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Search results

  1. B

    Low Water pressure area

    Dear all, I have a question please kindly help me. The job is in rural area and has very low water pressure. There is no gas here. The customer is thinking to install an electric combo boiler. The problem is the minimum pressure for electric boiler is 1 bar. How can I fill up the combo system...
  2. B

    Advantages of commercial water heater

    Dear all, One restaurant is going to install Andrew commercial water heater for hot water supply. I think if they install an un vented cylinder which is much more economical but same hot water supply. Anyone has installed commercial water heater before? What are the advantages? Thanks.
  3. B

    Anyone familiar with Worcester 440CDI?

    Dear all, Trying to install a Worcester 440CDI floor standing boiler. Never installed this one before. Read the manual carefully before start. The wiring looks similar with other Worcesters. However when i tried to commission it only hot water is working. If i turned on the programmer the...
  4. B

    can multi zone under floor heating use internet room thermostat?

    Dear all, this is a 4 zone underfloor heating system, i normally use wunda room thermostat, but this landlord wants to control the system on mobile phone, I used IT500 before but that is volts free and for combi boiler only, Has someone had this problem before? Many thanks!
  5. B

    can old vaillant pcb be used for new boilers?

    installed a vaillant 637 yesterday, when i did the wiring unfortunately the pcb is burnt, i found a pcb in ebay for good price, but later i realised the part number is 0020052093, this is the old part number, the new part number is 0020132764, this is for sale on other sites, so have i bought...
    • bluesky
    • Thread
    • boilers vaillant
    • Replies: 7
    • Forum: Boilers
  6. B

    vaillant boiler service is really rubbish.

    recently installed a vaillant boiler, leaking, called them, engineer did not turn up, called again, said i should pay for 13 pounds car parking, that means i have to wait in the car park for a whole day? landlord does not want to pay for it, then vaillant refused to repair it, what a rubbish...
    • bluesky
    • Thread
    • boiler service vaillant
    • Replies: 20
    • Forum: Boilers
  7. B

    vaillant boiler service is really rubbish

    recently installed a ecotec plus 831, 1 week later customer found there is leaking under the boiler, i opened it, looks the cold water inlet is leaking, called vaillant service line, booked a service, they texted me a guy would call me before 9am to confirm when they came, but did not call, the...
    • bluesky
    • Thread
    • boiler service vaillant
    • Replies: 4
    • Forum: Boilers
  8. B

    connect fire alarm with interlock

    Dear all, A shop owner askes me connect the fire alam and interlock, so if the alarm goes off the gas supply to kitchen will stop, I know that i should use a relay to connect the interlock, but i notice that there is a '24v output' and also a 'aux' in the fire alarm panel, which one shall i...
  9. B

    must i replace the gas pipe?

    recently i have updated a conventional boiler with a vaillant 831, the gas pipe is under floor and about 10m long, it looks ok so i did not replace the gas pipe, however after replacing the boiler i found that the inlet pressure is only 17mb, meter working pressure is 21mb, aothough the minimum...
  10. B

    relocate an existing boiler, shall i submit the job?

    a landlord is going to do an extension, therefore would like to relocate a boiler, the boiler is only 3 years old so he wants to keep it, so if i do the job, shall i submit the job to gas safe? cheers
  11. B

    what is the best way to install a vertical flue?

    dear all, i am going to install a boliler in a flat, it is 2nd floor which is top floor, however it looks i have to use a vertical flue because the cupboard is in the middle of the flat, shall i find a roofer to help me? or hire a scaffolding? never worked on high level before, any suggestions...
  12. B

    unvented cylinder discharge termination

    in some old houses it is very difficult to find a good route for cylinder discharge termination, any good experiences to share? cheers
  13. B

    cannot find return pipe for bathroom radiator

    i have converted a regular boiler to combination one, there is a 15mm pipe after the pump and i found it was the flow for the radiator in the bathroom, however this radiator is not hot although all the others work fine, i am thinking something wrong with the return pipe but cannot find it at...
  14. B

    can i connect the new boiler with the old flues?

    dear all, i am going to replace an old keston boiler, it has twin flues, everything is easy but the flues is a pain, the aparment is 15m high and i have to hire scaffolding if i have to replace the flues, is it possible i can connect the new boiler with the old twin flues inside the apartment...
    • bluesky
    • Thread
    • boiler new boiler
    • Replies: 14
    • Forum: Boilers
  15. B

    boiler flue terminal too close to a cooker hood terminal

    i found a combi boiler flue terminal too close to a cooker hood terminal, only about 200mm, does this make the boiler combustion not safe? cheers
  16. B

    how to connect secondary return pipe for hot water?

    dear all, sorry for this silly question,i am not good at plumbing really, still at training, i am going to convert a conventional boiler to a combi boiler, there is a secondary hot water on the side top, i am thinking to just connect it with hot water from top of the old cylinder, is this ok? i...
  17. B

    best position of air vent

    hi, this really puzzled me, at the moment the top position is filling loop pipe, shall i install the air vent in filling loop pipe or top of central heating pipes? thanks a lot,
  18. B

    hot water does not work without central heating

    just installed a megaflo cylinder with a baxi system boiler, the problem is the hot water cannot work without turning on central heating, i suspected there is something wrong with the DHW valve, however it is fine, when i turned on the DHW, the temperature changes from 40 to 80 very quickly and...
  19. B

    a radiator cannot warm up after draing

    i have replaced a 3 port valve, had to drain the system, the problem is after i filled the system up again one radiator cannot get warm again, i have closed all the other radiators and tried bleeding of this one, but it only warmed for 3 minutes, looks somewhere blocked, the landlord said it has...
  20. B

    can i replace a regular boiler with a system boiler?

    a landlord is thinking to upgrade his regular boiler to megaflo system, due to financial reason he wants to change the boiler only at the moment, and then upgrade the cylinder next year. I had a think because the system boiler has an built in pump otherwise it is same to regualr boiler, if i can...
    • bluesky
    • Thread
    • boiler replace system
    • Replies: 16
    • Forum: Boilers
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