Hi Guys
Can anyone offer some advice on radiator valves and boilers, First of all can I state I shall not be installing the boiler myself, but may decide to buy it depending on what price Mr. Gasman can get me one for.
I shall be installing the radiators and pipework to them myself, there are a total of 13 radiators in a 4 bedroom detached house, which will have one bath one shower, and a total of 4 sinks throughout the house.
The first thing I would like to know is what size combi boiler to purchase, I was thinking of a Worcester Greenstar Jnr NG 28i Condensing Combi 82,000 Btu / 24 kW
11.4 Ltrs/Min or a Glow Worm Ultracom 38 CXI Digital 102,390 Btu
15.5 Ltrs/Min.
The total wattage based on -3.0c is 13810 watts plus obviously enough to feed the domestic hot water.
I’m not sure if the boilers I’ve mentioned above are way over the top or not, long before combis had been thought of it was said that boilers should not be too large for the system they were intended for as they would not run very efficiently, but I am not sure about the modern boilers of today or whether they are based more on the flow rate required on the domestic sideof things.
I don’t want to go too much over the top with radiator valve prices as I am having to totally refurbish the whole of the house not just put central heating in.
I have read one or two old articles about noise coming from valves, can anyone advise if I should go for the wax sensor or liquid sensors ones and would it make any difference regarding noise from them, I understand some of them need to be fitted the correct way around which I assume it will say on the box.
The radiator in the hallway will not have a thermostatic valve as there will be a room stat nearby.
I have also read that the pipes need to be lagged for a certain distance from the boiler, can anyone advise if this is correct.
Many thanks for any help
Clive
Can anyone offer some advice on radiator valves and boilers, First of all can I state I shall not be installing the boiler myself, but may decide to buy it depending on what price Mr. Gasman can get me one for.
I shall be installing the radiators and pipework to them myself, there are a total of 13 radiators in a 4 bedroom detached house, which will have one bath one shower, and a total of 4 sinks throughout the house.
The first thing I would like to know is what size combi boiler to purchase, I was thinking of a Worcester Greenstar Jnr NG 28i Condensing Combi 82,000 Btu / 24 kW
11.4 Ltrs/Min or a Glow Worm Ultracom 38 CXI Digital 102,390 Btu
15.5 Ltrs/Min.
The total wattage based on -3.0c is 13810 watts plus obviously enough to feed the domestic hot water.
I’m not sure if the boilers I’ve mentioned above are way over the top or not, long before combis had been thought of it was said that boilers should not be too large for the system they were intended for as they would not run very efficiently, but I am not sure about the modern boilers of today or whether they are based more on the flow rate required on the domestic sideof things.
I don’t want to go too much over the top with radiator valve prices as I am having to totally refurbish the whole of the house not just put central heating in.
I have read one or two old articles about noise coming from valves, can anyone advise if I should go for the wax sensor or liquid sensors ones and would it make any difference regarding noise from them, I understand some of them need to be fitted the correct way around which I assume it will say on the box.
The radiator in the hallway will not have a thermostatic valve as there will be a room stat nearby.
I have also read that the pipes need to be lagged for a certain distance from the boiler, can anyone advise if this is correct.
Many thanks for any help
Clive