Yes you should, TRVs should only come into play when a room
approaches its target temperature, until then the split of flow and therefore
heat will be controlled by the balance setting of the radiators. In short, the
approach is to set TRVs to max then balance the system, there's a good
method at http://www.diyfaq.org.uk/ . The shutting down of the TRVs will
distort the picture as the house warms up but that is the least of many
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