8
Enertech Global
IOM, ZS/ZT Models
Consumer Instructions:
Dealer should instruct the consumer in proper
operation, maintenance, thermostat and
indicator lights. Also provide the consumer with
the manufacturer’s Owner's Manual for the
equipment being installed.
Enertech Global D-I-Y Policy: Enertech Global’s
geothermal heat pumps and system installations
may include electrical, refrigerant and/or water
connections. Federal, state and local codes
and regulations apply to various aspects of the
installation. Improperly installed equipment can
lead to equipment failure and health/safety
concerns. For these reasons, only qualified
technicians should install an Enertech Global built
geothermal system.
Because of the importance of proper installation,
Enertech Global does not sell equipment direct
to homeowners. Internet websites and HVAC
outlets may allow for purchases directly by
homeowners and do-it-yourselfers, but Enertech
Global offers no warranty on equipment that is
purchased via the internet or installed by persons
without proper training.
Enertech Global has set forth this policy
to ensure installations of Enertech Global
geothermal systems are done safely and
properly. The use of well-trained, qualified
technicians helps ensure that your system
provides many years of comfort and savings.
Equipment Installation: Special care should be
taken in locating the unit. If not suspended,
horizontal units should be placed on a vibration
absorbing pad (air pad) slightly larger than the
base of the unit. Flex connectors should also
be installed in between the ductwork and the
unit. All units should be located in an indoor
area were the ambient temperature will remain
above 55°F and should be located in a way
that piping and ductwork or other permanently
installed fixtures do not have to be removed for
servicing.
Electrical (Wiring): All wiring, line and low
voltage, should comply with the manufacturer's
recommendations, The National Electrical
Code, and all local codes and ordinances.
Electrical (Power Supply): When any
compressor bearing equipment is connected
to a weak power supply, starting current will
generate a significant “sag” in voltage which
reduces the starting torque of the compressor
motor and increases start time. This will
influence the rest of the electrical system in
the building by lowering the voltage to the
lights. This momentary low voltage causes
“light dimming”. The total electrical system
should be evaluated with an electrician and
HVAC technician. The evaluation should
include all connections, sizes of wires and size
of the distribution panel between the unit
and the utility’s connection. The transformer
connections and sizing should be evaluated by
the local electric utility provider.
Thermostat: Thermostats should be installed
approximately 54 inches off the floor on an
inside wall in the return air pattern and where
they are not in direct sunlight at anytime.
Loop Pumping Modules: Must be wired to the
heat pump’s electric control box. A special
entrance knockout is provided below the
thermostat entrance knockout. A pump
module connection block, connected to the
master contactor, is provided to connect the
Pump Module wiring.
Hot Water Generator (HWG) Package: Water
heating is standard on all residential units (units
may be ordered without thiss feature). It uses
excess heat during both heating and cooling
cycles, to provide hot water for domestic
needs. A double wall Hot Water Generator
(HWG) exchanger (coil) located between the
compressor and the reversing valve, extracts
superheated vapor to heat domestic water;
still satisfying its heating and cooling needs. The
water circulation pump comes pre-mounted
in all residential units, but must be electrically
connected to the master contactor. Leaving it
unconnected ensures that the pump is not run
without a water supply.
The Hot Water Generator (HWG) package can
make up to 60% (depending on heat pump
usage) of most domestic water needs, but a
water heater is still recommended.
SECTION 3: INSTALLATION CONSIDERATIONS