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DHW Priority Question

28W Member Posts: 141
My system (Vitodens WB1B-26) is currently set up without DHW priority.  So far so good, but once the heating season is here, am I likely to have problems with DHW recovery?  The heat loss for the house is pretty modest (just under 30,000 BTUH at design temp), and I keep the 40-gallon DHW tank at 140F.  I'd rather resolve this now, rather than waiting to see if we have cold showers in January.  Thanks.
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