central

  1. C

    Looking for C&G PAT course in central scotland

    Hi all, hoping someone can help me here. Not having much luck finding a C&G Pat course anywere nearby, apparently Scotland seems to have its own set of rules (Im not a native so wouldnt know) and as I work for an English company have been told I need the C&G 2377. As its for work preferably...
  2. J

    central heating pump doesnt turn off

    Hi guys a bit of help needed not done much with central heating before but been asked to have a look at one,the problem is the central heating pump overrun wont switch off so pump just runs and runs until power is turned off, any ideas appreciated, the plumber was vague too when i spoke to him...
  3. B

    Immersion heater and central heating on same circuit?

    Would you loop of an existing immersion heater spur for a new central heating spur or, would you run a seperate supply?
  4. D

    Central heating problem.

    calling all fellow Sparkys...this may or may not be an electrical issue, but I've noticed for the last few days the radiators in my house are all "luke warm". I've done the obvious, like bleeding them all..and yes the room stat is turned up!....but they are all consistantly a mild...
  5. A

    Central Heating and hot water programmer

    I am having trouble removing the front plate on a Newlec / Horstmann 425 Programmer. There is a backplate that has all the connections to it and a front plate with the timer control switches. I think it hinges or pushes into the connector on the back plate but am not sure. The later version...
  6. C

    central heating - only working for 1 hour a day!

    hello, can anyone help me please. Not sure if I need a plumber or an electrician.......I had a new Drayton lifestyle thermostat LP522 and control panel fitted approx 3 months ago. Up until last week I just used the thermostat to regulate the heating but now the boiler wont fire up at all when I...
  7. N

    central battery unit

    hi guys can anyone help with this one i have being given the task of maintaining emergency lighting to a large office complex. the emergency lighting is fed of a ac/ac 230v central battery unit. under normal conditions 230v flows through the cbu and out to the lighting, under fault condition i.e...
  8. E

    Testing of central heating control wiring

    Hi all, Just after some advice on the testing of central heating control wiring. Obviously the fused spur feeding you boiler will be tested within the installation. From reading, I have become aware that the control wiring is covered by part p, there is also an option for this when submitting...
  9. C

    honeywell 4073a valve staying hot

    Hi, I have recently updated my central heating controller to a st6400c.I do not have a room thermostat.The controller works fine,central heating,hot water and /or both when asked for.The problem is when the central heating has been on the 4073a motor casing remains very hot even when the water...
  10. E

    Central heating wiring diagram needed.

    Hello all I am currently re wiring a mansion that has an existing central heating system which on the whole is being kept with only a few alterations. All the existing wiring has been removed and so obviously requires re wiring. The plumber who is carrying out the work says that the wiring...
  11. R

    New Zone on central heating.

    I have just fitted a new Zone on the central heating and need to wire it up. The new Zone will be controlled by a Carel S90 digital thermostat. Where the Zone valves have been fitted, the timer/thermostat cable runs past, so I've cut into the cable and it has 2 lives, earth and neutral. Because...
  12. O

    Central Heating wiring mess - help please

    All, Just been to see a chap who let a "friend" look at his boiler controls. The actual controller is a very old Drayton Tempus Seven Its now not working!! and you'll see from the picture that its a bit of a muddle and most of the wires are white. There are 5 cables entering this box so is...
  13. J

    Motorised Valve on central heating

    Hi, In my central heating system the oil burner seems to be over riding the clock/timer. The following is seen: When the clock/timer is on (all 3 channels) and the thermostats in the house reach the required temperature, the motorised valves close as expected. However the oil burner does...
  14. N

    Central Heating query

    Hi, I've was called to look at a heating system that the plumber believes has a wiring fault. Everything works electrically and looking at the diagrams is all connected as per ..... however when the cylinder stat reaches temperature, the system stops pumping round the radiators. If you turn up...
  15. 5

    central island sockets

    been doing other things to try and get more strings to the bow for the last three years so it has been a while. I am in the process of going through drawings for a large extension, and one of the requests from the custommer is for two sockets on a kitchen central island. The whole kitchen is...
  16. S

    Bit of help needed testing of central heating system

    Hi guys im normally ok with testing but not too sure when it comes to central heating systems. When testing water heater do i disconnect heater element first before doing i-r test ? And when testing r1=r2 do i have to test all valves and pump ? Also as there is electronic control on oil boiler...
  17. S

    Help needed with Central Heating Wiring

    Hi Need some help with rewiring part of the central heating system in my house. I am not a qualified electrician, but I wish to carry out as much of the work myself to save a few pounds and then get a qualified electrician to check and carry out the final connection at the fuse box. The person...
  18. J

    Wiring in a wireless thermostat

    hello to you all i have a combi worcester 24i rsf i have wire in a boss thermbps242rf but when i set the timer to come on the boiler will not come on, when it is cold it will fire up and whenit reaches its temp it will switch of can you look at the pitchers and tell me if i have wired it...
  19. C

    RCD Tripping When Either SFCU or timer goes off

    HI Guys New to the trade and currently learning but in real need of help. I changed the C/U and the RCD keeps tripping although all tests came back fine. It is the Central heating that is doing it for sure as I have had the immersion on and turned off the central heating for the past 6 weeks...
  20. L

    G83 paperwork??

    Hi Hope you can help with my understanding of the G83 paperwok. Just doing my 1st notifications, all systems 3kW or so. Have G83/1 appendix 3 forms all seem strait forward apart from couple points, where do I get the Max peak Short Circuit for SMA SB inverters? and SSEG Test Report, do you just...
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