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What is the best way with boiler upgrades etc to comply with zoning requirements of part l, programmable trv's etc......
Discuss Part L heating zone compliance?? in the Plumbing Zone area at PlumbersForums.net
lol i keep putting 'simon sez'.... not going to put 'simple' first tho.... theres a song thereas simon sez will work with combi too
Reply to Part L heating zone compliance?? in the Plumbing Zone area at PlumbersForums.net
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