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PEFY-P12NMLU-E
Operation Manual
23 pgs3.12 Mb0
Service Manual
27 pgs1.56 Mb0

Mitsubishi PEFY, PEFY-P06NMLU-E, PEFY-P08NMLU-E, PEFY-P12NMLU-E Service Manual

TECHNICAL & SERVICE MANUAL
Air-Conditioners For Building Application
<Indoor unit>
2005
Models
Ceiling Concealed
Series PEFY
and install the unit at the specified place.
- Improper installation may cause the unit to topple and result in injury.
• Always use an air cleaner, humidifier, electric heater, and other accessories specified by Mitsubishi Electric.
- Ask an authorized technician to install the accessories. Improper
installation by the user may result in water leakage, electric shock, or fire.
• Never repair the unit. If the air conditioner must be repaired, consult the dealer.
- If the unit is repaired improperly, water leakage, electric shock, or
fire may result.
• Do not touch the heat exchanger fins.
- Improper handling may result in injury.
• If refrigerant gas leaks during installation work, ventilate the room.
- If the refrigerant gas comes into contact with a flame, poisonous
gases will be released.
• Install the air conditioner according to this Installation Manual.
- If the unit is installed improperly, water leakage, electric shock, or
fire may result.
• Have all electric work done by a licensed electrician according to “Electric Facility Engineering Standard” and “Interior Wire Regulations”and the instructions given in this manual and al­ways use a special circuit.
- If the power source capacity is inadequate or electric work is per-
formed improperly, electric shock and fire may result.
• Securely install the cover of control box and the panel.
- If the cover and panel are not installed properly,dust or water may
enter the outdoor unit and fire or electric shock may result.
• When installing and moving the air conditioner to another site, do not charge the it with a refrigerant different from the refrig­erant specified on the unit.
- If a different refrigerant or air is mixed with the original refrigerant,
the refrigerant cycle may malfunction and the unit may be dam­aged.
• If the air conditioner is installed in a small room, measures must be taken to prevent the refrigerant concentration from exceeding the safety limit even if the refrigerant should leak.
- Consult the dealer regarding the appropriate measures to pre-
vent the safety limit from being exceeded. Should the refrigerant leak and cause the safety limit to be exceeded, hazards due to lack of oxygen in the room could result.
• When moving and reinstalling the air conditioner, consult the dealer or an authorized technician.
- If the air conditioner is installed improperly, water leakage, elec-
tric shock, or fire may result.
• After completing installation work, make sure that refrigerant gas is not leaking.
- If the refrigerant gas leaks and is exposed to a fan heater, stove,
oven, or other heat source, it may generate noxious gases.
• Do not reconstruct or change the settings of the protection devices.
- If the pressure switch, thermal switch, or other protection device
is shorted and operated forcibly, or parts other than those specified by Mitsubishi Electric are used, fire or explosion may result.
1. Before installation and electric work
s Before installing the unit, make sure you read all the
“Safety precautions”.
s The “Safety precautions” provide very important
points regarding safety. Make sure you follow them.
s This equipment may cause the adverse effect on the
same supply system.
s Please report to or take consent by the supply au-
thority before connection to the system.
Symbols used in the text
Warning:
Describes precautions that should be observed to prevent danger of injury or death to the user.
Caution:
Describes precautions that should be observed to prevent damage to the unit.
Symbols used in the illustrations
: Indicates an action that must be avoided.
: Indicates that impor tant instructions must be followed.
: Indicates a part which must be grounded.
: Indicates that caution should be taken with rotating parts. (This
symbol is displayed on the main unit label.) <Color: Yellow>
: Beware of electric shock (This symbol is displayed on the main
unit label.) <Color: Yellow>
Warning:
Carefully read the labels affixed to the main unit.
Warning:
• Ask the dealer or an authorized technician to install the air con­ditioner.
- Improper installation by the user may result in water leakage, elec-
tric shock, or fire.
• Install the air unit at a place that can withstand its weight.
- Inadequate strength may cause the unit to fall down, resulting in
injuries.
• Use the specified cables for wiring. Make the connections se­curely so that the outside force of the cable is not applied to the terminals.
- Inadequate connection and fastening may generate heat and cause
a fire.
• Prepare for typhoons and other strong winds and earthquakes
2. Precautions for devices that use
Caution:
• Do not use the existing refrigerant piping.
- The old refrigerant and refrigerator oil in the existing piping con­tains a large amount of chlorine which may cause the refrigerator oil of the new unit to deteriorate.
• Use refrigerant piping made of C1220 (Cu-DHP) phosphorus deoxidized copper as specified in the *JIS H3300 “Copper and copper alloy seamless pipes and tubes”. In addition, be sure that the inner and outer surfaces of the pipes are clean and free of hazardous sulphur, oxides, dust/dirt, shaving particles, oils, moisture, or any other contaminant.
- Contaminants on the inside of the refrigerant piping may cause
the refrigerant residual oil to deteriorate.
*JIS: Japanese Industrial Standard
• Store the piping to be used during installation indoors and keep both ends of the piping sealed until just before brazing. (Store elbows and other joints in a plastic bag.)
- If dust, dirt, or water enters the refrigerant cycle, deterioration of
the oil and compressor trouble may result.
• Use ester oil, ether oil or alkylbenzene (small amount) as the refrigerator oil to coat flares and flange connections.
- The refrigerator oil will degrade if it is mixed with a large amount of
mineral oil.
• Use liquid refrigerant to fill the system.
- If gas refrigerant is used to seal the system, the composition of
the refrigerant in the cylinder will change and performance may drop.
• Do not use a refrig
- If another refrigerant (R22, etc.) is used, the chlorine in the refrig-
erant may cause the refrigerator oil to deteriorate.
• Use a vacuum pump with a reverse flow check valve.
- The vacuum pump oil may flow back into the refrigerant cycle and
cause the refrigerator oil to deteriorate.
• Do not use the following tools that are used with conventional refrigerants. (Gauge manifold, charge hose, gas leak detector, reverse flow check valve, refrigerant charge base, vacuum gauge, refriger­ant recovery equipment)
- If the conventional refrigerant and refrigerator oil are mixed in the
• Do not use a charging cylinder.
- Using a charging cylinder may cause the refrigerant to deteriorate.
• Be especially careful when managing the tools.
- If dust, dirt, or water gets in the refrigerant cycle, the refrigerant
may deteriorate.
R410A refrigerant
erant other than R410A.
R410A , the refrigerant may deteriorated.
- If deteriorate.water is mixed in the R410A , the refrigerator oil may
- Since R410A does not contain any chlorine, gas leak detectors for conventional refrigerants will not react to it.
Warning:
Note the following when building a heater in the air conditioning system.
- Leave enough space between units for proper ventilation so that the indoor unit temperature does not exceed 40˚C when windless.
- Keep the heater clean, and take appropriate measures so that the indoor unit does not suck in the dust particles that accumulate on the heater.
- Use the optional heater cable (PAC-YU24HT) to perform an interlocked operation with indoor units.
- Do not build a heater inside the indoor unit.
•
Recommended circuit
FS1
FS2 FS1
FS2
R
S
R
S
CN24
H2
88H
H1
88H
26H
88H
Wiring diagram
1-phase power supply
208V, 230V/60Hz
Control board
FS1, 2 ----- Thermal fuse
H1, H2 ----- Heater
26H --------- Overheat protection
thermostat
88H --------- Electromagnetic contactor
PART NAMES AND FUNCTIONS
2
● Indoor (Main) Unit
● Remote controller
[Operation buttons]
[PAR-21MAA]
● Once the controls are set, the same operation mode can
be repeated by simply pressing the ON/OFF button.
Air inlet
Air outlet
1 [Set Temperature] Button 2 [Timer Menu] Button
[Monitor/Set] Button
3 [Mode] Button
[Return] Button
4 [Timer On/Off] Button
[Set Day] Button
7 [Airflow Up/Down] Button
[Ventilation] Button [Operation] Button
5 [Louver] Button
[Operation] Button
6 [Fan Speed] Button
[Check/Clear] Button
0 [Test run] Button A
8
9
[Filter] Button [ ] Button
B C
D
[ON/OFF] Button Position of built-in room temperature
[Set Time] Button
Ne• ver expose the remote controller to direct sunlight. Doing so can result in the erroneous measure­ment of room temperature.
• Never place any obstacle around the lower right-hand section of the remote controller. Doing so can result in the erroneous measurement of room temperature.
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION
CLEAR
TEST
TEMP.
MENU
BACK DAY
MONITOR/SET
CLOCK
ON/OFF
1
2
3
4D 568 9
0
C
A
B 7
3
SPECIFICATION
3-1. Specification
Notes: *1 Cooling/Heating capacity indicates the maximum value at operation under the following condition.
Cooling: Indoor: 26.7 °C [80 °F] DB/19.4 °C [67 °F] WB Outdoor: 35 °C [95 °F] DB Heating: Indoor: 21.1 °C [70 °F] DB Outdoor: 8.3 °C [47 °F] DB/6.1 °C [43 °F] WB
*2 The operating noise is the data that was obtained in an anechoic room.
Item Model
PEFY
PEFY-P-NMLU-E
-P06NMLU-E PEFY-P08NMLU-E PEFY-P12NMLU-E
Power sourse 208/230V, 60Hz
Capacity *1
Cooling
kW 1.8 2.3 3.5
BTU/h 6000 8000 12000
Heating
kW 2.0 2.6 4.0
BTU/h 6700 9000 13500
Dimension
Height
mm 225
in 8-7/8
Width
mm 790
in 31-1/8
Depth
mm 550
in 21-21/32
Net weight
kg 18
lb 40
FAN
Airflow rate (Low-Middle-High)
m
3
/min 4.8-5.8-7.9 4.8-5.8-7.9 4.8-5.8-9.5
cfm 169-205-279 169-205-279 169-205-335 External static pressure
Pa
208V 5 5 5
230V 5 5 5 Noise level (Low-Middle-High) *2
dB(A)
208V 25-29-36 25-29-36 25-29-40
230V 25-29-36 25-29-36 25-29-40 Filter Standard filter
4
OUTLINES AND DIMENSIONS
PEFY-P06·08·12NMLU-E
Drain pipe
Gas pipe
Liquid pipe
Ceiling surface
Access door
Make the access door at the appointed position properly
for service maintenance.
Required space for service and maintenance.
Suspension bolt hole
4-14X30(9/16X1-3/16) Slot
Air filter
(Accessory)
Note1.Use M10 screw for the Suspension bolt (field supply).
2.Keep the service space for the maintenance from
the bottom when the heat exchanger is cleaned.
3.The direction of air intake can be changed from the
bottom to the rear by attaching the bottom plate
to the air intake side.
4.Drain Pan is changeable from right and left.
5.The dimension is changed, in case the optional
long-life filter is attached.
Rear Air-Intake spec.:Depth 571mm (22-1/2 in.)( 1)
Bottom Air-Intake spec.:Height 241mm (9-1/2 in.)( 2)
Control box
Terminal bed
(Transmission)
Terminal bed
(Power source)
Bottom plate
The part air intake duct is attached.( 3)
(When the air intake duct is used)
Detailed chart around the air intake duct frange.
(3)
(Duct and frange should be supplied in the field.)
mm(in.)
12-¿3(1/8)
Air outlet
Air inlet
23-
¿3(1/8)
450
(17-23/32)
50~150
(1-31/32~5-29/32)
300
(11-13/16)
(17-23/32)
450
25
(1)
500
(19-11/16)
50~150
110
(4-11/32)
)(
80
(3-5/32)
55
(2-3/16)
50X11=550(1-31/32X11=21-21/32)
16
(21/32)
582(22-15/16)
14
(9/16)
459(18-3/32)(Suspension bolt pitch)
15(19/32)
(113(4-15/32))
23
(29/32)
664(26-5/32)(Suspension bolt pitch)
720(28-3/8)
710(27-31/32)
225(8-7/8)( 2)
610(24-1/32)
50
(1-31/32)
80
(3-5/32)
30(1-3/16)
15(19/32)
148
(5-27/32)
13.5
204.5(8-1/16)
50
50
(9/16)
(1-
31/32)
(1-
31/32)
510(20-3/32)
14
(9/16)
127(5)
65.5
(2-19/32)
42.5 (1-11/16)
129
55
(7/32)(7/32)
301(11-7/8) 301(11-7/8)
189
(1/2)(3/8) (7-15/32)
550(21-21/32)( 1)
20(13/16) or more
20(13/16) or more
70
(2-3/4)
2
1
3
(1-31/32
~5-29/32)
Unit :mm(in.)
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