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flow issue

A cash flow is a real or virtual movement of money:

a cash flow in its narrow sense is a payment (in a currency), especially from one central bank account to another; the term 'cash flow' is mostly used to describe payments that are expected to happen in the future, are thus uncertain and therefore need to be forecast with cash flows;
a cash flow is determined by its time t, nominal amount N, currency CCY and account A; symbolically CF = CF(t,N,CCY,A).
it is however popular to use cash flow in a less specified sense describing (symbolic) payments into or out of a business, project, or financial product.Cash flows are narrowly interconnected with the concepts of value, interest rate and liquidity.
A cash flow that shall happen on a future day tN can be transformed into a cash flow of the same value in t0.

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  1. C

    Outer flow limited, unknown problem to solve

    Hello, recently our boiler stopped working properly, causing a lack of heat in our 14-radiator splitter in 3 storeys. having only one boiler at time it kind of working, only for one at time (and partially hot), depending on the priority in the system. We contacted Valliant for assistance...
  2. S

    Flow temperature discrepancy

    Morning all, I have a Worcester Bosch 8000 life 40kw boiler on system with 7 radiators and the boiler is located in the loft of a 1907 end of terrace house. It has been range rated down to 50% and I currently have the flow temperature set to 64, due to slow warm up. I recently purchased a...
  3. A

    USA DHW Mixing Valve Output Fluctuates

    Our building has a boiler that provides both hydronic heat and domestic hot water. It's been working without any serious problems for 10+ years. The DHW is heated via a coil and goes through a Holby mixing valve, which a few months back had a problem with the mix exceeding the maximum safe...
  4. G

    Reverse flow conundrum

    Hello all, An issue some advice would be great on if you can. Boiler with no leaks, holding pressure fine with a reverse flow FA fault code. If you drain the system and refill, obviously bleeding pump and rads, the whole things runs smoothly for about 5 to 7 days. At a random point it will...
  5. S

    Boiler short cycling/ Flow issue

    Dear forum readers, I have had quite a lot of work done to my CH system including TRV replacement, new radiator installation, new pump installed and several repairs as a result of the work including repair of leaks under the concrete floors! However, I am still faced with some serious...
  6. N

    Vokera Linea 28 Combi flow issue

    Hi all, New to the site, hoping someone can help me with some advice on an issue I'm experiencing with our Vokera boiler. I recently noticed a decrease in the hot water flow rate, the temperature is fine, in fact everything works as it should on the boiler, it's just the rate the hot water...
  7. N

    Cool radiator - flow issue? Help please!

    Hello, I am looking for some advice please to resolve problems with our central heating system. To give some info about our system: We have a 2 year old regular 100W WB1B Viessmann 19kW Regular Boiler in a downstairs cupboard with an Ariston 210L unvented cylinder and Grunfos Alpha 2L 15-60...
  8. J

    Main 30 HE flow issue

    Hi guys I wonder if anyone could please shed some light on this issue... Main 30 HE combi fine on HW, and CH fires but very quickly reaches max temp (80) iirc Baxi tech help went much help tbh, stating the bloody obvious as usual (restriction, etc) I have changed the pump, which made no...
  9. J

    Back Flow Issue

    Evening all! Went to look at a job today, customer has fitted a kitchen sink which backs onto a wall that has a shower on the other side. Its a low level tray and the waste has a poor fall (very minimal) and is very very difficult to get to. When the sink is full and empties it backflows through...
  10. H

    Radiator Flow Issue

    I have a 3 bed terraced house with ground floor fully concreted so all pipes feeding the ground floor radiators are dropped from the first floor. I have a Combi Condensor Valliant 837 Boiler recently installed and rads on ground floor dont heat up uintil all rads on 1st floor have heatered and...
  11. J

    what's this for..... mixer shower flow issue

    Hello, Can anyone advise? No cold coming to my shower (since combi install). Have adjusted everything I can see/reach/adjust but nothing working. The thermostatic mixer has these two screws on each water feed (see picture). Can anyone tell me what they adjust? The one I can turn seems to...
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