heating

  1. OwainOW

    Another st699 to hive thread

    Hi all, Sorry to add another thread but I’m looking for some help. I have installed a hive v3 water and heating replacing my old st699. This was prompted by removing the old thermostat that I thought wasnt working and doing nothing to find it was infact setting the heat of the house and plunged...
  2. J

    Replacement water heater

    Hi, I have recently moved into a house that has an instantaneous water heater for the bathroom sink. The heater has stopped working so I am now on the lookout for a suitable replacement. The current heater is a Tritan TW10i which I believe is 9.5kwh. As this heater is no longer produced, I am...
  3. G

    Unvented cylinder loses heat super quickly

    Hi guys Great forum. I have an unvented cylinder which is a Telford Tempest 250 litres with external expansion vessel, which we have the hot water on from 6am - 10pm (gas boiler). But within 2 hours of the hot water going off, the water from the cylinder is stone cold. If I turn off the hot...
  4. T

    Help understanding plumbing system

    I've moved house and I'm trying to understand what's going on with the plumbing. I have a combi boiler and then the below system for central heating and under floor heating. However this cylinder is turned off electrically but is hot, so is this fed from the combi? Is this tank just storage for...
  5. J

    New Boiler system sending bills sky high. Help with right setting

    Less than a year now. Got new plumbing system with Atag I40s system boiler with unvented cylinder 210l. Compared to the previous old vented system the gas bill seems to have double out. Plumber set up hotwater to 65° and heating to 70° Can you please advise if the hotwater can be keep lower...
  6. J

    latex flooring with warm water UFH

    Hi, I've been a plumber (not heating engineer) for 9 years now and finally bought my first home. As my first project, I decided to install a warm water UFH system. I've decided on Mapei Latexplan Trade for the screed which will be aprox 20mm thick. The data sheet states max 11mm per coat...
  7. J

    Noise on the pipe when heating goes on and off. Help

    A year ago I got house completely re plumbed with new pipe and heating system. I got system boiler with unvented cylinder. Issue is when heating goes on and when goes of we can hear a very noise on some pipe like TRRRRRR DUDUDUDU ( not easy to explain) This was noted t the plumber last year and...
  8. M

    Which programmable thermostat to replace Satchwell TLM2253

    Looking to upgrade our 30 year old+ room stat with something digital and programmable. Here is the current wiring set up. Is this just switchable with any programmable 3 wire stat? Any recommendations of which models are good and reasonably priced would be welcome. Looking for something with 7...
  9. P

    Nest thermostat with 2 hot water cylinders - how?

    Hello all, been a frequent visitor here for lots of tips over the years, but this is my first question. I would like to upgrade my Drayton digistat 3 (central heating) and separate Drayton LP711 (hot water) controllers to a single Nest system that controls both CH+HW. System is open vented...
  10. R

    Moving a radiator

    Dear Forum Members! I am researching options for moving a radiator to an adjacent wall (increasing the pipe run by about 190cm). The existing radiator has the following fitting: Here is how I imagine the process after watching some videos on Youtube :)))) · Identify the inflow hose...
  11. C

    Horizontal covered vs Vertical uncovered

    Morning all I’m looking at replacing an older rad in my lounge. At present, it’s covered by a sofa and which will be difficult to avoid with any large horizontal rad due to the size/layout of the room. Which of these options is going to heat my room better: 1. New 10,800BTU horizontal rad...
  12. G

    ALPHA CB28 No central heating ?

    Hello. I have an Alpha CB.28 which is giving no heating but hot water. With the DHW Flow switch fitted I get Hot water only If I remove the DHW flow switch and take it of from the cable it's attached to I get central heating but No hot water. I've ordered a new Flow switch to try and will update...
  13. S

    Chipboard over wet UFH?

    Hi, Midway through refurb with some heating concerns. I’ve had UFH put in. Part of downstairs is concrete, insulation with screed over UFH. Nice and hot. However, 75% of downstairs is joisted. I was worried by builder and plumbers plans to put UFH in here. They’ve put insulation between...
  14. ohmagain

    Replacing a Howden AA714 Element

    Hi All, Ok so as most of you know by now parts are getting increasingly difficult to get and am in need of two Howden AA714 15" 3kW IMMERSION HEATER 20A @ 72°C – 16A @ 95°C – AA714 (2 1/4″ Thread) elements. The supplier (only one by the looks of things) has a lead time of up to 4 weeks and a...
  15. A

    Understanding a Honeywell CM907

    I've moved into a new house and I'd like to upgrade to a smart thermostat, such as the Draton Wiser. Self installation seems do-able but I don't understand my current Honeywell thermostat CM907. Most smart thermostat install guides show many wires coming into the backplate of the existing...
  16. K

    Evinox UA10 Room Controller showing LP

    Hi, I have an Evinox UA10 Room Controller showing an LP message and flickering constantly (like this). I have looked into the user manual but there's no mention of any LP. My first guess was that it stands for "Low Pressure" but the boiler shows a normal pressure. My second guess would be "Low...
  17. P

    Installing Hive receiver to boiler

    Hi, I'd like to install a Hive single channel receiver to control the central heating from my Worcester Greenstar HE boiler. The current Honeywell thermostat only has two core wire to it acting as a live switch and is battery powered. My thinking is remove this cable from the boiler and using 5...
  18. E

    No heating on my ideal combi boiler

    Hello. I bought a flat a few month ago, but I cannot figure out how to get heating. I have gaz, and the Combi boiler (Ideal logic combi 30) is working for hot water, but not for heating. The boiler always display "0" which apparenlty means that there is no current demand. I set up the remote...
  19. S

    Leaking cold water outlet is the Wood burner the issue?

    Hi there, I hope someone can help as I'm struggling to diagnose what the issue could be and not having much luck getting a professional tradesperson to look at the problem I moved into a property last year with a wet system installed where the wood burner can be used to heat the hot water and...
  20. L

    Towel rail does not heat up

    When the heating is turned on, all the radiators in the flat is on. But the towel rail in the bathroom does not heat up. I have a combi boiler. Photos of towel rail are attached. Looking at the towel rail - there's a wire coming out of it at the bottom but no valves(?). I'm confused and wonder...
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