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pumps

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  1. K

    D curve breaker

    I have been asked by a customer to solve a problem, he has a 3 phase 20A D curve breaker supplying 3 single phase breakers 2 x 6A and 1 x 2A. The 6A breakers are supplying 2 pumps with a load of about 4A each. When 1 of the pumps are turned on, the 20A trips. Any ideas why? The earth loop...
  2. The Solar King

    Heat Pumps - Feeling my way

    Just back from a Logic Certification Heat Pump course. Quite informative. Whilst I really like the concept of ground source, its complexity and cost started to do my head in. I would rate the course as OK, but not excellent. Most depressing element was a number of neanderthals on the course who...
  3. P

    Sequential or random switching

    I have a rainwater harvesting system with three tanks each with a separate pump. I will have a pressure vessel and pressure switch to automatically start pumping when water is required. However, I do not want to run all three pumps together but one at a time. I need a switch which will ensure...
  4. B

    Air Source Heat Pumps and RHI

    Evening folks.... We don't install ASHP. So looking for some advice. Does a property need to be a Band D to qualify for RHI in the same way as FITs. I was surveying a property today for a pv system Old stone built 1905 house off mains gas grid. Sent their by their son whom we installed a...
  5. M

    Submersible pumps

    Evening guys, has anyone had any dealings with Mega Submersible pumps, good or bad. My new customer is tired of the pumps failing. Any recommendations welcome. The Hmax is 8.5m and the Qmax is 11m3/h, 230v, 550w. Identification No's "0930147EAN" and "Q55011". Pumping requirements: Height...
  6. T

    Good free course online for vsd pumps motor boilers 00etc

    Working with a lad from Schneider and he put me on to this site because i wanted a refresher on VSDs but it actually has a lot more, it offers accreditation,but that's up to yourself, the info is free just Google Schneider Energy university . just posting this as i spent long enough looking for...
  7. J

    Pond Pumps ?

    I've just had a call from a man who has 2 pond pumps that start up and run fine. The problem occurs when he turns them off it takes out the RCD. This guy has had a few electricians out already one advised to change his pumps which he has done. Last summer they worked fine and in winter he had a...
  8. T

    Air source heat pumps

    Hi, has anyone out there had any experience of the performance of air source heat pumps. I am looking to fit one at my place. We are not on mains gas so am looking to find a way to economically heat the house - we currently have LPG. The manufacturers make all kinds of claims for COP but I was...
  9. G

    Pumps running confirmation

    Hi team, Control panel for 2 submersible pumps, duty, assist. Need to come up with something to confirm pumps running, not just signal to do so. Was thinking ct on the outgoing connections but I would need a pair of voltage free contacts from this to create a confirmation signal. Is there a...
  10. R

    Condensate pumps

    Hi All My name is Roger and am new to here, I have a question on Condensate pump wirinig :) I have a condensate pump to wire up, there is the main feed and it also has a seciondary float switch that turns of the boiler (or switch an alarm) if the main float/pump fails. The question I have is...
  11. Mark.W

    Switching

    Evening Chaps I've got a switching conundrum that I was hoping one of you guys could help me with! I've been working on a heating system and the previous spark managed to run 2 pumps either together or independently with one boiler and a 2 channel programmer! I however cannot get pump 1 to...
  12. I

    Heat Pumps and thermal stores

    Looking at increasing the portfolio of technologies that we can do and been looking at Air Source Heat Pumps. On the face of it in the right situation these Air to water pumps seem to really have a lot going for them. When RHI kicks in even better. But I am getting a lot of conflicting...
  13. kkkkk

    Beer pumps wiring

    Hi all I have a job wiring/re-wiring a pub. Can anyone give me an idea about how beer pumps are wired, and any other relevant information to do with how they work? I appreciate there are different types, but this is a general question. I also wondered if it was possible for me to test the old...
  14. T

    Bubble Bursts on those installing Solar Thermodynamics

    We briefly looked at this technology and decided that there was no evidence to support claims being made for it. Got this letter from MCS about half an hour ago: "17th October 2012 Dear Solar Thermal Installer MCS has recently become aware of a number of products that are being sold into the...
  15. K

    Pumps /Controls

    Help I am working on a Biomass with District heating I have a 3phase pump for the boiler to accumulator and a single phase shunt pump these are straight forward enough I think. The head scratcher is: I have a 3 phase pump which delivers the heat to a heat exchanger in the properties and a...
  16. G

    solar pv in cyprus

    no i don't know why this forum doesn't support my shift key. however i'll persevere. i have a friend in cyprus who would like to run his swimming pool pumps off solar pv. does anyone on here know anything about cyprus eg is there the equivalent of a fit qestion mark. unlikely i think. what...
  17. G

    Whats the next big thing in Renewables

    HI all, What do you guys think the next thing will be with renewables, or what other areas are there thats worth it now, Heat Pumps,Biomass?? looking at something else other than PV now that seems dead, i assume that if you have the quality management system in place its pretty much the same...
  18. R

    MCS for Heat Pumps

    Evening all. This may be of a strange request but we are a south yorkshire based MCS registered company installing PV systems but are looking at adding air source heat pumps to our company. As you will all know in order to become MCS registered you need a job under your belt to be assesed on...
  19. R

    MCS for Heat Pumps

    Evening all. This may be of a strange request but we are a MCS registered company installing PV systems but are looking at adding heat pumps to our company. As you will all know in order to become MCS registered you need a job under your belt to be assesed on, basically i'm trying to find...
  20. T

    Installing Air Source Heat Pumps

    Hi, this is my first post. I am an apprentice wiring up a hot water cylinder cupboard(i think someone qualified will check it later!) I have a 10 core cable coming from the roof for the ASHP and have fed it into the junction box, along with cables for the time switch, 3 way valve, pump...

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