Heating and Cooling Info From Warmair.net
Geothermal Furnaces
A geothermal furnace is a heat pump that uses water instead of air as a source
of heat gain or loss. Water is pumped through a closed loop of
pipes buried in the ground, or pumped from a well and discharged
into another well or into a pond. The condenser and evaporator
coil are enclosed in one cabinet. A backup electric heating element
may be installed in the supply ductwork
In heating mode, heat is extracted from water as it passes through the condenser
and is released through the evaporator coil.
In air conditioning mode, heat is extracted from the evaporator coil and released
into water through the condenser.
Accessories can include an air filter, electronic air cleaner, high performance
media filter, and a humidifier. The humidifier can be of the steam
generating type, which will be line voltage powered, so caution
must be taken to shut off power before servicing. Sometimes a
condensate pump will be used to dispose of the water produce in
the dehumidifying action of the air conditioning.
If the system is zoned, a zone control panel and motor actuated dampers will
be installed on the unit or in the ductwork.
A filter or strainer may be installed in the supply side of the water feed
to keep sediment out of the pump and condenser if drawn from a
well.
Routine maintenance includes replacing the air filter or washing the electronic air
cleaner grids, cleaning the humidifier, and servicing the water
filter or strainer. All maintenance should be done with the system
shut down.
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