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circulating

A circulating library (also known as lending libraries and rental libraries) lent books to subscribers, and was first and foremost a business venture. The intention was to profit from lending books to the public for a fee.

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  1. J

    Central heating not circulating after New Navien Combi fitted to Santon Premier system.

    I enjoy a pint at my local pub/restaurant owned by a hardworking Chinese family. I have had many years experience on property maintenance and they asked for my help. He had an old LPG gas boiler feeding a Santon Premier unvented cylinder feeding 23 radiators and hot water for the kitchen. New...
  2. M

    Grundfos UPS2 15-50/60 circulating pump problem

    Hi, I'm new to this forum so I hope I've posted this in the right place. I installed a Grundfos UPS2 15-50/60 (part number 98334549) circulating pump into my oil fired central heating system 4 years ago. Recently on the boiler firing up the pump has not started, there is an intermittent...
  3. mgw

    Temperature of circulating coolant what difference does it make?

    Clearly if not hot enough the house will not get warm enough. However had some problems with my oil water heater for central heating and domestic hot water not lighting, the engineer came and adjusted electrodes, and now seems OK, but at same time he turned up the temperature of the water a bit...
  4. B

    Why Does My Hot Water Circulating Pump Bang When It Starts Up?

    I have recently had a new boiler and circulating pump installed keeping the hot water cylinder. I have the hot water timer set to come on for an hour each morning but when the time is reached, a loud bang comes from the pump which can be heard all over the house. Can anyone please suggest what...
    • Brian
    • Thread
    • america circulating hot hot water pump starts usa water
    • Replies: 27
    • Forum: USA
  5. V

    New circulating pump. Low flow

    Hi guys. I live in a bungalow with 14 radiators. Closed loop heating system The heating is zoned so that individual areas or hot water can be independently heated. All radiators and heating cylinder are at ground level. My boiler is 7 meters away from the house in the garden. 11 meters...
    • vdcfx1
    • Thread
    • america circulating flow low flow new pump usa
    • Replies: 17
    • Forum: USA
  6. O

    Grundfos water circulator not circulating

    Hi, I have a Grundfos UP15 42RUC7 circulator which doesn't appear to be working. the impeller moves freely when I spin it manually but when there is power tot he device all I hear is humming but the impeller doesn't turn even though it does not appear to be stuck. Also, oddly I can not find my...
  7. LouiseSJPP

    Replacement for Grundfos circulating pump

    I need to replace a broken circulating pump, Grundfos UP20-BXUT. I'm struggling to find one (I live in France) and wonder if there's another make that would fit into the existing plumbing? Alternatively, as it's the motor / pump rotor that seems to be sticking, could I buy a basic Grundfos...
    • LouiseSJPP
    • Thread
    • circulating grundfos pump replacement
    • Replies: 4
    • Forum: Canada
  8. S

    VENTED central heating system - water circulating through header tank

    Two years ago, I requested a fully qualified plumber to change the location of the hot water cylinder in a vented central heating system. I wanted to move it from the first floor to the loft, which he did. During the last two years, I have often noticed when I have been up in the loft that the...
    • Saturn
    • Thread
    • central central heating circulating header header tank heating heating system hot water system tank through vented water
    • Replies: 5
    • Forum: Plumbing Jobs | The Job-board
  9. P

    Replacing DHW circulating pump

    Hi everyone Cross-posted this from the commercial section, as it looks like nobody has commented on anything over there since mid January. I have a dead pump on my DHW This monster pushes water around the heating coil of s 210 litre unvented cylinder. That's all It used to be 2 cylinders...
  10. P

    Replacing DHW primary circulating pump

    Hi everyone I have a dead pump on my DHW This monster pushes water around the heating coil of s 210 litre unvented cylinder. That's all It used to be 2 cylinders, and will be again at some point (I have questions about that too but I'll create a new thread) My question is - does anyone...
  11. D

    Heating not circulating

    Hi, A new customer has contacted me stating a plumber fitted a new radiator for them recently and a few isolation valves and now their heating isn't working. I went out to view and couldn't see anything obvious other than the pump not circulating past its top valve. The only other thing is...
  12. tonyt

    circulating pump setting

    Hi, I am asking here because I have seen a range of answers to questions about pump settings, and some YouTube videos that do not seem right to me even though made by paid plumbers (I won't use the word 'professional' as I reserve this title to those who are trained, qualified and use their...
  13. B

    Circulating pump for Multi zone?

    Hi guys, I’m in the process of ripping out an old one pipe system and replacing it with a two pipe, feed and return. The new system will be on two zoning valves one for upstairs and one for downstairs. Originally i wanted the system on a single stat and single zone valve... with a flow of 0.477...
    • Beano10
    • Thread
    • circulating forum multi plumbing pump zone zone valve
    • Replies: 4
    • Forum: Plumbing Zone
  14. Gazzt

    Circulating pump valve nuts

    does anyone have tips on getting seized circulating pump nuts off. It's especially annoying in tight boiler houses. All suggestions welcome :)
  15. T

    Circulating Pump Replacement

    Hi everyone, Well...with my luck, my circulating pump has crapped out leaving us freezing! Id really appreciate some help choosing a replacement. I have a 2 bed flat with electric Trianco boiler and closed Y plan system. Ive bled the system and while spinning the shaft/bleed screw the motor...
  16. C

    Uneven Heating - Is My Circulating Pump Big Enough

    I live in a large draughty old house with a 5 year old heating system which was installed from scratch (new rads, pipes, boilers, etc. nothing old left in the system). The plumber's no longer in business. The system has two 35kW system boilers connected through a low loss header and then has a...
  17. S

    Venting a return circulating pipe from boiler (open vented system)

    Hi I am thinking of modifying the pipework to my Baxi 24 solo he. At the moment the feed and return both point upwards. I intend to feed the return from the bottom, so I will need a vent on the return, any suggestions of the best way to go about it. I am thinking of removing the supplied return...
  18. D

    Air circulating after 40 minutes

    I have a problem that try as I might I can't solve. It all started when I changed a rumbling UPS for a new UPS2 pump. After 40 minutes I can hear some gurgles of air / gas entering two radiators. This carries on for a few minutes and then stops. I bleed this off and the same thing happens the...
  19. Gazzt

    New smart circulating pump/ are they win or bin

    Do you like the new smart circulating pumps or prefer the standard circulating pumps, plumging suppliers in northern Ireland report they have alot of returns of faulty smart pumps.
  20. B

    What replacement circulating pump do I need?

    Hi there, I think my pump is on its way out and want to replace it before winter hits. It is not a recognised brand or model number so I am struggling to understand the type of pump I need to buy for a like for like replacement. There are some numbers in a table on the head but I don't know...
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