9
Piping size O.D : mm
Length of connecting pipe : m
Model
Refrigerant piping
Max. length : m
A
20
25
Indoor unit
Gas 0.43
Liquid 0.5
Gas
9.52
12.7
Liquid
6.35
Outdoor unit
Gas 0
Liquid 0
MU-A07YV -
E1
MU-A09YV -
E1
MU-A12YV -
E1
Indoor
unit
w
Max. Height
difference 10m
Height difference should be within
10m regardless of which unit,
indoor or outdoor position is high.
Outdoor unit
Refrigerant Piping
Max.length
A
Model
Refrigerant piping length (one way)
Outdoor unit precharged
600
750
25m
360
7m
0
10m
60
15m
160
20m
260
MU-A07YV -
E1
MU-A09YV -
E1
MU-A12YV -
E1
Calculation : Xg=20g/m x(A-7)m
MAX. HEIGHT DIFFERENCE
ADDITIONAL REFRIGERANT CHARGE(R410A : g)
MAX. REFRIGERANT PIPING LENGTH
PERFORMANCE CURVES
8
The standard data contained in these specifications apply only to the operation of the air conditioner under normal conditions,
since operating conditions vary according to the areas where these units are installed. The following information has been pro-
vided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve.
(1) GUARANTEED VOLTAGE
198~264V
(2) AIR FLOW
Air flow should be set at MAX.
(3) MAIN READINGS
(1) Indoor intake air wet-bulb temperature :
°CWB
(2) Indoor outlet air wet-bulb temperature :
°CWB
(3) Outdoor intake air dry-bulb temperature :
°CDB
(4) Total input:
W
Indoor air wet/dry-bulb temperature difference on the left side of the chart on next page shows the difference between the
indoor intake air wet/dry-bulb temperature and the indoor outlet air wet/dry-bulb temperature for your reference at service.
How to measure the indoor air wet-bulb/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 to start the EMERGENCY COOL 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.
}
Cooling
MU-A07YV -
MU-A09YV -
MU-A12YV -
E1
E1
E1
OB330-1.qxp 04.3.2 0:57 PM Page 9
