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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. J

    Hot water issue

    Hi there I am having trouble with hot water coming through cold taps its on an unvented system in a large house with over 4 bathrooms I have installed a secondary return on system with a bronze pump going back into cold main at cylinder via a swept tee and also a non return valve to prevent...
    • James 1981
    • Thread
    • advise hot hot water issue james qualified return unvented water water issue
    • Replies: 6
    • Forum: Plumbing Jobs | The Job-board
  2. N

    New Worcester 34cdi classic. Hot water ok, Flow hot, return cold, all rads cold

    Have new boiler installed. Central heating and hot water all working before replacement. Flush etc all carried out before replacement. Hot water heats perfectly but no radiators heat and no heat in flow to any radiator. Tried crossing flow and return but no joy. Doesn't seem to be a block in the...
    • Neilly
    • Thread
    • classic cold cold radiator flow hot hot rads hot water return water worcester
    • Replies: 9
    • Forum: Plumbing Jobs | The Job-board
  3. A

    Conflicting advice on flow and return for new install

    I need some advice please. I have had several quotes for a central heating and hot water installation for a large 3 storey house with 22 rads (inc towel rails) but the advice I am receiving is conflicting and just wanted a bit of insight please. Chap number 1 suggests 22mm flow and return in...
    • ArchieC
    • Thread
    • advice boiler floor flow flow and return house install number return
    • Replies: 24
    • Forum: Plumbing Jobs | The Job-board
  4. J

    bleeding flow and return from boiler to UFH manifold!!

    Hi, I have just installed my Underfloor heating. 4 zones in total and pressure tested after filling each loop. I have now connected up to the 22mm flow and 22mm return (new install where the plumber who installed a new boiler left these ready for me). The current system have a radiator curcuit...
  5. P

    Installing magnaclean on gledhill boilermate

    Got to install a magnaclean on a boilermate and flush the system. Would you guys install it on the return to the boiler. Or the return from the rads? Not sure which will pick up the most muck.
  6. K

    Hot water Secondary return quires, 5 bathrooms

    Hello I'm after advice on the installation of a secondary hot water system . The system will be suppling five bathroom s, a kitchen , cloakroom and utility room in a barn conversion. I usually install on a small domestic level so this is a bit bigger than the norm. The hot water and heating...
  7. D

    NEW Veissman vitodens 100 open vent problems

    Hi Everyone hoping someone has some bright ideas for me! just did an install removed an old ideal ff and replaced it with a veissman as above. first day of install yesterday, all piped ready to go, I tried to refill the system, blockage in the dreaded feed / vent tee, cut that out replaced...
  8. F

    Return line aquastat

    A new Baxi Duotec has replaced a old combi unit that had short cycled (when 2 radiant floor loops were added to an old cast iron rad system), and the solution was to put a separate aquastat on the return line. The Duotec appears to be able to modulate such that the return acquastat is...
  9. P

    Feed and return pipe size

    Hello, I need some advice from the experts please. As part of a full refurbishment of our house we had a completely new heating system installed: Vaillant Ecotec Plus 630 system boiler (30kW), three heating zones (loft = 2.5kW total radiator output, first floor = 6kW, ground floor = 10kW) plus...
  10. T

    w/c pan fixing points directly over c/h 22mm flow and return pipes.

    The subject line says it all! The new close coupled pan/cistern I have to fit has its fixing holes directly over the main 22mm c/h pipes. I'd have to pack the cistern off by about 30 mm. to clear the pipes. I'll fix with some short screws that don't penetrate the flooring but what else can I do...
  11. leesparkykent

    secondary return on hot water.

    Hi plumbers/engineers...Lowly electrician here :biggrin: I've built a new extension on the back of the house and also linked the barn/workshop to the house. I'm converting the old workshop to habitable space at the same time as fitting out the extension. At the back of the old workshop I've...
  12. AlexGas

    Horley plumber offers reward for return of tools worth £10,000...

    Horley plumber offers reward for return of tools worth £10,000 after his van is stolen | Surrey Mirror
  13. F

    New boiler flow and return temps

    Hi all, Just had my new boiler installed. Went from a heat only with hot tank to a combi boiler. Its a Ideal Logic+ 30 and in the menu it shows sensor values. I understand there should be a large difference between flow and return values but quite often when running there is only a 5 degree...
    • friendlyaviator
    • Thread
    • boiler flow flow and return new boiler oil return should sounds system temps
    • Replies: 26
    • Forum: Plumbing Jobs | The Job-board
  14. D

    Upstairs fine, downstairs mainly cold

    I have a Vaillant 30Kw System Boiler. It's a fully pumped and pressurized system. There is a hot water storage tank in an airing cupboard upstairs, with a single zone valve that allows hot water into the entire CH system, or stops it. All the upstairs radiators get hot, but only a very few of...
    • DGClarke1
    • Thread
    • circulation cold downstairs mainly radiators return system upstairs valves
    • Replies: 4
    • Forum: Plumbing Jobs | The Job-board
  15. U

    Location of non return valves

    Hi, Should I have a non return valve on the heating and another on the hot water. I have a two (separate) pump system and there is no non return valve on the hot water. Only on the heating. What's confusing me is it's been working for fifteen years and I dont recall the hot water getting hot...
  16. M

    Cylinder stat that works the opposite way to the standard ones

    Does anyone know if I can buy such a thing as a Cylinder stat that works the opposite way to the standard ones? I have a very basic heating system off a solid fuel back boiler plus an electric immersion in tank for back up. When the pump is off the water only heats up. When we turn on the pump...
  17. M

    Flow and return pipes

    The flow and return pipes on a CH system, is it usual to have the flow split off into two, i.e. one branch going off upstairs and the other continuing downstairs? Likewise with the return merging into one back to the boiler in a "T" shaped connection, i.e. the return from upstairs and the return...
  18. W

    Stopcock on vented indirect cylinder return?

    Hi. I have a vented indirect heating and water system. I have noticed a stopcock on the hot water cylinder return (see red thing in picture below). Can anyone tell me what this stopcock does/is used for? Grateful for any help.
  19. N

    Magnetic Filter Location

    Good morning all A quick question where do you install the mag filter on an external boiler installation? I know ideally it should be on the boiler return at its lowest point before the boiler. I am just a bit concerned about freezing etc. As I don't want it installed in the loft either which...
  20. ShaunCorbs

    s plan

    any one see anything wrong with this eg t rule etc sealed system as normally any suggestions welcome and thnx again
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