Hitachi FSG1 Series Technical Catalogue page 422

STANDARD SPECIFICATIONS
21
/2
UNIT - The unit shall be a multi-split system inverter-driven
heat pump air conditioner for application with R407C
refrigerant, and shall be composed of 4-way cassette type
indoor units, or in-the-ceiling type indoor units, 2-way
cassette type indoor units, ceiling type indoor units, wall
type indoor units, floor type indoor units and an outdoor unit,
with a distributed refrigeration cycle, electrical components
and enclosing cabinets. Optional accessories shall also be
provided upon customer request. The indoor unit shall be
completely weather-proofed for outdoor installation. Both
indoor unit and the outdoor unit shall be properly
assembled, internally piped and wired, thoroughly tested,
and charged with R407C refrigerant at the factory and shall
comply with Japanese standardization statues.
CAPACITY - The total capacity of the multi-split system
inverter-driven heat pump air conditioner shall be
_____kcal/h or greater with _____ °C air inlet dry bulb,
_____°C air inlet wet bulb, _____ °C outdoor air inlet
temperature and _____ m³/m. indoor air flow. The total
compressor power inputs shall not exceed _____ kW. The
total heating capacity of the split-type air conditioners shall
be _____ kcal/h or greater, with _____ °C indoor heat
exchanger inlet air dry bulb, _____ °C outdoor heat
exchanger air inlet dry bulb, _____ °C outdoor heat
exchanger air inlet wet bulb, and _____ m³/min indoor air
flow.
The total compressor power input shall not exceed
_____kW.
INDOOR UNIT
CABINET - The cabinet shall be constructed of galvanized
steel sheet or finished steel sheet, baked with synthetic
resin-paint, with a plastic air panel assembly for cassette
type unit, and be constructed of galvanized steel sheet for
the in-the-ceiling duct type unit.
REFRIGERATION CYCLE - The refrigeration cycle shall be
equipped with a heat exchanger, an electronic expansion
valve, solenoid valves and flare connections.
INDOOR FAN AND FAN MOTOR - The indoor fan shall be
the multi-blade centrifugal type, statically and dynamically
balanced, and directly driven by a _____ W motor for model,
_____ and a _____ W motor for model _____ . The fan
motor bearing shall be permanently lubricated. The fan shall
deliver _____ m³/min air flow for model _____ and _____
m³/min for model _____ at the nominal air flow. Three
operating positions Hi, Me and Lo can be selected
according to the required conditions.
INDOOR HEAT EXCHANGER - The heat exchanger shall
be the multi-pass, cross-finned tube type. equipped with
highly-efficient aluminum fins, mechanically bonded to
seamless, oxygen-free copper tubes. The fins shall be
spaced at no more than 12 fins per 25.4mm. The face area
shall not be less than _____ m² for model _____ and _____
m² for model _____ . The coil shall be cleaned, dehydrated
and tested for leakage at the factory.
OUTDOOR UNIT
CABINET - The cabinet shall be constructed of galvanized
steel sheet, baked with synthetic resin-paint, The service
panel shall be easily removable for service access to the
electrical components and the compressor section.
REFRIGERATION CYCLE - Each refrigeration cycle shall
be equipped with (a) scroll compressor (s), a solenoid
valve, a heat exchanger, an accumulator, a 4-Way valve
and flare connection parts.
COMPRESSOR PROTECTION - The compressor shall be
protected against breakdown by a quick response
overcurrent relay, a high pressure switch, a wrap-around
type oil heater and a discharge gas thermistor.
OUTDOOR FAN AND FAN MOTOR - The outdoor fan(s)
shall be the plastic propeller type, dynamically balanced,
and the fan shall be directly driven by a _____ W motor for
vertical-flow air discharge. The fan motor shall be
permanently lubricated and be protected from ingress of
water.
OUTDOOR HEAT EXCHANGER - The heat exchanger
shall be the multi-pass, cross-finned tube type, equipped
with highly-efficient aluminum fins, mechanically bonded to
oxygen-free copper tubes. The coil shall be cleaned,
dehydrated and tested for leakage at the factory.
CONTROL - All electrical control devices , shall be enclosed
in the indoor and outdoor units.
In addition to the compressor protection devices , the indoor
fan motor shall be equipped with an internal thermostat. The
outdoor fan motor shall be protected by an internal
thermostat. The indoor fan motor shall be directly supplied
with the power source from the control circuit. The functions
of these control devices shall compose an electrical
sequence of manual starting and stopping, automatic
continuous operation whenever the room thermostat
requires, and the protection devices allow the operation.
CABINET - The cabinet shall be constructed of galvanized
steel sheet.
REFRIGERATION CYCLE - The refrigeration cycle shall be
equipped with solenoid valves and flare connections to
changeover the cycle in mediating between outdoor unit and
indoor unit