pump

  1. K

    Does combi boiler need an external pump or not?

    My conventional boiler needs to be replaced. One engineer suggested combi with an external pump because water pressure in my flat is low, the other said there's no need for a pump. He even said that if the pump would have a detrimental effect on the boiler. Who is right?
    • Krzysztof
    • Thread
    • boiler combi combi boiler pump
    • Replies: 5
    • Forum: Boiler Advice Forum
  2. K

    fix the connector leak to water pump - emersion heater

    hi all, i need help to fix the leak from a pipe connected to the water pump via flexi pipe and it is feed from the immersion heater. I have emptied the water tank in the loft and also closed the main stopcock. still the leak is on - hoping it will eventually stop. I have not idea how the...
  3. av2597

    Water Circulator Pump Bust After Only 1 Year!

    Hi all, we have a water circulation pump to bring hot water from our woodburning stove and send it to a thermal accumulator tank. We've just started our second season and it's broken. I thought these were meant to last 10 - 15 years? We don't have a domestic water supply - we use water from our...
  4. A

    Need equivalent pump to Branston varispeed 50

    Wanted a new shower pump equivalant to a Branston Varispeed 50 After 12 years my shower pump has stopped working and it looks as though this type of pump is not made now. These are the details on the pump Bristan Varispeed 50, High performance Water Pump, Duel Cycle Continuous, and this number...
  5. P

    Unvented Cylinder Single coil heat pump vs twin coil solar

    Hi, I'm looking to purchase a 300L unvented indirect cylinder to work with a standard heat only boiler. I may have solar panels in the future, but likely the PV kind rather than the thermal kind, and won't be having heat pump in the future. So the cylinder would be connected to the boiler at...
  6. Zoe100

    Help Please, Salamander Accubust Water Pump

    Help pls, I’ve got a Salamander Accubust water main pump it has an in & out & third port for an accumulator can I blank off the accumulator port & use it as a mains water pump without an accumulator? TIA
  7. D

    UFH fed by heat pump in 120 year old red brick

    Hi, I have a 3 storey house built in 1904. We put UFH in the house about 20 years ago. Works well with newish gas boiler. Just curious... I know heat pumps are meant for tightly insulated modern house ... but.. Question: Given that my UFH is always at a low temperature - Could I feed UFH with...
  8. R

    Replaced Central Heating Pump - still have issue

    I have a conventional system, Potterton Prima Boiler, into a Pump into a Motorised Valve that feeds the Radiators and/or the pipes in the Hot Water Cylinder. Analogue Controller with slide switches (replaced 2 years ago) and analogue Room Stat and Hot water cylinder Stat. I'm just an amateur...
  9. B

    Heating not working - Grundfos pump issue

    Hi all, I have an old Combi boiler for which the heating has stopped working. The hot water is fine, and I think I've isolated the problem to the pump. The pump is a Grundfos Alpha2, and it has usually has two numbers, but it is instead showing two dashes ( -- ). I think the propeller isn't...
  10. M

    Portable wast water pump

    Hi, we have a sewage pump in a small septic tank that pumps to a shared Klargester about 50 meters away. Our pump broke after a power surge and has been a chaotic experience to get it replaced. So, I'm thinking about a backup plan for when/if the new pump breaks. The tank is so small it fills up...
  11. S

    No heating flow. Pump and diverter working, what else could be wrong?

    Hello all, I have a WorcesterBosch Greenstar 42CDi classic combi, which is providing DHW fine, but not heating. Was working fine in spring, probably not been used until recently now it's colder. When heating is called for, the boiler fires up ok but soon shuts down the heater as the...
  12. D

    Wood burning stove with air to water heat pump

    Is it possible to install a wood burning stove with an air to water heat pump? I was speaking to a few plumbers who have said this is not possible as the air to water system is a pressurized system and the stove needs to be in a vented system.
  13. B

    Grundfos UPM3 pump won't turn despite being clean

    Hi there, I've got a stuck Grundfus pump again, but this time the usual tricks don't work. I took it out, cleaned it, still won't turn. Hand pressed against the rotating bit, screw pressed in, no movement. Tried the same both plugged and unplugged. The black propeler thing won't budge. Is it...
  14. I

    Heat pump cylinder in outhouse in Scotland

    My landlord's great at getting all the Scottish government funding that's going, and there's full insulation, double glazing, an airsource heat pump and a Mitsubishi Ecodan unit. The Mitsubishi installation manual says in big letters "The cylinder unit MUST be located indoors and in a frost free...
  15. C

    hot water circulator pump vibration

    Hi everyone, My flat is located next to a communal boiler with a hot water circulator pump ( Grundfos UPS 15-50N Secondary Hot Water Circulator ). The pump is noisy and vibrating. Would installing a more powerful pump solve the problem? Many thanks for your help!
    • ChristineLondon
    • Thread
    • hot water pump water
    • Replies: 2
    • Forum: UK Plumbers Forums
  16. M

    shower pump always on

    Hi - I am looking for help regarding new shower pump. -its new -it always stays on when the power is on. It should only switch on when water goes to the shower -its noisy Can anyone advise please? Many thanks Iain
  17. K

    Mains boost pump in top-floor flat

    Background I have a small one-bedroom flat in the roof space in a victorian house. There are three floors below and each floor has a single one-bedroom flat. The mains pipe bringing water into my top-floor flat is 15mm copper pipe. There is a water meter in the flat and a stop valve. There is...
  18. IMRS250

    Anyone work for Octopus? Airsource heat pump upskill role

    Hi all, I have recently returned to the industry and have applied to Octopus for the upskill role into air-source heat space installs. Does anyone work for them on here? Just wondered what people's thoughts were on them as a company and if anyone is fitting air source what they think of this...
  19. C

    specialist in pump installations

    Please help, I have purchased two different pumps, and I don't want to get the 3rd one wrong too. I need 5 litres in 15 seconds in order to operate this smart toilet: https://uk.homary.com/item/modern-black-smart-onepiece-128-gpf-floor-mounted-elongated-toilet-and-bidet-with-seat-42877.html I...
  20. notsure

    Grundfos Pump Domestic, Speed control

    I'm making my own replacement for a boilermate 2000 controler. I need more electical information on the pump so I can work out how to control the speed on it. does anyone know where I can find detailed electical info for this not just "on off" it looks like the original controler used PWM to...

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