Piping Method #2 - Indirect Water Heater Loop Piping (Bolded); Piping Method #3 - Direct Connection Of Boiler To Heating System - Crown Boiler BWC Series Installation Instructions Manual
Bwc series high effi ciency gas-fired hot water direct vent condensing boilers
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Also See for BWC Series:
- User's information manual (10 pages) ,
- Service supplement manual (17 pages)
