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Recent contents Top users
  1. B

    How to properly plum a utility sink with pump in basement?

    I just purchased a home and I would like to install a utility sink in the basement with a pump. Below is a pic of the room in the basement. The sink would go under the window. I have a pic of a diagram of the plumbing I would like to install. I am just a beginner and do not have much experience...
  2. J

    Grant Vortex Blue no power to CH pump

    Hi, I have an issue with my Grant Vortex internal combi boiler. Specifically the electrical side. Everything was working fine (with a dual channel Hive system) but then the central hearing stopped working. When looking it seemed like there were a number of loose contacts as when we moved the...
  3. S

    Auto Bypass Valve OR Proportional Pressure pump mode – how to choose?

    I have read that an Auto Bypass Valve (ABV) is not compatible with a pump set to Proportional Pressure (PP) mode. I have a recently fitted Vaillant EcoFit Pure 430 heat-only boiler + Vaillant SensoComfort weather sensing controls + 15 rads (12 with TRVs) across 2 CH zones + a static bypass...
  4. P

    Noise water pump, any

    Hi all, I’m looking for a bit of advice. A flat two stories up from mine has installed a water pump that feeds all of their outlets (shower, toilet, sinks, washing machine, dishwasher …) from a loft storage tank. Alas, the pump seems to be sending vibration down the walls and into my flat. The...
  5. J

    Pump control to thermostat wiring

    Hi Installing single zone ufl with Grundfos pump/mixing valve and heatmiser thermostat - not crystal clear from the diagrams how the control connection to LR/LS should be wired (i.e. red on the pump control diagram) Any advice much appreciated!
  6. J

    Water pressure - electric shower or water pump?

    Hi All, I hope you are doing well. My question is about the dilemma of installing an electric shower or a water pump instead? The hot water pressure in upstairs bathroom is a bit weak. I could get an electric shower installed but I also consider a water pump. What would you suggest? A pump...
  7. R

    Installing a new pump for Vaillant ecoTEC Plus 400 15kW. West London

    Removing pump and installing a new pump for Vaillant ecoTEC Plus 400 15kW Heat Only Boiler. Connecting the pump to the boiler and completing all wiring for the thermostat and consumer heating controller.
  8. R

    What is ideal pump size for Vaillant ecoTEC Plus15kW Heat Only Boiler?

    What is the ideal pump size for Vaillant ecoTEC Plus 400 15kW Heat Only Boiler? The property is a studio with 1 large room, a small kitchen and a small bathroom. I've been advised to use Grundfos UPS3 15-50/65-130.
    • raidac
    • Thread
    • boiler ecotec heat ideal pump size vaillant
    • Replies: 1
    • Forum: Boilers
  9. R

    Is Britherm pump a better choice than Grundfos

    Is Britherm pump a better choice than Grundfos for Vaillant ecoTEC Plus 400 15kW Heat Only Boiler Wiring is SPlan and the intention is to install Grundfos UPS3 15-50/65-130
  10. N

    Grundfos pump irregularities

    Hi everyone, We have had issues with our Grundfos UPS3 15-50/65 130 ever since installation. The builders created 3 sections in one space. Two in the kitchen and the third in the living room. The 3 sections have never worked in unison so one was disabled to leave one for the whole kitchen and...
  11. R

    Vaillant ecoFIT 415 heat only boiler. Connecting the pump and boiler?

    Vaillant ecoFIT 415 open vent heat only boiler. For wiring the boiler and pump, should I use the 3-way wire switch" solution OR a "remote switching" solution? The pump and copper tank are situated about 25ft from the boiler. I've been told that the 3-way cable solution doesn't work well with...
    • raidac
    • Thread
    • boiler heat pump vaillant
    • Replies: 6
    • Forum: Boilers
  12. alex567

    heat pump and water cylinder installed away from the house, pros/cons

    I'm planning to get an air source heat pump (ASHP) installed and I'm considering my options about the location of the water cylinder as I live in a small house and space is a premium. I was thinking about building a small insulated shed about 20 to 25 metres away from the house to put the...
    • alex567
    • Thread
    • cylinder heat house pump water water cylinder
    • Replies: 10
    • Forum: Renewables
  13. D

    Dry run protection for DC Solar Pump sourcing water from a borehole

    We are installing solar power irrigation systems for smallholding farmers in Rural Ghana, We have 12V DC 0.18kW (max 20A) pumps, there only power source will be a voltage varying from 15-20V coming from solar panels. The boreholes are narrow, therefore is not much room for a float switch, The...
  14. plumb_know

    preventing air ingress & pumping over when moving pump by boiler

    have moved a pump by new boiler so could wire for pump overrun as no live in airing cupboard, but now I am worried about air ingress into the system as system is under negative pressure. Anyone got any tricks to help prevent this?? or know how to get pump over to airing cupboard without...
  15. T

    Unknown pipe after pump

    Hello does anyone know what this pipe is which diverges from the main pipe after the central heating pump. It seems to connect to the return pipe from the cylinder, so I guess it isn't a bypass?
  16. S

    Why won't my GRUNDFOS UPS3 pump stop running?

    Hi everyone Some very helpful people on this forum (hi John.g) sorted me out with some issues with a faulty installation of a Grundfos UPS3 back in Oct/Nov 2021. My CH system has been running like a dream ever since. Until this evening. For months we have been switching heat and/or water...
  17. I

    Main combi eco 30 pump overrun

    Hi, I have noticed recently that when the central heating, set at 60 on boiler, goes off the pump no longer overruns for the period of 3 minutes like it always has. Is this a problem? With the dhw it does the 1 minute overrun still. Thanks.
  18. R

    loosing hot water flow when macerator pump goes?

    Hello I have a salon and the plumbing for the hair wash basins is taken from the toilet, so when we are washing hair and the water is a good temperature, when the pump goes the water goes cold it takes a wile to come back. It used to do it a bit and now its much worse. A plumber said it cant be...
    • Russell James
    • Thread
    • flow hot water pump water
    • Replies: 3
    • Forum: Bathroom Advice
  19. SteveRobert5a

    Checklist for continually running pump?

    I have a 23 year old Megaflo heating and hot water system powered by the original Thermecon oil boiler. One of the most common kinds of faults I get with this system is the continually running circulating pump. The upstairs and downstairs CH are separate circuits each with their own Danfoss...
  20. Z

    UFH pump robbing from Rad system

    Hi We have an UFH system part of the house (large kitchen / dinnner and utility room) and then Rad system for rest of house (10 rads). We have noticed in this recent cold weather when both UFH and Rad are on (ie thermostatic driven) the UFH is robbing all the hot water and not getting round...
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