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Unvented hot water cylinder but gravity fed system - help
Anonymous user 23/02/2024 - 3.31 PM
HI. My aqualisa 340 mach pump is not working so I have been looking into replacing it. What I found: The system is gravity fed (Tank in attic), the tank is a polar bear unvented. The old pump used to always pulse when turned on especially when hot ( I have solar panels) , I presume because the air has no place to vent to. I dont want to put in another pump if the whole system is incorrect. So what can I do, do I try to somehow vent an unvented system, or pressurized the system and get a different pump
Are you a tradesperson and able to answer this question?
4 Answers
Anonymous user
Apologies, I have no knowledge on this system.
Answered5 May 2020
1
Clayton Installations
Rating: 4.7 out of 5
You should get a qualified plumber in as there are a many safety devices and if you tamper and something happens your insurance will be null and void unvented can kill
Be safe
Answered5 May 2020
0
D & R Property and Plumbing Maintenance
Rating: 4.9 out of 5
you need to find a plumber who knows about solar hot water and is g3 registered to sort this out for you.
Answered5 May 2020
0
Max Gas Efficiency
Rating: 5 out of 5
Hi,
Your best option is to fit an unvented cylinder this will enable to use solar as well. But you need to check the mains pressure first if it is sufficient to supply your cylinder. If the mains pressure is above 2 bar this would satisfy for an unvented cylinder. You need to call a qualified plumber with NVQ3 and G3 registered. If you fit an unvented cylinder it has to be notified to local authority building control.
Answered16 May 2020
0