AIR LOCK IN HOT WATER

[gilky]

HELLO
I AM HAVING PROBLEMS WITH MY HOT WATER SUPPLY,I HAVE A BAXI BERMUDA GAS FIRE WHICH HAS A BACK BOILER.WHEN RUNNING THE HOT WATER FOR A BATH ONCE THE TAP HAS BEEN OPENED THE HOT WATER COMES OUT FOR SOME TIME AND THEN STARTS TO AIR LOCK,I THEN GO TO THE WASHING MACHINE AND BLOW COLD WATER BACK THROUGH THE HOT PIPES TO THE TANK TO RELEIVE THE AIR LOCK,IT LOOKS LIKE THE COLD WATER IS NOT COMING THROUGH QUICK ENOUGH AND IS AIR LOCKING THERE ARE NO APARENT LEEKS IN THE SYSTEM THIS HAS BEEN HAPPENING FOR SOME TIME NOW?

PLEASE HELP
THANKS FOR YOUR TIME

 

[Bahco]

Check your pipework has no inverted loops where air can collect. Shoddy pipework runs can cause this

 

[Bryan King]

check that the ballvalve is filling the tank adequately