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How do I drain a pressurised central heating system?

Jun 15, 2007 by ROBERT | Posted in Do It Yourself (DIY)

I sine qua non to drain, then refill, a closed pressurised central heating system, in direction to replace a radiator.
But how do I refill it?

if you are replacing a radiator with one the same greatness there is no need to drain the system just shut off the 2 valves at each end of the radiator and displace by loosening the connection nearest the radiator, about to put something to catch the water that will come out of the radiator when you start to break the connections, assist the draining by opening the bleed valve at the top .

can you explain my central heating system to me?

Jan 13, 2007 by ric | Posted in Other - Home & Garden

Hi,
I've moved into my first billet and would like to know a bit more about my central heating system...

There is a gas boiler (about 3'by1'by1' or thereabouts - on the lining there is a peizo ignitor button, gas control valve and a thermostat temperature curb which is a radial dial with a min and max setting on it) the boiler is controlled by a 24hr digital timer for central heating and hot tap water (independantly) switching the boiler on/off.

Upstairs in the back bedroom is a hot ring false tank. On the outside near the bottom is a control dial with temperature settings.

There is no thermostat power in the house. Or not that I can see.

I have worked out how to control the boiler with the timer to flog on the hot water and central heating but how do I control the temperature of the water coming out of the taps? And why doesn't my profoundly have a room thermostat? Can a thermostat control be bespoke to my system to keep the house at a set temperature?

There is no way that your ancestry is missing the thermostat. If it did not have that it would run constantly since there would be no shutoff signal to say that the rooms are cheerful enough. More likely it is such a weird-shaped unusual one that you are common right past without recognizing it. Look for a disk-shaped or a rectangular shaped box on an interior wall at about eye raze.

When you look at the boiler there should be a pair of thin wires (either inside a jacket that is about a habitation inch in diameter or just twisted together) that go up to a thermostat in the take one's ease of the house. If they run along the basement ceiling that might give you a clue to where to find it upstairs.

The only other potential I can think of is that you have radiators with a knob that can be adjusted to douse off the steam to an individual room to indicate that the upstairs rooms are hostile to. That was the really old way of doing it but you did not say if the house is very old.

The hot water tank has the settings for the mineral water temperature coming out of the taps ("on the skin near the bottom").

Does gas central heating system have to be drained?

Feb 28, 2008 by Ms Mat Urity | Posted in Decorating & Remodeling

I have a gas central heating system. Next week I am having a plasterer to skim my walls (sporting house around 125 yrs old) in my lounge. I will require to instruct a plumber to get rid of a radiator to plaster the wall behind and then connect again on finalization. Can anyone tell me if this is a big job and does the Central Heating systme require to be drained? I alight in Scotland, can you please tell me the average cost of doing this. With thanks.

You should be superior to close the (2) valves completely either end of your radiator, (1 may have a cap over it which will purely revolve). If so, pull the cap off to reveal a flat spindle.
You use the dominance knob you've taken off the other end to close both valves clockwise. You would then have to patiently lost ONLY that radiator, by slightly undoing 1 connection (Valve to radiator), and placing a dish underneath to catch water. You would need to certain both valves were FULLY closed by using a shapely pair of pliers or preferably an adjustable spanner. To sanction the water to escape faster, you would slacken the bleed stretch at top of radiator.

I hope that is of some use to you. If not, a local plumber should purge it, & replace it when your work is done, for £50 or less as it truly is a simple & quick job.

I am assuming it's a new-fashioned radiator. Your plasterer may even know a mannerly plumber, ASK !!!
If I was close to you, I'd do it for a brew & a bacon butty. :) :)

PS,,, If it's only being 'skimmed' (top cag only), the brackets don't need to be removed from the close off.

What is the most economical way to run a central heating system in a house with no mains gas?

Mar 06, 2007 by mark | Posted in Other - Home & Garden

Accommodate is in the UK, very isolated and no chance of ever getting mains gas. I wondered if a central and salt water heating system run off oil or cannister gas, a log burning aga, solid fuel aga or anything not mentioned is peculiarly better and more economical than the other. Any advice would be helpful. I havent even considered solar or any other eco conceivability~but am open minded to suggestions as long as affordable.

an estimated 70 per cent of self-builders have to find an additional fuel to heat their home. The other options are Liquefied Petroleum Gas (LPG or 'bottled gas'), oil and tenseness. Solid fuel can also be used, although the majority of self-builders decide this for a supplementary form of heating - eg. Wood burning stoves.

Oil is the cheapest, followed by mains gas, LPG and then energy. Running costs will also be determined by the efficiency of your heating system. At the focal point of this system is a boiler or cooker which burns the fuel to yield both space heating and hot water.

Is it worth adding inhibitor to my 10 year old central heating system?

Sep 03, 2008 by alecwithac | Posted in Maintenance & Repairs

I've recently moved into a 10 year old abode, which from what I can tell did not have inhibitor added to the central heating system when it was installed. the system is affluent to be drained soon. Is it worth added inhibitor to the system now , or is the wreck already done?
In other words, is it worth it?