ideal Mexico - CH working but not HW

[GoodOne]

The pump is on the CH. Cant be sure it is on the return or flow.

The HW return is the pipe on the extreme right, I would say.

My money is on an airlock in the primary HW circuit. Can you post a pic if the HW flow into the cylinder?

Got this on a post before s here's the pictures
https://www.diynot.com/diy/threads/horstmann-425-tiara-timer-not-moving-working.445753/page-3

BTW if it's an airlock in the HW circuit, how can i troubleshoot it?

 

[GoodOne]

This problem started after I've drained my CH system. I drained the system via my radiator. Not from the boiler, as the arrow the picture below.

Should i try to drain it from the boiler (as the arrow in the picture) instead? Due to any blocked or airlock.

BTW all the CH heating is working but not the HW.

 

[heatservice]

Got this on a post before s here's the pictures
https://www.diynot.com/diy/threads/horstmann-425-tiara-timer-not-moving-working.445753/page-3

BTW if it's an airlock in the HW circuit, how can i troubleshoot it?

Where does the 1/2" pipe which is tee'd out of your HW flow (Side top connection) to your cylinder go?

 

[GoodOne]

Where does the 1/2" pipe which is tee'd out of your HW flow (Side top connection) to your cylinder go?

It goes to a back boiler, which I've put a stopped to it.

 

[heatservice]

Turn your CH off and HW on, turn your boiler thermostat to MAX this might force the air out of the open vent.

 

[FiremanT]

Is this your current cylinder set up? Thetre is one too many pipes on th HW circuit, unless anyoine can educate me?

 

[heatservice]

It goes to a back boiler, which I've put a stopped to it.

If its a capped off pipe is there any means of releasing air from it?

 

[GoodOne]

If its a capped off pipe is there any means of releasing air from it?

No actually, the only way is to remove the capped.

 

[heatservice]

Just to be clear I mean the pipe that goes up & is painted, I assume that your cold feed pipe is in the cylinder HW return as it a bit difficult to see in yor photo.

 

[GoodOne]

Is this your current cylinder set up? Thetre is one too many pipes on th HW circuit, unless anyoine can educate me?

Yes it is. It has pipes that go to back boiler before, which I capped it. And also one radiator always get hot when the HW is on.

 

[heatservice]

No actually, the only way is to remove the capped.

So its a soldered cap then, if it was a compression fitting you could just loosen it a bit to release the air.

 

[GoodOne]

Just to be clear I mean the pipe that goes up & is painted, I assume that your cold feed pipe is in the cylinder HW return as it a bit difficult to see in yor photo.

That's the one that goes to one of the radiators in the toilet. Not sure what is called, i think they said it is a leak system or something ??

 

[heatservice]

Yes it is. It has pipes that go to back boiler before, which I capped it. And also one radiator always get hot when the HW is on.

And that rad is on & vented?

 

[GoodOne]

And tha rad is on & vented?

You meant, have i bleed the rad? Yes i did.

 

[FiremanT]

That's the one that goes to one of the radiators in the toilet. Not sure what is called, i think they said it is a leak system or something ??

Heat sink.