central heating

Can anyone help want to change my Danfloss room thermostat RMT-230 To a Danfloss Basic Plus2 Room thermostat if possible but not sure where the 3 wires go on the new room stat Hope someone can help much appreciated

I wish to drain a pressurised central heating system, but I don't have a drain off point. I wondered what the best way to empty the system is? Cheers

During the last week I have started to notice that the water coming from the hot water tank (vented system) is not as hot as it used to be. Thermostat that is attached with the hot water tank is set to 65 degrees. The boiler is set to heat the hot water for 2 hours everyday. The pipe coming in...

Drained down the heating to change rads. Nearing the end of the job and have decided to add a magnetic filter to the system (open vented - gravity fed) as old radiators had quite a bit of sludge at the bottom. I get that best location is on return between last radiator and boiler. However...

Hi All, I'm going to be moving a few of the radiators in the house as part of a much larger project, moving walls, etc. Its 1930's bungalow so I have plenty of room under the floors to get to pipework. I was looking to make it easy on myself and use plastic fittings with just copper pipe...

Typically only seen 22mm feed/return in ceiling and 15mm being used for drop to radiators on ground floor. My current drops are in microbore, and I'm replacing a radiator with two tall designer rads, which will be located on either side of a window. Will there be any issues in doing drop from...

I'm planning to replace a long horizonal radiator under living room window with two tall single panel designer vertical ones (1800*380 and 1800*480), on either side of the window. BTUs are around 3500 for each vertical radiator. The distance between the vertical radiators (from centre) will be...

I currently have a drop feed to another one of my downstairs radiators which is at the end of a part of the upstairs radiator run. Currently the order goes upstairs radiator, upstairs radiator, then ending in downstairs radiator being teed off from 22mm feed/return. I plan to move the...

Looking to change microbore 15mm downstairs. Had a couple of questions, as I've only replaced radiators like for like/similar location in the past. 1) Can the 15mm pipe supplying an upstairs radiator [type 22; 500x700; 3613BTU] (teed off from the 22m feed and return) be used to connect a drop...

Hi, I would greatly appreciate advice from an expert on this matter. I am planning to convert a small garage (3x2.6m) into a habitable room and also build a garden office with a central heating(5x1.9m). The boiler is a Boxi 40 combi in a three-bedroom house, so it is definitely sufficient...

I need to drain my CH storage tank in order to switch out a leaking air escape brass valve assembly. (This has leaked gunky fluid). There are square nuts to drain system both at base of tank and also in garage above boiler...but these seem to be useless, they turn but no fluid comes out. I...

Hi folks, I would be super-grateful if you could let me know what you think of the price below: Convert from Economy 7 to gas using Worcester Greenstar 4000 30kw high efficiency combination boiler positioned in hotpress and flued horizontally through wall, with extended flue, system to...

Main symptom: CH works just fine and is sensitive to the thermostat when HW is off at the programmer. As soon as HW is switched on, rads get hot regardless of room temperature or programmed CH times The diverter valve is Honeywell V4073A All heating/HW has been off for weeks but the 3 port...

We're planning to upgrade central heating plumbing under the ground floor of our house but will be laying a levelling screed and flooring will also require an adhesive so bottom line is there will be no access to the subfloor for a long time. My question is what is the best way to go about...

My regular boiler has packed up and I'm weighing up replacing with a new regular boiler vs converting over to a combi. I'd prefer to go for the combi but my only worry is the risk of leaks on pressurising the system. Most of the pipework and radiators are from the 1960s. I've got nice tiled...

Hi, I'm just wondering if the following is an issue. Basically when I have my heating on, the light which is next to the radiator symbol on my boiler is on, indicating the heating is on. Now, when I turn my hot tap on, this radiator light goes out, and the light for the tap symbol turns on...

Hi everyone I am at the end of my tether. I knew I had a problem with the three-way valve (Honeywell) because I could only get central heating if I turned the HW button on too on the control panel - I have separate buttons for HW & CH. A plumber came out on Wednesday and replaced the motorised...

We are in this house over 2 years and I noticed the pressure of the system had been dropping below 1 bar every 1-2 weeks after I topped it up to ~1.5 bar. We had the house thermally examined for leaks but none were found and all radiators are bone dry. The expansion vessel was replaced as it was...

Hi Folks, I have a challenge with a Main Eco Elite 30 Combi which is short cycling on the CH. Water works fine. As soon as you have call for heat, the boiler fires up, modulates, but jumps very quickly (about 30 seconds or so from 40'ish all the way to 70, burner disengages putting it the...

Hi All. I am trying to replace an older wired analogue thermostat (HoneyWell) with a basic wired digital one (Danfoss RET2001M v2). I have tried a few of the seemingly logical wirings, but the best I have been able to do so far is have the new thermostat display the room temp, and I can...