Performance Curves - Mitsubishi Electric MUZ-FT25VGHZ-E1 Service Manual

9

PERFORMANCE CURVES

MUZ-FT25VGHZ MUZ-FT35VGHZ MUZ-FT50VGHZ
The standard specifications apply only to the operation of the air conditioner under normal conditions. Since operating condi-
tions 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
198 ~ 264V, 50 Hz
(2) AIRFLOW
Airflow should be set at MAX.
(3) MAIN READINGS
(1) Indoor intake air wet-bulb temperature:
(2) Indoor outlet 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 and dry bulb temperature difference on the left side of the following chart shows the difference between the
indoor intake air wet and dry bulb temperature and the indoor outlet air wet and dry bulb temperature for your reference at
service.
(4) GUARANTEED OUTDOOR TEMPERATURE
COOLING (DB/WB): -10/ – ~ 46/ –
HEATING (DB/WB): -25/ – ~ 24/18
How to measure the indoor air wet and dry 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 that the air filter is cleaned.
4. Open windows and doors of room.
5. Press the EMERGENCY OPERATION switch once (twice) to start the EMERGENCY COOL (HEAT) MODE.
6. When system stabilizes after more than 15 minutes, measure temperature and take an average temperature.
7. 10 minutes later, measure temperature again and check that the temperature does not change.
INDOOR UNIT
Wet and dry bulb
thermometers
FRONT VIEW
OBH865
}
°C [WB]
°C [WB]
Cooling
°C [DB]
W
}
°C [DB]
°C [WB] Heating
W
OUTDOOR UNIT
Wet and dry bulb
thermometers
BACK VIEW
15