H6 Manual - Hardy Heater
2019-10-29 · For units covered by this instruction book, it is important to observe safety precautions to ... pressurized boiler with an atmospheric vent. This hot water is then circulated through ... On H3, H5, and H6 models domestic hot water is only available through the use of externally mounted heat exchanger kits. Heater Rating H3 –120, 000 BTU ...
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