keston boiler

[Poolman]

I have just installed a keston Q37 to open vented system, tank is 4m above boiler and feed and expansion is 28mm teed into return within 2metres of boiler as per instructions. Radiators getting hot ok and hw circuit ok, but boiler is locking out on E37 lack of water pressure. instrctions say min static head should be 9ft which we have easily got that. Bar pressure at boiler is 0.32, instructions say we need a min of 0.6. Any suggestions, am reluctant to convert to sealed system as existing system was installed in the 80,s. poolman

 

[buckley plumb]

4m is only approx .4 bar pressure .can the pressure switch be removed .i recall a glow worm boiler years ago having a pressure switch and in the instructions it stated in small print if the head was leas than stated the switch was to be linked out . i am not saying link it out just read the instructions to make sure something like this is not the case. if in doubt contact keston they are very helpful.


ant

 

[Poolman]

I will speak to keston tomorrow, but reading instructions they dont indicate that i can link out pressure switch. I will try running the boiler tomorrow to make sure i get all the air out of system it was only run for about an hour this afternoon. Its fustrating but only went for a keston becuase of the flueing arrangement needed. It was not easy getting a new 28mm feed from tank to near the boiler, not sure what i will do if still not enough pressure tomorrow. thanks

poolman