1. Z

    Underfloor heating pump wiring

    Hello everyone, i have installed underfloor heating, and cant figure out how to wire manifold pump so that it only turns on with the heating on and not with hot tap water it is a ideal logic + combi 30 boiler. Anyone know if its even possible?
  2. I

    Dual Hive Using For Combi

    Hello, I'm using a Dual Hive for Combi (I'm using this and not single because it got it soooo cheap ). I have researched as much as i can, before asking. Have I set this up correctly ? Hive = Boiler Earth = Earth N =Blue L = 230v Live Out 4: Heating On (NO) = 1 References used ...
  3. J

    Combi system losing pressure

    Has anyone known a Grant 26 combi (external) to leak internally into the flame chamber? For the approx four weeks, every morning the boiler has lost all it's pressure. I refill the system to 1.2 bar, and it kicks back in, and works fine - rads toasty warm and hot water is hot! This may last two...
  4. F

    Which operating mode for Viessmann 100-W?

    I'm about to get a Viessmann 100-W B1KF and plan to have it hooked up to a Tado smart thermostat system. I'm assuming that as the Tado supports OpenTherm, to get that benefit, I should ask the installers to make sure it is in the operation mode highlighted below (from the 4 available)? I've...
  5. F

    Combi boiler with 2 showers at once - enough power?

    I am currently using a system boiler (Ideal Mexico Super 2) and water tank, which is about 30 years old. I'm looking to replace this with a Viessmann 100-W (B1KF) 32Kw combi. I was wondering would I be likely to see a significant difference if 2 showers run at once? I'd like to avoid needing to...
  6. N

    Viessmann vitodens 050-W valves

    Hello, I stupidly was fiddling with the isolation valves in my viessmann vitodens 050-W boiler and forgot which direction they go in, I have all valves open currently, the hot and cold water, flow in and flow out valves also. Is this correct?
  7. S

    Heatslave 15/19 oil boiler - intermittent lockout issue

    Hello I am hoping someone can help. We are having issues with our boiler. When we are just using the boiler for hot water there are no lockout issues at all. However, when the heating is in use it the boiler will lockout around 30-60 minutes after the heating has come on (it can sometimes...
  8. M

    Scorching water from Vaillant combo

    Hi… I have an old Vaillant Ecomax 824/2e that is making some very hot water! The water temp gauge is set to 50 degrees Celsius (on the lcd display on the boiler - the dial is about half way between coldest and hottest). However, when I turn on the top tap fully, the reading on the same gauge...
  9. J

    Replacement boiler - keep traditional or change to combi?

    Hi Our 30-odd year old Potterton Netaheat boiler has stopped working (fan works but it's not firing). I've decided not to bother throwing good money after bad and paying someone to come and look at it having cancelled British Gas Homecare some years ago. I've done some research and it seems...
  10. B

    Temperamental Biasi - bin it or persevere?

    Moved into my house December 2019 with a Biasi Riva Advance HE installed over 10 years ago (found out from their service line it's not under warranty). Had a couple of intermittent faults with it over the past 18 months but for the most part its been ok. New problem started this week - hot...
  11. B

    New combi boiler - am I being bullied and ripped off?

    Hi all, I currently have a 13 year old Worcester Bosch Greenstar 28i Junior Condensing Boiler installed. It's unfortunately developed a leak on the right hand side as you face it, but it's not losing any pressure and we've still got heating and hot water. I went on Checkatrade and found a...
  12. R

    Replacing old thermostat with Hive.

    Sorry, I really have spent about an hour looking online for the answer and just can't find anything. Boiler = Worcester Greenstar 28i (dial/timer in the middle) Old thermostat = Siemens Landis & Staefa RA02 New Thermostat = Hive single chanel active heating. The old thermostat is in another...
  13. G

    Boiler Flue Tip / Exhaust Vent

    Hello all, We have the boiler serviced every year under a cover plan that we've had. Boiler is great, about 15 years old and we've lived here 4.5 years and it's not let us down at all. Every year they come to service it, every year it passes, although the person servicing it seems to insist...
  14. J

    Worcester Bosch Greenstar 28i Junior Combi Boiler - Help

    Hi there, Link to Manual: Not a plumber, just an infuriated owner of the subject boiler. I had a oil to gas conversion done and this boiler installed late 2013 by what I perceived to be a competent...
  15. J

    Combi-boiler no hot water/good CH/no flow in filling loop

    20210210_191008 by jk1_1 posted 10 Feb 2021 at 7:18 PM20210210_192807 by jk1_1 posted 10 Feb 2021 at 8:14 PMI have a Heatrae Sadia Electromax Combi-boiler. CH works, but no hot water. This coincided with 2 events: a full bath of hot water the night before (may have emptied the tank), plus...
  16. A

    Combi Hot water trigger

    First time living in a house with a combi. When I run the cold tap it triggers the combi hot water setting, I've checked the pipes and they are all connected correctly. The combi is just over a metre from the cold tap, is this just the slight pressure drop triggering as the boiler is so close to...
  17. H

    Baxi Combi with DH Tank and 2 CH Zones

    Hi All I am planning for a house extension at the moment and would like to implement the attached scheme in the Central Heating work. The house will have 1 bath + 2 showers when completed, for 3/4 people. The existing combi is a Baxi 30kW, 2 years old, from the previous owner. Since it would be...
  18. E

    Vailant Turbomax Plus pressure fluctuation and ideal CH temperature

    Hi All, I recently moved to a new place. I am noticing a significant fluctuation in the pressure at operation (given my limited past experience) in the gas boiler and I just wanted to check whether that is ok for this model/seek some advice. Details -Vailant turbomax plus -small 2 floor...
  19. Cactus_flower

    Fixing hot tap - combi boiler

    Hi all. Apologies if my question is obvious to some/most! I am fumbling in the dark here. Am a new home owner, and have a leaky hot tap in the upstairs bathroom. More specifically, we have a 1901 Bristan pillar bath/shower tap, and water is leaking from the spindle on the hot tap. I can't see...
  20. J

    Hive to Ideal Logic+ Combi 24

    Hey there, Wondering if someone could give me a hand with wiring up a Hive to my combi boiler. The current wiring looks like this, boiler wires on the left and power and thermostat on the right. Its all just wired into a big connector. The boiler has 2 black wires rather than a black and grey so...