DIY Doctor UK DIY Forums

I live in a two storey house and have a vented gas central heating system which is working fine.

My query is (with the aim of getting some more bedroom storage space) I want to move the indirect hot water tank from the bedroom airing cupboard on the 1st floor to the loft.

The loft is on two levels and I would like to put the hot water cylinder in the lower loft (which is still over the 1st floor but 50mm below the level of the main loft),

The outlet on the cold tank would be about 50mm above the top of the repositioned hot tank and the water in the cold tank is about .5m deep

My biggest concern is "will the hot water from the boiler on the ground floor get pumped up to the loft hot water cylinder?"

Do conventional Grunfos-type pumps have the power to get the water up that extra 8 feet? Or would I have to install and additional or more powerful pump?

In the loft the normal vents to the cold tank and the boiler feed/expansion tank would all be about 1m higher than the top of the hot water cylinder.

Ford Anglia Gnome,
"will the hot water from the boiler on the ground floor get pumped up to the loft hot water cylinder?" YES but you may have to fit a vent on the highest primary tank tapping.
"Do conventional Grunfos-type pumps have the power to get the water up that extra 8 feet? Or would I have to install and additional or more powerful pump" YES
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Thanks stoneyboy


Your reply has lifted by spirits this morning. My wife will be pleased to hear that she will get and extra load of cupboard space to fill with junk.

Ford Anglia Gnome

Stoneyboy

Just checking
Is that YES a more powerfull pump is needed ? If so what should I go for?

Ford Anglia Gnome,
Sorry got excited with the copy and paste standard pump will be OK a more powerful pump is not needed.
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