Hello all,
I've just had a quote to change my current vented system to an unvented system. The work involves installing a thermostat cut out to my existing boiler so it's compatible with a sealed system. Supplying the cylinder and marrying up excisting pipe work.
What I'm not sure about is they say I need a pump plus two zone valves for my central heating to run off the sealed system. I was under the understanding that the mains pressure does away with the need for any pumps?
The plumber said there was no issues with the flow/pressure of the water coming in however he never measured either.
Cheers
I've just had a quote to change my current vented system to an unvented system. The work involves installing a thermostat cut out to my existing boiler so it's compatible with a sealed system. Supplying the cylinder and marrying up excisting pipe work.
What I'm not sure about is they say I need a pump plus two zone valves for my central heating to run off the sealed system. I was under the understanding that the mains pressure does away with the need for any pumps?
The plumber said there was no issues with the flow/pressure of the water coming in however he never measured either.
Cheers