Mitsubishi Electric PL12AK User manual

OC246-1
CONTENTS
1. FEATURES ····································································································OC246- 2
2. PART NAME AND FUNCTIONS····································································OC246- 4
3. SPECIFICATIONS··························································································OC246- 6
4. DATA ··············································································································OC246- 7
5. OUTLINES AND DIMENSIONS ····································································OC246-16
6. REFRIGERANT SYSTEM DIAGRAM····························································OC246-17
7.WIRING DIAGRAM ························································································OC246-18
8. OPERATION LOW-CHART············································································OC246-19
9. MICROPROCESSOR CONTROL ··································································OC246-22
10.TROUBLESHOOTING····················································································OC246-33
11. 4-WAY AIR FLOW SYSTEM ········································································OC246-39
12. SYSTEM CONTROL ······················································································OC246-45
13. DISASSEMBLY PROCEDURE ······································································OC246-50
14. PARTS LIST ··································································································OC246-53
15. OPTIONAL PARTS ························································································OC246-56
PL12AK
PL18AK
PL24AK
PL30AK
PL36AK
PL42AK

OC246-2
1FEATURES
1. SPACE-SAVING CENTRALLY LOCATED CEILING RECESSED INSTALLATION
2. 4-WAY AIR FLOW SYSTEM
This series allows you to select from 2, 3, and 4 way air flow directions according to your requirement. As a result, you get
superb flexibility in choosing a configuration that gives you maximum cooling efficiency in a neat and unobstructive installa-
tion.
3. STABLE COOLING EVEN AT OUTDOOR TEMPERATURES AS LOW AS 0--F MAKES
YEARROUND AIR-CONDITIONING POSSIBLE.WIND BAFFLE REQUIRED.
The microprocessor automatically adjusts fan speed in accordance with outdoor temperature to maintain the coolant at an
even condensing temperature.The result is smooth, efficient cooling even when temperatures outdoors drop as low as 0-F.
This makes the unit ideal for a wide range of specialized cooling needs, such as rooms with many office machines or com-
puters and areas subject to strong sunlight.
4. ADVANCED MICROPROCESSOR CONTROL
(1) Easy to use Microprocessor (remote controller)
1) Ultra-Thin Remote Controller
The streamlined, wide controller is designed to blend with any kind of interior and the adoption of a sophisticated micro-
processor allows you to carry out a wide range of operations easily.
2) Attractive Liquid Crystal Display (LCD)
Units operation mode, set temperature, room temperature, timer setting, fan speed, and air flow direction are displayed
on the remote controller with the easily understood visual Liquid Crystal Display (LCD).
3) Convenient 24-Hour ON-OFF Timer
The timer allows Mr.SLIM to be switched on or off automatically at the time is shown on the LCD.
4) Self-Diagnostic Feature Indicates Faults Instantly
In the rare case when a problem occurs, the unit stops operating and the set temperature indicator changes to the self-
diagnostic indicator, indicating the location of the fault.
If the check switch is pressed twice, the unit stops operating and the check mode is initiated. The cause of the most
recent problem stored in the memory is displayed on the LCD. This is extremely useful for maintenance purposes.
5) Useful Memory Feature for Storing Instructions
The previous set value is memorized so that constant temperature control can be obtained. This is convenient when,
for example, a power failure occurs.
(2) Non-polar Two-Wire Remote Controller Cables
The non-polar, two-wire type remote controller cable is slim, installation is simple and trouble-free. Remote controller wire
can be extended up to 550 yards.
Models Cooling capacity SEER
PL12AK 12,500 Btu/h 10.1
PL18AK 18,400 Btu/h 10.2
PL24AK 24,000 Btu/h 10.0
PL30AK 31,000 Btu/h 10.6
PL36AK 36,500 Btu/h 10.5
PL42AK 42,500 Btu/h 10.8
Indoor Unit
Remote controller
FILTER
CHECK MODE
TEST RUN
TIMER OFF TIMER 
CHECK SETTEMP.
CLOCK AUTO AUTO 
START STOP
SWING
FAN 
SPEED AUTO

RETURN
FAN
7.
8.
9.
5.
6.

OC246-3
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7. REDI-CHARGED REFRIGERANT SYSTEM
The industry’s first redi-charge refrigerant system.
There is no need to adjust the amount of refrigerant to match the piping length on-site unless lines exceed 100feet.
You will see a major reduction in installation time and labor costs.
8. HIGH RELIABILITY AND EASY SERVICING.
In addition to the self-diagnostic function, units are also equipped with a 3-minute time delay mechanism , an auto restart
function, an emergency operation function, a test run switch, etc., to assure high reliability and easy servicing.
9. NITROGEN GAS IS CHARGEDTO INDOOR UNIT.
Indoor unit and refrigerant pipes are charged with nitrogen gas (N2) instead of (R22) before shipment from the factory.
5. DRAIN PUMP FOR EASY PIPE CONNECTION (DRAIN LIFT-UP MECHANISM)
This mechanism, with its capacity to raise drain water 33-7/16 inch above the ceiling line, is convenient for removing water
and avoiding piping contact with beams, etc.
6. FRESH AIR INTAKE AND BRANCH DUCTING ARE AVAILABLE (on-site work)

OC246-4
●●
2PART NAMES AND FUNCTIONS
On the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button.
●● Operation buttons
●● Remote controller
Auto Air Swing Vane 
Disperses airflow up and 
down and adjusts the angle 
of airflow direction.
Grille
Filter 
Remove dust and pollutants 
from return air
Horizontal Air Outlet 
Sets airflow horizontal automatically 
during cooling or dehumidifying.
Air Intake 
Returns air from room.
●● Indoor (Main) Unit
TIMER OFF TIMER 
CHECK SETTEMP.
DRY COOL 
FAN 
CLOCK AUTO AUTO 
START STOP
MODE TIMER ON/OFF CLOCK/TIMER FAN SPEED AIR DISCHARGE FILTER
CHECK
TEST RUN
AIR SWEEP
SETTEMP. TIMER SET
F
FAN 
SPEED
SWING
AUTO 
RETURN
REMOTE CONTROLLER 
PAR-JC240KUS
FILTER button
This resets the filter service indica-
tion display.
TIMER ON/OFF button
This switches between continuous
operation and the timer operation.
SET TEMPERATURE
button
This sets the room temperature.
The temperature setting can be per-
formed in 2-F units.
Setting range :
Cooling 65-F to 87-F
CHECK-TEST RUN button
Press twice this button to perform an
inspection check or test operation.
Do not use it for normal operation.
AIR SWEEP button
This switches the horizontal louver
motion ON and OFF.
CLOCK/TIMER button
This sets or switches the current
time,start time and stop time.
FAN SPEED button
This sets the ventilation fan speed.
AIR DISCHARGE
button
This adjusts the vertical angle of the
vane.
ON/OFF button
This switches between the opera-
tion and stop modes each time it is
press. The lamp on this button
lights during operation.
OPERATION MODE
button
Press this button to switch the cool-
ing,electronic dry (Dehumidify),
fan modes.
Cau
●O
●W
●W
T
●“N
(
(Not available for this model.)

OC246-5
●●Display
le 
TIMER OFF TIMER 
CHECK SETTEMP.
DRY COOL 
FAN 
CLOCK AUTO AUTO 
START STOP
MODE TIMER ON/OFF CLOCK/TIMER FAN SPEED AIR DISCHARGE FILTER
CHECK
TEST RUN
AIR SWEEP
SETTEMP. TIMER SET
F
FAN 
SPEED
SWING
AUTO 
RETURN
REMOTE CONTROLLER 
PAR-JC240KUS
Operation lamp
This lamp lights during operation,
goes off when the unit stops and
flashes when a malfunction occurs.
CENTRALLY
CONTROLLED display
This indicates when the unit is con-
trolled by optional features such as
central control type remote controller.
TIMER display
This indicates when the continuous
operation and time operation modes
are set.
It also display the time for the timer
operation at the same time as when
it is set.
OPERATION MODE display
This indicates the operation mode.
CHECK display
This indicates when a malfunction
has occurred in the unit which should
be checked.
display
This lamp lights when electricity is
supplied to the unit.
display
This displays the selected setting
temperature.
CLOCK display
The current time , start time and stop
time can be displayed in ten second
intervals by pressing the time switch
button.The start time or stop time is
always displayed during the timer
operation.
AIR DISCHARGE display
This displays the air direction.
display
The temperature of the return air is
displayed during operation.The dis-
play range is 47° to 97°F.The display
flashes 47°F when the actual tem-
perature is less than 47° and flashes
97°F when the actual temperature is
greater than 97°F.
In this display example on the bottom left, a condi-
tion where all display lamps light is shown for
explanation purposes although this differs from
actual operation.
display
This display lights in the check mode
or when a test operation is per-
formed.
CHECK MODE
TEST RUN
display
This lamp lights when the filter needs
to be cleaned.
FAN SPEED display
The selected fan speed is displayed.
Caution
●Only the display lights when the unit is stopped and power supplied to the unit.
●When power is turned ON for the first time the (CENTRAL CTRL) display appears to go on momentarily but this is not a malfunction.
●When the central control remote control unit, which is sold separately, is used the ON-OFF button,OPERATION MODE button and SET
TEMP button do not operate.
●“NOT AVAILABLE” is displayed when the AIR SWEEP button are pressed.
(AIR SWEEP function is not provided for PL series.)
FILTER

4
OC246-6
3SPECIFICATIONS


2.0 
1.2 






10-3/16
Capacity 
Moisture removal 
Power Consumption 
EER 
SEER 
INDOOR UNIT MODELS 
External finish 
Power supply 
Max.fuse size (time delay) 
Min.ampacity 
Fan motor 

Airflow Hi-Lo 
Sound level Hi-Lo 
Unit drain pipe O.D. 

Dimensions 

Weight 
External finish(GRILLE) 

Dimensions 
(GRILLE) 
Weight(GRILLE) 
OUTDOOR UNIT MODELS 

*1 

*1 
*1 







Dry 
Wet 


W 
D 
H 


W 
D 
H
Btu/h 
Pints/h 
kW 




V,phase,Hz 
A 
A 
F.L.A. 
CFM 
CFM 
dB

in. 
in. 
in. 
in. 
lb 

in. 
in. 
in. 
lb
PL18AK
Model
18,400 
5.3 
1.85 
9.9 
10.2 
PL18AK 





710-530 
670-490 
37-31 




53 





PU18EK1

















31,00 
9.6 
3.17 
9.8 
10.6 
PL30AK 







43-45 



11-3/4 






PU30EK1















45-37 




71 



PL24AK
24,000 
7.2 
2.65 
9.1 
10.0 
PL24AK 





990-710 
950-670 
41-33 










PU24EK1
PL36AK
36,500 
11.1 
3.64 
10.0 
10.5 
PL36AK 





1060-780 
1020-740 











PU36EK1


PL42AK
42,500 
12.6 
4.08 
10.4 
10.8 
PL42AK 


















PU42EK7
PL30AK






Galvanized sheets with gray heat insulation 
115 , 1 , 60 
15 





1-1/4 
33-1/16 
33-1/16 

66 
Munsell 0.7Y 8.59/0.97 
37-3/8 
37-3/8 
1-3/16 
11 

Item
NOTES : *1.Rating conditions (cooling)-indoor : 80-FDB,67-FWB outdoor :95-FDB,75-FWB. 
Operating range
Indoor intake air temperature
95-FDB,71-FWB 
67-FDB,57-FWB 

Outdoor intake air temperature
115-FDB 
0-FDB* 

Cooling

Maximum 
Minimum 

*In case of the wind baffle is installed.

(In case of the wind baffle is not installed, the minimum temperature will be 23-FDB.) 


PL12AK
12,500 
3.8 
1.26 
9.9 
10.1 
PL12AK 





560-420 
530-390 
32-27 




49 





PU12EK
3.0 
2.6 

MODELS : PL12/18/24/30/36/42AK
P
P
P
P
P
Note
M
P
P
P
P
P
P
P
MO
1.
CO

OC246-7
DATA4
Models
Indoor air Outdoor intake air DB temperature(-F)
PL18AK
71 
67 
63 
62.5 
60 
59 
71 
67 
63 
62.5 
60 
59 
71 
67 
63 
62.5 
60 
59 
71 
67 
63 
62.5 
60 
59 
71 
67 
63 
62.5 
60 
59 
71 
67 
63 
62.5 
60 
59
TC 
14.9 
13.9 
13.0 
12.9 
12.4 
12.2 
21.9 
20.5 
19.2 
19.0 
18.3 
18.0 
28.5 
26.8 
25.1 
24.8 
23.8 
23.4 
36.9 
34.6 
32.4 
32.1 
30.8 
30.3 
43.4 
40.7 
38.1 
37.7 
36.3 
35.6 
50.5 
47.4 
44.4 
43.9 
42.2 
41.5 

SHC 
10.1 
11.4 
12.4 
11.1 
10.7 
10.4 
14.7 
16.6 
18.1 
16.2 
15.5 
15.2 
19.2 
21.7 
23.6 
21.1 
20.3 
19.8 
23.7 
27.0 
29.5 
26.4 
25.3 
24.7 
25.3 
29.3 
32.5 
28.8 
27.6 
26.9 
27.9 
32.7 
36.5 
32.2 
30.8 
30.1 

TPC 
1.05 
1.02 
1.00 
1.00 
0.99 
0.98 
1.54 
1.50 
1.47 
1.47 
1.45 
1.44 
2.20 
2.16 
2.11 
2.10 
2.08 
2.07 
2.63 
2.58 
2.53 
2.52 
2.49 
2.47 
3.02 
2.96 
2.90 
2.89 
2.85 
2.84 
3.39 
3.32 
3.25 
3.24 
3.20 
3.18 

TC 
14.5 
13.6 
12.7 
12.5 
12.0 
11.8 
21.4 
20.0 
18.6 
18.5 
17.7 
17.4 
27.9 
26.0 
24.3 
24.1 
23.1 
22.7 
36.1 
33.6 
31.4 
31.3 
29.9 
29.3 
42.5 
39.6 
37.0 
36.6 
35.2 
34.5 
49.4 
46.1 
43.1 
42.7 
40.9 
40.2 


SHC 
9.9 
11.1 
12.1 
10.8 
10.4 
10.1 
14.4 
16.2 
17.6 
15.7 
15.1 
14.7 
18.8 
21.1 
22.9 
20.5 
19.6 
19.2 
23.2 
26.2 
28.6 
25.6 
24.5 
23.9 
24.7 
28.5 
31.5 
27.9 
26.7 
26.1 
27.3 
31.8 
35.4 
31.2 
29.9 
29.2 

TPC 
1.10 
1.07 
1.05 
1.05 
1.03 
1.03 
1.61 
1.58 
1.54 
1.54 
1.52 
1.51 
2.31 
2.26 
2.21 
2.20 
2.18 
2.16 
2.76 
2.70 
2.64 
2.64 
2.60 
2.59 
3.17 
3.10 
3.04 
3.03 
2.99 
2.97 
3.56 
3.48 
3.40 
3.39 
3.35 
3.33 


TC 
14.1 
13.1 
12.2 
12.1 
11.6 
11.4 
20.7 
19.3 
18.0 
17.8 
17.1 
16.8 
27.0 
25.2 
23.5 
23.2 
22.3 
21.9 
34.9 
32.5 
30.3 
30.0 
28.8 
28.3 
41.1 
38.3 
35.7 
35.3 
33.9 
33.3 
47.9 
44.6 
41.6 
41.2 
39.5 
38.7 

SHC 
9.6 
10.7 
11.6 
10.4 
10.0 
9.8 
13.9 
15.6 
16.9 
15.2 
14.5 
14.2 
18.2 
20.4 
22.1 
19.8 
19.0 
18.5 
22.4 
25.3 
27.6 
24.7 
23.6 
23.1 
23.9 
27.6 
30.4 
26.9 
25.8 
25.2 
26.4 
30.7 
34.2 
30.1 
28.8 
28.1 

TPC 
1.18 
1.15 
1.13 
1.12 
1.11 
1.10 
1.74 
1.69 
1.66 
1.65 
1.63 
1.62 
2.49 
2.43 
2.37 
2.36 
2.33 
2.31 
2.97 
2.90 
2.84 
2.83 
2.79 
2.77 
3.41 
3.33 
3.26 
3.25 
3.20 
3.18 
3.83 
3.74 
3.65 
3.64 
3.59 
3.56 

TC 
13.5 
12.5 
11.6 
11.5 
11.1 
10.8 
19.8 
18.4 
17.1 
17.0 
16.3 
16.0 
25.8 
24.0 
22.4 
22.1 
21.2 
20.8 
33.4 
31.0 
28.9 
28.6 
27.4 
26.9 
39.3 
36.5 
34.0 
33.7 
32.3 
31.7 
45.7 
42.5 
39.6 
39.2 
37.6 
36.9 

SHC 
9.2 
10.3 
11.1 
9.9 
9.5 
9.3 
13.3 
14.9 
16.1 
14.5 
13.8 
13.5 
17.4 
19.4 
21.1 
18.9 
18.0 
17.6 
21.4 
24.2 
26.3 
23.5 
22.5 
21.9 
22.9 
26.3 
29.0 
25.7 
24.5 
23.9 
25.2 
29.3 
32.5 
28.7 
27.4 
26.8 

TPC 
1.29 
1.26 
1.23 
1.22 
1.20 
1.20 
1.90 
1.85 
1.80 
1.80 
1.77 
1.75 
2.72 
2.65 
2.58 
2.57 
2.53 
2.51 
3.26 
3.17 
3.09 
3.08 
3.03 
3.01 
3.74 
3.64 
3.55 
3.53 
3.48 
3.45 
4.19 
4.08 
3.97 
3.96 
3.90 
3.87 

TC 
12.8 
11.9 
11.0 
10.9 
10.5 
10.2 
18.8 
17.5 
16.2 
16.1 
15.4 
15.1 
24.6 
22.8 
21.2 
21.0 
20.1 
19.7 
31.7 
29.4 
27.3 
27.1 
25.9 
25.4 
37.4 
34.6 
32.2 
31.9 
30.5 
29.9 
43.5 
40.3 
37.5 
37.1 
35.5 
34.8 

SHC 
8.7 
9.7 
10.5 
9.4 
9.0 
8.8 
12.7 
14.1 
15.3 
13.7 
13.1 
12.8 
16.5 
18.5 
19.9 
17.9 
17.1 
16.6 
20.4 
23.0 
24.9 
22.3 
21.3 
20.7 
21.7 
24.9 
27.4 
24.3 
23.2 
22.6 
24.0 
27.8 
30.8 
27.2 
25.9 
25.3 


TPC 
1.41 
1.37 
1.33 
1.32 
1.30 
1.29 
2.07 
2.01 
1.95 
1.94 
1.91 
1.89 
2.97 
2.87 
2.79 
2.78 
2.74 
2.71 
3.55 
3.44 
3.34 
3.33 
3.27 
3.25 
4.08 
3.95 
3.84 
3.82 
3.76 
3.73 
4.57 
4.43 
4.30 
4.28 
4.21 
4.18 

IWB 
(-F) 

DB 75-F (50%RH) 
DB 72-F (50%RH) 
DB 70-F (50%RH)
DB 75-F (50%RH) 
DB 72-F (50%RH) 
DB 70-F (50%RH)
DB 75-F (50%RH) 
DB 72-F (50%RH) 
DB 70-F (50%RH)
DB 75-F (50%RH) 
DB 72-F (50%RH) 
DB 70-F (50%RH)
65 75 85 95 105
670 
0.12
Airflow 
(CFM) 
B.F
PL24AK 950

0.08
PL30AK 1020

0.10
PL36AK 1020

0.10
DB 75-F (50%RH) 
DB 72-F (50%RH) 
DB 70-F (50%RH)
PL42AK

Notes 1. B.F. : Bypass Factor, IWB :Intake air wet-bulb temperature 
TC :Total Capacity (x103 Btu/h), SHC : Sensible Heat Capacity (x103 Btu/h)

TPC :Total Power Consumption (kW) 
2. SHC is based on 80-FDB of indoor intake air temperature. 
MODEL Refrigerant piping length (one way)
PL12AK 
PL18AK

PL24AK 
PL30AK 
PL36AK 
PL42AK
1.0 
1.0 
1.0 
1.0 
1.0 
1.0
25ft
0.992 
0.992 
0.981 
0.981 
0.981 
0.975
40ft
0.983 
0.983 
0.968 
0.968 
0.968 
0.955
55ft
0.978 
0.978 
0.952 
0.952 
0.952 
0.935
70ft
0.966 
0.966 
0.940 
0.940 
0.940 
0.918
85ft
0.959 
0.959 
0.925 
0.925 
0.925 
0.900
100ft
0.950 
0.950 
0.913 
0.913 
0.913 
0.884
115ft
0.945 
0.945 
0.900 
0.900 
0.900 
0.869
130ft


0.886 
0.886 
0.886 
0.855
150ft


0.874 
0.874 
0.874 
0.840
164ft
1020 
0.06
TC 
12.2 
11.3 
10.5 
10.4 
9.9 
9.7 
18.0 
16.6 
15.4 
15.3 
14.6 
14.3 
23.5 
21.7 
20.1 
19.9 
19.1 
18.7 
30.3 
28.0 
26.0 
25.7 
24.6 
24.1 
35.7 
33.0 
30.6 
30.3 
29.0 
28.4 
41.6 
38.5 
35.7 
35.3 
33.7 
33.1 

SHC 
8.3 
9.3 
10.0 
8.9 
8.5 
8.3 
12.1 
13.5 
14.5 
13.0 
12.4 
12.1 
15.8 
17.6 
19.0 
17.0 
16.2 
15.8 
19.5 
21.9 
23.7 
21.2 
20.2 
19.7 
20.8 
23.8 
26.1 
23.1 
22.0 
21.5 
22.9 
26.5 
29.3 
25.8 
24.6 
24.0 

TPC 
1.51 
1.46 
1.41 
1.41 
1.38 
1.37 
2.22 
2.14 
2.07 
2.06 
2.03 
2.01 
3.18 
3.06 
2.97 
2.96 
2.91 
2.88 
3.81 
3.66 
3.55 
3.54 
3.48 
3.44 
4.37 
4.21 
4.08 
4.06 
3.99 
3.96 
4.90 
4.72 
4.57 
4.55 
4.47 
4.43 

115
530 
0.23
PL12AK
DB 75-F (50%RH) 
DB 72-F (50%RH) 
DB 70-F (50%RH)
MODELS : PL18/24/30/36/42AK
1. PERFORMANCE DATA
COOLING CAPACITY

OC246-8
N
3
SHF=0.81
Total power consumption (kW) Total capacity (x103Btu/h)
Outdoor intake air DB temperature ( F)
36
30
24
18
12
3.0
2.5
2.0
1.5
63
67
71
63
67
71
023 3235 45 55 65(67) 75 85 95 105 115
Indoor intake air WB temperature ( F)
Indoor intake air WB temperature ( F)
2. PERFORMANCE CURVE
NOTES : A point on the curve shows the reference point.
PL12AK COOLING CAPACITY PL18AK COOLING CAPACITY
PL24AK COOLING CAPACITY PL30AK COOLING CAPACITY
Total power consumption (kW) Total capacity (x103Btu/h)
Outdoor intake air DB temperature ( F)
30
24
18
12 

2.5
2.0
1.5
1.0
63
67
71
63
67
71
SHF=0.81
023 3235 45 55 65(67) 75 85 95 105 115
Indoor intake air WB temperature ( F)
Indoor intake air WB temperature ( F)

Total power consumption (kW) Total capacity (x103Btu/h)
Outdoor intake air DB temperature ( F)
24
18
12
6 

1.4
1.2
1.0
0.8
63
67
71
63
67
71
SHF=0.82
023 3235 45 55 65(67) 75 85 95 105 115
Indoor intake air WB temperature ( F)
Indoor intake air WB temperature ( F)
1.6
SHF=0.78
Total power consumption (kW) Total capacity (x103Btu/h)
Outdoor intake air DB temperature ( F)
42
36
30
24

3.5
3.0
2.5
2.0
63
67
71
63
67
71
023 3235 45 55 65(67) 75 85 95 105 115
4.0
Indoor intake air WB temperature ( F)
Indoor intake air WB temperature ( F)

OC246-9
NOTES : A point on the curve shows the reference point.
PL36AK COOLING CAPACITY PL42AK COOLING CAPACITY
SHF=0.72
Total power consumption (kW) Total capacity (x103Btu/h)
Outdoor intake air DB temperature ( F)
48
42
36
30

4.0
3.5
3.0
2.5
63
67
71
63
67
71
023 3235 45 55 65(67) 75 85 95 105 115
4.5
Indoor intake air WB temperature ( F)
Indoor intake air WB temperature ( F)
SHF=0.69
Total power consumption (kW) Total capacity (x103Btu/h)
Outdoor intake air DB temperature ( F)
54
48
42
36

4.5
4.0
3.5
3.0
63
67
71
63
67
71
023 3235 45 55 65(67) 75 85 95 105 115
5.0
Indoor intake air WB temperature ( F)
Indoor intake air WB temperature (-F)
3
7
1
3
7
1

Da
Air
A
(p
<P
OC246-10
350 
340 
330 
320 
310 
300 
290 
280 
270 
260 
250 
240 
230 
220 
210 
200 
190 
180 
170 
160 
150
(psi.G)
Condensing pressure
30 40 50 60 70 80 90 100 110
Outdoor ambient temperature DB( F)
Indoor DB 
temperature( F)
86 
80 
75 
70
100 

90 

80 

70 

60 

50 

40 

30 

20
(psi.G)
Suction pressure
30 40 50 60 70 80 90 100 110
Outdoor ambient temperature DB( F)
86 
80 
75 
70
Indoor DB temperature( F)
<PL18AK>
COOLING MODE
3. CONDENSING PRESSURE AND SUCTION PRESSURE
Data is based on the condition of indoor humidity 50%.
Air flow should be set at HI.
A point on the curve shows the reference point.
<PL12AK>
350 
340 
330 
320 
310 
300 
290 
280 
270 
260 
250 
240 
230 
220 
210 
200 
190 
180 
170 
160 
150
(psi.G)
Condensing pressure
30 40 50 60 70 80 90 100 110
Outdoor ambient temperature DB( F)
Indoor DB 
temperature( F)
86 
80 
75 
70
100 

90 

80 

70 

60 

50 

40 

30 

20
(psi.G)
Suction pressure
30 40 50 60 70 80 90 100 110
Outdoor ambient temperature DB( F)
86 
80 
75 
70
Indoor DB temperature( F)
COOLING MODE
(p
<