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Hello everyone, this is my first post.
I am having problems with my upstairs hot water taps first thing in the morning.
The system is an open vent with a cold storage tank in the loft and a direct hot cylinder on the first floor.
The problem started about 5 years ago when I extended my bathroom and fitted a gravity feed power shower. First thing in the morning when you switched the shower to eco, the pump would race for 30 seconds as if it was drawing air. This was not really a problem until the last day when I decided to move the hot cylinder to the front porch to free up the sitting room cupboard,which would allow me to take down the wall. The move added about 4 meters of pipe on the cold feed and the same on the hot take off.
After the move the shower has no water at it and I have to run the bath tap and sink tap to bleed out the air.This gets water to the shower.
So I have just examined the system and I think the air is being trapped when the tank is heated during the night.
The vent pipe is wrong I think,because the hot 22 mm pipe comes off the top of the tank goes up to the toilet and then up to the cold tank to vent.The hot taps are tee,ed off in the bathroom and not at the tank.
I don't want to totally repipe the vent so thought about installing an air vent valve on the hot leg as it leaves the tank.
Don't know if all this makes sense but I would like your thoughts.
Thanks
I am having problems with my upstairs hot water taps first thing in the morning.
The system is an open vent with a cold storage tank in the loft and a direct hot cylinder on the first floor.
The problem started about 5 years ago when I extended my bathroom and fitted a gravity feed power shower. First thing in the morning when you switched the shower to eco, the pump would race for 30 seconds as if it was drawing air. This was not really a problem until the last day when I decided to move the hot cylinder to the front porch to free up the sitting room cupboard,which would allow me to take down the wall. The move added about 4 meters of pipe on the cold feed and the same on the hot take off.
After the move the shower has no water at it and I have to run the bath tap and sink tap to bleed out the air.This gets water to the shower.
So I have just examined the system and I think the air is being trapped when the tank is heated during the night.
The vent pipe is wrong I think,because the hot 22 mm pipe comes off the top of the tank goes up to the toilet and then up to the cold tank to vent.The hot taps are tee,ed off in the bathroom and not at the tank.
I don't want to totally repipe the vent so thought about installing an air vent valve on the hot leg as it leaves the tank.
Don't know if all this makes sense but I would like your thoughts.
Thanks
