My flat suffers from poor mains pressure and we have a direct heat setup with combi boiler. The boiler is rated up to 3Bar, so I was thinking of installing a cold water tank to feed a twin pump supply cold and into the boiler for hot (both 15mm). My questions are Is this a feasible setup Can I use a single 28mm feed from the tank to a double 15mm manifold into the pump or should I install two 22mm/15mm feed pipes from the tank instead. Thank you in advance for any help you can offer.

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Improving pressure in direct heating installation

Start date Jan 27, 2020
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heating installation pressure

View the thread, titled "Improving pressure in direct heating installation" which is posted in UK Plumbers Forums on UK Plumbers Forums.

ricardo100671

Jan 27, 2020

My flat suffers from poor mains pressure and we have a direct heat setup with combi boiler.
The boiler is rated up to 3Bar, so I was thinking of installing a cold water tank to feed a twin pump supply cold and into the boiler for hot (both 15mm).

My questions are

Is this a feasible setup
Can I use a single 28mm feed from the tank to a double 15mm manifold into the pump or should I install two 22mm/15mm feed pipes from the tank instead.

Thank you in advance for any help you can offer.