no water pressure from boiler

[bobonacus]

Hi,

I replaced the circulator pump in my system and I now have no pressure from the boiler!

I shut off the valves either side of the pump before replacing.

I took the pump out and opened the valve from the boiler ( I confirmed it was opening by putting a screwdriver up the pipe!) but nothing came through. There is no header tank in the loft, the water feed pipe disapears off down through the floor boards and I can't trace it.

The boiler is a potterton PrimaB.

Questions:
1. I don't understand where the feed is coming from, does anyone know anything about this type of boiler, can't seem to find any info on the net. I assume it is a sealed system?

2. There are two pipes that go straight up from the boiler and stop at a little pot thing with what looks like a car tyre valve dust cap on the top, not sure what they are

cheers for any help

Robert

 

[bobonacus]

 

[doitall]

2 out of 10 for the plumbing

You do have an expansion vessel on the system

Filling is with a filler point, a braided flexible tube with a valve that turns on, disconnect after use.

fill the system to between 1 and 1.5 bar.

 

[bobonacus]

so basically that pipe that dissapears down through the floor *must* fill the system from somewhere, I just need to find where it goes?

 

[bobonacus]

are the two pipes off the top of the boiler for measuring the system pressure?

 

[doitall]

No the pipes of the top are the flow and return with 2 air vent stuck on the top.

A pressure gauge should be located somewhere near the expansion vessel, as would the filler point.

 

[croydoncorgi]

Please confirm that this thread (and the boiler shown) is related to your other thread about airing-cupboard layout and an air-separator.

If so, this may be one of the worst examples of DIY plumbing in captivity!

Best advice without more detailed information: turn it off and get a heating engineer to disintangle it. See my reply to your other thread.

 

[corgiman]

Please confirm that this thread (and the boiler shown) is related to your other thread about airing-cupboard layout and an air-separator.

If so, this may be one of the worst examples of DIY plumbing in captivity!

Best advice without more detailed information: turn it off and get a heating engineer to disintangle it. See my reply to your other thread.

the man is right

that is awful leave it to the pros

 

[bobonacus]

sorry, yes, initialy 2 seperate questions but all kinda rolled into 1!

See other thread but don't assume I am an idiot just because my heating was fitted by one before I even bought the house.