Syphon effect on boiler, where have I gone wrong?

[Vindiv8]

OK, started plumbing on boiler. :) No visable leaks, but will only empty to just below tank connector. :cry: What have I done wrong?

PS looks like i've got the hang of the photo's too

 

[Wendy1971]

it wont empty any lower because your design is not laying flat on the bottom of your boiler looks like you drilled hole a bit high. Water will only escape to the height of the hole

 

[Sean_Mc]

Cover the T-joint with your fingers, open the tap and blow in it.....then get someone with a camera to take a pic of you :lol:

Sorry... to see it the solder joints are water tight....90degree joint may not be soldered all the way around :hmm:

 

[snail59]

Looks OK. Outfall is lower than the boiler base. Only thing I can see is if your getting air in at the elbow joint in the boiler or you just haven't used enough water to get the syphon effect working.

 

[Vindiv8]

Hmmm.. gave the boiler a tip forward, and let it rest back. It emptied all the way. Airlock? Is that because I haven't got enough drop on the exit pipe after ball valve?

 

[Sean_Mc]

Is it okay then now Vin?

When I drain my boiler I have the down pipe about 4inches above the FV

 

[Vindiv8]

Cover the T-joint with your fingers, open the tap and blow in it.....then get someone with a camera to take a pic of you :lol:

Sorry... to see it the solder joints are water tight....90degree joint may not be soldered all the way around :hmm:

Do I do that before or after the boil?

Is it okay then now Vin?

When I drain my boiler I have the down pipe about 4inches above the FV

Is it okay then now Vin?

When I drain my boiler I have the down pipe about 4inches above the FV

I think it, will brim it tomorrow and try again. Getting ready to go to the Sheffield tap now :drink:

 

[Sean_Mc]

Good stuff Have fun :thumb:

 

[Aleman]

The other thing that may cause an issue is that you are getting air going back up the 15mm pipe breaking the syphon at the tap . . . one trick I learned before I started pumping from the boiler is to reduce the diameter about 1" below the tap (on the outside), using a 15-10 or 15-8 reducer and then a length of poly tube. . . . all the air is removed from the tube (especially when the boiler is full) and it doesn't run back up the tube to break the syphon.

 

[Vindiv8]

Yay! boiler does drain, didn't fill it enough for the siphon to start Total dead space 1.1L I think that's acceptable for a 30l boiler? :party: