Why does the hose pressure on my Worcester Bosch boiler preserve dropping? ...

Help next to roaches Pls!?
Answers:    There could be a few reasons; 1) A escape on your central heat system, check around radiators/radiator valves etc. 2) A out of order pressure relief stopcock, (PRV) there should be a small (15mm) copper pipe running through the wall close by your boiler to outside, if this pipe is dripping then your PRV is ratification and will need replacing. 3) Your expansion vessel could own lost pressure, top-up the pressure in your heat system then turn your heat on. Keep an eye on your pressure gauge and if the syringe goes straight up to 3 railing or over and then drops, this is the bad habit. 4) If you've bled your radiators recently and not topped-up the heat system then this will explain why your pressure is low. Hope this help??
5.5 kva how Meany wots is it?
Unless you keep bleeding the radiators you must own a leak.
It may drop a tiny amount over a extent of months.