Carrier GT-S - Manual (Page 14)

GT-S
12 Carrier Indoor & Outdoor Split Geothermal Heat Pumps - Rev.: 08/10/05
Application Flexibility
• Eight Capacities 018, 024, 030, 036, 042, 048,
and 060.
• Voltage availability in 208-230/60/1.
• Stackable cabinets.
• Extended range operation (20-120°F EWT)
and fl ow rates as low as 2.25 gpm per ton
(geothermal closed loop operation).
• Circuit breaker protected loop and hot water
gen er a tor pumps.
• Field selectable low temperature cut-out selection
setting for geothermal closed loop operation.
• Easily accessible electrical box for wiring.
• Weather-resistent cabinet.
• Internally-mounted (fi eld installed) Flow Controller
• Precharged refrigerant circuit with backseating
service valves for quick installation.
Operating Effi ciencies
• ARI/ASHRAE/ISO 13256-1 ratings for heating
COP’s, cooling EER’s and low water fl ow rates.
• Operating and temperature range allow
shorter loops.
• Optional remoted-mounted hot water generator
with internal pump generates hot water at
considerable savings.
• Rugged, super quiet, and highly effi cient scroll
compressors (rotary for size 018).
• Oversized coaxial tube water to refrigerant heat
exchangers operate at low liquid pressure drop.
• Convoluted copper (and optional cupronickel)
water tube functions effi ciently at low-fl ow rates
and provides freeze-damage resistance.
Service Advantages
• Removable side and top panels for easy access to
water/refrigerant circuits.
• Low ambient temperature switch activates loop
pump in extreme temperatures.
• Solid state digital compressor module provides
reliable lockout, diagnostic, and time delay functions.
• High side loss-of-charge sensing reduces nuisance
low pressure faults.
• LED Fault and status indication with memory for
easy diagnostics.
• High and low pressure service ports in the
refrigerant circuit.
• Refrigerant sensing freeze protection for more
accurate low temperature cut-out.
Factory Quality
• All units are built on our Integrated Process
Control Assembly System (IPCS). The IPCS is
a unique state of the art manufacturing system
that is designed to assure quality of the highest
standards of any manufacturer in the water-source
industry. Our IPCS system:
- Verifi es that the correct components are
being assembled.
- Automatically performs special leak tests on
all joints.
- Conducts pressure tests.
- Performs highly detailed run test unparalleled in
the HVAC industry.
- Automatically disables packaging for a “failed” unit.
- Creates computer database for future service
analysis and diagnostics from run test results.
• Heavy gauge galvanized steel cabinets are epoxy
powder coated for durable and long-lasting fi nish.
• All refrigerant brazing is done in a nitrogen
atmosphere.
• All units are deep evacuated to less than 100
microns prior to refrigerant charging.
• All joints are both helium and halogen leak tested
to insure annual leak rate of less than 1/4 ounce.
• Coaxial heat exchanger, refrigerant suction lines
and all water lines are fully insulated to eliminate
condensation problems in low temperature
applications.
• Noise Reduction features include: double isolation
mounted compressors, compressor springs,
insulated compressor compartment, and interior
cabinet insulation using 1/2” coated glass fi ber.
• Safety features include: high pressure and loss of
charge to protect the compressor; condensate
overfl ow protection; low water temperature
limit sensors to safeguard the coaxial heat
exchanger and air coil; hot water high limit and low
compressor discharge temperature switch provided
to shut down the hot water generator when
conditions dictate. Fault lockout enables emergency
heat and prevents compressor operation until
thermostat or circuit breaker has been reset.