My existing indirect hot water cylinder is leaking at the bottom and needs to be replaced.
There is a thermostat strapped to the cylinder for the central heating boiler. The cylinder is not foam covered so the thermostat and its strap are in direct contact with the copper surface.
Any replacement cylinder will be foam covered. What's the best way of attaching a thermostat so as to minimise the removal of any foam?
If it is, it should have an inbuilt stat..
I can think of three options:
You can order a cylinder with a pocket fitting to take the bulb from a capillary thermostat. This results in the smallest amount of foam removal.
The RF cylinder thermostats have quite a small sensor which is strapped onto the cylinder.
With a conventional strap on thermostat, mark around it on the foam and cut out that section only. The brackets have lugs near the top to avoid the strap having to lay against the cylinder.
Just fitted one when I had a new boiler installed. I used a scalpel to cut fairly close in around the body of the thermostat, and then sliced in diagonally in the foam that was to be removed, IYSWIM.
Make sure you get a cylinder stat which is secured with a wire band that goes right across the top of the body of the stat. I had one on a previous property where the stat had two little wings down at the 'face' of the metal contact area, so it was necessary to cut lead-in channels in the foam either side of the stat.
In an ideal world......
Thanks for the replies.
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