I have just moved into a house with a Baxi 105 HE. In the cupboard that holds the boiler there is also a big tank which looks like an immersion tank but there is also what looks like a compression tank above it. I had thought that it must be a mega flow system as we can run more than one shower etc without losing pressure but I am now thinking it is just an immersion tank. Can anyone confirm what this is likely to be?
Many thanks for offering to help. I think I am sorted now as since posting we had an issue with it and gout an engineer round. It appears that the baxi combi is directly servicing some of the hot water downstairs but the upstairs is served by the tank and mega flow (the house used to be a bungalow and was converted into a house about 6 years ago). I believe that the tank is drawing water from the combi when it needs it ande when we turned off the plug for the tank (marked immersion heater on the plug) we stopped getting hot water.
On another subject I am thinking of upgrading the simple sunvic room controller and receiver with one that can have different settings for different tomes of the day. My engineer suggested a Honeywell CM927 but when I looked on Amazon it had lots of poor reviews. Do you have a view on these?
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