Mitsubishi Electric PEH-RP8MYA Operating manual

TECHNICAL & SERVICE MANUAL
AIR-COOLED SPLIT-TYPE
PACKAGED AIR CONDITIONERS
For use with the R410A
HEAT PUMP PEH-RP8MYA
PEH-RP10MYA
Models
<Indoor unit>
2004

Page
Contents
1 SAFETY PRECAUTION ..........................................................................................................
2 PART NAMES AND FUNCTIONS ............................................................................................
3 SPECIFICATIONS ..................................................................................................................
4 OUTLINE AND DIMENSIONS................................................................................................
5 ELECTRICAL WIRING DIAGRAM .........................................................................................
6 TECHNICAL DATA ................................................................................................................
[1] Capacity/Input Ratio against Changes in Room Airflow Rate ...........................................
[2] Capacity table
[3] Correction factors
...................................................................................................................
..............................................................................................................
[4] Airflow Characteristic Curves ............................................................................................
[6] Standard Operation Data ................................................................................................
NC Curve (Indoor unit)......................................................................................................
7 SERVICE DATA ......................................................................................................................
[1] Appearance of Equipment ................................................................................................
[2] Internal Construction .........................................................................................................
[3] Refrigerant Circuit .............................................................................................................
8 FUNCTION OF SWITCH ON INDOOR CIRCUIT BOARD .....................................................
[1] DIP SW1 for model Selection (DIP SW1 has been set at factory) ....................................
[2] DIP SW2 for Capacity Setting (DIP SW2 has been set at factory) ...................................
[3] DIP SWE for Emergency Operation..................................................................................
9 TEST RUN ..............................................................................................................................
[1] Before test run ..................................................................................................................
[2] Test run procedures ..........................................................................................................
[3] Self-diagnosis ...................................................................................................................
[4] Remote controller diagnosis .............................................................................................
[5] Center of Gravity (Indoor unit) ..........................................................................................
[7]
1
3
5
7
10
11
11
12
16
17
18
20
20
21
21
22
22
22
22
23
23
23
25
27
17
19

- 1 -
1SAFETY PRECAUTION
Cautions for units utilizing refrigerant R410A
CAUTIONS RELATED TO NEW REFRIGERANT
Use new refrigerant pipes.
Make sure that the inside and outside of refrige-
rant piping is clean and it has no contamination
such as sulfur hazardous for use, oxides, dirt,
shaving particles, etc.
In addition, use pipes with specified thickness.
Store the piping to be used during installation
indoors and keep both ends of the piping sealed
until just before brazing. (Leave elbow joints, etc.
in their packaging.)
Use ester oil, ether oil or alkylbenzene oil (small
amount) as the refrigerant oil applied to flares
and flange connections.
In case of using the existing pipes for R22, be careful with
the followings.
· Change flare nut to the one provided with this product.
Use a newly flared pipe.
· Avoid using thin pipes.
Charge refrigerant from liquid phase of gas
cylinder.
If the refrigerant is charged from gas phase, composition
change may occur in refrigerant and the efficiency will be
lowered.
Do not use refrigerant other than R410A.
If other refrigerant (R22 etc.) is used, chlorine in refrige-
rant can cause deterioration of refrigerant oil etc.
Use a vacuum pump with a reverse flow check
valve.
Vacuum pump oil may flow back into refrigerant cycle and
that can cause deterioration of refrigerant oil etc.
Use the following tools specifically designed for
use with R410A refrigerant.
The following tools are necessary to use R410A refrigerant.
Keep the tools with care.
If dirt, dust or moisture enter into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
Do not use a charging cylinder.
If a charging cylinder is used, the composition of refrigera-
nt will change and the efficiency will be lowered.
Flare tool
Electronic refrigerant
charging scale
Vacuum pump adaptor
Size adjustment gauge
Gauge manifold
Torque wrench
Gas leak detector
Charge hose
Tools for R410A
Contamination inside refrigerant piping can cause deterio-
ration of refrigerant oil etc.
If dirt, dust or moisture enter into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
If large amount of mineral oil enter, that can cause deterio-
ration of refrigerant oil etc.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
[1] Cautions for service
(1) Perform service after collecting the refrigerant left in unit completely.
(2) Do not release refrigerant in the air.
(3) After completing service, charge the cycle with specified amount of refrigerant.
(4) When performing service, install a filter drier simultaneously.
Be sure to use a filter drier for new refrigerant.
[2] Additional refrigerant charge
When charging directly from cylinder
· Check that cylinder for R410A on the market is syphon type.
· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)

- 2 -
Gravimeter
Unit
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
No. Specifications
1Gauge manifold ·Only for R410A
·Use the existing fitting specifications. (UNF1/2)
·Use high-tension side pressure of 5.3MPa·G or over.
2Charge hose ·Only for R410A
·Use pressure performance of 5.09MPa·G or over.
3Electronic scale
4Gas leak detector ·Use the detector for R134a, R407C or R410A.
5Adaptor for reverse flow check ·Attach on vacuum pump.
6Refrigerant charge base
7Refrigerant cylinder ·Only for R410A Top of cylinder (Pink)
Cylinder with syphon
8Refrigerant recovery equipment

- 3 -
2PART NAMES AND FUNCTIONS
●Indoor Unit
PEH-RP8MYA
PEH-RP10MYA
Air intake duct flange
Air outlet duct flange
Air outlet
Air intake
(sucks the air inside the room into the unit)
● Operation buttons
PAR-20MAA
ON/OFF
CENTRALLY CONTROLLED
ERROR CODE
CLOCK
ON OFF
˚C
CHECK
CHECK MODE
FILTER
TEST RUN
FUNCTION
˚C
1Hr.
NOT AVAILABLE
STAND BY
DEFROST
FILTER
CHECK TEST
TEMP.
TIMER SET
This sets the ventilation fan speed.
VENTILATION button
Press this button to switch the cooling,
electronic dry (dehumidify), automatic
and heating modes.
OPERATION SWITCH button
This sets the room temperature. The
temperature setting can be performed
in 1:units
Setting range
Cooling 19:to 30:
Heating 17:to 28:
TEMP. ADJUSTMENT button
This switches between continuous
operation and the timer operation.
TIMER button
This switches between the operation
and stop modes each time it is pressed.
The lamp on this button lights during
operation.
ON/OFF button
Only press this button to perform an
inspection check or test operation.
Do not use it for normal operation.
CHECK-TEST RUN button
This switch the horizontal fan motion
ON and OFF.
(Not available for this model.)
LOUVER button
This adjusts the vertical angle of the
ventilation.
AIR DIRECTION button
This resets the filter service indication
display
FILTER button
This sets the current time, start time
and stop time.
TIME SETTING button
This sets the ventilation fan speed.
FAN SPEED button
(Not available for this model.)

- 4 -
Caution
●Only the Power display lights when the unit is stopped and power supplied to the unit.
●When the central control remote control unit, which is sold separately, is used the ON-OFF button, operation switch button
and TEMP. adjustment button do not operate.
●“NOT AVAILABLE”is displayed when the Air speed button are pressed.This indicates that this room unit is not equipped with
the fan direction adjustment function and the louver function.
●When power is turned ON for the first time, it is normal that “H0”is displayed on the room temperature indication (For max.
2minutes). Please wait until this “H0”indication disappear then start the operation.
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.
STANDBY display
The [STANDBY] symbol is only dis-
played from the time the heating
operation starts unit the heated air
begins to blow.
DEFROST display
This indicates when the defrost oper-
ation is performed.
CHECK display
This indicates when a malfunction
has occurred in the unit which should
be checked.
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.
●Display
In this display example on the bot-
tom left, a condition where all dis-
play lamps light is shown for expla-
nation purposes although this differs
from actual operation.
Operation lamp
This lamp lights during operation,
goes off when the unit stops and
flashes when a malfunction occurs.
POWER display
This lamp lights when electricity is
supplied to the unit.
SET TEMPERATURE display
This displays the selected setting
temperature.
AIR DIRECTION display
This displays the air direction.
ROOM TEMPERATURE display
The temperature of the suction air
is displayed during operation. The
display range is 8°C to 39°C. The
display flashes 8°C when the actual
temperature is less than 8°C and
flashes 39°C when the actual tem-
perature is greater than 39°C.
display
This display lights in the check mode
or when a test operation is per-
formed.
CHECK MODE
TEST RUN
This lamp lights when the filter need
to be cleaned.
AIR SPEED display
The selected fan speed is displayed.
FILTER display
PAR-20MAA
ON/OFF
CENTRALLY CONTROLLED
ERROR CODE
CLOCK
ON OFF
˚C
CHECK
CHECK MODE
FILTER
TEST RUN
FUNCTION
˚C
1Hr.
NOT AVAILABLE
STAND BY
DEFROST
FILTER
CHECK TEST
TEMP.
TIMER SET

Specifications of air-source heat pump type packaged air conditioner
(Ceiling concealed type indoor unit)
Model name PEH-RP8MYA
PEH-RP8MYAService Ref.
PEH-RP8MYAService Ref.
PUHZ-RP8YHAService Ref.
Outdoor
unit
Indoor unit
Quantity Symbol
Capacity kcal/h
kW
Indoor side Dry bulb temperature/wet bulb temperature
Outdoor side Dry bulb temperature/wet bulb temperature
Power source
Power consumption kW
Operating current A
Remote controller temperature setting range °C
Airflow direction control
Type ×Quantity
Airflow rate m3/min
External static pressure Pa
Motor output kW
External finish
Unit (H ×W ×D) mm
Panel (H ×W ×D) mm
Heat exchanger type
Air filter
Insulation material
Refrigerant piping size Liquid/Gas
φ mm
φ mm
Drain piping size
Noise level dB(A)
Net weight kg
Minimum wire thickness
Circuit breaker
Operation control device (provided)
Decoration panel (Option)
Other mountable major options
Accessories
Special note, Non-standard specifications, etc.
1. The cooling and heating capacities are the maximum capacities that were obtained by operating in the above
air conditions and with a refrigerant pipe of about 7.5 m.
2. The actual capacity characteristics vary with the combination of indoor and outdoor units. See the technical
informaition.
3. The operating noise is the data that was obtained by measuring it 1.5 m from the unit’s bottom in an anechoic
room. (Noise meter A-scale value)
4. The
5. Refer to the service manual of outdoor unit for the outdoor unit’s specifications.
figure of Electrical characteristic, Airflow rate, Noise level, indicates, at 50 Pa setting.
Cooling Heating
16,300 19,300
19.0 22.4
27 °C/19 °C 20 °C/–
35 °C/24 °C7°C/6 ˚C
3N~ 380/400/415V 50Hz
0.65/0.65/0.65 0.65/0.65/0.65
1.12/1.12/1.12 1.12/1.12/1.12
19 ~ 30 17 ~ 28
–
Sirrocco fan ×2
60
50/150
0.75
Galvanizing
428 ×1380 ×650
–
Cross fin
Saran net
Polyethylene foam
9.52/25.4
25.4 (RC1)
49 (at 50 Pa)
70
1.6 mm
15 A
Remote controller: PAR-20MAA
–
–
Electrical characteristics
Fan
External dimension
External wiring
Composing parts
Notes:
Installation manual, Operation manual,
Remote controller
–
Air con-
dition
- 5 -
3SPECIFICATIONS

PEH-RP10MYA
Cooling Heating
18,900 23,200
22.0 27.0
27 °C/19 °C 20 °C/–
35 °C/24 °C7°C/ 6 °C
3N~ 380/400/415V 50 Hz
0.94/0.94/0.94 0.94/0.94/0.94
1.64/1.64/1.64 1.64/1.64/1.64
19 ~ 30 17 ~ 28
–
Sirrocco fan ×2
80
50/150
1.23
Galvanizing
428 ×1,580 ×650
–
Cross fin
Saran net
Polyethyene foam
12.7/28.58
25.4 (RC1)
53 (at 50 Pa)
80
1.6 mm
15 A
Remote controller: PAR-20MAA
–
–
Installation manual, Operation manual,
Remote controller
–
PUHZ-RP10YHA
PEH-RP10MYA
PEH-RP10MYA
Specifications of air-source heat pump type packaged air conditioner
(Ceiling concealed type indoor unit)
Model name
Service Ref.
Service Ref.
Service Ref.
Outdoor
unit
Indoor unit
Quantity Symbol
Capacity kcal/h
kW
Indoor side Dry bulb temperature/wet bulb temperature
Outdoor side Dry bulb temperature/wet bulb temperature
Power source
Power consumption kW
Operating current A
Remote controller temperature setting range °C
Airflow direction control
Type ×Quantity
Airflow rate m3/min
External static pressure Pa
Motor output kW
External finish
Unit (H ×W ×D) mm
Panel (H ×W ×D) mm
Heat exchanger type
Air filter
Insulation material
Refrigerant piping size Liquid/Gas
φ mm
φ mm
Drain piping size
Noise level dB(A)
Net weight kg
Minimum wire thickness
Circuit breaker
Operation control device (provided)
Decoration panel (Option)
Other mountable major options
Accessories
Special note, Non-standard specifications, etc.
1. The cooling and heating capacities are the maximum capacities that were obtained by operating in the above
air conditions and with a refrigerant pipe of about 7.5 m.
2. The actual capacity characteristics vary with the combination of indoor and outdoor units. See the technical
informaition.
3. The operating noise is the data that was obtained by measuring it 1.5 m from the unit’s bottom in an anechoic
room. (Noise meter A-scale value)
4. The
5. Refer to the service manual of outdoor unit for the outdoor unit’s specifications.
figure of Electrical characteristic, Airflow rate, Noise level, indicates, at 50 Pa setting.
Electrical characteristics
Fan
External dimension
External wiring
Composing parts
Notes:
Air con-
dition
- 6 -

(1) Indoor Unit
• Model PEH-RP8MYA
Note: When connecting duct to the inlet side, remove the air filter attached to the unit body, and mount
an air filter onto the inlet duct side separately.
AIR INLET SENSOR
REFRIGERANT PIPE 12.7
(1/2 BRAZE)
REFRIGERANT PIPE 25.4
(1 BRAZE)
AIR INLET AIR OUTLET
POWER SUPPLY
WIRING HOLE 27
(AIR INLET SIDE)
CONTROLLER
WIRING HOLE 27
(AIR INLET SIDE)
CONNECT WIRE (PEH-PUH)
WIRING HOLE 27
(AIR INLET SIDE)
ACCESSORY PIPE
(USE FOR ONLY R410A)
9.52 (3/8 BRAZE)
DUCT EARTH POINT
(BOTH DUCT SIDE)
152
650
428
95 156
AIR INLET DUCT
FLANGE
24- 3.1 HOLES
34
31
1102
104
130130130130130130130130
31
344 20
15
7053050
130
130 42
42
DRAIN: Rc 1
CONTROL BOX
4- 12 HOLES
22- 3.1 HOLES
AIR OUTLET DUCT
FLANGE
33 562
382
25 100 100 25
1240
20 20
1280
15
40
120
4513013013013013013013045
40
1320
1000
120
1264
98250
14
(FOR HUNGING
BOLT M10)
<FIELD SUPPLY>
15
100
40
210 116
4235
46
55 55 156
1380
131 200 199
928
1240
20
530
13132 200 199
400
730
200
1280
1880
200
20
428500
25 75
(1)
(2)
(3)
(1) When connecting air inlet
(2) When installing the suspension fixtures prior to installation of the indoor unit without inlet duct
(3) When hanging the indoor unit directly without inlet duct
(A) Service space
(B) Suspension bolt pitch
(C) Air inlet
(D) Air outlet
(A)
(A)
(C)
(B) (B)
(D)
- 7 -
4OUTLINE AND DIMENSIONS

- 8 -
POWER SUPPLY
WIRING HOLE 27
(AIR INLET SIDE)
CONTROLLER
WIRING HOLE 27
(AIR INLET SIDE)
CONNECT WIRE
(PEH-PUH)
WIRING HOLE 27
(AIR INLET SIDE)
DUCT EARTH POINT
(BOTH DUCT SIDE)
428
1440 40
220
40
1520
1000
220
1464
98
250
14
46
55 55 156
1580
AIR INLET DUCT
FLANGE
26- 3.1 HOLES
34
66
1302
104
130130130130130130130130
66
CONTROL BOX
4- 12 HOLES
22- 3.1 HOLES
AIR OUTLET DUCT
FLANGE
20 20 1480
15
45130130130130
130
130
45
(FOR HUNGING
BOLT M10)
<FIELD SUPPLY>
100
40
423
5
131 200 199
130
130
(1) When connecting air inlet
(2) When installing the suspension fixtures prior to installation of the indoor unit without inlet duct
(3) When hanging the indoor unit directly without inlet duct
(A) Service space
(B) Suspension bolt pitch
(C) Air inlet
(D) Air outlet
1440
20
530
13132 200 199
400
730
200
1480
2080
200
20
(A) (C)
(B) (B)
(D)
AIR INLET SENSOR
REFRIGERANT PIPE 12.7
(1/2 BRAZE)
REFRIGERANT PIPE
28.6 (1-1/8 BRAZE)
AIR INLET AIR OUTLET
152
650
95 156
344 20
15
7053050
130
130 42
42
DRAIN: Rc 1
33 562
382
25 100 100 25
15
210 116
928
428500
25 75
(1)
(2)
(3)
(A)
•Model PEH-RP10MYA
Note: When connecting duct to the inlet side, remove the air filter attached to the unit body, and mount
an air filter onto the inlet duct side separately.