recently removed 2 rads from system, installed a new water pump but cannot get central heating to work.
the boiler(conventional) is supposed to operate heating and hot water but only does the hot water. i've bled the rads and followed everything the diy book showed but to no avail, help winter is coming and the missis is doing her nut
2006-11-09 01:43:27 · 11 answers · asked by EWE ANCHOR 3 in Home & Garden ➔ Maintenance & Repairs
If the boiler fires up when you turn up the thermostat, the chances are you've got an airlock in the pipework somewhere. This can happen easily if you drained the system to remove the rads. You can tell if there's lots of air in the system because the pump will be making an awful lot of noise.
Alternatively, if the pump is running and the hot-water is getting hot, then look at the 3-port divertor valve and make sure it's switching to the central point when both the heating and water are on. The motors on these things often go wrong, if the valve isn't working you should be able to set it manually by pushing the slider, although it may be quite difficult to move, use a metal tool of some sort. Good Luck !
2006-11-09 06:02:05 · answer #1 · answered by Timbo 3 · 0⤊ 0⤋
If its a fully pumped system then more than likely it an air lock if you cant find a vent near the hot water cylinder then crack a joint on the three way diverter valve in airing cupboard and vent the air off. Don't forget that the water might be hot so do it when the system has cooled down a little. Also make sure that the diverter valve is actually working get some one to operate the room thermostat with the programmer set to on whilst you observe the actuator operating.
Heating engineer
2006-11-09 11:31:34 · answer #2 · answered by Anonymous · 1⤊ 0⤋
You say you have removed 2 radiators - what have you done with the pipework that fed the rads ?
I hope you realise you need a feed pipe from the boiler to all the remaining rads and a return pipe which brings the flow back to the boiler. I just feel you may have capped the pipes off under the floorboards and got no flow. You don't say if the boiler fires up when there is a demand for CH, any more info? - model and make of boiler etc.
2006-11-09 10:34:41 · answer #3 · answered by Daddybear 7 · 1⤊ 0⤋
Check you've turned valves on either side of pump check header tank has got water in it and ball valve is working ,is wiring correct on pump so that it runs when you turn heating on ,check these points and then try a plumber
2006-11-10 02:49:55 · answer #4 · answered by Anonymous · 0⤊ 0⤋
have you fitted the pump the right way around. The body of the pump has an arrow on it to show the flow direction. also check that the pump valves are fully open.
2006-11-09 13:32:05 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Have you bleed the pump of any air?
If not there is a large screw on the front of it, try unscrewing it and that should get rid of the air. (make sure you don't forget to screw it back in)
Hope that helps
2006-11-09 14:34:53 · answer #6 · answered by T - C - B 3 · 0⤊ 0⤋
is the pump running? is it set to low1/2/3 water will heat by convection if tank is not to far away.
2006-11-09 11:20:22 · answer #7 · answered by jacs1uk 1 · 0⤊ 0⤋
i suggest u connect the flow and return of one of the radiators that u took off together then bleed the system of air it should help fix the problem
2006-11-09 14:56:24 · answer #8 · answered by carmichael 2 · 0⤊ 0⤋
I'd say it's time to break down and bring in a pro.
2006-11-09 09:45:04 · answer #9 · answered by mr.threethirtyfive 4 · 0⤊ 0⤋
you need a heat exchanger and a expansion vessel which you can get from plumb centre.
2006-11-10 14:45:04 · answer #10 · answered by monkey 3 · 0⤊ 0⤋