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Johnson Controls International is an Irish-domiciled multinational conglomerate headquartered in Cork, Ireland, that produces fire, HVAC, and security equipment for buildings. As of mid-2019, it employed 105,000 people in around 2,000 locations across six continents. As of 2017, it was listed as 389th in the Fortune Global 500; in 2017, it became ineligible for the Fortune 500, as it was headquartered outside the U.S.The company was formed via the merger of American company Johnson Controls with Tyco International, announced on 25 January 2016. The merger led to the avoidance of taxation on foreign market operations and a financial windfall for the CEO of Johnson Controls at that time, Alex Molinaroli.

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  1. G

    Vaillant Controls - is it possible to mix wired and wireless?

    We have an all Vaillant setup - an EcoTEC Plus 637 system boiler plus wired VR720 and VR92 SensoCOMFORT controller, driving two CH zones plus DHW. It all works, but unfortunately we have found that the room stats are poorly located, and so the level of control is not what it should be. We had...
  2. M

    Controls and zone valve

    Is there anyway of testing electrically with a multimeter or any other way. Of testing that when you turn a room stat up it is creating a demand and opening the zone valve? Thank you
  3. D

    Heatining water controls

    Is there any regulations on standard gas oil boiler programmers ? . I’m thinking to replace one with tp link one gang smart switch. It gives more options for home automation then Google nest
  4. W

    Are Vaillant controls worth the investment?

    I am considering replacing my existing boiler with the new 2023 Vaillant ecotec plus 625 boiler. I currently have 3 x Heatmiser neoStat thermostats that are all hard wired back to the wiring centre; one for the central heating, one for a room with UFH, and one for the HW. I use the Heatmiser...
  5. R

    Vaillant Controls VRC470F

    I have a Vaillant Ecotec plus 630 and a VRC 470F Controller. The controller has a radio receiver in the boiler facia. Now I have a Sensohome controller to install with internet gateway. The radio receiver for this must be wall mounted and ebus connected. The question is, how to I remove or...
  6. S

    Heating/water controls

    Looking for a bit of advice. My CH system has 2 controllers one for water and one for heating. I would like to replace these with one controller for bother heating and water contol. I have a Salus RT500RF which controls the heating and is mouted in the hall and is battery operated. In the...
  7. T

    Controls advice - Multi zone

    Any recommendations guys? I’m looking for a central/single controller which will be located (in boiler room) away from the underfloor heated rooms. There will be six or so areas which will need to be separately temperature controlled. Each area will have a temperature sensor wired back to the...
  8. S

    Ludicrous Building Controls Fee in UK

    Hi all, So I did a job for a customer recently which involved swapping out an incredibly dangerous and poorly installed unvented hot water cylinder installation. It was my first time installing an UHWC by myself as I've recently started my own business. Before I started the job I realised that...
  9. M

    Controls for rental properties

    Hi all. I hope you are all keeping busy. Just wondering what controls people are putting into rental properties on combi boilers. As most controls are smart and be controlled from a phone, I am not sure if this is the best option due to a high turnover of tenants. But then again, it could be...
  10. yngndrw

    Which Controls: OpenTherm with Hot Water Priority

    Hello all, I'm looking for suggestions on heating controls. We'll be upgrading our boiler (To a modulating oil system boiler - EOGB Sapphire) and unvented cylinder (To a Mixergy cylinder) as we currently have a 13 year old fixed output combi boiler with a unvented cylinder which is fed solely...
  11. Stiltz

    Honeywell Controls Fault?

    Hello everyone! Since the cold weather started I’ve noticed that the Programer (Honeywell ST9420C) isn’t working properly. It doesn’t turn on/off in the auto pre set times in the C/H mode. It works correctly in the auto pre set times in the H/W mode. The C/H is effectively on constantly...
  12. Martdj

    ideal Isar He30 boiler works but the contol panel appears to be dead

    I have an ideal Isar He30 ( yes I know they are crap!) the boiler works but the contol panel asppears to be dead, the DHW and CH temperature controls have no effect and the boiler runs at max temp on both DHW and CH. I have repalced the display/contol panel and it still appearsto be dead. Would...
  13. M

    Choosing Combi with Modulation and Smart Controls

    Hi all I wonder if anyone could offer some advice. I’m looking for a new combi and thought I may as well upgrade to smart controls if we have to change it. I’ve pretty much worked out that I need a boiler with decent modulation (10:1 or as near to it would be great). I’d like a stainless heat...
  14. D

    Crosswater concealed controls

    Hi, not sure of model but it seems to be the 3 square type taps/valves like cross water controls for my shower. How do you remove the square control knobs? There seems to be no little grub screw any where on each of the square knobs and I have tried to see if they just pull off, but no joy...
  15. M

    Which bits of Honeywell heating controls are 24v?

    Hi, I'm super-confused.My new ST9400C controller, V4043H zone valves and T6360B1028 room thermostat were purchased as 24v items (eg see ). But the ST9400C wiring diagram, for example, clearly shows that it needs to be wired to a 240v main supply and nothing in the instructions for either this...
  16. C

    Pressure issues or controls?

    I have a worcester Bosch greenstar CDI compact that’s around 6 years old. Over the last few months I’ve noticed the pressure when the heating isn’t on drops to 0 and if I flick the Salus control on the boiler to on nothing happens and the boiler light stays off. What I have since worked out is...
  17. B

    Vaillant ecoTec plus 637 System boiler control options

    Vaillant ecoTec plus 637 and gledhill 250 indirect tank control options Hi, I am in the process of renovating an old farm house. I have been advised to have installed the Vaillant ecoTec plus 637 system boiler with a gledhill 250l indirect tank. I met with the heating engineers yesterday as...
  18. gmartine

    WB wireless controls

    Anybody else make a clip in wireless kit for a WB combi besides Drayton and WB Comfort?
  19. G

    Smart Heating Controls

    Hi. I'm currently renovating a house I've just bought and have just had a Vailant EcoTEC Plus 832 boiler installed and am now looking at options for a smart controller and TRV's for each radiator. All my electrics will be using Lightwaverf products controlled using an amazon echo, but my...
  20. J

    Radio frequency heating controls

    Are radio frequency heating controls any good or should I try to go for wired one's?
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