Mitsubishi PUMY-P60NKMU Operating manual

TECHNICAL & SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
CONTENTS
1. SAFETY PRECAUTION ................................... 2
2. OVERVIEW OF UNITS..................................... 5
3. SPECIFICATIONS .......................................... 10
4. DATA................................................................11
5. OUTLINES AND DIMENSIONS ..................... 17
6. WIRING DIAGRAM......................................... 18
7. NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION..... 19
8. TROUBLESHOOTING.................................... 29
9. ELECTRICAL WIRING ................................. 100
10. REFRIGERANT PIPING TASKS .................. 103
11. DISASSEMBLY PROCEDURE ..................... 109
OUTDOOR UNIT
No. OCH502
REVISED EDITION-C
HFC
utilized
R410A
November 2013
PARTS CATALOG (OCB502)
Note :
• This service manual
describes technical data
of outdoor unit. As for
indoor units, refer to its
service manual.
[Service Ref.]
PUMY-P60NKMU
PUMY-P60NKMU-BS
Outdoor unit
[Model Name]
PUMY-P60NKMU
PUMY-P60NKMU-BS
• Please void OCH502
REVISED EDITION-B.
Revision:
• Replaced troubleshooting
table with flow chart in
REVISED EDITION-C.
• Some descriptions have
been modified.
Model name
indication

2
Cautions for units utilizing refrigerant R410A
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.
1 SAFETY PRECAUTION
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33
Gravimeter
Unit
[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) 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.)
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 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 —
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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 intensity, 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 intensity as shown below. Set copper pipe correctly referring to copper pipe
flaring dimensions for R410A below. For 1/2 and 5/8 inch, 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
1.0
0.8
0.8
0.8
1.0
1.0
Nominal
dimensions(inch)
Diagram below: Piping diameter and thickness
Outside
diameter (mm)
Thickness (mm)
R410A R22
**Use 1/2H or H pipes.
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(inch)
Flare cutting dimensionsOutside
diamer (mm) Dimension A ( ) (mm)
+0
-0.4
R410A R22
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(inch)
Flare nut dimensions Outside
diameter(mm)
Dimension B(mm)
R410A R22
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 adap-
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 adapter 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 adapter 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
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55
(1) Auxiliary heating operation controls another heat source that depends on the main system's operations,
which means the interlock operation shown in "b)" will be possible.
a)
b) Different Indoor unit applications that can be applied:
(2) Outdoor unit DIPSW5-4 for auxiliary heating control:
Set DIPSW5-4 when power is turned off at unit.
OFF: Disable auxiliary Heating Function (Initial setting)
ON : Enable auxiliary Heating Function
Indoor unit must be R410A UL model for this function to operate.
2-1. Auxiliary HEATING ON/OFF CONTROL SET-UP
(3) Determine required indoor fans speed during defrost mode:
0 20k 27k 39k 62K
None Black Blue White Red
Stopped
Setting on
remote
controller
Very Low Low High
Note: The setting will be disabled "when Heater contact signal is OFF".
CN22 input resistance ()
CN22 input (cable color)
Fan speed setting
OFF
Fan airflow rate setting
During defrost operation ON Wiring
CN22
a) With no auxiliary heating output the Indoor fan normally goes off to prevent cold drafts during the defrost cycles.
b) With auxiliary heating control the auxiliary heat will be on during defrost mode, thus cold drafts will not be present.
(Ducted units only)
c) For models PEFY and PDFY (Ducted) recommended to use "Black" (20K) connector.
d) For models PLFY, PCFY, PKFY and PFFY (Ductless) recommended "None", no connector required.
e) To set the fan airflow rate to be used during defrost operation, insert the resistance that is packed within the optional
adaptor cable kit (PAC-YU24HT-F) into the CN22 sensor input.
You can choose at what speed the indoor fan operates during defrost cycles bases on chart below.
2OVERVIEW OF UNITS
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6
When the set temperature ranges overlap, the previously set pattern (1,2 or 3) has a priority.
The stage 1 has the highest priority, 2 the second and then 3.
b) Based on above chart listed the sequence of operation on "On ambient decrease"
Stage 1 :(TH7 = > 10
: ) : the outdoor unit runs in HP mode.
Stage 2 :(TH7 = 10
: to -12 : ) : the outdoor unit runs in HP mode with auxiliary heating.
Stage 3 :(TH7 = < -12
: ) : Auxiliary heating only (Outdoor unit is OFF).
c) Based on above chart listed the sequence of operation on "On ambient increase"
Stage 3 :(TH7 = < 0
: ) : Auxiliary heating only (Outdoor unit is OFF).
Stage 2 :(TH7 = > 0
: to 20 : ) : Auxiliary heating with outdoor unit in HP mode.
Stage 1 :(TH7 = > 20
: ) : Outdoor unit in HP mode only.
(4) Determine fan airflow setting during indoor thermo-OFF conditions:
a) These settings are done within Indoor DIPSW1-7 and DIPSW1-8, see chart below for options.
b) Recommended SW1-7 OFF and SW1-8 ON will determine airflow based on "Setting on the remote controller".
Fan speed
setting Fan speed setting
OFF ON
SW1-7 SW1-8
OFF OFF Very low
ON OFF Low
OFF ON Setting on
remote
controller
ON
ON
Stopped
Auxiliary heating
signal
Thermo condition
(5) Setting outdoor unit and auxiliary heat switch over temperatures.
When the DIPSW 5-4 is set to "ON", the outdoor unit and the contact output operates as shown below.
a) Outdoor default setting and operations are shown below:
Stage 1
A
mb. decreasing - Outdoor unit HP operation
Amb. increasing - Defrost : Heater contact ON signal
- Other than defrost : Contact OFF
Stage 2
- Outdoor unit HP operation
- Heater contact ON signal
Stage 3
- Outdoor unit OFF (Standby)
- Heater contact ON signal
TH7 = Outdoor temperature
a
-12
-C
[10-F]
b
0
-C
[32-F]
c
10
-C
[50-F]
d
20
-C
[68-F]
Setting on
remote
controller
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(6) Locally procured wiring
A basic connection method is shown.
(i.e. interlocked operation with the electric heater with the fan speed setting on high)
Recommended circuit
CN24
CN22
X
+
X
Remote control Board Relay circuit Adapter
Indoor unit
control board
Outdoor unit
control board
Electric Heater power source
Electric
Heater
Red 1
White 2
Dip switch
SW5-4 "ON"
Preparations in the field Maximum cable length
is 10 m (32ft)
Red 1
Red 2
YellowGreen
FS1
FS2
FS1
FS2
R
S
R
S
CN24
H2
88H
H1
88H
26H
88H
1-phase power
supply
208V, 230V/60Hz
Control board
FS1, 2 ----- Thermal fuse
H1, H2 ----- Heater
26H --------- Overheat protection
thermostat
88H --------- Electromagnetic contactor
Wiring diagram
For relay X use the specifications given below operation coil
Rated voltage : 12VDC
Power consumption :0.9W or less
*Use the diode that is recommended by the relay manufacturer at both ends of the relay coil.
The length of the electrical wiring for the PAC-YU24HT is 2 meters (6-1/2 ft)
To extend this length, use sheathed 2-core cable.
Control cable type : CVV, CVS, CPEV or equivalent.
Cable size : 0.5 mm2to 1.25 mm2(AWG22 to AWG16)
Do not extend the cable more than 10 meters (32ft).
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2-2. UNIT CONSTRUCTION
Decorative panel
Model Ceiling
Ceiling
Ceiling Concealed mounted Wall Mounted
Concealed
4-way flow
1-way flow
built-in Exposed Concealed
(Fresh Air)*
PLFY-P PMFY-P PEFY-P PDFY-P PKFY-P PCFY-P PFFY-P PEFY-P PVFY-P
Capacity
NCMU-E NBMU-E NBMU-E NMAU-E NMHU-E NMSU-E NMU-E NBMU-E NHMU-E NKMU-E NKMU-E NEMU-E NRMU-E E00A NMHU-E-F
06
08
12
15
18
24
27
30
36
48
54
72
Ceiling Cassette
Ceiling Vertical
concealed
Suspended
Floor Standing
Remote
controller
Name
Model number
Functions
M-NET remote controller
PAR-F27MEA-US
• A handy remote controller for use in conjunction
with the Melans centralized management system.
• Addresses must be set.
• Address setting is not necessary.
MA remote controller
PAR-21MAAU-J, PAR-30MAAU-J
Outdoor unit
Capacity
50% ~130% of outdoor unit capacity
Indoor unit that
can be connected
Number of units
Total system wide capacity
Type 06 ~ Type 72
1~ 12 unit
P60
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
*It is possible only by 1:1 system.
(1 indoor unit of Fresh Air type is connected with 1 outdoor unit.)
Operating temperature range (outdoor temperature) for fresh air type indoor units differ from other indoor units.
Refer to 2-2(2).
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2-3. UNIT SPECIFICATIONS
(1) Method for identifying MULTI-S model
■Indoor unit < When using Model 30 > ■Outdoor unit <When using model 60 >
(2) Operating temperature range
Notes D.B. : Dry Bulb Temperature
W.B. : Wet Bulb Temperature
*10 - 46°C DB [50 - 115°FDB] : In the case of connecting PKFY-P06/P08 type indoor unit.
P L F Y - P 30 N B M U - E PU M Y - P 60 N K M U -BS
PAC type
Frequency
conversion
controller
Refrigerant
R410A/R22
commonness
Refrigerant
R410A
NEW frequency converter
one-to-many air conditioners
(flexible design type)
Indicates equivalent
to Cooling capacity
Indicates equivalent
to Cooling capacity
Power supply
N: Single phase
208/230V 60Hz
Power supply
N: Single phase
208/230V 60Hz
L : Ceiling cassette
K : Wall-mounted type
E : Hidden skylight type
C : Ceiling suspended type
M: Ceiling cassette type
F : Floor standing type
Outdoor unit
model type
Sub-number
Unit model type
UL model
M-NET control
M-NET control
UL model
Salt proof
type
Frequency
conversion
controller
Outdoor unit
MULTI-S
Cooling
W.B. 15 - 24°C [59 - 75°F]
Heating
D.B. 15 - 27°C [59 - 81°F]
:%í&>í)@
Indoor-side intake air temperature
Outdoor-side intake air temperature '%í&>)@
(3) Guaranteed voltage
198 - 253V, 60Hz
ŶIn the case of connecting fresh air type indoor unit
air type indoor
Capacity of Fresh Cooling Heating
Indoor-side and Outdoor-side P30 D.B.21 - 43:[70 - 109°F] **
W.B.15.5 - 35:[60 - 95°F] '%í - 20:[14 - 68°F] ***
intake air temperature P54 D.B.21 - 43:[70 - 109°F] **
W.B.15.5 - 35:[60 - 95°F] '%í:[23 - 68°F] ***
** Thermo-off (FAN-mode) automatically starts if the outdoor temp. is lower than 21:D.B.[70°FD.B.].
***Thermo-off (FAN-mode) automatically starts if the outdoor temp. is higher than 20:D.B.[68°FD.B.].
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3SPECIFICATIONS
PUMY-P60NKMU(-BS)
Cooling Capacity Btu/h
*** ***
*** ***
***
60,000
Heating Capacity Btu/h
Btu/h/W
W/W
66,000
4.80
21.5
97.0
6.15
27.6
97.0
12.5
3.14
Input (Cool)kW
Input Current (Cool)
Power factor (Cool) A
%
%
Input (Heat)kW
Input Current (Heat)
Power factor (Heat) A
EER (Cool)
COP (Heat)
Connectable indoor units (Max.)12
Max. Connectable Capacity Btu/h 78,000(130%)
Power Supply Single phase , 60Hz , 208/230V
Breaker Size
Min.Circuit.Ampacity
Max. fuse size 40A 42A
25A
Sound level (Cool/Heat)dB 58 / 59
External finish Munsell 3Y 7.8/1.1
Refrigerant control Linear Expansion Valve
Compressor Hermetic
ANB66FFZMT
Model
Motor output kW 3.0
Capacity control %Cooling 38-100
Heating 29-100
Starting method Inverter
Crankcase heater W —
Heat exchanger Plate fin coil (Anti corrosion fin treatment)
Fan Fan(drive) oNo. Propeller fan o2
Fan motor output kW 0.16 + 0.16
Airflow m3/min [CFM] 140 [4,940]
Dimensions (HoWoD)W mm [in]1,050 [41-5/16]
D mm [in]330+30 [13+1-3/16)
H mm [in]1,338 [52+11/16]
Weight kg [lb]142 [313]
Refrigerant R410A
Charge kg [lb]5.1 [11.2]
Protection High pressure protection HP switch
devices Compressor protection Compressor thermo,
Over current detection
Fan motor protection Overheating/Voltage protection
Oil (Model)2.3 [73] (FV50S)
Total Piping length (Max.)m [ft]
L [oz]
150 [492]
Farthest m [ft] 80 [262]
Max Height difference m [ft] 50 [164] *
Chargeless length m [ft] 0 [0]
Piping diameter Liquid [mm[in] 9.52 [3/8]
Gas [mm[in] 19.05 [3/4]
Guaranteed operation range (cool)í:DB [23 - 115°F DB]**
(heat)í::%>í°F WB]
Item Service Ref.
***
***
***
Rating conditions
Cooling Indoor : D.B. 26.7°C / W.B. 19.4°C
[D.B. 80°F / W.B. 67°F]
Outdoor : D.B. 35°C [D.B. 95°F]
Heating Indoor : D.B. 21.1°C [D.B. 70°F]
Outdoor : D.B. 8.3°C / W.B. 6.1°C
[D.B. 47°F / W.B. 43°F]
*40m [140ft]:In the case of installing outdoor unit lower than indoor unit.
**
10 - 46°C [50 - 115°F]DB : In the case of connecting PKFY-P06/P08 type
indoor unit.
***Electrical data is for only outdoor unit.
(In case of connecting 4 indoor units of PKFY-P06NBMU×2 and PKFY-
P24NKMU×2)
Btu/h=kW × 3,412 CFM=K/min × 35.31 lbs=kg/ 0.4536
Note: Above specification data is subject to rounding variation.
OCH502C