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control

  1. B

    I want programmable thermostat to control a Mixer Valve.

    I want programmable thermostat to control a Mixer Valve. This to provide CH flow temperature from 30C to 70C from a thermal store tank at 80C
  2. B

    Oil Burner Control Box - What is wrong with it?

    Hi I have a Riello RDB2 and it gets power, tries to fire but no spark or flame and the red light on the push button comes back on. Smoke comes out of the control box. There is a fire valve over the burner and the plastic cover was off the burner, the fire valve leaked and oil leaked onto the...
  3. G

    Fix Triton T80 shower - temperature control

    We have a Triton T80 shower. When anyone runs more water in the house - such as flush WC - the temperature in the shower shoots up and is extremly hot - compared to the setting. There must be a temperature sensor/thermostat that controls temperature. This is obiously faulty. So when pressure...
  4. S

    What is the requirement for the control of the gas supply in a commercial plant room ?

    Hi, I'm a sparky. We are installing a couple of standard S plan control systems for a couple of new domestic sized system boilers in a residential care home. We also look after the fire alarm here. The client has just had a new tanked gas supply installed on site to supply these boilers which...
  5. M

    Hot water control (middle) difficult to turn and temp

    Hi I had a new shower fitted around 18 months ago.The middle knob controlling the temperature got a bit difficult to turn and eventually I had to remove it and attempted to put it back. I gradually found I could not get it cooler and would only come out hot. Does it sound like the cartridge...
  6. Y

    Honeywell ST9100C heating control advice

    Evening lads and lasses, First post here - hoping someone can help. I’ve got 3 of the above consoles on the wall in the garage just by the boiler. One is a dual control for both heating and hot water, one is for the downstairs under floor heating and the other is labelled ‘pump’ which I think...
  7. B

    Solid fuel appliance linked by H2 control system to oil fired rayburn

    I am after advice about a heating system I am looking to put into a recently purchased house. Ideally I would like a multi fuel log burner something like a stovax Stockton 11 with a back boiler connected to an H2 control system and that connected to an oil fired rayburn 680K. I have sourced the...
  8. R

    Secondary Return Pump control

    Hi I’ve just installed a secondary hws circulator and wondered on a sensible control strategy. Pump comes on when cylinder is heating up, but when cylinder is off on the timer the pump will Need to run To deliver hot water to the outlets. I was thinking along the lines of a separate 7 day multi...
  9. WaterWorks420

    Ideal Logic Combi ES38 No control

    Hello, I have a Logic Combi ES38 Boiler and for some reason, it's ignoring the commands from the thermostats on the wall, for example, both thermostats are set to off but yet the boiler is still on, I've tried the following: I've turned it to just water and not radiators no effect. Changed the...
  10. J

    G3 Registered, replacement control valve blowing off

    Hi Guys Just wanted to pick your brains on this one. (I'm g3) Customer has a 250 litre un-vented cylinder in his loft. He called me to the blow off dripping outside. The expansion vessel had failed and it was fitted at the bottom of the cylinder on the floor of the loft. The control valve...
  11. S

    Getting a Remote Control RFWRT thermostat talking to a Worcester Boiler 28i

    Getting a Remote Control RFWRT thermostat talking to a Worcester Boiler 28i, changed the batteries, no heating, hot water working ?
  12. A

    Building Control Regs on Changing the Boiler Position to Outside Cupboard

    Hi all, We want to change the position of our boiler from the Kitchen to the outside cupboard at the front of the house. The cupboard is 1m x 1m and 2.4m height and currently has a wooden door - so temperature wise will be close to outside temp. We want to install a Viessmann Vitodens 100-w...
  13. B

    Central hearing not being triggered by control panel

    Hi, I hoping someone may be able to help! I have the following system: Worcester 15ri boiler Drayton RTS1 thermostat Drayton Lp522 programmer BGMVSP-23 actuator/ mid position valve Both the HW and CH have worked fine and independently up until yesterday evening.. Now the HW works fine, turns...
  14. R

    Vaillant EcoTEC plus system boiler - DHW control?

    Hi there, Boiler question, but nothing that contravenes gas regs. To get to the point, the Vaillant EcoTEC Plus seems to have two knobs. One has a tap symbol, the other has a radiator symbol. Even the system boiler version of this boiler has two knobs. What I cannot make out is what purpose...
  15. P

    Beware! - the gas control valve jammed on Potterton Kingfisher - valve sent with wrong controller option set

    I am a keen DIYer but I don't play with gas! (I am an electronic engineer). I have an old (25yrs+) Potterton Kingfisher2 that soldiers on but just had it's first major fault - the gas control valve jammed. I ordered a replacement valve on-line and booked a Gas Safe Plumber to come and fix it. He...
  16. king of pipes

    Atag one control

    Finally got shot of this God dam awful thermostat, now have a 3rd generation nest linked to a Google home smart speaker works a treat . Kop
  17. H

    Vokera Option 24kw - no system pressure control

    With the filling loop disconnected and the boiler cold, the system pressure steadily over a couple of minutes rises to 3 bar. Does anyone have any suggestions as to where it could be passing over. Heat exchanger or ? any help to diagnose would be appreciated. Thanks
  18. J

    Vaillant wireless VRT 392f ebus control modulating advantages?

    Some info about interaction of Vaillant wireless controllers with the Vaillant ebus system please. Does connecting the wireless receiver to the ebus effect the boiler modulation and if it does what is the benefit over a simple on/off thermostat? I have had problems over the years with this...
  19. A

    Thermostat/Control box help

    Hi all. I'm trying to fit some smart thermostats but they require a mains connection. I have the wiring in place from the existing set up (battery powered thermostats), but they have no mains voltage going through them. The wiring goes to a Danfoss WC4/B wiring Centre as the central heating is...
  20. cr0ft

    Control of AHU Pre-Heat Coil

    Hi all, I've got 2x AHUs where I work with pre-heat coils after the filter on the supply ducting. These are heated using the boiler CT circuit. On both of these AHUs the method of control of heat to the coil is a 3 port mixing/diverting valve with the central port blanked off. There doesn't...

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