I've decided to install a second hand back boiler I have acquired in my open fire. As I bought it 2nd hand I have no documentation with it. I will plumb it into my existing central heating along with a pump and a 3 way valve to switch it in and out of circuit by means of a themostat. I am aware that I will need to vent off some heat so have decided to install 2 old radiators in the loft in series as it gets very cold up there in the winter. I am not sure of the amount of BTUs the back boiler will produce so I can only guess on how mant radiators to put in the loft to vent off excess heat.....It is an 18" wrap around back boiler I have.....I Live in Scotland....Can anyone advise me ?
2006-08-18 03:24:28 · 5 answers · asked by Andy 4 in Home & Garden ➔ Maintenance & Repairs
I am using coal as a heat source.
2006-08-18 04:44:03 · update #1
It does depend on the type and make of boiler. They is a big variation between makes, but 20 to 30,000 Btu is average. But one statement you made fills me with horror and that is the use of a three-way valve to decide which heat source is used. You really need a fitment called a Neutraliser, Dunsley make a number of different ones. Should your electric go off and not allow the valve to open, you have a potential bomb on your hands. Believe me, I have been plumbing for over 35 years. I have seen the effects. The flow through a three port valve is also to restrictive because you should allow the water to circulate by convection and not be primarily pumped. Same reason as valve, danger of electrical failure.
I'm sorry but your question really does bring home the need for plumbers to be qualified and registered as electricians are required to be.
2006-08-19 05:41:35 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Call up or email the Central Heating Information Council on 0845 600 2200 (info@centralheating.co.uk) and as for a boiler & radiator selector software. The software would allow you to type in the make and model number of the boiler you have and it'll tell you the BTU output, SEDBUK rating, etc. Surely there's a sticker or a label somewhere on the boiler that says what make and model it is.
I have the software here, so if you could just tell me what make & model the boiler is maybe I could run it through for you?
2006-08-18 03:39:39 · answer #2 · answered by k² 6 · 0⤊ 0⤋
surely that would depend on what fuel(s) your burning?
A loft in scotland would of absorbed the exess heat i would of thought.
If not, put a radiator in the garden =)
(sounds silly, but it'd work)
2006-08-18 03:34:42 · answer #3 · answered by z3b3rd33 3 · 0⤊ 0⤋
best ask Corgi engineer
2006-08-18 03:30:49 · answer #4 · answered by Anonymous · 0⤊ 0⤋
its about 20,000 to 30,000 btus
2006-08-18 21:33:10 · answer #5 · answered by leslie c 4 · 0⤊ 0⤋