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  1. 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...
  2. 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...
  3. 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...
  4. E

    My central heating thread.

    Hello all. If like me, you never have a look on the Central Heating forum would you mind having a quick peek at my post? (probably only worth it if you have experience in wiring for under floor central heating + rads) and see if you could offer any advice please? Sorry to the mods if this...
  5. 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...
  6. 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...
  7. 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...
  8. 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...
  9. 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...
  10. 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...
  11. K

    SELV and 230V circuit separation

    It is planned to install a central 24V SELV supply in a domestic residence, e.g. to power LEDs. According to my reading, BS 7671:2008 chapter 414.4.1 (ii) requirements for protective separation between a SELV and 230V circuits offer the following options a) double insulation -or- b) reinforced...
  12. B

    central heating fed from spur

    bit of advice please guys. when doing a pir or cu change do you test the central heating wiring which is fed from a fcu off a ring or radial circuit. thanks neil.
  13. L

    Complaint about time taken to be registerd with Ofgem central FITS register

    I have had to wait over 3 months for EDF to register my PV system and so it will apparently be 6 months after installation before I can submit a reading and up to 9 months before I get my first payment. There were no problems or errors with my application form though they claim they have been...
  14. S

    Central Heating courses

    Can anyone recommend a good central heating course ideally covering s and y plan, underfloor heating systems and maybe ground source??? By the way, has anyone done the NIC PV course? The lad I work for has just done it and said it was a total waste of time and money with roofers and kitchen...
  15. S

    Central Heating courses

    Can anyone recommend a good central heating course ideally covering s and y plan, underfloor heating systems and maybe ground source??? By the way, has anyone done the NIC PV course? The lad I work for has just done it and said it was a total waste of time and money with roofers and kitchen...
  16. K

    PIR required central Notts

    Anyone in the Nottingham area interested in doing a commercial PIR in central NG1 area. I can’t do it so I said I’d try and find someone to do it for them, they have a fire inspection due at the end of August. Please PM me if interested.
  17. S

    1 central or multiple string inverters for 50kW system

    Does anyone have an opinion on the route to go for a 50kW system that either has 1 large central inverter or many smaller string inverters? My immediate thoughts are: 1. If some of the panels or inverters drop out then at least remaining parts of array will produce energy for a system that uses...
  18. A

    Bonding central heating pipes

    Cross bonding central heating pipes, good practice to wire in 4mm2 ? any thoughts...
  19. B

    Central Heating Controls

    Hi, Does the wiring runs and wiring up of central heating controls come under BS7671. Would a cert be required for this type of work. Thanks in advance
  20. D

    Domestic central heating need help.

    Hi im new to this board so sorry if this is in the wrong place. Currently there is work going on in my house and the boiler is moving from one room to another along with time clock and thermostat. Now there was a 3 core from time clock and a 3 core from stat going to boiler spur with 5 core flex...

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