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  1. really interested to hear what you find out....

    really interested to hear what you find out. would like to move for heat pump in my home also , but the lack of evohome documentation on the subject of exactly how you set it up for heat pump (both...
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    I have a MyEnergi Eddi to dump PV into the...

    I have a MyEnergi Eddi to dump PV into the cylinder. Since october I have set a manual boost on that between 0030 and 0430. That means it runs at full power between those times (until the tank is up...
  3. not to answer your question but just a suggestion...

    not to answer your question but just a suggestion - translate the diagram into english, that may widen the chances of getting an answer.
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    hi I was wondering why you were setting it so...

    hi
    I was wondering why you were setting it so high. fortunately, I have the exact solution for you as I have been there and done that! There is a demand terminal box for these boilers....
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    its in a sealed system but exact same boiler. I...

    its in a sealed system but exact same boiler. I run mine at "4" as much as poss, flow temps typically 50-55. thats enough to heat my house (210m2, 1973 brick detached). Of course every house is...
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    I have the same boiler and it behaves the same...

    I have the same boiler and it behaves the same way. 26kw with a 7kw min. Its been in 6 years and has been very economical, my usage is way below that of the EPC, and until last week (when the flow...
  7. Thread: X-Plan

    by sandyman
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    I use this x-plan setup. My heat-only viessman...

    I use this x-plan setup. My heat-only viessman boiler will not produce the high flow temps needed to heat a DHW cylinder unless its "DHW demand" terminal has voltage applied. without that , the...
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    hi all really interested to hear how those who...

    hi all
    really interested to hear how those who already have heat pumps with evohome have it setup. in particular, what plumbing topology and what controls what? referring to the evo installation...
  9. I've been playing with my settings after...

    I've been playing with my settings after replacing my bypass valve, which was bust. with the bypass set to a high value, pump in PP3 mode, warm up times are really slow, pump stays at low speed, ...
  10. yes absolutely. I was using the close-up IR gun...

    yes absolutely. I was using the close-up IR gun technique for ages - had black insulating tape everywhere - until I got the thermal camera. its proving extremely useful.
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    looking at that boilers datasheet, seems to me...

    looking at that boilers datasheet, seems to me its a storage combi?
    Install manual P97 covers how the storage cylinder is controlled:


    Heating the DHW loading cylinder from cold
    The heating...
  12. thanks both. my valves are already honeywell...

    thanks both. my valves are already honeywell valencia two-ways everywhere, but I don't know which side they are fitted off the top of my head, I will have to go round and check. balancing may well...
  13. hi, I would agree on the lack of balancing, I...

    hi, I would agree on the lack of balancing, I know its not been done.. Just that with 20-odd rads, that is a right **** of a job. I have a 22mm 3 zone distribution from a central point, with 15mm...
  14. evohome HR92 on all the rads. I've played with...

    evohome HR92 on all the rads. I've played with doing it by scheduling, not feasible. the rooms in question tend to be used later in the day than others - our tv room/snug and sitting room - but if...
  15. alpha pump flow rate not enough for some rads

    I have 20 rads, HR92 on all of them, alpha2-50/60 pump. viessman 26kw boiler. sealed system. Alpha pump needs to be set on PP3 mode for noise avoidance (Avoid the usual very noisy / resonance...
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    application 01.00.02.01 wifi 01.00.02.00

    application 01.00.02.01
    wifi 01.00.02.00
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    mine is the 20's, measured by the same method...

    mine is the 20's, measured by the same method (Draytek data flow monitor).
    I haven't wiresharked it...
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    did anyone find a way to get a new ribbon cable?...

    did anyone find a way to get a new ribbon cable? I crashed the hoover into one last friday, ribbon cable snapped clean through as the screen fell off :-(.
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    when my son was in a cot, I used a panel electric...

    when my son was in a cot, I used a panel electric rad on the wall in his room overnight with a built in timer, to keep his room at 16. the main heating for the house was still gas - even for his...
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    yeah missed the second post. somewhat OT but...

    yeah missed the second post. somewhat OT but curious - what solar thermal system you got that's still giving useful output on 13 dec? I have a 12 year old drainback, its gain is zero this time of...
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    no, that sounds very odd. when my solar has...

    no, that sounds very odd. when my solar has pushed the tank temp over the temp set on the evo, then the evo HW kit doesn't fire. which is what you'd expect (thermostat says no, to rob a phrase from...
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    I had one HR92 die (Sensor fault, it kept saying...

    I had one HR92 die (Sensor fault, it kept saying it was frosty inside the house in may) after about 6 months, and now I'm getting an intermittent E1 sensor fault on another one. power down and...
  23. I've used lightwaverf relays for a couple of...

    I've used lightwaverf relays for a couple of things, they may help?
    TBH your explanation is a little lacking on detail, can you be a bit more specific? diagram?
  24. I used optimum stop for a while, I always had to...

    I used optimum stop for a while, I always had to use override to defeat it, editing schedule would not. gave up on it in the end, e.g in the lounge, with a setpoint of 15 @ bedtime, we'd be sat for...
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    so my boiler is also 12 months old install, so...

    so my boiler is also 12 months old install, so you ought to expect they are same build!

    not quite right on the priority (took me ages to find this first time round)...
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