Combi boiler needs re-pressurizing

Bendy_House

nofoollikeold said:

1. It is a requirement of the Water Regulations that the filling loop be disconnected once pressure has been set.  Must be one of the most highly ignored regulations of all time.  
2. Putting permanent pipework, albeit with valves in place, does break that Water Regulation.
3. There should be a control valve at each end of the filling loop, and a check (non-return) valve on the water mains end, between the two control valves.  The double check valve should preferably be a double check valve.  
4. There are exceptions where the boiler manufacturer builds in a "filling loop".  However the manufacturer has to get WRAS approval for the design.  These can be very expensive to replace.  If you have the option a proper independent filling loop is better.
5. I'm not sure I'd rely on a Surestop stop tap, and they are not cheap.

Thanks NFLO. Yes, an understandable - but ultimately silly - water reg. Sigh. (I'd happily DIY a rigid link...)

And agree about the Surestop - just try tweaking up the system pressure with an on/off switch :-) (Unless I misunderstood.)

A topping-up loop only has to be small, so even a 10mm flexi would do the job, if this made it easier to install under the boiler.