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Yes its 28mm from boiler to each zone and then reduces to 22mm

1st engineer based the boiler size on 6kw for hot water. 2nd based upon whole house size As they came out the same I did not question. 2nd engineer did complete Benchmark log book (although he did not complete ‘Central Heating Mode’ section, should he have done that ?) and notify...

Hi I am not sure if I have an issue or not but would like some help, 1st the history I had a new heating system installed this summer in to a 5 bedroom 3 bathroom house: • Valiant Eco Tec 637 • 22 New Radiators (Stelrad) • Un vented hot water system (Glow Worm cylinder) The pipe work...

Sorry will start new thread

Sorry for jumping on this topic but it seemed relevant I am not sure if I have an issue or not but would like some help, 1st the history I had a new heating system installed this summer in to a 5 bedroom 3 bathroom house: • Valiant Eco Tec 637 • 22 New Radiators (Stelrad) • Un vented hot...

Hi I have recently moved into a new house were the downstairs external wall are dot and dab. All of the joints between the plasterboard are showing through the paint some of them are cracked others just don’t look smooth. On further investigation it appears that the plasterboards are just butted...

Would you recommend insulating heating system pipes that are to be buried in a concrete floor ? I am currently having new central heating installed and the installer has installed copper pipes in the concrete floor he is proposing to cover them in Denso tape (which I think just protects them...

Thanks for the response, however can anybody answer the question relating to upgrading the pressure relief valve in case 3 bar is not sufficient

The engineer just about to install a new central heating and mains pressure hot water system, has just asked if he can swap the cylinder from an Ariston to a OSO Super S Series (both 300 litre) as the OSO will fit easier into the airing cupboard. My concern is that the Pressure Reducing...

Thanks, not what I had hoped to hear but what I feared. Already got rads thanks

I have an old vented heating/hot water system with a boiler in the garage, hot water cylinder in 1st floor airing cupboard and expansion tank, along with cold water tanks in loft. I am going to replace all radiators in property, before new system boiler and unvented cylinder installed by...

Thanks very much

Hi why would it be better in to complete the complete run in 15mm ? I am having the Megaflow installed to improve flow and pressure to all showers/baths etc. so to allow the bath to fill up quicker I assumed 22mm would be the correct way to go. Especially as the hot and cold to the mixer are...

Hi, I am about to install a new bath which I have purchased with a combined overflow and filler, which will be fed by a mixer/diverter mounted on the wall above the bath, which will feed both the bath and the shower above the bath. The connector on the side of the filler/overflow is ½”BSP and I...

Thanks for the replies, My old heating system allowed CH and HW to work independently I assumed they always should, I thought that was why a 3 way valve was installed. I don’t understand the comment ‘Programme Set for Gravity’ how can I check this and what difference would it make ?

Hi, I have read through various posts on this site and cant find a solution, my CH will only work if the HW is turned on. Having read details on here I replaced the 3 way valve, but this has not made any difference, here are the system details : • 3 Way Valve Danfoss HSA3D (New replaced...

Can confirm boiler is : Manufacturer : Thorn EMI heating limited Model : Apollo Any help ideas would really be appreciated

Hi I am looking for some help with respect to the 3 way valve within my hot water / heating system (I believe it is called a 3 way valve). To describe the system : • Installed in new house early 70’s • Boiler located in kitchen, has timer and on/off functions on the front of boiler. (I...

I belive I have sludge in my system, and this has been confirmed by reading some posts in this forum. However I am trying to flush the system and I cant get water to flow out of the drain valve at the bottom of the system. The valve is placed directly under a radiator and the radiator...