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return

In finance, return is a profit on an investment. It comprises any change in value of the investment, and/or cash flows (or securities, or other investments) which the investor receives from that investment, such as interest payments, coupons, cash dividends, stock dividends or the payoff from a derivative or structured product. It may be measured either in absolute terms (e.g., dollars) or as a percentage of the amount invested. The latter is also called the holding period return.
A loss instead of a profit is described as a negative return, assuming the amount invested is greater than zero.
To compare returns over time periods of different lengths on an equal basis, it is useful to convert each return into a return over a period of time of a standard length. The result of the conversion is called the rate of return.Typically, the period of time is a year, in which case the rate of return is also called the annualized return, and the conversion process, described below, is called annualization.
The return on investment (ROI) is return per dollar invested. It is a measure of investment performance, as opposed to size (c.f. return on equity, return on assets, return on capital employed).

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  1. M

    Non return valve failure?

    Hi there, All was good until one day the hot water suddenly started running quite a lot cooler. Putting my hand on the output at the boiler it's still hot there so I'm guessing there's a problem with cold water feeding into the hot water somewhere along the line. I have mixer taps on two...
  2. D

    Radiator return valve shutoff issue

    Hi, I need to remove some radiators for redecorating and went to try and shut off the valves either side of my rad. I have TRV on one side and on the other side I noticed a blank top with no valve or peg sticking out that allows you to turn on or off (see pictures). I checked the other rads in...
  3. R

    Combi boiler - Return temperature going up

    Hi, The outlet of all my radiators are at 55°C, but the boiler keep showing the Return Temperature is 60°C (and keep raising at 1°C/min rate) Also the flow temperature keeps going up above the set point and when it reaches +5°C above the set point, the boiler shuts down (even before the room...
  4. Bottom

    Thermostatic Valve, fit to Flow or Return?

    I am trying to install a new single vertical radiator and need to know if matters if the thermostatic valve is connected to the flow or return pipes.
  5. S

    Boiler return temperature

    WB 4000 installed a few months back, just balanced the 7 rads - managed to get around 15 degrees delta across most rads. Not quite the 20 degrees but still. Flow set to 60 degrees for now. 1.Obviously I want to ensure the return temperature into the boiler is below the 55 ish degrees needed for...
  6. R

    Boiler Return temperature

    Wb 4000 recently installed, and just balanced the rads with around 16 degree delta across most rads. I'm trying to make sure that the return temperature to the boiler are less than 55 degrees to ensure condensing is occurring. But in the service menu it only shows the primary heat exchanger...
  7. P

    Drain down/flush options for combi return that goes up not down.

    Hi All This is following on from thread I made a few days ago but can't seem to find I'm in a bit of a bind with my CH design where I want to sort all of my rads and do some other bits including fitting a filter but I'm stumped on how to drain down due to how the system is put together...
  8. P

    alternate straight through CH return valve for combi

    I'm in a bit of a bind with a current CH install where I need to install a filter prior to a flush but no where to install My issue is the return on the combi (ideal 35) runs directly behind the boiler then up through the ceiling so I have no clearance to even attempt to snake it out to fit a...
  9. G

    Flow / return pipe layout - is this sensible?

    Hello folks I've moved into a property last month and started to note things that may need looking at. Some of the radiators on the ground floor aren't getting very hot, I've had a few passes of balancing to no avail, In light of the above, I took a look down in the subfloor yesterday to take...
  10. Z

    Vailant ecotec Flow Return f23 problem

    Please can anyone let me know if the NTC thermostats are on the correct way around?? I did have problems with the return pipe heating up before the flow so I'm thinking the last plumber may have swapped them around somehow. Havin now reconfigure the central heating i've plumbed in all the...
  11. Ant0912

    Flow & Return firebird C26 combi oil boiler

    Hi, can anyone tell me which pipes are flow and return please. I removed old leaking 2008 C26 firebird oil boiler in June . We have now completed damp proofing works & I need to extend these 4 pipes to go through the wall and into a new boiler room. This area will then be stud wall and...
  12. Z

    Return pipe hotter than flow from boiler

    Seems strange and I may be reading the MI wrong but i dont understand how the return pipe seems to be hotter than the flow. I have a Vailant EcoTec 438 conventional condensing boiler. Here's a photo of the install. You can see the plumber put a Magnaclean on what i thought is the return flow...
  13. H

    Requirement Circulation pump for the hot water secondary Return

    Silly question (and might already been asked 100rds of time) - I am specifying a circulation pump for the hot water secondary (circulation) return to reduce the wait for hot water. HW is coming from unvented cylinder with a secondary return connection. The secondary return is almost straight...
  14. J

    Pumped return worcester 18ri

    Hi all I've got a customer with a kingfisher in a downstairs cupboard with gravity hot water and pumped heating. The cylinder has the vent on the flow to cylinder and cold feed on the return. I plan on installing an 18ri with an s plan kit and wireless cylinder stat. My question is if I pump...
  15. Eddiez

    Cylinder return valve?

    Ever since the cylinder return balancing valve has been messed with by my kids it hasn't been hot like before what can I do? (as previously I've been told to leave it fully open )
  16. C

    Cut flow and return pipes

    Hi , need to cut flow and return pipes and hot and cold pipes from boiler to put back into wall vertically approx 3 inches , the pipes in question are 400mm below combi boiler but approx 4mts in distance horizontally , if I was to drain a radiator (I don’t have a drain valve ) would this remove...
  17. C

    Fitting non return valve

    The discharge hose from our washing machine comes out of the machine, runs about five feet along the floor under the work surface and then goes vertically up under the sink where it joins the sink discharge pipe. Every time we empty the sink, the water often goes back down the hose and even...
  18. H

    How to best measure flow and return from boiler?

    Hi there, I have the following system boiler setup with a low loss header and four different circuits. I've set the boiler flow to different levels between 65 to 70 degrees but the surface temperature readings never seem to reach much above 55 degrees into the LLH - I have tried a clip on...
  19. 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...
  20. B

    will a non return valve to my mains help with low presure?

    will a non return valve conected to my mains help with low presure?.
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