Search results

  1. C

    Boiler above Hot Cylinder

    So... Does that mean it's OK to have the pump below the boiler? At present the Cold Feed and Expansion are set up to join just under the pump at about the correct 150mm apart. However, my expansion is nothing like the "450mm Minimum" above the surface of the F&R tank (which is being replaced...
  2. C

    Boiler above Hot Cylinder

    I've looked at this document from Vaillant and on page 15 it shows the "recommended relationship of pump cold feed" etc. Obviously these must be set up right and my alignment would not go against this but the pump is shown above the boiler. Am I reading too much into this...
  3. C

    Boiler above Hot Cylinder

    I need to move (and replace) the Boiler from the (downstairs) kitchen to the (upstairs) airing cupboard. The cupboard is 500mm wide but 1200mm deep. Ceiling is normal 8ft. It seems sensible to have the hot water cylinder on the floor and the boiler above it. All the diagrams I've seen show the...
  4. C

    Pump Boosted water system - fixed

    I'm not an expert but got called to the Mother-in-law today for "no water". It's a development of assisted flats, all single level. My wife confirmed the lack of water before I arrived so I started with the external mains tap (on the basis that the local youths might have interfered with it)...
  5. C

    Grunfoss 15-50 Noise

    My 15/50 was making a similar noise. Sometimes it would quieten down but the noise would steadily return. I also found, when it was running quietly, that bleeding the air from the screw provided above the valves just brought the noise back. I've now fitted a 15/60 and all is silent.
  6. C

    Brown rust blockage in copper pipe? (see pics)

    Thanks all. I'll drain down and open up the compression joint to poke about. If it's as bad as the return circuit I'll renew from the pump shut off down to the floor (about 18 inches) and cut the vent so that it is within 6 inches of the feed. Should then look something like this... 0...
  7. C

    Brown rust blockage in copper pipe? (see pics)

    So a maximum of 6 inches between expansion and feed. But how far should the feed be away from the pump?
  8. C

    Brown rust blockage in copper pipe? (see pics)

    The photo didn't work. Try this...
  9. C

    Brown rust blockage in copper pipe? (see pics)

    After the unkind comments about my Photoshop skills I now attach the original photo (with just labels) I am going to change the pipes and still need to know how close the feed and expansion should be. And the gap to the Pump. You can see there is quite a gap after the expansion before the...
  10. C

    Brown rust blockage in copper pipe? (see pics)

    Yes I did photoshop it. Blacked out all the surrounding then had to show the pipes hidden by the new returns fitted last Tuesday. But that it is the layout and you can now see how much distance there is between Pump - Feed - Expansion. So what would be the perfect alignment?
  11. C

    System for a Small Cupboard

    Bit more in my training! I now know you can get a boiler made for a sealed system with all the kit inside including pump, expansion and wiring. So... It would seem I'm back to the pressured Cylinder on the floor with the Boiler above and then the Expansion Vessel for the Cylinder hanging...
  12. C

    Brown rust blockage in copper pipe? (see pics)

    I linked to the thumbnail! Try this...
  13. C

    Brown rust blockage in copper pipe? (see pics)

    When it's warmer I think I'll cut out the 12 inches up to the pump. This will allow me to also change the arrangement of the Fill and Vent pipes. Should be a picture below. How close should the Fill and Vent pipes be arranged to each other? Then How close should they be to the pump?
  14. C

    hot water for central heating not circulating

    He spent some time over coffee working it through with me. We knew that the return was nearly stone cold, the feeds to the radiators were scalding, the flow from the boiler was scalding, the flow from the motorised valves was scalding and the return from the Hot Water Cylinder was stone cold...
  15. C

    hot water for central heating not circulating

    This has all the symptons I had. The generally slow loss of radiators until I forced heat in to them one by one. The next morning I had nothing. Mine was blocked pipes and the plumber cut out a section of the return where a few bends met the T from the Hot Water Cylinder and the T of the...
  16. C

    System for a Small Cupboard

    Ahh. I had the Expansion Vessel in my mind but forgot I would need 2. So that's one for the closed Boiler system and one for the pressured Hot Water system. Is there any rule about the various vertical alignments of these? Can both EVs be up against the ceiling above the boiler?
  17. C

    System for a Small Cupboard

    Great. So it could work. What's the external EV and where would you put it?
  18. C

    System for a Small Cupboard

    I've posted before about getting something in a small airing cupboard and the general opinion was a combi like Vaillant 937 (with small store) The cupboard has a 450mm door but 570mm once inside. It's full height at 2400mm and a depth of 1200mm. I've had a quote for fitting and they want to...
  19. C

    Brown rust blockage in copper pipe? (see pics)

    Ah. Now I understand. I suppose it's quite likely that the 'Flow' could be blocked on the evidence of the 'Return'. As it's pumping over only on speeds 2 & 3 (and there was a fast refill) I think it can't be quite as bad. Should I try chemicals first (with a slight drain down) or just cut out...
  20. C

    Brown rust blockage in copper pipe? (see pics)

    Just read the Potterton Install book and it shows the S-plan Open Vented with the Feed joining the Vent before meeting the Flow with just a single pipe on to the Flow side before the pump. So their layout is... Boiler....3 Feet....Vent (with a tee just above for Feed)....6Inches...Pump
Back
Top