Boiler with no radiators

[grogoreo]

Hi,

Is it ok, after draining the system and removing all but one radiator to turn on the combi boiler, in order to get hot water, until new radiators are installed?

I've left the pressure at 0 so haven't filled up the system and have put capnuts on each TRV side just in case. (Couldn't get capnuts to fit lock shield 15mm or 22mm) So I could pressurise if needed.

Thanks, Greg

 

[Sharp Point]

Yes

 

[grogoreo]

Yes

Thanks, I appreciate the reply.

I presume the only problem would be if I turned the heating on, with no water in system, and this could damage the pump or something.

 

[Stu-B]

No, if you dont re pressurise the system the boiler won’t fire and the pump won’t run

 

[ShaunCorbs]

No your boiler requires a min heat leak at a min you could link the flow and return pipe from the rad valves eg stick a pipe between the valves

 

[Sharp Point]

Thanks, I appreciate the reply.

I presume the only problem would be if I turned the heating on, with no water in system, and this could damage the pump or something.

Sorry, didn’t you said you say you were leaving one radiator on with water in?

 

[Stu-B]

Sorry, didn’t you said you say you were leaving one radiator on with water in?

I read it as leaving the pressure at 0 so haven’t filled up the system....

 

[grogoreo]

Sorry, didn’t you said you say you were leaving one radiator on with water in?

Yes, but I should say there's actually two because I couldn't close the TRV on second so leaving it till new radiators come. I haven't filled the system so there's no water, fully drained.

So I did turn the boiler back on and hot water came out fine. I just wanted to check if this was going to damage the boiler in anyway.

 

[Rob Foster]

Hi,

Is it ok, after draining the system and removing all but one radiator to turn on the combi boiler, in order to get hot water, until new radiators are installed?

I've left the pressure at 0 so haven't filled up the system and have put capnuts on each TRV side just in case. (Couldn't get capnuts to fit lock shield 15mm or 22mm) So I could pressurise if needed.

Thanks, Greg

carry on re pressurise to 1 bar bleed etc. switch it on open valves etc and give it a go. should be ok ...what sort of combi....lets us know how you get on, makevsure the rad is open and bled

 

[Sharp Point]

Yes, but I should say there's actually two because I couldn't close the TRV on second so leaving it till new radiators come. I haven't filled the system so there's no water, fully drained.

So I did turn the boiler back on and hot water came out fine. I just wanted to check if this was going to damage the boiler in anyway.

It is a Sunday and I am hungover, but I assume there’s water in the boiler?

 

[grogoreo]

It is a Sunday and I am hungover, but I assume there’s water in the boiler?

When I say there's no water in the system I mean I've drained the radiators by the drain cock so pipes are empty.

"Rob Foster"
I have a Worcester Greenstar iErp combi boiler.

 

[Scott_D]

Don’t use it with no water in the system

 

[Rob Foster]

It is a Sunday and I am hungover, but I assume there’s water in the boiler?

is there any water in you tho..sounds like it might be pure alcholol...and why not it was saturday after all ...Cheers
Rob Foster aka centalheatking

 

[grogoreo]

Thanks for all the info.

 

[Rob Foster]

Thanks for all the info.

View attachment 39511

View attachment 39512

So are you up and running, your filling loop is switched off so your boiler reads 1.0 bar cold
let us know

 

[grogoreo]

Yes all is fine ta. After a stiff isolation valve I got there. No leaks yet.

 

[Sharp Point]

Yes

Offshore gas... thank you ever so much for the dislike, did it cross your mind that I got the wrong end of the stick? The initial post from the OP wasn’t very clear and I was hanging from the night before.