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rad

The radian, denoted by the symbol rad, is the unit of angle in the International System of Units (SI) and is the standard unit of angular measure used in many areas of mathematics. The unit was formerly an SI supplementary unit (before that category was abolished in 1995). The radian is defined in the SI as being a dimensionless unit, with 1 rad = 1. Its symbol is accordingly often omitted, especially in mathematical writing.

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  1. M

    Why is Rad. Feed not as Hot as Flow Temp I've Set?

    Why is the radiator feed approx. 24degC just beyond/out of the Vaillant gas boiler (and also at the first radiator), when I've set the flow temp to 53degC? With boiler firing, the 53deg setting is always flashing on and off on the display - does this mean it never actually gets to 53? Thanks!
  2. F

    Moving rad without draining down.

    Does adaptor exist? Hi, looking to move a rad, the original valves will be hidden behind a bath, so I was wanting to leave original valves in place so no need to drain down, connect a run of 15mm pipe connecting to its new position. What size connector would fit on old rad valves that would...
  3. F

    Wood Burner back boiler with gravity rad system.

    Hi All...thx for the help in advance. I have recently installed a wood burner with back boiler heating system. Set up with gravity rad and header tank in loft. I have a recirculation pump installed that I have connected to the rad system that I turn on and off manually. I wanted to know how...
  4. M

    Permanent rad removal?

    Is there anything in the regs that I’m unaware off to stop us from removing a radiator permanently?? Silly question no doubt. When removing new build rads, that are obviously piped in plastic, are you just cap ending them and pushing them in the wall or going back to a fitting in the floor...
  5. P

    Conservatory radiator help

    Hi All, would appreciate some advice on next steps with conservatory rad. Single conservatory rad not heating up at all, neither pipe getting warm. All other rads in house working fine. So far I have checked the TRV which is not seized and also adjusted the lockshield which is also not seized...
  6. R

    Rad heating up while off

    Hi I’m new here and don’t know a thing about plumbing so be gentle on me as I am also going to ask a possible dumb question, this summer I turned of the ”heating“ on the Drayton box and turned thermostat to zero but obviously had to keep the hot water on as I do every summer but I noticed the...
  7. I

    Thermostatic rad valve

    I'm in Canada, where the standard is NPT. I just put in a heat pump and shut off the hand valves but I want the rads in the room to warm up if the heat pump can't keep up. NPT thermostatic rad valves are available but are hellish expensive. The sizes I have are 3/4" and 1". The system used to be...
  8. L

    Two options for plumbing up vertical rad

    Fitting a vertical rad after having hallway replastered and after a bit of digging about online, I have two options for plumbing it in as pipes are easily accessible beside the rad, not been boxed in yet. 1.Plumb it traditionally with flow/return at the bottom, this would require me buying the...
  9. M

    Best way of reducing rad. Valve to 10mm

    Which is the best way of reducing a rad. Valve down from 15mm to 10mm. A soldered reducer or an internal reducer?
  10. chloeradhsaw

    Gurgling Noise From Rad When System Drained F&E Empty And Boiler Off

    My heat only gas boiler is drained from the boiler drain valve - There is no water in the F&E tank. The hot water vented cylinder is removed. So far so good Twice this evening I heard radiator gurgling noises which frightened the life out of me I cant seem to reproduce the noise and I cant get...
  11. ian.

    Dt30 or Dt25 Rad design

    When installing a condensing system boiler to an existing property, do you base your radiator design on Dt30 or Dt 25
  12. B

    Cold Rad's & return cool on another rad

    Sorry I have sort of asked this before, tried professionals but not great 1st experience hence DIY attempt attempt again. 2 completely cold rad's, another one get pretty warm, flow pipe hot, return v.luke warm. (Both rad's I have manually flushed really well) Hot water works fine, boiler return...
  13. R

    Reasonable quote for changing 2 rads?

    Hi all, We've sourced 2 new rads that we’re looking to get installed in place of our 2 existing ones and have been quoted £350 for a direct swap (including balancing and fitting TRVs that we are supplying) or £700 if we’d like the addition of the pipes being chased into the wall. I wanted to get...
  14. M

    Vertical rad bleeding issues

    So these damn problematic vertical rads again. I’ve had the Trv correctly fitted now but can’t seem to get rid of the air. The advice on here was to refill and bleed slowly which I did but now I’m literally bleeding it every day for two weeks now. About two seconds of air then another...
  15. E

    New column rad cold devastated

    New double panel column radiator Cold Turned off all rads not helped Checked trv pin seems fine Locksheild i think is ok see pic sttached Its new so didnt need to flush Cant really balance because the only thing that is hot is the copper pipes So instructions came with it about how it...
  16. Ian Howe

    Cold rad and manifolds

    Narrowed down a cold rad to this manifold, are they prone to blocking or is it more likely the microbore?
  17. S

    Vertical Rad issue on a 1 pipe heating system

    Evening guys, Just wanted to pick some brains about an issue i'm currently having with a vertical rad on a 1 pipe heating system. Kitchen that has been converted into an open plan kitchen diner. We've taken out a large double rad and installed 2 single verticals in different locations. One rad...
  18. E

    Rad not geting warm but no air in rad

    Hi I have conected a small rad with 15mm pipe fed from 10mm system there is no air in the read water is coming out no bubbles but rad don't get warm the rad its conected to dos get hot the 15mm pipes have to go up and over a small door and back down to the new rad what am I doing rong please
  19. T

    Kitchen knock through losing one rad. Btu for new single?

    Hi all. I'm knocking through my kitchen and dining room and will lose them rad that is currently un domingo room due to repositioning kitchen. New rooms size will be L 7.2m W 3.2m H 2.35m New French doors going in to replace dining window (2100 x 1750mm) and bigger kitchen window of 1.95 x...
  20. I

    remove bathroom rad and valves

    I have a combi boiler that supplies 5 radiators, I don't want to empty the system, I just want to remove the radiator and valves in my bathroom. I can remove my radiator by isolating both valves but I need to take off both valves to get the new plastic boards behind.I would just like to know the...
    • Ian Foston
    • Thread
    • america bathroom rad radiator remove usa valves
    • Replies: 2
    • Forum: USA
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