitted--complete wiring--new control panel and hot water thermostat.
System fired up and ran perfectly-------------almost--well chuffed. My
problem is a new radiator was installed-- it is the furthest from the
boiler about 20 feet--it will not warm up. The TRV works in both
directions so I have tried it both ways---no joy.
I have bled both input and output by slackening the lockshield and TRV
connections to obviate an air lock.
All TRVs were turned off to boost flow to the radiator--no change. Pump
is set at mid range.
The radiator will heat slightly when the bleeder is opened and the TRV
controlled input will get hot.
The whole central heating system is only 3 years old using a "classic"
22mm main ring with 15mm feeds to the rads on the flows from one side
and returns on the other basis.
The system is at normal atmospheric pressure--non-pressurised. I have
run out of ideas please advise. tam

There is a pipework problem or a blockage. Why did you choose to go for a
vented primary circuit?




--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at http://www.diyfaq.org.uk
Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html
Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html
Choosing a Boiler FAQ http://www.makewrite.demon.co.uk/BoilerChoice.html