Dear Geniuses (Genii?)
I have just had a new boiler/unvented cylinder fitted in my loft (pictures below - it is a Glowworm Ultracom SXI2 and a Stelflow 210 cylinder). All is good and it works OK, but I have two problems:
(1) Since it was installed (four weeks ago), the pressure has hit zero three times. It does not appear to drop in a regular pattern - and it seems to be after a long period of inactivity that it suddenly drops to zero (e.g. 3 - 4 hours of no activity). When we have the heating on constant (most days) the pressure does not seem to drop. After the first time, the installer said it was probably an airlock, and to top up the pressure (it jumped from 0 bar to 1.1 bar as soon as I put in some pressure). I did that. In the last two days, it has happened twice again. Each time I have topped up the pressure, and it jumped from 0 bar to 0.6 bar almost immediately. Do you have any hints and tips of how to deal with this? I have been unable to get hold of the installer over Christmas.
(2) the expansion vessel (on the left, just behind the cylinder in the pictures) makes a really loud and horrible noise when the hot water is turned on full after a period of not using the hot water. It is a long (3-5 second) loud trumped/vibration noise. The installer mentioned that he might swap the [regulator] and the vessel around (not sure what this means or if I have it right), and that it might be that we need to upgrade the 15mm pipework to the boiler from the mains to 22mm. To be fair, he mentioned this might be needed at the time of install and we agreed to try without. Again, any hints and tips on this one?
All help very gratefully received.
Happy new year!
Cheers
Phillip
View media item 29431 View media item 29432
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I have just had a new boiler/unvented cylinder fitted in my loft (pictures below - it is a Glowworm Ultracom SXI2 and a Stelflow 210 cylinder). All is good and it works OK, but I have two problems:
(1) Since it was installed (four weeks ago), the pressure has hit zero three times. It does not appear to drop in a regular pattern - and it seems to be after a long period of inactivity that it suddenly drops to zero (e.g. 3 - 4 hours of no activity). When we have the heating on constant (most days) the pressure does not seem to drop. After the first time, the installer said it was probably an airlock, and to top up the pressure (it jumped from 0 bar to 1.1 bar as soon as I put in some pressure). I did that. In the last two days, it has happened twice again. Each time I have topped up the pressure, and it jumped from 0 bar to 0.6 bar almost immediately. Do you have any hints and tips of how to deal with this? I have been unable to get hold of the installer over Christmas.
(2) the expansion vessel (on the left, just behind the cylinder in the pictures) makes a really loud and horrible noise when the hot water is turned on full after a period of not using the hot water. It is a long (3-5 second) loud trumped/vibration noise. The installer mentioned that he might swap the [regulator] and the vessel around (not sure what this means or if I have it right), and that it might be that we need to upgrade the 15mm pipework to the boiler from the mains to 22mm. To be fair, he mentioned this might be needed at the time of install and we agreed to try without. Again, any hints and tips on this one?
All help very gratefully received.
Happy new year!
Cheers
Phillip
View media item 29431 View media item 29432
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