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Spot on kbdiy From the Suprima 100 install manual... Systems fitted with controls which allow the boiler to operate when both the hot water and central heating circuits are closed i.e. mechanically operated thermostatic control valves, must be fitted with a by-pass circuit of:- 1. A...

>> I have also noticed that the boiler only ever fires for about 2 minutes at a time and there seems to be a kettling or boiling sound when it is fired. Could it be a blockage? ............... Watertight, Do you in fact have *three* two port valves? 1 zone valve for upstairs switched by...

If you are getting air released at the bleed valve then water will surely follow. If as you say there are various extensions you may have to wait a while. Once filled and fully vented it will be as it was initially - no leaks or floods. Water showing at every rad and vent point followed by...

--> *Then, Closed all bleed valves* ....yes, then open one bleed valve and wait until water shows, then same with each rad. :)

sorry JohnD, posted about same time.

My sneaky suspicions --> Could be a *Primatic* cylinder incorrectly replaced with a direct or even an indirect cylinder? more info and clarification needed, or photos of old cylinder showing side vent screw etc' for ref: a Primatic cylinder can be fed cold water to both outer and...

Yes it is a fully pumped system. The duplicating of the previous setup is limiting the full function of the system as you rightly suspect. reconfiguring the dip switches will enable independent use of heating and hot water, or both together, also recheck functional flow of wiring after any dip...

Hi Roscoff, I would check your 3 port valve outlets orientation and correct any wiring to suit if required. Your valve outlets are somehow reversed. Your DHW outlet is feeding the rads (58 degrees) then go off, which will be via the cyl' stat? (no higher than 50c/120f is standard)...

The Dunsley Highlander 8 solid fuel stove has the option of a boiler for hot water, which can be either purchased with the stove or retrofitted at a later date. - - - If the H/W boiler can be retrofitted to the stove, then it should be possible to also revert. However, any necessary...