Owner`s manual

3
Spectra Series Owner’s Manual
During the cooling season...
The Spectra unit extracts heat from the air indoors and transfers it
to the circulating water in the underground loop system where it is
dissipated into the cooler earth.
Hot water option...
Depending on the options you have chosen, your Spectra geother-
mal unit can also provide a portion of your domestic hot water needs.
Anytime your Spectra unit is heating or cooling it will remove a portion
of the heat from the system and transfer it to your hot water tank.
Is there more than one way to install
geothermal?
There are several different methods used to install a geothermal
system. Your WaterFurnace dealer will assist in choosing the right one.
Our independent dealers have been thoroughly trained on geothermal
applications and are supported by the industry’s best computer
software to ensure that you receive the right system.
Closed loop systems...
The geothermal closed loop system is an underground network of
sealed, high strength plastic pipe filled with a water/antifreeze solution.
When cooling requirements cause the loop liquid temperature to rise,
heat is dissipated into the cooler earth. Conversely, if space heating
demands cause the loop temperature to fall, heat is absorbed from the
earth. A closed loop system uses a small, low-wattage pump to
circulate the liquid. Closed loops can be installed in the ground
horizontally in a trench, vertically in drilled holes, or submerged in a
pond or lake. All three are sealed airtight and, when designed properly,
produce similar efficiencies.
Open loop systems...
A geothermal open loop system uses ground water as a direct
energy source when good quality well water is available at a reasonable
pumping depth. A good water discharge system is also required, such
as a ditch, field tile, pond or stream. An open loop system may require
periodic inspection/cleaning to prevent build-up of mineral deposits.