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Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws

  1. T

    Low loss headers and zone valves

    Presumably he means the 50mm mdpe. whats the boiler, 40cdi conventional?
  2. T

    Low loss headers and zone valves

    Whats with the 2x potable EV's bog rodder? How bigs the cylinder...300l?
  3. T

    Pressure drop across gas pipe

    Gofo, if he has 21mb working pressure at meter it cant be the regulator...the regulator is upstream of the meter test nipple. Assuming hes not taking a burner pressure reading its either a blockage or GV to blame
  4. T

    New Honeywell valve cable

    Why use 1.5mm KOP? I would just use .75 5 core
  5. T

    training to become a gas engineer

    This may be true, you might be qualified but be realistic in how much you are planning to earn as a new entrant with no experience.
  6. T

    No inhibitor, is it too late?

    Theres a few different types that are grey...you would have to read the side of it or look at a cross section to confirm. Seen a couple of installs in non barrier that have sludged up massivly supposedly down to the non barrier ingressing air
  7. T

    No inhibitor, is it too late?

    Was the plastic pipework barrier or not?
  8. T

    Worcester Greenstar Ri .

    Only the cdi regulars have aav's dont they, ri only has the quarter turn bleed next to the kebab
  9. T

    NEST Install advice please.

    You cant use ebus and the 230v RT, its one or the other
  10. T

    What size is my copper pipe?

    Cutting the pipe with a pipe slice as opposed to a hacksaw will help you get the fitting on if its imperial 1/2"
  11. T

    Distance from main supply pipe or bolier most importnat for balancing

    You dont need to go to all that trouble to balance a heating system. What are you going to do with these calculations anyway?
  12. T

    Vaillant S53 compared to other brands

    Auto bypass fitted aswell?
  13. T

    Vaillant S53 compared to other brands

    Whos sized the boiler...do you need 38kw? What do you have D0 set to in the diagnostics menu?
  14. T

    15M pump required, one large Vs 2 small in series?

    I should probably read the thread first. Most of what i wrote has been said already! The domestic heating design guide has a good bit on sizing pumps and working out your flow rates etc. I think its published by the CIBSE...the orange book. Worth a read if youve ever got a largish heating...
  15. T

    Cap internal blow off (prv) and fit on pipe work instead?

    You sure? Was at a 40cdi conventional last week.
  16. T

    Cap internal blow off (prv) and fit on pipe work instead?

    I know, read the message i quoted bud. He wrote about closing iso's on heat onlys...thats why i said ive never come accross a heat only with iso's. Incase it goes kaboom with no prv.
  17. T

    15M pump required, one large Vs 2 small in series?

    Whats the setup though, unless your using a LLH you need to add the resistance of the heat exchanger into your pressure loss calcs. In modern boilers this can be a big amount due to the small waterways inside for effeciency. Ive always worked out pressure loss of index circuit and work out your...
  18. T

    Cap internal blow off (prv) and fit on pipe work instead?

    I dont call system boilers heat onlys.
  19. T

    Cap internal blow off (prv) and fit on pipe work instead?

    System boiler yes. But he said "modern heat only boiler"
  20. T

    Cap internal blow off (prv) and fit on pipe work instead?

    Ive never come accross a heat only with isos underneath or on top?

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