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what i basicaaly need is...... you know an extractor fan in a bathroom that when you turn the light on the fan comes on too automatically and stays on all the while the light is on but when you turn the light off then the fan keeps running for 60 seconds before turning itself off. I am...

hi. is the second item an off delay timer?

Just tried to run that through on a wiring diagram but unsure as to one part. the pump has 3 wires, earth, neutral and live. i understand how to fix and wire the pipe stat so that when the pipe is hot it closes the switch and live elec wire connects to the pump so pump runs until pipe stat is...

Great

actually when the pipes are cold in the morning, how would the pump turn on when the boiler starts? would the pump not start until the pipe got hot?

Hi, the link did not work due to session time out. Can you redo the link? Thanks.

That sounds good. Where would I get a pipe thermostat as suggested - a normal plumbers merchant or could you provide a link to one online? Is it easy to fit to the pipe - I can do basic electrics ok. Many thanks. Steve

because if the pump goes off immediately the switched-live connection is broken then there is heat build up in the boiler heat exchanger causing kettling/rumbling noises in the pipework. The 60 second delay would allow the pump to pump the water for 60 seconds after the boiler has gone off...

THIS QUERY DOES RELATE TO ELECTRICS AND NOT PLUMBING SIDE OF THINGS. Here is brief rundown of my situation. My problem is that the central heating circulating pump in the airing cupboard is connected directly to a switched-live connection and as soon as the switched-live connection...

My set up is an open vented hot water and heating system with Ferolli Sigma 40-60 wall hung boiler in kitchen, water cylinder in airing cupboard upstairs with 2 x 2-port Sunvic valves and programmer. room and cylinder stats too. My problem is that the circulating pump in the airing cupboard...

Further looking at this by me shows that "sometimes" after the motorised valve (on water or heating circuit) turns fully on, this sends signal and boiler starts but pump does not! hence banging kettling noise. Flicking the programmer switch off and on again makes the pump then miraculously...

Thanks.

Have just moved in....... I have an old danfoss hot water and heating programmer. manual clock and off, on or timed settings on both circuits. I want to get a new programmer fitted with a digital clock etc that can have different settings for weekends etc. Also the wiring to the 2 port valves on...

spoke too soon!!!!!! Question...... I have a 2 port valve on both the hot water and the central heating pipes. When the cylinder stat calls for heat, the 2 port valve on the hot water pipe turns and when it finishes turning the pump starts, the boiler lights etc as normal. When the...

Circulating pump replaced by engineer £88 all in. Seems to have cured the noise.

just a bit of further info - my pump is made by circulating pumps ltd (website of http://www.circulatingpumps.net/products/cprange.asp ). Mine is a CP63. Does anyone know if I can get a new speed selector switch rather than replace the pump? Thanks.

Just for info, it is a small 3 bed terraced house with 4 rads upstairs and 1 downstairs plus water cylinder in airing cupboard. I was having a look at my circulating pump in the airing cupboard. It has 3 speeds. It was on speed 2. The speed changer is a disc that you turn with a screwdriver...

Hi Yes there is a permanent live. and a pump over-run to the boiler too. Is renewing the gold thermistor a heating engineer job?

I spoke to my boiler installer on the phone (he no longer lives round my way) and he says that the problem sounds like a blockage in the flow system causing the boiler to overheat (not enough water pumping through? ) The pump in the airing cupboard has 3 speeds and it is on speed 2. Not had...

When you say "high gas rate when cold" ? What does that mean? Sorry to seem stupid. Thanks.