I have a Thorn gas boiler (approx 20 years old) and I dont seem to be able to get the water hot enough. I can only get hot water when the central heating is off and its switched to water only. When the heating's on the water is luke warm. I have checked the pump and its shown on setting two (out of 3), the thermostat is set on 4 (out of 5), can any one tell me how to get them both working together. I have had the boiler serviced in the last year and the guy couldnt explain this phenomenon. I have very poor hot water pressure in the kitchen only if that makes a difference and all the radiators are heating up fine. Please help I am sick of having tepid baths!!!
thankyou in advance
2007-01-19 09:55:20 · 6 answers · asked by Anonymous in Home & Garden ➔ Maintenance & Repairs
Servicing the boiler may not solve the problem unless a test on the gas flow rate was carried out as well (very doubtful ). This is different to a pressure test, It proves that the boiler burners are burning the correct amount of gas in a given period of time.
The boiler may appear to be burning OK but it may be at a reduced output possible due to a partial blockage on the injectors . It sounds more like this. On old systems the domestic circulation was normally gravity flow, If the radiator system was to big for the boiler then the domestic hot water would be the one to suffer, like wise if the boiler output was reduced then again the DHW would suffer. You most likely find that the boiler is firing all the time and never reaches the number 4 setting on the thermostat.
If you contact a C.O.R.G.I. reg installer he will be able to carry out a gas flow test and a pressure test on the boiler and meter.
2007-01-20 02:54:56 · answer #1 · answered by Anonymous · 0⤊ 0⤋
It seems that when you have your central heating on, it is taking all the heat away from the hot water. I am a bit baffled myself why this happens. The only solution I can suggest is when you want to bath turn your radiators down a bit before you run the hot water. This should give the hot water more heat and dont open the bath hot tap fully, let it run about half the usual amount into the bath. Good luck.
2007-01-19 10:30:02 · answer #2 · answered by Anonymous · 0⤊ 0⤋
the water in your system is probably laden with dirt and debris, causing the pump to circulate less effectively. The pump will create less positive pressure in the whole system. When your radiators are on they are offering the least line of resistance and not allowing water to circulate through your hot water cylinder. you could try turning the radiator valves to each radiator down a little bit, this will increase the resistance to the radiators a little bit and allow better circulation to the hot water system. the other option is to have a brand new condensing boiler and save about a quarter of the gas you use.
2007-01-19 19:51:18 · answer #3 · answered by bumbersquat 2 · 0⤊ 0⤋
you have either a scaled up cylinder or a blocked pipe /valve if you have a old cylinder change this for a new one .old cylinder take approx 1 hr to heat up new ones take 20 mins .a saving of about 3hrs per week on heating bills the fit a electronic descaler
2007-01-19 10:43:54 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Either buy a new boiler, or invest in an electric shower. Sorry to seem blunt, but I can't see any alternative solution.
2007-01-19 10:10:21 · answer #5 · answered by Ladyfromdrum 5 · 0⤊ 0⤋
how about boiling a kettle? It always worked in the olden days!!
2007-01-19 10:04:10 · answer #6 · answered by bevalou 3 · 0⤊ 0⤋