34
INSTALLATION OF UNIT
ENGLISH
Starting the Unit
(If unit is equipped with electric heater.)
Check to ensure all grilles and registers are
open and all unit access doors are closed
before start-up.
Turn on unit main power supply.
Press the E/Heater operation button on the
Remote controller.
Set the temperature approximately 5˚C above
room temperature.
Verify that the unit airflow rate is adjusted
according to information provided in
"Determining Evaporator Fan Adjustment"
section of this manual.
To start the unit in the cooling mode, close
unit disconnect switch and set the operating
mode to COOL and move the cooling set
point approximately 5˚C below room
temperature. The condenser fan motor,
compressor and evaporator fan motor should
operate automatically. There will be a delay of
up to 3 minutes before the unit will start in the
cooling mode.
After the unit has operated in the cooling
mode for a short period of time, install
pressure gauges on the gauge ports of the
suction line valves.
Check the suction pressures and compare
them to the normal operating pressures about
from 700~1000kPa
With the compressor operating, check the line
voltage at the unit. The voltage should be
within the range shown on the unit
nameplate. If low voltage is encountered,
check the size and length of the supply line
from the main disconnect to the unit. The line
may be undersized for the length of the run.
Heating Mode
Cooling Mode
Operating Pressures
Voltage
NOTE
!
• Always route refrigerant hoses through
the port hole provided and have
compressor access panel in place.
NOTE
!
• Do not use pressures to determine the
unit refrigerant charge. The correct
charge is shown on the unit nameplate.
To charge the system accurately, use
superheat charging or weigh the charge.
WARNING
• Bodily injury can result from high voltage
electrical components. If operating
checks must be performed with the unit
operating, it is the technician's
responsibility to recognize these hazards
and proceed safely. Failure to do so
could result in severe personal injury or
death due to electrical shock or contact
with moving parts.
!
1,MFL67445803,영영 2018. 2. 19. 영영 5:01 Page 34
