Mitsubishi Electric PUMY-P112VKM3 Operating manual

TECHNICAL & SERVICE MANUAL
OUTDOOR UNIT
HFC
utilized
R410A
March 2017
Note:
•This service manual
describes technical data of
the outdoor units only.
<Outdoor unit>
[Model Name]
Model name
indication
PARTS CATALOG (OCB632)
PUMY-P112VKM3
PUMY-P125VKM3
PUMY-P140VKM3
PUMY-P112YKM3
PUMY-P125YKM3
PUMY-P140YKM3
PUMY-P112VKM3-BS
PUMY-P125VKM3-BS
PUMY-P140VKM3-BS
PUMY-P112YKM3-BS
PUMY-P125YKM3-BS
PUMY-P140YKM3-BS
Salt proof model
PUMY-P112VKM3
PUMY-P125VKM3
PUMY-P140VKM3
PUMY-P112YKM3 PUMY-P112YKME3
PUMY-P125YKM3 PUMY-P125YKME3
PUMY-P140YKM3 PUMY-P140YKME3
PUMY-P112VKM3-BS
PUMY-P125VKM3-BS
PUMY-P140VKM3-BS
PUMY-P112YKM3-BS PUMY-P112YKME3-BS
PUMY-P125YKM3-BS PUMY-P125YKME3-BS
PUMY-P140YKM3-BS PUMY-P140YKME3-BS
[Service Ref.]
CONTENTS
1. SAFETY PRECAUTION .....................................2
2. OVERVIEW OF UNITS.......................................5
3. SPECIFICATIONS ............................................10
4. DATA.................................................................13
5. OUTLINES AND DIMENSIONS .......................27
6. WIRING DIAGRAM...........................................29
7. NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION....... 32
8. TROUBLESHOOTING......................................50
9. ELECTRICAL WIRING ...................................132
10. REFRIGERANT PIPING TASKS ....................139
11. DISASSEMBLY PROCEDURE.......................146
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
No. OCH632
REVISED EDITION-A
Revision:
•Modified the "Ratio of
power input" graph for cool-
ing in "4-2. CORRECTION
BY TEMPERATURE" in
REVISED EDITION-A.
•Some other descriptions
have been also modified.
OCH632 is void.

2
Cautions for units utilizing refrigerant R410A
1-1. CAUTIONS RELATED TO NEW REFRIGERANT
Use new refrigerant pipes.
Store the piping indoors, and both ends of the
piping sealed until just before brazing.
(Leave elbow joints, etc. in their packaging.)
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.
Handle tools with care.
If dirt, dust or moisture enters 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 enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
If large amount of mineral oil enters, that can cause deterio-
ration of refrigerant oil, etc.
Make sure that the inside and outside of refrige-
rant piping is clean and it has no contaminants
such as sulfur, oxides, dirt, shaving particles, etc,
which are hazard to refrigerant cycle.
In addition, use pipes with specified thickness.
The refrigerant oil applied to flare and flange
connections must be ester oil, ether oil or
alkylbenzene oil in a small amount.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
Use the specified refrigerant only.
Never use any refrigerant other than that specified.
Doing so may cause a burst, an explosion, or fire when the
unit is being used, serviced, or disposed of.
Correct refrigerant is specified in the manuals and on the
spec labels provided with our products.
We will not be held responsible for mechanical failure,
system malfunction, unit breakdown or accidents caused
by failure to follow the instructions.
1SAFETY PRECAUTION
OCH632A

3
Unit
Electronic weighing scale
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
[1] Cautions for service
(1) Perform service after recovering 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) If moisture or foreign matter might have entered the refrigerant piping during service, ensure to remove them.
[2] Additional refrigerant charge
When charging directly from cylinder
(1) Check that cylinder for R410A on the market is a syphon type.
(2) Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)
Although "-BS" model has been designed to be resistant to salt damage, observe the following precautions to maintain the
performance of the unit.
(1) Avoid installing the unit in a location where it will be exposed directly to seawater or sea breeze.
(2) If the cover panel may become covered with salt, be sure to install the unit in a location where the salt will be washed away
by rainwater. (If a sunshade is installed, rainwater may not clean the panel.)
(3) To ensure that water does not collect in the base of the outdoor unit, make sure that the base is level, not at angle. Water
collecting in the base of the outdoor unit could cause rust.
(4) If the unit is installed in a coastal area, clean the unit with water regularly to remove any salt build-up.
(5) If the unit is damaged during installation or maintenance, be sure to repair it.
(6) Be sure to check the condition of the unit regularly.
(7) Be sure to install the unit in a location with good drainage.
1-2. PRECAUTIONS FOR SALT PROOF TYPE "-BS" MODEL
No. Tool name 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 weighing 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 —
OCH632A

4
Cautions for refrigerant piping work
New refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410A is same
as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the working
pressure of R410A is 1.6 times higher than that of R22, their sizes of flared sections and flare nuts are different.
1Thickness of pipes
Because the working pressure of R410A is higher compared to R22, be sure to use refrigerant piping with thickness
shown below. (Never use pipes of 0.7 mm or below.)
2Dimensions of flare cutting and flare nut
The component molecules in HFC refrigerant are smaller compared to conventional refrigerants. In addition to that,
R410A is a refrigerant, which has higher risk of leakage because its working pressure is higher than that of other refrig-
erants. Therefore, to enhance airtightness and strength, flare cutting dimension of copper pipe for R410A has been
specified separately from the dimensions for other refrigerants as shown below. The dimension B of flare nut for R410A
also has partly been changed to increase strength as shown below. Set copper pipe correctly referring to copper pipe
flaring dimensions for R410A below. For 1/2 and 5/8 inch pipes, the dimension B changes.
Use torque wrench corresponding to each dimension.
3Tools for R410A (The following table shows whether conventional tools can be used or not.)
1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
0.8
0.8
0.8
1.0
—
0.8
0.8
0.8
1.0
1.0
Nominal
dimensions (in)
Diagram below: Piping diameter and thickness
Outside
diameter (mm)
Thickness (mm)
R410A R22
1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
9.1
13.2
16.6
19.7
—
9.0
13.0
16.2
19.4
23.3
Nominal
dimensions (in)
Flare cutting dimensions
Outside
diameter
Dimension A ( )
+0
-0.4 (mm)
R410A R22
(mm)
1/4
3/8
1/2
5/8
3/4
6.35
9.52
12.70
15.88
19.05
17.0
22.0
26.0
29.0
—
17.0
22.0
24.0
27.0
36.0
Nominal
dimensions (in)
Flare nut dimensions
Outside
diameter
Dimension B (mm)
R410A R22
(mm)
Gauge manifold
Charge hose
Gas leak detector
Refrigerant recovery equipment
Refrigerant cylinder
Applied oil
Safety charger
Charge valve
Vacuum pump
Flare tool
Bender
Pipe cutter
Welder and nitrogen gas cylinder
Refrigerant charging scale
Vacuum gauge or thermis-
tor vacuum gauge and
vacuum valve
Charging cylinder
Air purge, refrigerant charge
and operation check
Gas leak check
Refrigerant recovery
Refrigerant charge
Apply to flared section
Prevent compressor malfunction
when charging refrigerant by
spraying liquid refrigerant
Prevent gas from blowing out
when detaching charge hose
Vacuum drying and air
purge
Flaring work of piping
Bend the pipes
Cut the pipes
Weld the pipes
Refrigerant charge
Check the degree of vacuum. (Vacuum
valve prevents back flow of oil and refri-
gerant to thermistor vacuum gauge)
Refrigerant charge
Tool exclusive for R410A
Tool exclusive for R410A
Tool for HFC refrigerant
Tool exclusive for R410A
Tool exclusive for R410A
Ester oil, ether oil and
alkylbenzene oil (minimum amount)
Tool exclusive for R410A
Tool exclusive for R410A
Tools for other refrigerants can
be used if equipped with adop-
ter for reverse flow check
Tools for other refrigerants
can be used by adjusting
flaring dimension
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants can be used
Tools for other refrigerants
can be used
Tool exclusive for R410A
Tools and materials Use R410A tools Can R22 tools be used?
(Usable if equipped
with adopter for rever-
se flow)
(Usable by adjusting
flaring dimension)
Can R407C tools be used?
Ester oil, ether oil:
Alkylbenzene oil: minimum amount
(Usable if equipped
with adopter for rever-
se flow)
(Usable by adjusting
flaring dimension)
: Prepare a new tool. (Use the new tool as the tool exclusive for R410A.)
: Tools for other refrigerants can be used under certain conditions.
: Tools for other refrigerants can be used.
Dimension A
Dimension B
OCH632A

5
2
2-1. UNIT CONSTRUCTION
Remote
controller
Name
Model number
Functions
M-NET remote controller
PAR-F27MEA-E,
PAR-U02MEDA
• A handy remote controller for use in
conjunction
with the Melans centralized
management system.
• Addresses must be set.
• Addresses setting is not
necessary.
MA remote controller
PAR-21MAA, PAR-31/32MAA
PAR-W21MAA(when using PWFY)
Outdoor unit
Capacity
1 to 9 unit
50 to 130% of outdoor unit capacity *2 *3
Type 15 to Type 140
1 to 10 unit
Applicable
indoor unit
Number of units
Total system wide capacity
4HP 5HP 6HP
PUMY-P112VKM3(-BS)
PUMY-P112YKM(E)3(-BS)
PUMY-P125VKM3(-BS)
PUMY-P125YKM(E)3(-BS)
1 to 12 unit
PUMY-P140VKM3(-BS)
PUMY-P140YKM(E)3(-BS)
Branching pipe
components
Branch header
(2 branches)
Branch header
(4 branches)
Branch header
(8 branches)
CMY-Y62-G-E CMY-Y64-G-E CMY-Y68-G-E
*1. PUMY is connectable to Fresh Air type indoor unit.
It is possible to connect 1 Fresh Air type indoor unit to 1 outdoor unit. (1:1 system)
Operating temperature range (outdoor temperature) for fresh air type indoor units differ from other indoor units.
Refer to "2-4-(3). Operating temperature range".
*2. When the indoor unit of Fresh Air type is connected with the outdoor unit, the maximum connectable total indoor unit capacity is 110% (100%
incaseofheatingbelow−5:.
*3. When connecting PWFY series (Note that the connection is not allowed inside EU countries.)
•Only1PWFY-P100VM-E-AUcanbeconnected.PWFY-P200VM-E-AUandPWFY-P100VM-E-BUcannotbeconnected.
•ThePWFYunitcannotbetheonlyunitconnectedtoanoutdoorunit.Selectanindoorunitsothatthetotalratedcapacityoftheindoor
units, excluding the PWFY unit, is 50 to 100% of the outdoor unit capacity.
*4.
When connecting the CONNECTION KIT (PAC-LV11M-J) and an M-series indoor unit, refer to the installation manual for the CONNECTION KIT.
*5. Authorized connectable indoor units are as follows;
PUMY-P112: PEFY-P25VMA3-E × 2 + PEFY-P32VMA3-E × 2
PUMY-P125: PEFY-P32VMA3-E × 4
PUMY-P140: PEFY-P32VMA3-E × 3 + PEFY-P40VMA3-E × 1
*6. Do not connect Lossnay remote controller(s). (PZ-61DR-E, PZ-60DR-E, PZ-52SF-E, PZ-43SMF-E)
Decorative panel
OVERVIEW OF UNITS
M series remote
controller
Model
Capacity
Cassette Ceiling Ceiling
Concealed
Wall
Mounted
Ceiling
Suspended
Floor standing Ceiling concealed Lossnay Air to Water
unit*3
CONNECTION KIT
2 by 2 4-way ow 2-way ow 1-way ow Exposed Concealed Fresh air
*1
Built-in
PAC-LV11M-J
PLFY-P PLFY-P PLFY-P
PMFY-P PEFY-P PKFY-P PCFY-P PFFY-P PFFY-P PEFY-P PDFY GUF*6PWFY-P
15
15VFM-E1 – – – 15VMS1(L)-E 15VBM-E – – – – – – –
20
20VFM-E1 20VBM-E 20VLMD-E 20VBM-E
20VMS1(L)-E
20VMA(L)-E
20VMR-E-L/R
20VBM-E –
20VLEM-E
20VKM-E2
20VLRM-E
20VLRMM-E
– 20VM-E – –
25
25VFM-E1 25VBM-E 25VLMD-E 25VBM-E
25VMS1(L)-E
25VMA(L)-E
25VMR-E-L/R
25VMA3-E
*5
25VBM-E –
25VLEM-E
25VKM-E2
25VLRM-E
25VLRMM-E
– 25VM-E – –
32
32VFM-E1 32VBM-E 32VLMD-E 32VBM-E
32VMS1(L)-E
32VMA(L)-E
32VMR-E-L/R
32VMA3-E
*5
32VHM-E –
32VLEM-E
32VKM-E2
32VLRM-E
32VLRMM-E
– 32VM-E – –
40
40VFM-E1 40VBM-E 40VLMD-E 40VBM-E
40VMS1(L)-E
40VMA(L)-E
40VMH-E
40VMA3-E
*5
40VHM-E 40VKM-E
40VLEM-E
40VKM-E2
40VLRM-E
40VLRMM-E
– 40VM-E – –
M series indoor unit *4
MSZ-GE Series
MSZ-SF Series
MSZ-EF Series
MSZ-FH Series
MFZ-KJ Series
50
50VFM-E1
50VBM-E 50VLMD-E –
50VMS1(L)-E
50VMA(L)-E
50VMH-E
50VHM-E – 50VLEM-E
50VLRM-E
50VLRMM-E
– 50VM-E 50RD(H)4 –
63 –
63VBM-E 63VLMD-E –
63VMS1(L)-E
63VMA(L)-E
63VMH-E
63VKM-E 63VKM-E 63VLEM-E
63VLRM-E
63VLRMM-E
– 63VM-E – –
71 – –
– –
71VMA(L)-E
71VMH-E
– – – – – 71VM-E – –
80 –
80VBM-E 80VLMD-E
–
80VMA(L)-E
80VMH-E
– – – –
80VMH-E-F
80VM-E –
100 –
100VBM-E 100VLMD-E –
100VMA(L)-E
100VMH-E
100VKM-E 100VKM-E – – – 100VM-E 100RD(H)4
100VM-E1-AU
100VM-E2-AU
125 –
125VBM-E 125VLMD-E –
125VMA(L)-E
125VMH-E
– 125VKM-E – – – 125VM-E –
140 – – –
–
140VMA(L)-E
140VMH-E
– – – – 140VMH-E-F – –
OCH632A