Extension: Unvented Cylinder: General Advice

dew

Joined
28 Apr 2010
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Location
Middlesex
Country
United Kingdom
Hi,
We are in middle of an extension and would like to take advice or anything specific to watch out for before we start the plumbing for megaflo etc.
We will have four shower rooms, 1 in GF and 3 in FF (first floor). The plan was to install a system boiler and unvented cylinder system (Megaflo). All the pipes are going to be new. I think we have the new blue pipe from mains, but this remains to be confirmed. We will have two zones UFH in GF (One in kitchen and another in living room). On first floor we would have radiators. O The desire is to use radiator with smart valves, which can control them individually. ne of the showers will have rain shower, jets etc.
The heating engineer is recommending Vaillant ecotec 637 coupled with 300 litres Vaillant unistor Cylinder.
I am looking for any advice on the size of pipe, suitability of proposed system etc.
Thanks In Advance,
Dew
 
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