Performance Curves - Mitsubishi Electric MXZ-18NV Service Manual

9

PERFORMANCE CURVES

The standard data contained in these specifications apply only to the operation of the air conditioner, that is one indoor unit
with one outdoor unit, under normal conditions. Since operating conditions vary according to the areas where these units are
installed. The following information has been provided to clarify the operating characteristics of the air conditioner under the
conditions indicated by the performance curve.
(1) GUARANTEED VOLTAGE
Rated voltage : ±10% (198 ~ 264V 50Hz )
(2) AIR FLOW
Air flow should be set at MAX.
(3) MAIN READINGS
(1) Indoor intake air wet-bulb temperature :
(2) Indoor discharge air wet-bulb temperature :
(3) Outdoor intake air dry-bulb temperature :
(4) Total input:
(5) Indoor intake air dry-bulb temperature :
(6) Outdoor intake air wet-bulb temperature :
(7) Total input :
Indoor air wet-bulb temperature difference on the left side of the chart on next page shows the difference between the
indoor intake air wet-bulb temperature and the indoor discharge air wet-bulb temperature for your reference at service.
How to measure the indoor air wet-bulb temperature difference
1. Attach at least 2 sets of wet-and dry-bulb thermometers to the indoor air intake as shown in the figure, and at least 2 sets
of wet-and dry-bulb thermometers to the indoor air outlet. The thermometers must be attached to the position where air
speed is high.
2. Attach at least 2 sets of wet-and dry-bulb thermometers to the outdoor air intake.
Cover the thermometers to prevent direct rays of the sun.
3. Check if the air filter is cleaned.
4. Open windows and doors of room.
5. Press the EMERGENCY ON/OFF button to start the EMERGENCY operation.
6. When system stabilizes after more than 15 minutes, measure temperature and take an average temperature.
7. Ten minutes later, measure temperature again and check that the temperature does not change.
INDOOR UNIT
20
°CWB
}
°CWB
Cooling
°CDB
W
°CDB
}
°CWB
Heating
W
OUTDOOR UNIT