Hardy H3 - THE HARDY OUTSIDE WOODBURNING HEATER; How does an outside heater heat my home?; How does THE HARDY heat water for household use?; How do the Thermostat Controls work?

THE HARDY OUTSIDE WOODBURNING HEATER
How does an outside heater heat my home?
The Hardy \Outside woodburning Heater is designed to save the most energy and provide the
most comfortable heating available. It heats your home by heating a stainless steel tank filled
with water, which surrounds the firebox of the outside heater. The heater is basically a non
pressurized boiler with an atmospheric vent. This hot water is then circulated through
underground hot water pipes to a water coil inside your existing central duct system. The
Hardy Heater can be connected to any existing hydronic heating system that operates at 180
degrees or less.
How does THE HARDY heat water for household use?
A plate heat exchanger (optional) is installed in the hot water circulator line. When you open a
hot water faucet inside your home, the cold water passed through the other side of the heat
exchanger and the water going your hot water heater is preheated. The only energy required is
maintaining the hot water temperature. The plate heat exchangers can be used for pools,
dairies and other domestic hot water needs.
How do the Thermostat Controls work?
The only visible addition to the heating system inside your home is the thermostat which is
located neat the existing thermostat. The two thermostats are installed so that if the outside
wood heater is not in operation, you existing unit will automatically take over to maintain your
household temperature. The wall thermostat which regulates the heat from the outside heater
performs two functions; when it senses your need for heat according to your temperature
setting, it turns the water pump on to circulate the hot water through the coil and also turns the
blower on inside your central unit to force air across the hot coil. This forces hot air into your
central duct system. The outside heater has a hot water thermostat which senses the water
temperature of the unit. If the water is not as hot as thermostat setting then the combustion air
intake is automatically opened and remains open until such temperature is attained.
Where should an Outside Wood Burning Heater be located?
The outside unit should be located at least 10 feet from your home so that all fire danger is
removed from your home. The unit may be installed as much as 100 feet away and still heat
your house and hot water. If the unit is located more than 100 feet away, you may experience
some heat loss on the water going to your hot water heater. Locate the outside wood heater
where it will be convenient for refueling and wood storage. All water and power lines are
installed underground between the house and the outside wood heater.
(MODEL H3 H5 & H6)
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