Download Mitsubishi Electric LMAP02-E Specifications

1. ELECTRICAL WORK..........................................................................................................................................WR2SD-2
1-1. General Cautions......................................................................................................................................WR2SD-2
1-2. Power Supply for Indoor Unit and Outdoor Unit........................................................................................WR2SD-3
1-3. Power Cable Specifications......................................................................................................................WR2SD-7
1-4. Power Supply Examples...........................................................................................................................WR2SD-8
2. M-NET CONTROL............................................................................................................................................WR2SD-10
2-1. Transmission Cable Length Limitation....................................................................................................WR2SD-10
2-2. Transmission Cable Specifications......................................................................................................... WR2SD-11
2-3. System Configuration Restrictions..........................................................................................................WR2SD-12
2-4. Address Setting.......................................................................................................................................WR2SD-15
3. PIPING DESIGN...............................................................................................................................................WR2SD-25
3-1. R410A Piping Material.............................................................................................................................WR2SD-25
3-2. PQRY-P-T/Y(S)HMU’s Piping Design.....................................................................................................WR2SD-26
3-3. Refrigerant Charging Calcuation.............................................................................................................WR2SD-30
4.INSTALLATION.................................................................................................................................................WR2SD-31
4-1. PQRY-P-T/Y(S)HMU’s Installation..........................................................................................................WR2SD-31
4-2. Installation Space....................................................................................................................................WR2SD-31
4-3. Piping Direction.......................................................................................................................................WR2SD-32
5.CAUTIONS........................................................................................................................................................WR2SD-33
5-1. Refrigerant Properties.............................................................................................................................WR2SD-33
5-2. Confirm the Critical Concentration and Perform Countermeasures........................................................WR2SD-33
WR2-SERIES SYSTEM DESIGN (June 2010)
WR2SD-1
WR2-SERIES
SYSTEM DESIGN
CITY MULTI® WR2-SERIES
SYSTEM DESIGN
1. ELECTRICAL WORK
WR2-SERIES
SYSTEM DESIGN
1-1. General Cautions
Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring
regulations, and guidance of each electric power company.
Wiring for control (hereinafter referred to as transmission cable) shall be (50mm[1-5/8in] or more) apart from power source
wiring so that it is not influenced by electric noise from power source wiring. (Do not insert transmission cable and power
source wire in the same conduit.)
Be sure to provide designated grounding work to heat source unit.
Give some allowance to wiring for electrical part box of indoor and heat source unit, because the box is sometimes
removed at the time of service work.
Never connect 100V, 208~230V, 460V power source to terminal block of transmission cable. If connected,electrical parts
will be burnt out.
Use 2-core shield cable for transmission cable . If transmission cables of different systems are wired with the same
multiplecore cable, the resultant poor transmitting and receiving will cause erroneous operations.
Heat
source
unit
Indoor unit
OK
2-core shield cable
Remote
controller
BC controller
2-core shield cable
WR2SD-2
Heat
source
unit
NO
WR2-SERIES SYSTEM DESIGN (June 2010)
Multiplecore cable
BC controller
Indoor unit
Remote
controller
1. ELECTRICAL WORK
1-2. Power Supply for Indoor Unit and Outdoor Unit
Model
PLFY-P06NLMU-E
PLFY-P08NLMU-E
PLFY-P12NLMU-E
PLFY-P15NLMU-E
PLFY-P18NLMU-E
PLFY-P08NCMU-E
PLFY-P12NCMU-E
PLFY-P15NCMU-E
PLFY-P12NBMU-E
PLFY-P15NBMU-E
PLFY-P18NBMU-E
PLFY-P24NBMU-E
PLFY-P30NBMU-E
PLFY-P36NBMU-E
PMFY-P06NBMU-E
PMFY-P08NBMU-E
PMFY-P12NBMU-E
PMFY-P15NBMU-E
PEFY-P06NMAU-E
PEFY-P08NMAU-E
PEFY-P12NMAU-E
PEFY-P15NMAU-E
PEFY-P18NMAU-E
PEFY-P24NMAU-E
PEFY-P27NMAU-E
PEFY-P30NMAU-E
PEFY-P36NMAU-E
PEFY-P48NMAU-E
PEFY-P54NMAU-E
PEFY-P06NMSU-E
PEFY-P08NMSU-E
PEFY-P12NMSU-E
PEFY-P15NMSU-E
PEFY-P18NMSU-E
PEFY-P24NMSU-E
PEFY-P27NMHU-E
PEFY-P30NMHU-E
PEFY-P36NMHU-E
PEFY-P48NMHU-E
PEFY-P54NMHU-E
PEFY-P72NMHU-E
PEFY-P96NMHU-E
Hz
60Hz
60Hz
60Hz
60Hz
Symbols: MCA : Min.Circuit Amps (=1.25xFLA) FLA : Full Load Amps
IFM :Indoor Fan Motor
Output : Fan motor rated output
Indoor Unit
IFM
Volts
Voltage range
MCA(A)
FLA(A)
0.43 / 0.47
0.34 / 0.37
0.43 / 0.47
0.34 / 0.37
188 to 253V
0.43 / 0.47
0.34 / 0.37
0.48 / 0.53
0.38 / 0.42
0.49 / 0.54
0.39 / 0.43
0.29 / 0.29
0.23 / 0.23
0.35 / 0.35
0.28 / 0.28
208 / 230V
0.35 / 0.35
0.28 / 0.28
0.64 / 0.64
0.51 / 0.51
198 to 253V
0.64 / 0.64
0.51 / 0.51
0.64 / 0.64
0.51 / 0.51
0.64 / 0.64
0.51 / 0.51
0.64 / 0.64
0.51 / 0.51
1.25 / 1.25
1.00 / 1.00
208 / 230V
208 / 230V
208 / 230V
188 to 253V
0.25 / 0.25
0.25 / 0.25
0.26 / 0.26
0.33 / 0.33
0.20 / 0.20
0.20 / 0.20
0.21 / 0.21
0.26 / 0.26
198 to 253V
1.05 / 1.05
1.05 / 1.05
1.21 / 1.21
1.45 / 1.45
1.56 / 1.56
2.25 / 2.25
2.49 / 2.49
2.50 / 2.50
3.33 / 3.33
3.41 / 3.41
3.31 / 3.31
0.84 / 0.84
0.84 / 0.84
0.97 / 0.97
1.16 / 1.16
1.25 / 1.25
1.80 / 1.80
1.99 / 1.99
2.00 / 2.00
2.66 / 2.66
2.73 / 2.73
2.65 / 2.65
188 to 253V
0.47 / 0.50
0.47 / 0.50
0.68 / 0.74
1.20 / 1.33
1.20 / 1.33
1.57 / 1.73
1.72 / 1.89
2.08 / 2.29
4.23 / 4.67
4.23 / 4.67
4.29 / 4.73
5.60 / 6.18
7.12 / 7.85
0.32 / 0.31
0.41 / 0.39
0.46 / 0.43
0.47 / 0.45
0.64 / 0.60
0.88 / 0.83
1.37 / 1.51
1.66 / 1.83
3.38 / 3.73
3.38 / 3.73
3.43 / 3.78
4.48 / 4.94
5.69 / 6.28
WR2-SERIES SYSTEM DESIGN (June 2010)
WR2SD-3
WR2-SERIES
SYSTEM DESIGN
1-2-1. Electrical Characteristics of Indoor Unit
WR2-SERIES
SYSTEM DESIGN
1. ELECTRICAL WORK
Model
PCFY-P15NKMU-E
PCFY-P24NKMU-E
PCFY-P30NKMU-E
PCFY-P36NKMU-E
PKFY-P06NBMU-E
PKFY-P08NBMU-E
PKFY-P12NHMU-E
PKFY-P15NHMU-E
PKFY-P18NHMU-E
PKFY-P24NKMU-E
PKFY-P30NKMU-E
PFFY-P06NEMU-E
PFFY-P08NEMU-E
PFFY-P12NEMU-E
PFFY-P15NEMU-E
PFFY-P18NEMU-E
PFFY-P24NEMU-E
PFFY-P06NRMU-E
PFFY-P08NRMU-E
PFFY-P12NRMU-E
PFFY-P15NRMU-E
PFFY-P18NRMU-E
PFFY-P24NRMU-E
Hz
60Hz
60Hz
60Hz
60Hz
Symbols: MCA : Min.Circuit Amps (=1.25xFLA) FLA : Full Load Amps
IFM :Indoor Fan Motor
Output : Fan motor rated output
Indoor Unit
IFM
Volts
Voltage range
MCA(A)
FLA(A)
0.44 / 0.44
0.35 / 0.35
0.52 / 0.52
0.41 / 0.41
208 / 230V
188 to 253V
1.22 / 1.22
0.97 / 0.97
1.22 / 1.22
0.97 / 0.97
208 / 230V
208 / 230V
208 / 230V
198 to 253V
0.19 / 0.19
0.19 / 0.19
0.38 / 0.38
0.38 / 0.38
0.38 / 0.38
0.37 / 0.37
0.54 / 0.54
0.15 / 0.15
0.15 / 0.15
0.30 / 0.30
0.30 / 0.30
0.30 / 0.30
0.29 / 0.29
0.43 / 0.43
188 to 253V
0.32 / 0.34
0.32 / 0.34
0.34 / 0.38
0.40 / 0.44
0.48 / 0.53
0.59 / 0.64
0.25 / 0.27
0.25 / 0.27
0.27 / 0.30
0.32 / 0.35
0.38 / 0.42
0.47 / 0.51
188 to 253V
0.32 / 0.34
0.32 / 0.34
0.34 / 0.38
0.40 / 0.44
0.48 / 0.53
0.59 / 0.64
0.25 / 0.27
0.25 / 0.27
0.27 / 0.30
0.32 / 0.35
0.38 / 0.42
0.47 / 0.51
0.45 / 0.40
1.22 / 1.10
1.11 / 1.00
2.00 / 1.80
1.67 / 1.50
1.78 / 1.60
2.11 / 1.90
-
PVFY-P12E00A
PVFY-P18E00A
PVFY-P24E00A
PVFY-P30E00A
PVFY-P36E00A
PVFY-P48E00A
PVFY-P54E00A
60Hz
208 / 230V
188 to 253V
0.56 / 0.50
1.53 / 1.38
1.39 / 1.25
2.50 / 2.25
2.09 / 1.88
2.23 / 2.00
2.64 / 2.38
PWFY-P36NMU-E-BU
PWFY-P36NMU-E-AU
PWFY-P72NMU-E-AU
60Hz
208 / 230V
188 to 253V
25
0.09
0.09
WR2SD-4
WR2-SERIES SYSTEM DESIGN (June 2010)
1. ELECTRICAL WORK
1-2-2. Electrical Characteristics of Water-source Unit
PQRY-P-T(S)HMU
Model
Unit Combination
PQRY-P72THMU-A
PQRY-P96THMU-A
PQRY-P120THMU-A
PQRY-P144TSHMU-A
PQRY-P168TSHMU-A
PQRY-P192TSHMU-A
PQRY-P216TSHMU-A
PQRY-P240TSHMU-A
Hz
PQRY-P72THMU-A
PQRY-P72THMU-A
PQRY-P72THMU-A
PQRY-P96THMU-A 60Hz
PQRY-P96THMU-A
PQRY-P96THMU-A
PQRY-P96THMU-A
PQRY-P120THMU-A
PQRY-P120THMU-A
PQRY-P120THMU-A
Water-source unit
Voltage range RLA(A)
12.6/11.4
18.0/16.2
23.6/21.4
12.6/11.4
12.6/11.4
12.6/11.4
208/230V 188 to 253V
18.0/16.2
18.0/16.2
18.0/16.2
18.0/16.2
23.6/21.4
23.6/21.4
23.6/21.4
Volts
MCA(A)
16/15
23/21
30/27
16/15
16/15
16/15
23/21
23/21
23/21
23/21
30/27
30/27
30/27
Max.Fuse(A)
25/20
40/30
50/40
25/20
25/20
25/20
40/30
40/30
40/30
40/30
50/40
50/40
50/40
Compressor
SC(A)
15
15
15
15
15
15
15
15
15
15
15
15
15
Symbols: MCA : Min.Circuit Amps
SC : Starting Current RLA : Rated Load Amps
PQRY-P-Y(S)HMU
Model
PQRY-P72YHMU-A
PQRY-P96YHMU-A
PQRY-P120YHMU-A
PQRY-P144YSHMU-A
PQRY-P168YSHMU-A
PQRY-P192YSHMU-A
PQRY-P216YSHMU-A
PQRY-P240YSHMU-A
Unit Combination
Heat source unit
Hz
PQRY-P72YHMU-A
PQRY-P72YHMU-A
PQRY-P72YHMU-A
PQRY-P96YHMU-A 60Hz
PQRY-P96YHMU-A
PQRY-P96YHMU-A
PQRY-P96YHMU-A
PQRY-P120YHMU-A
PQRY-P120YHMU-A
PQRY-P120YHMU-A
Volts
460V
Compressor
Voltage range
RLA(A)
MCA(A)
Max.Fuse(A)
SC(A)
414 to 506V
5.7
8.1
10.7
5.7
5.7
5.7
8.1
8.1
8.1
8.1
10.7
10.7
10.7
8
11
14
8
8
8
11
11
11
11
14
14
14
15
15
20
15
15
15
15
15
15
15
20
20
20
7
7
7
7
7
7
7
7
7
7
7
7
7
WR2-SERIES SYSTEM DESIGN (June 2010)
WR2SD-5
WR2-SERIES
SYSTEM DESIGN
Symbols: MCA : Min.Circuit Amps
SC : Starting Current RLA : Rated Load Amps
1. ELECTRICAL WORK
1-2-3. Electrical Characteristics of BC Controller
WR2-SERIES
SYSTEM DESIGN
Symbols: MCA : Min.Circuit Amps (=1.25 x RLA)
RLA : Rated Load Amps
BC-Controller for PQRY-P-TGMU
Model
Hz
CMB-P104NU-G
CMB-P105NU-G
CMB-P106NU-G
CMB-P108NU-G
CMB-P1010NU-G
CMB-P1013NU-G
CMB-P1016NU-G
60Hz
CMB-P108NU-GA
CMB-P1010NU-GA
CMB-P1013NU-GA
CMB-P1016NU-GA
CMB-P104NU-GB
CMB-P108NU-GB
WR2SD-6
Volts
Voltage range
208 / 230V
198 to 253V
MCA(A)
0.36 / 0.34
0.45 / 0.40
0.53 / 0.48
0.68 / 0.61
0.84 / 0.75
1.08 / 0.98
1.31 / 1.19
0.68 / 0.61
0.84 / 0.75
1.08 / 0.98
1.31 / 1.19
0.33 / 0.30
0.64 / 0.59
WR2-SERIES SYSTEM DESIGN (June 2010)
MOCP
15 / 15
15 / 15
15 / 15
15 / 15
15 / 15
15 / 15
15 / 15
15 / 15
15 / 15
15 / 15
15 / 15
15 / 15
15 / 15
RLA(A)
0.29 / 0.27
0.36 / 0.32
0.42 / 0.38
0.54 / 0.49
0.67 / 0.60
0.86 / 0.78
1.05 / 0.95
0.54 / 0.49
0.67 / 0.60
0.86 / 0.78
1.05 / 0.95
0.26 / 0.24
0.51 / 0.47
1. ELECTRICAL WORK
1-3. Power Cable Specifications
Minimum wire thickness (mm2/AWG)
Main cable Branch
Ground
PQRY-P72YHMU-A
2.1/14
2.1/14
Water-source
PQRY-P96YHMU-A
2.1/14
2.1/14
unit
PQRY-P120YHMU-A
3.3/12
3.3/12
Indoor unit
0.41/22
0.41/22
0.41/22
Model
Breaker for current leakage
15A 30mA or 100mA 0.1sec. or less
15A 30mA or 100mA 0.1sec. or less
20A 30mA or 100mA 0.1sec. or less
15A 30mA or 100mA 0.1sec. or less
Switch (A)
Breaker for
Capacity Fuse wiring (NFB)
15
15
15
15
15
15
20
20
20
15
15
15
1. Use dedicated power supplies for the heat source unit and indoor unit. Ensure OC and OS are wired individually.
2. Bear in mind ambient conditions (ambient temperature,direct sunlight, rain water,etc.) when proceeding with the wiring and
connections.
3. The wire size is the minimum value for metal conduit wiring. If the voltage drops, use a wire that is one rank thicker in diameter.
Make sure the power-supply voltage does not drop more than 10%.
4. Specific wiring requirements should adhere to the wiring regulations of the region.
5. Power supply cords of parts of appliances for heat source use shall not be lighter than polychloroprene sheathed flexible cord
(design 245 IEC57). For example, use wiring such as YZW.
6. A switch with at least 3 mm [1/8 in.] contact separation in each pole shall be provided by the Air Conditioner installer.
• Be sure to use specified wires for connections and ensure no external force is imparted to terminal connections. If connections are
not fixed firmly, heating or fire may result.
• Be sure to use the appropriate type of overcurrent protection switch. Note that generated overcurrent may include some amount of
direct current.
• Some installation sites may require attachment of an earth leakage breaker for the inverter. If no earth leakage breaker is installed, there is a danger of electric shock.
• Do not use anything other than a breaker and fuse with the correct capacity. Using a fuse or wire of too large capacity may cause
malfunction or fire. WR2-SERIES SYSTEM DESIGN (June 2010)
WR2SD-7
WR2-SERIES
SYSTEM DESIGN
Thickness of wire for main power supply, capacities of the switch and system impedance
Minimum wire thickness (mm2/AWG)
Switch (A)
Breaker for
Model
Breaker for current leakage
Main cable Branch
Ground
Capacity Fuse wiring (NFB)
PQRY-P72THMU-A
3.3/12
3.3/12
20A 30mA or 100mA 0.1sec. or less
20
25
20
Water-source
PQRY-P96THMU-A
5.3/10
5.3/10
30A 30mA or 100mA 0.1sec. or less
30
40
30
unit
PQRY-P120THMU-A
8.4/8
8.4/8
40A 100mA 0.1sec. or less
40
50
40
Indoor unit
0.41/22
0.41/22
0.41/22
15A 30mA or 100mA 0.1sec. or less
15
15
15
1. ELECTRICAL WORK
WR2-SERIES
SYSTEM DESIGN
1-4. Power Supply Examples
The local standards and/or regulations is applicable at a higher priority.
1-4-1. PQRY-P72, 96, 120THMU/YHMU
Note:
1 The transmission cable is not-polarity double-wire.
2 Symbol
means a screw terminal for wiring.
3 The shield wire of transmission cable should be connected to the grounding terminal at
Heat source unit. All shield wire of M-Net transmission cable among Indoor units should be
connected to the S terminal at Indoor unit or all shield wire should be connected
together.
The broken line at the scheme means shield wire.
4 When the Heat source unit connected with system controller, power-supply to TB7 of the
heat source unit(s) is needed. The connector change from CN41 to CN40 at one of the
heat source units will enable the heat source unit to supply power to TB7, or an extra power
supplying unit PAC-SC51KUA should be used. The transmission cable (above 1.25mm2,
shielded, CVVS/CPEVS/MVVS) among Heat source units and system controllers is called
central control transmission cable. The shield wire of the central control transmission
cable must be grounded at the Heat source unit whose CN41 is changed to CN40.
5 MA R/C transmission cable (0.3-1.25mm2) must be less than 200m in length, while ME
R/C transmission cable (0.3-1.25mm2) must be less than 10m in length. But transmission
cable to the ME R/C can be extend using a M-NET cable (>=1.25mm2) when the length
is counted in the M-Net length. Both Compact MA and ME R/C transmission cables size
0.75~1.25mm2 in thickness.
6 MA remote controller and ME remote controller should not be grouped together.
7 If using 1 or 2 (main/sub) MA remote controller to control more than 1 Indoor unit, use MA
transmission cable to connect all the TB15 terminals of the Indoor units. It is called
"Grouping".
If using 1 or 2 (main/sub) ME remote controller control more than 1 indoor unit, set
address to Indoor unit and ME remote controller. For the method, refer to 2-4. "Address
Setting".
8 Indoor board consumes power from TB3. The power balance should be considered
according to System Design 2-3 "System configuration restrictions".
9 If Transmission booster is needed, be sure to connect the shield wires to the both sides
to the booster.
10 The critical current for choosing power source equipment is approximate
1.4 times of total rated current of the Heat source unit(s) or Indoor unit(s).
11 Numbers shown with ( ) indicates a diameter of the compact remote controller.
12 When System controller (SC) is connected to the system, turn the SW2-1 on.
13 The phases of electricity power must be confirmed to be right used. Phase-reverse, or
phase-missing could break the controllers.
<In the case a system controller is connected.>
Note12
Central control
transmission cable
>=1.25mm2
Shield cable
(CVVS, CPEVS
MVVS)
SC
Connector
CN41 CN40 HU
Note4
Note4
To other HU
Breakers for
current leakage Switch
Power supply
3-phase 3-wire
208-230V 60Hz(THMU)
460V 60Hz(YHMU)
Note10,13
TB1
TB3 TB7
(L1,L2,L3) (M1,M2) (M1,M2)
TB7
(S)
G
Note3
To *1 or *2
BC controller
*1
(Using MA remote controller)
Connecting TB5 terminal.
TB02
(M1,M2)
TB01
S L,N
(Shield)
G
Pull box
Breakers for
current leakage Switch
Power supply
1-phase
208-230V 60Hz
Note10
* Power supply
specifications vary with the
model of connected indoor
units or BC controller
Note7
TB5 TB2 TB15
(M1,M2) (L,N) (1,2)
S
(Shield)
IU
TB5 TB2 TB15
(M1,M2) (L,N) (1,2)
S
(Shield)
Breakers for
current leakage
Power supply
1-phase
208-230V 60Hz
TB5 TB2 TB15
(M1,M2) (L,N) (1,2)
S
(Shield)
Switch
TB1
(R,S) E
TB2 TB3
S
(Shield)
Indoor-heat source
transmission cable
>=1.25mm2
Shield cable
(Shield)
Transmission
booster
Note8
Note9
Note6
Note7
MA R/C
S
TB5 TB2 TB15
(M1,M2) (L,N) (1,2)
S
(Shield)
G
MA R/C
MA R/C cable
0.3-1.25mm2
(0.75~1.25mm2)
<=200m
Note5, Note11
MA R/C
BC controller
*2
(Using ME remote controller)
Connecting TB5 terminal.
TB02
(M1,M2)
TB01
S L,N
(Shield)
G
Pull box
Breakers for
current leakage Switch
Power supply
1-phase
208-230V 60Hz
Note10
* Power supply
specifications vary with the
model of connected indoor
units or BC controller
Note7
TB5 TB2 TB15
(M1,M2) (L,N) (1,2)
S
(Shield)
IU
TB5 TB2 TB15
(M1,M2) (L,N) (1,2)
S
(Shield)
Breakers for
current leakage
Power supply
1-phase
208-230V 60Hz
TB5 TB2 TB15
(M1,M2) (L,N) (1,2)
S
(Shield)
Switch
TB1
(R,S) E
TB2 TB3
(Shield)
Indoor-heat source
transmission cable
>=1.25mm2
Shield cable
ME R/C
Symbol
Model
BKC
OCP
Breaker capacity
Over-current protector
NFB
HU
IU
SC
Non-fuse breaker
Heat source unit
Indoor unit
System controller
MA R/C
MA remote controller
ME R/C
ME remote controller
WR2SD-8
PQRY-P72THMU
PQRY-P96THMU
PQRY-P120THMU
PQRY-P72YHMU
PQRY-P96YHMU
PQRY-P120YHMU
20 A 30 mA or 100 mA 0.1 sec. or less
30 A 30 mA or 100 mA 0.1 sec. or less
40 A 100 mA 0.1 sec. or less
15 A 30 mA or 100 mA 0.1 sec. or less
15 A 30 mA or 100 mA 0.1 sec. or less
20 A 30 mA or 100 mA 0.1 sec. or less
S
(Shield)
Transmission
booster
Note8
Note9
Note6
Note7
ME R/C
Breakers for current leakage
*1, *2
S
TB5 TB2 TB15
(M1,M2) (L,N) (1,2)
S
(Shield)
G
ME R/C cable
0.3~1.25mm2
(0.75~1.25mm2)
<=10m
Note5, Note11
ME R/C
Switch
Switch
Minimum Wire thickness
BKC
<A>
OCP*3
<A>
(NFB)
<A>
Power wire
<mm2/AWG>
20
30
40
15
15
20
20
30
40
15
15
20
20
30
40
15
15
20
3.3/12
3.3/12
5.3/10
8.4/8
2.1/14
2.1/14
3.3/12
5.3/10
8.4/8
2.1/14
2.1/14
3.3/12
*1 The breakers for current leakage should support Inverter circuit. (e.g. Mitsubishi Electric's NV-C series or equivalent).
*2 Breakers for current leakage should combine using of switch.
*3 It shows data for B-type fuse of the breaker for current leakage.
WR2-SERIES SYSTEM DESIGN (June 2010)
G wire
<mm2/AWG>
1. ELECTRICAL WORK
The local standards and/or regulations is applicable at a higher priority.
1-4-2. PQRY-P144, 168, 192, 216, 240TSHMU/YSHMU
Note12
Central control
transmission cable
>=1.25mm2
Shield cable
(CVVS, CPEVS
MVVS)
SC
Connector
CN41 CN40
Note4
Breakers for
current leakage Switch
Power supply
3-phase 3-wire
208-230V 60Hz(THMU)
460V 60Hz(YHMU)
Note10,13
Note4
HU
TB1
TB1
TB3 TB7
(L1,L2,L3) (M1,M2) (M1,M2)
G
HU
To other HU
TB7
(S)
TB3
TB7
(M1,M2) (M1,M2)
Breakers for
(L1,L2,L3)
current leakage Switch
Power supply
3-phase 4-wire
208-230V 60Hz(THMU)
460V 60Hz(YHMU)
Note10,13
TB7
(S)
G
Note3
Note3
To *1 or *2
BC controller(Main)
*1
(Using MA remote controller)
Connecting TB5 terminal.
TB02
(M1,M2)
TB01
S L,N
(Shield)
BC controller(Sub)
TB02
(M1,M2)
G
TB01
S L,N
G
Note:
1 The transmission cable is not-polarity double-wire.
2 Symbol
means a screw terminal for wiring.
3 The shield wire of transmission cable should be connected to the grounding terminal at
Heat source unit. All shield wire of M-Net transmission cable among Indoor units should be
connected to the S terminal at Indoor unit or all shield wire should be connected
together.
The broken line at the scheme means shield wire.
4 When the Heat source unit connected with system controller, power-supply to TB7 of the
heat source unit(s) is needed. The connector change from CN41 to CN40 at one of the
heat source units will enable the heat source unit to supply power to TB7, or an extra power
supplying unit PAC-SC51KUA should be used. The transmission cable (above 1.25mm2,
shielded, CVVS/CPEVS/MVVS) among Heat source units and system controllers is called
central control transmission cable. The shield wire of the central control transmission
cable must be grounded at the Heat source unit whose CN41 is changed to CN40.
5 MA R/C transmission cable (0.3-1.25mm2) must be less than 200m in length, while ME
R/C transmission cable (0.3-1.25mm2) must be less than 10m in length. But transmission
cable to the ME R/C can be extend using a M-NET cable (>=1.25mm2) when the length
is counted in the M-Net length. Both Compact MA and ME R/C transmission cables size
0.75~1.25mm2 in thickness.
6 MA remote controller and ME remote controller should not be grouped together.
7 If using 1 or 2 (main/sub) MA remote controller to control more than 1 Indoor unit, use MA
transmission cable to connect all the TB15 terminals of the Indoor units. It is called
"Grouping".
If using 1 or 2 (main/sub) ME remote controller control more than 1 indoor unit, set
address to Indoor unit and ME remote controller. For the method, refer to 2-4. "Address
Setting".
8 Indoor board consumes power from TB3. The power balance should be considered
according to System Design 2-3 "System configuration restrictions".
9 If Transmission booster is needed, be sure to connect the shield wires to the both sides
to the booster.
10 The critical current for choosing power source equipment is approximate
1.4 times of total rated current of the Heat source unit(s) or Indoor unit(s)
.
11 Numbers shown with ( ) indicates a diameter of the compact remote controller.
12 When System controller (SC) is connected to the system, turn the SW2-1 on.
13. The phases of electricity power must be confirmed to be right used. Phase-reverse, or
phase-missing could break the controllers.
Pull box
Breakers for
current leakage Switch
Power supply
1-phase
208-230V 60Hz
Note10
* Power supply
specifications vary with the
model of connected indoor
units or BC controller
Note7
TB5 TB2 TB15
(M1,M2) (L,N) (1,2)
S
(Shield)
IU
TB5 TB2 TB15
(M1,M2) (L,N) (1,2)
S
(Shield)
TB5 TB2 TB15
(M1,M2) (L,N) (1,2)
S
(Shield)
Breakers for
Power supply current leakage Switch
1-phase
208-230V 60Hz
TB1
(R,S) E
TB2 TB3
(Shield)
Indoor-heat source
transmission cable
>=1.25mm2
Shield cable
(Using ME remote controller)
Connecting TB5 terminal.
TB02
(M1,M2)
TB01
S L,N
(Shield)
MA R/C
TB02
(M1,M2)
G
TB01
S L,N
G
Pull box
Note7
TB5 TB2 TB15
(M1,M2) (L,N) (1,2)
S
(Shield)
IU
TB5 TB2 TB15
(M1,M2) (L,N) (1,2)
S
(Shield)
TB5 TB2 TB15
(M1,M2) (L,N) (1,2)
S
(Shield)
Breakers for
Power supply current leakage Switch
1-phase
208-230V 60Hz
TB1
(R,S) E
TB2 TB3
(Shield)
Indoor-heat source
transmission cable
>=1.25mm2
Shield cable
ME R/C
Model
Symbol
BKC
OCP
Breaker capacity
Over-current protector
NFB
HU
IU
SC
Non-fuse breaker
Heat source unit
Indoor unit
System controller
MA R/C
MA remote controller
ME R/C
ME remote controller
MA R/C cable
0.3-1.25mm2
(0.75~1.25mm2)
<=200m
Note5, Note11
BC controller(Sub)
Breakers for
current leakage Switch
Power supply
1-phase
208-230V 60Hz
Note10
* Power supply
specifications vary with the
model of connected indoor
units or BC controller
(Shield)
MA R/C
BC controller(Main)
*2
S
Transmission
booster
Note8
Note9
Note6
Note7
MA R/C
S
TB5 TB2 TB15
(M1,M2) (L,N) (1,2)
S
(Shield)
G
PQRY-P72THMU
PQRY-P96THMU
PQRY-P120THMU
PQRY-P72YHMU
PQRY-P96YHMU
PQRY-P120YHMU
S
S
TB5 TB2 TB15
(M1,M2) (L,N) (1,2)
S
(Shield)
G
ME R/C cable
0.3~1.25mm2
(0.75~1.25mm2)
<=10m
Note5, Note11
(Shield)
Transmission
booster
Note8
Note9
Note6
Note7
ME R/C
ME R/C
Breakers for current leakage
*1, *2
20 A 30 mA or 100 mA 0.1 sec. or less
30 A 30 mA or 100 mA 0.1 sec. or less
40 A 100 mA 0.1 sec. or less
15 A 30 mA or 100 mA 0.1 sec. or less
15 A 30 mA or 100 mA 0.1 sec. or less
20 A 30 mA or 100 mA 0.1 sec. or less
Switch
Minimum Wire thickness
Switch
BKC
<A>
OCP*3
<A>
(NFB)
<A>
Power wire
<mm2/AWG>
G wire
<mm2/AWG>
20
30
40
15
15
20
20
30
40
15
15
20
20
30
40
15
15
20
3.3/12
3.3/12
5.3/10
8.4/8
2.1/14
2.1/14
3.3/12
5.3/10
8.4/8
2.1/14
2.1/14
3.3/12
*1 The breakers for current leakage should support Inverter circuit. (e.g. Mitsubishi Electric's NV-C series or equivalent).
*2 Breakers for current leakage should combine using of switch.
*3 It shows data for B-type fuse of the breaker for current leakage.
WR2-SERIES SYSTEM DESIGN (June 2010)
WR2SD-9
WR2-SERIES
SYSTEM DESIGN
<In the case a system controller is connected.>
2. M-NET CONTROL
2-1-1. Using MA Remote controller
Long transmission cable causes voltage down, therefore, the length limitation should be obeyed to secure proper transmission.
Max. length via Heat source (M-NET cable) L1+L2+L3+L4, L1+L2+L6+L7, L3+L4+L6+L7 <=500m[1640ft.] 1.25mm2 [AWG16] or thicker
Max. length to Heat source (M-NET cable) L1+L8, L3+L4, L6, L2+L6+L8, L7
<=200m[656ft.] 1.25mm2 [AWG16] or thicker
Max. length from MA to Indoor
a1+a2, a1+a2+a3+a4
<=200m[656ft.] 0.3-1.25 mm2 [AWG22-16]
24VDC to AG-150A
n
<=50m[164ft.]
0.75-2.0 mm2 [AWG18-14]
L8
L1
Group1
OS
BC(Main)
OC
(52)
(51)
(53)
TB3
M1M2
TB3
M1M2
TB02
M1M2 S
Group3
IC
(04)
(01)
TB5
M1M2 S
Group5
BC(Sub)
IC
TB15
1 2
TB5
M1M2 S
(55)
TB15
1 2
TB02
M1M2 S
IC
IC
(05)
TB5
M1M2 S
(06)
TB15
1 2
TB15
1 2
TB5
M1M2 S
a2
TB7
M1M2 S
A B
A B
MA
MA
L2
MA
L3
OC
(54 )
IC
IC
BC(Sub)
IC
(56)
(02)
(03)
(57)
(07)
TB3
M1M2
TB5
M1M2 S
TB02
M1M2 S
TB5 TB 15
M1M2 S 1 2
TB15
1 2
TB02
M1M2 S
TB15
1 2
TB5
M1M2 S
L6
M1 M2 S
L4
BC(Main)
TB7
a4
a3
a2
A B
Shielded wire
a2
a1
a1
TB7
M1M2 S
A B S
a1
Power Supply Unit
PAC-SC51KUA
V+V-FG
L7
A B
n
AG-150A
A B S
MA
V+V-FG
OC, OS: Heat source unit controller; IC: Indoor unit controller; ME: ME remote controller
2-1-2. Using ME Remote controller
Long transmission cable causes voltage down, therefore, the length limitation should be obeyed to secure proper transmission.
Max. length via Heat source (M-NET cable) L1+L2+L3+L4, L1+L2+L6+L7,L1+L2+L3+L5, L3+L4+L6+L7 <=500m[1640ft.] 1.25mm2 [AWG16] or thicker
Max. length to Heat source (M-NET cable)
L1+L8, L3+L4, L6, L2+L6+L8, L7, L3+L5
<=200m[656ft.] 1.25mm2 [AWG16] or thicker
Max. length from ME to Indoor
e1, e2+e3, e4
<=10m[32ft.]*1
0.3-1.25 mm2 [AWG22-16] *1
24VDC to AG-150A
n
<=50m[164ft.]
0.75-2.0 mm2 [AWG18-14]
*1. If the length from ME to Indoor exceed 10m, use 1.25 mm2 [AWG16] shielded cable, but the total length should be counted into Max. length via Heat source.
.
L1
L8
Group1
Group3
Group5
OS
OC
BC(Main)
IC
IC
BC(Sub)
IC
IC
(52)
(51)
(53)
(01)
(04)
(55)
(05)
(06)
TB3
M1M2
TB3
M1M2
TB02
M1M2 S
TB7
M1M2 S
TB7
M1M2 S
TB5
M1M2 S
TB02
M1M2 S
TB5
M1M2 S
e2
TB5
M1M2 S
A B
Shielded wire
L2
ME
L3
(54 )
TB7
TB3
M1M2
IC
IC
BC(Sub)
IC
(03)
(57)
(07)
TB5
M1M2 S
TB5
M1M2 S
L6
e4
V+V-FG
A B
n
ME
V+V-FG
OC, OS: Heat source unit controller; IC: Indoor unit controller; ME: ME remote controller
WR2SD-10
ME
(02)
(103)
A B S
ME
(56)
TB02
M1M2 S
AG-150A
(155)
BC(Main)
Power Supply Uni t
PAC-SC51KUA
A B S
A B
(105)
L4
L5
M1 M2 S
WR2-SERIES SYSTEM DESIGN (June 2010)
TB02
M1M2 S
TB5
M1M2 S
e3
A B
(101)
OC
L7
WR2-SERIES
SYSTEM DESIGN
2-1. Transmission Cable Length Limitation
TB5
M1M2 S
2. M-NET CONTROL
2-2. Transmission Cable Specifications
Cable size
ME Remote controller cables
More than 1.25
Remarks
Connected with simple remote controller.
—
[AWG16]
MA Remote controller cables
Sheathed 2-core cable (unshielded)
CVV
Shielding wire (2-core)
CVVS, CPEVS or MVVS
0.3 1.25
(0.75 1.25
2
2
[AWG22 16]
[AWG18 16])
0.3 1.25
(0.75 1.25
When 10m [32ft] is exceeded, use cables with
the same specification as transmission cables.
2
2
[AWG22 16]
[AWG18 16])
Max length : 200m [656ft]
CVVS, MVVS : PVC insulated PVC jacketed shielded control cable
CPEVS : PE insulated PVC jacketed shielded communication cable
CVV
: PV insulated PVC sheathed control cable
WR2-SERIES SYSTEM DESIGN (June 2010)
WR2SD-11
WR2-SERIES
SYSTEM DESIGN
Transmission cables (Li)
Type of cable
2. M-NET CONTROL
WR2-SERIES
SYSTEM DESIGN
2-3. System Configuration Restrictions
2-3-1. Common restrictions for the CITY MULTI system
For each Heat source unit, the maximum connectable quantity of Indoor unit is specified at its Specifications table.
A) 1 Group of Indoor units can have 1-16 Indoor units;
B) Maximum 2 remote controllers for 1 Group;
C) 1 LOSSNAY unit can interlock maximum 16 Indoor units; 1 Indoor unit can interlock only 1 LOSSNAY unit.
D) Maximum 3 System controllers are connectable when connecting to TB3 of the Heat source unit.
E) Maximum 3 System controllers are connectable when connecting to TB7 of the Heat source unit, if the transmission
power is supplied by the Heat source unit.
F) 4 System controllers or more are connectable when connecting to TB7 of the Heat source unit, if the transmission
power is supplied by the power supply unit PAC-SC51KUA. Details refer to 2-3-3-C.
*System controller connected as described in D) and E) would have a risk that the failure of connected Heat source
unit would stop power supply to the System controller.
2-3-2. Ensuring proper communication power for M-NET
In order to ensure proper communication among Heat source unit, Indoor unit, LOSSNAY and Controllers, the transmission
power situation for the M-NET should be observed. In some cases, Transmission booster should be used. Taking the power
consumption index of Indoor unit sized P06-P54 as 1, the equivalent power consumption index and supply capability index
of others are listed at Table 2-3-1 and Table 2-3-2.
Table 2-3-1 The equivalent power consumption by index Indoor units, LOSSNAY, controllers
BC controller MA RC.LOSSNAY ME Remote Contr.
Indoor,OA unit
Indoor unit
Sized P06-P54
Sized P72,P96
1
7
PAR-21MAA
PAC-YT51CRB
PAR-FA32MA
LGH-RX-E
PZ-41SLB
0
CMB
2
Timers, System Contr.
PAC-SF44SRA GB-50A
PAC-YT34ST
AG-150A
PAR-F27MEA
PZ-52SF
1/4
1/2
3
TC-24
MN Converter
PACYT40ANRA
GB-24
1/2
1
4
CMS
CMS
-MNF-B -MNG-E
2
*RC : Remote Controller
Table 2-3-2 The equivalent power supply capability index of Trans.Booster, Power supply unit, Connector TB3, TB7 of Heat source unit.
Transmission Booster Power supply unit Centralized Controller Expansion controller
PAC-SF46EPA
25
GB-50ADA
6
PAC-SC51KUA
5
PAC-YG50ECA
6
Heat source unit
Heat source unit
Connector TB3 and TB7 total *
32
Connector TB7 only
6
*If PAC-SC51KUA is used to supply power at TB7 side, no power supply need from Heat source unit at TB7, Connector TB3 itself will therefore have 32.
With the equivalent power consumption values in Table 2-3-1 and Table 2-3-2, PAC-SF46EPA can be designed into the airconditioner system to ensure proper system communication according to 2-3-2-A, B, C.
2-3-2-A) Firstly, count from TB3 at TB3 side the total quantity of Indoor units and ME remote controller, Timers and System
controllers.If the total quantity reaches 40, a PAC-SF46EPA should be set.In this case, Indoor unit sized P72, 96 is
counted as 7 Indoor units, but MA remote controller(s), LOSSNAY is NOT counted.
2-3-2-B) Secondly, count from TB7 side to TB3 side the total transmission power consumption index. If the total power consumption
reaches 32, a PAC-SF46EPA should be set.Yet, if a PAC-SC51KUA is used to supply power at TB7 side, count from
index TB3 side only.
2-3-2-C) Thirdly, count from TB7 at TB7 side the total transmission power consumption index, If the total power consumption reaches
6, a PAC-SF46EPA should be set.
System example
TB7
TB3
UP
TRANSMISSION BOOSTER
MODEL
PAC-SF46EPA
POWER RATING
220-240V:0.7A ~/N
50
WEIGHT
3.4kg
MADE IN JAPAN
01
Transmission
booster
(No.1)
02
ME remote
controller
TB7
TB3
Heat source unit
ME remote
controller
N1
N2
Within N2, conditions 1,2 should be followed.
1.The total quantity of Indoor units and ME remote controller
should not exceed 40.
*Indoor unit sized P72, 96 is counted as 7 units.
2.The total equivalent transmission power consumption
should not exceed 25.
Transmission booster (No.1) should be used,
if the total quantity of Indoor units and ME remote controllers
reaches 40, (Indoor unit sized P72, 96 is counted as 7);
or if the total equivalent transmission power consumption reaches 32.
UP
TRANSMISSION BOOSTER
MODEL
PAC-SF46EPA
POWER RATING
220-240V:0.7A ~/N
50
WEIGHT
3.4kg
MADE IN JAPAN
M-NET
Power supply unit
PAC-SC51KUA
WR2SD-12
24VDC
LOSSNAY
unit
CENTRALIZED CONTROLLER AG-150A
Centralized controller
(AG-150A)
PZ-52SF
Transmission
booster
PAC-SF46EPA
(No.2)
LOSSNAY
unit
PZ-52SF
N4
N3
Transmission booster (No.2) should be used,
if the total equivalent transmission power consumption reaches 5.
Within N4, the total equivalent transmission
power consumption should not exceed 25.
WR2-SERIES SYSTEM DESIGN (June 2010)
2. M-NET CONTROL
2-3-3. Ensuring proper power supply to System controller
2-3-3-A. When connecting to TB3 of the Heat source unit and receiving power from the Heat source unit.
Maximum 3 System controllers can be connected to TB3.
Fig. 2-3-3-A
If there is more than 1 Heat source unit, it is necessary to
System controller
M-NET transmission lines
(excluding LMAP02-E)
(Indoor-Heat source transmission lines)
Heat source unit
replace power supply switch connector CN41 with CN40
Group
Group
on one Heat source unit.
TB3
TB7
Replacement of
CN41 with CN40
Indoor unit
M-NET transmission lines
(transmission lines
for central controller)
Heat source unit
MA remote controller
Group
Group
TB3
TB7
Use CN41
as it is.
Indoor unit
ME remote controller
System
controller
Maximum 3 System controllers can be connected to TB3.
2-3-3-B. When connecting to TB7 of the Heat source unit and receiving power from the Heat source unit.
Maximum 3 System controllers can be connected to TB7
and receiving power from the Heat source unit.
Fig. 2-3-3-B
M-NET transmission lines
(Indoor-Heat source transmission lines)
It is necessary to replace power supply switch connector
Heat source unit
Group
Group
CN41 with CN40 on one Heat source unit.
TB3
TB7
Replacement of
CN41 with CN40
Indoor unit
M-NET transmission lines
(transmission lines
for central controller)
Heat source unit
MA remote controller
Group
Group
TB3
TB7
Use CN41
as it is.
Indoor unit
ME remote controller
System
controller
Maximum 3 System controllers can be connected to TB7.
2-3-3-C. When connecting to TB7 of the Heat source unit but receiving power from PAC-SC51KUA.
When using PAC-SC51KUA to supply transmission
power, the power supply connector CN41 on the Heat
source units should be kept as it is. It is also a factory
setting.
1 PAC-SC51KUA supports maximum 1 AG-150A unit
due to the limited power DC 24V at its TB3.
However, 1 PAC-SC51KUA supplies transmission power
at its TB2 equal to 5 Indoor units, which is referable at
Table 2-3-2.
If PZ-52SF, Timers, System controller, ON/OFF controller
connected to TB7 consume transmission power more
than 5 (Indoor units), Transmission booster
PAC-SF46EPA is needed. PAC-SF46EPA supplies
transmission power equal to 25 Indoor units.
CAUTION
Fig. 2-3-3-D
M-NET transmission lines
(Indoor-Heat source transmission lines)
Heat source unit
Group
Group
TB3
TB7
Use CN41
as it is.
Indoor unit
M-NET transmission lines
(transmission lines
for central controller)
Heat source unit
MA remote controller
Group
Use CN41
as it is.
PAC-SC51KUA
Group
TB3
TB7
Indoor unit
ME remote controller
System
controller
AG-150A/GB-50A/GB-50ADA/GB-24A/TC-24A is recommended to connect to TB7 because these controllers perform back-up to a number of data.
In an air conditioner system has more than 1 Heat source units, AG-150A/GB-50A/GB-50ADA/GB-24A/TC-24A receiving transmission power at TB3 or TB7
on one of the Heat source units would have a risk that the connected Heat source unit failure would stop power supply to AG-150A/GB-50A/GB-50ADA/
GB-24A/TC-24A, and disrupt the whole system. When applying apportioned electric power function, AG-150A/GB-50A/GB-24A/TC-24A is necessary to
connected to TB7 and has its own power supply unit PAC-SC51KUA.* *Power supply unit PAC-SC51KUA is for AG-150A.
WR2-SERIES SYSTEM DESIGN (June 2010)
WR2SD-13
WR2-SERIES
SYSTEM DESIGN
The power to System controller (excluding LMAP03-U) is supplied via M-NET transmission line. M-NET transmission line
at TB7 side is called Central control transmission line while one at TB3 side is called Indoor-Heat source transmission
line. There are 3 ways to supply power to the System controller .
A) Connecting to TB3 of the Heat source unit and receiving power from the Heat source unit.
B) Connecting to TB7 of the Heat source unit and receiving power from the Heat source unit.
C) Connecting to TB7 of the Heat source unit but receiving power from power supply unit PAC-SC51KUA.
2. M-NET CONTROL
WR2-SERIES
SYSTEM DESIGN
2-3-4. Power supply to LM adapter LMAP03U
1-phase 208-230V AC power supply is needed.
The power supply unit is not necessary when connecting only the LMAP03U. Yet, make sure to change the power supply
changeover connector CN41 to CN40 on the LM adapter.
2-3-5. Power supply to expansion controller
1-phase 100-240VAC power supply is needed.
The power supply unit PAC-SC51KUA is not necessary.
The expansion controller supplies power through TB3, which equals 6 indoor units. (refer to Table 2-3-2)
2-3-6. Power supply to BM ADAPTER
1-phase 100-240VAC power supply is needed.
The power supply unit PAC-SC51KUA is not necessary when only BM ADAPTER is connected.
Yet, make sure to move the power jumper from CN41 to CN40 on the BM ADAPTER.
WR2SD-14
WR2-SERIES SYSTEM DESIGN (June 2010)
2. M-NET CONTROL
2-4. Address Setting
Unit address No. setting
01
9
7 8
7 8
01
2 3
9
2 3
45 6
D
BC E
F 0 12
3456
789A
À Address No. of heat source unit, indoor unit and remote controller.
The address No. is set at the address setting board.
In the case of WR2 system, it is necessary to set the same No. at the
branch No. switch of indoor unit as that of the BC controller
connected. (When connecting two or more branches, use the lowest
branch No.)
Á Caution for switch operations
Rotary switch
Branch
No. setting
45 6
In order to constitute CITY MULTI in a complete system, switch
operation for setting the unit address No. and connection No. is
required.
¥ Be sure to shut off power source before switch setting. If operated with power source on, switch can
not operate properly.
¥ No units with identical unit address shall exist in one whole air conditioner system. If set erroneously,
the system can not operate.
 MA remote controller
¥ When connecting only one remote controller to one group, it is always the main remote controller.
When connecting two remote controllers to one group, set one remote controller as the main remote controller
and the other as the sub remote controller.
¥ The factory setting is Main .
ON
Setting the dip switches
1
2
3
4
The dip switches are at the bottom of the remote controller.
Remote controller Main/Sub and other function settings are performed
using these switches.
Ordinarily, only change the Main/Sub setting of SW1. (The factory settings are all ON .)
SW No
ON
1
2
3
4
SW contents Main
ON
OFF
1
Remote controller
Main/Sub setting
Comment
Main
Sub
2
When remote controller power turned on
3
Cooling/heating display in AUTO mode
Yes
No
When you do not want to display Cooling and Heating in the
Auto mode, set to No .
4
Intake temperature
display
Yes
No
When you do not want to display the intake temperature, set to No .
Set one of the two remote controllers at one group to Main .
Normally on Timer mode on
When you want to return to the timer mode when the power is restored after
a power failure when a Program timer is connected, select Timer mode .
WR2-SERIES SYSTEM DESIGN (June 2010)
WR2SD-15
WR2-SERIES
SYSTEM DESIGN
2-4-1. Switch operation
2. M-NET CONTROL
2-4-2. Rule of setting address
7 8
4 5 6
10
1
7 8
7 8
7 8
7 8
7 8
4 5 6
4 5 6
7 8
7 8
45 6
45 6
7 8
7 8
45 6
45 6
1
7 8
9
45 6
10
The smallest address of indoor unit in the group + 100
The place of "100" is fixed to "1"
The address of main remote controller + 50
The address automatically becomes "200" if it is set
as "00"
The smallest group No. to be managed + 200
01
7 8
1
01
7 8
9
45 6
7 8
45 6
7 8
9
45 6
45 6
45 6
10
1
0
0
0
100
10
1
0
0
0
100
10
1
0
0
0
100
10
1
9 0 1
9 0 1
Settings are made on the initial screen of AG-150A.
Settings are made with setting tool of BM ADAPTER.
2 3
2 3
7 8
100
7 8
Lowest address within the indoor units connected to
the BC controller (Sub) plus 50.
45 6
7 8
Please reset one of them to an address between 51
and 99 when two addresses overlap.
The address automatically becomes "100" if it is set
as "01~ 50"
2 3
0
9 1
4 5 6
4 5 6
2
The address of heat source unit + 1
2 3
10
0
9 1
Fixed
The smallest address of indoor unit in same refrigerant
system + 50
Assign sequential address numbers to the heat source
units in one refrigerant circuit system. OC and OS are
automatically detected. (Note 2)
Please reset one of them to an address between 51
and 99 when two addresses overlap.
The address automatically becomes "100" if it is set
as "01~ 50"
1
0
9 1
100
7 8
01
7 8
01
Use the most recent address within the same group of
indoor units. Make the indoor units address connected
to the BC controller (Sub) larger than the indoor units
address connected to the BC controller (Main).
If applicable, set the sub BC controllers in an PQRY
system in the following order:
(1) Indoor unit to be connected to the BC controller (Main)
(2) Indoor unit to be connected to the BC controller (No.1 Sub)
(3) Indoor unit to be connected to the BC controller (No.2 Sub)
Set the address so that (1)<(2)<(3)
45 6
Local remote controller
4 5 6
4 5 6
01
2 3
2
000, 201 ~ 250
201 ~ 250
9
2 3
000, 201 ~ 250
01
10
9
01
1
2 3
PAC-YG50ECA
9
2 3
9
1
0
9 1
000, 201 ~ 250
01
2 3
System controller
4 5 6
4 5 6
1
Fixed
000, 201 ~ 250
2 3
201 ~ 250
000, 201 ~ 250
LMAP03U
10
Fixed
GB-50ADA,
AG-150A,
GB-50A,
GB-24A/TC-24A
BAC-HD150
9 0 1
10
2 3
ON/OFF remote
controller
9 0 1
Fixed
2 3
System remote
controller
1
2 3
Group remote
controller
10
9
1
2 3
151 ~ 199, 200
9 0 1
2 3
ME, LOSSNAY
Remote controller
(Sub)
9 0 1
2 3
101 ~ 150
2 3
52 ~ 99, 100
ME, LOSSNAY
Remote controller
(Main)
1
2 3
BC controller
(Sub)
52 ~ 99, 100
9 0 1
10
2 3
BC controller
(Main)
2 3
Heat source unit
7 8
9 0 1
51 ~ 99, 100
(Note1)
9 0 1
7 8
9 0 1
01 ~ 50
Note
2 3
WR2-SERIES
SYSTEM DESIGN
Example
2 3
Indoor unit,
Lossnay,
PAC-YG63MCA
(AI Controller),
PAC-YG66DCA
(DIDO Controller)
Address setting
4 5 6
Unit
10
1
Note1: To set the address to "100", set it to "50"
Note2: Heat source units OC and OS in one refrigerant circuit system are automatically detected.
OC and OS are ranked in descending order of capacity. If units are the same capacity, they are ranked in ascending
order of their address.
WR2SD-16
WR2-SERIES SYSTEM DESIGN (June 2010)
2. M-NET CONTROL
WR2-SERIES
SYSTEM DESIGN
2-4-3. System examples
Factory setting
Original switch setting of the heat sources, indoors, controllers and LMAP at shipment is as follows.
• Heat source unit
: Address: 00, CN41: U (Jumper), DipSW2-1: OFF
• Indoor unit
: Address: 00
• BC controller
: Address: 00
• ME remote controller : Address: 101
• LMAP
: Address: 247, CN41: U (Jumper), DipSW1-2: OFF
Setting at the site
• DipSW2-1(Heat source) : When the System Controller is used, all the Dip SW2-1 at the heat source units should be
set to "ON". * Dip SW2-1 remains OFF when only LMAP03U is used.
• DipSW1-2(LMAP)
: When the LMAP is used together with System Controller, DipSW1-2 at the LMAP
should be set to "ON".
: Change jumper from CN41 to CN 40 at heat source control board will activate central
• CN40/CN41
transmission power supply to TB7;
(Change jumper at only one heat source unit when activating the transmission power supply
without using a power supply unit.)
Change jumper from CN41 to CN 40 at LMAP will activate transmission power supply to LMAP
itself;
Power supply unit is recommended to use for a system having more than 1 heat source unit,
because the central transmission power supply from TB7 of one of heat source units is risking
that the heat source unit failure may let down the whole central control system.
2-4-3-1. MA remote controller, Single-refrigerant-system, No System Controller
<Two heat source units>
PQRY-P-TSHMU/YSHMU
OC
OS
00
CN40
CN41
00
CN40
DipSW2-1
OFF
TB3
<One heat source units>
PQRY-P-THMU/YHMU
OC
CN41
DipSW2-1
OFF
TB3
00
CN40
CN41
DipSW2-1
OFF
TB3
Group 1
BC controller
Group 3
Group 4
Indoor unit
00
TB02
Group 2
00
TB5
SRU
00
TB15
TB5
00
TB15
TB5
00
TB15
TB5
00
TB15
TB5
TB15
1*
MA R/C
MA R/C
MA R/C MA R/C
(Main)
(Sub)
1*
Wireless R/C
*1 For Wireless R/C and Signal receiver unit (SRU), channel 1, 2 and 3 are selectable and should be set to same channel.
NOTE:
1. Heat source units OC and OS in one refrigerant circuit system are automatically detected.
OC and OS are ranked in descending order of capacity. If units are the same capacity, they are ranked in ascending order
of their address.
2. No address setting is needed.
3. For a system having more than 32 indoor unit (P06-P54), confirm the need of Booster at 2-3 "System configuration
restrictions".
4. Indoor units should be set with a branch number.
5. Address setting is required if a sub BC controller is connected.
WR2-SERIES SYSTEM DESIGN (June 2010)
WR2SD-17
2. M-NET CONTROL
WR2-SERIES
SYSTEM DESIGN
2-4-3-2. MA remote controller, Single-refrigerant-system, System Controller
<Two heat source units>
PQRY-P-TSHMU/YSHMU
OC
OS
51
CN40
CN41
52
CN40
DipSW2-1
ON
TB3
<One heat source units>
PQRY-P-THMU/YHMU
OC
CN41
DipSW2-1
TB3
ON
51
CN40
CN41
DipSW2-1
ON
TB3
Group 1
BC controller
01
TB5
02
TB15
201
SC
Group 3
Group 4
Indoor unit
53
TB02
Group 2
03
TB5
SRU
TB15
TB5
04
TB15
TB5
05
TB15
TB5
TB15
1*
MA R/C
MA R/C
MA R/C MA R/C
(Main)
(Sub)
1*
Wireless R/C
*1 For Wireless R/C and Signal receiver unit (SRU), channel 1, 2 and 3 are selectable and should be set to same channel.
*SC can be connected to TB3 side or TB7 side;
Should SC connected to TB7 side, change Jumper from CN41 to CN40 at the Heat source unit module so as to supply power to the
SC.
NOTE:
1. Heat source units OC and OS in one refrigerant circuit system are automatically detected.
OC and OS are ranked in descending order of capacity. If units are the same capacity, they are ranked in ascending order
of their address.
2. Address should be set to Indoor units and central controller.
3. For a system having more than 32 indoor unit (P06-P54), confirm the need of Booster at 2-3 "System configuration
restrictions".
4. Indoor units should be set with a branch number.
WR2SD-18
WR2-SERIES SYSTEM DESIGN (June 2010)
2. M-NET CONTROL
2-4-3-3. MA remote controller, Multi-refrigerant-system, System Controller at TB7/TB3 side, Booster for long M-NET wiring
51
CN40
52
CN41
CN40
DipSW2-1
ON
TB3
PQRY-P-TSHMU/YSHMU
OC
OS
TB7
TB7
91
CN41
CN40
DipSW2-1
92
CN41
CN40
DipSW2-1
ON
ON
TB3
TB3
DipSW2-1
ON
ON
TB3
TB3
Group 21
02
TB15
TB5
03
TB15
TB5
30
TB15
TB2
TB3
TB5
TB15
Transmission Booster
PAC-SF46EPA
SRU *1
MA R/C
202
Power supply
unit (PSU)
(PAC-SC51KUA)
*2
CN41
Group 2
01
TB5
PSU
CN40
Indoor unit
53
TB02
97
CN41
DipSW2-1
Group1
BC controller
PQRY-P-THMU/YHMU
OC
TB7
WR2-SERIES
SYSTEM DESIGN
PQRY-P-TSHMU/YSHMU
OC
OS
TB7
TB7
SC*3
MA R/C MA R/C
(Main)
(Sub)
*1
Wireless R/C
000 or 201
SC
Group 31
BC controller
(Main)
Indoor unit
93
41
TB02
TB5
42
TB15
SRU *1
203
SC*3
Group 32
TB5
Group 34
Group 33
LOSSNAY
43
TB5
45
95
TB5
142
143
ME R/C
PZ-52SF
Group 35
BC controller
(Sub1)
46
TB15
MA R/C
TB5
TB15
MA R/C MA R/C
(Main)
(Sub)
*1
Wireless R/C
*1 For Wireless R/C and Signal receiver unit (SRU), channel 1, 2 and 3 are selectable and should be set to same channel.
*2 System controller should connect to TB7 at the Heat source unit and use power supply unit together in Multi-Refrigerant-System.
For AG-150A, 24VDC should be used with the PAC-SC51KUA.
*3 When multiple system controllers are connected in the system, set the controller with more functions than others as a "main"
controller and others as "sub".
Make the setting to only one of the system controllers for "prohibition of operation from local remote controller".
NOTE:
1. Heat source units OC and OS in one refrigerant circuit system are automatically detected.
OC and OS are ranked in descending order of capacity. If units are the same capacity, they are ranked in ascending order
of their address.
2. Address should be set to Indoor units, LOSSNAY and system controller.
3. M-NET power is supplied by the Heat source unit at TB3, while Indoor unit and ME remote controller consume the M-NET power
for transmission use. The power balance is needed to consider for long M-NET wiring. Details refer to 2-3 "System configuration
restrictions".
4. Indoor units should be set with a branch number.
5. Assign an address to each of the sub BC controllers which equals the sum of the smallest address of the indoor
units that are connected to each sub BC controller and 50.
WR2-SERIES SYSTEM DESIGN (June 2010)
WR2SD-19
2. M-NET CONTROL
WR2-SERIES
SYSTEM DESIGN
2-4-3-4. ME remote controller, Single-refrigerant-system, No system controller
<One heat source units>
PQRY-P-THMU/YHMU
OC
<Two heat source units>
PQRY-P-TSHMU/YSHMU
OC
OS
51
CN40
CN41
52
CN40
DipSW2-1
OFF
TB3
51
CN41
CN40
DipSW2-1
CN41
DipSW2-1
OFF
OFF
TB3
TB3
Group 1
Group 2
BC controller
Indoor unit
53
01
TB02
02
TB5
Group 3
03
TB5
Group 4
04
TB5
05
TB5
TB5
101
102
104
ME R/C
ME R/C
ME R/C
105
155
ME R/C ME R/C
NOTE:
1. Heat source units OC and OS in one refrigerant circuit system are automatically detected.
OC and OS are ranked in descending order of capacity. If units are the same capacity, they are ranked in ascending order of their
address.
2. Address should be set to Indoor units, system controller and ME remote controllers.
3. M-NET power is supplied by the Heat source unit at TB3, while Indoor unit and ME RC consume the M-NET power for transmission
use. The power balance is needed to consider for long M-NET wiring. Details refer to 2-3 "System configuration restrictions".
4. Indoor units should be set with a branch number.
2-4-3-5. ME remote controller, Single-refrigerant-system, System controller, LOSSNAY
<Two heat source units>
PQRY-P-TSHMU/YSHMU
OC
OS
51
CN40
CN41
52
CN40
DipSW2-1
ON
TB3
<One heat source units>
PQRY-P-THMU/YHMU
OC
CN41
51
CN40
DipSW2-1
CN41
DipSW2-1
ON
ON
TB3
TB3
Group 1
BC controller
Indoor unit
53
01
TB02
Group 2
02
TB5
TB5
Group 3
Group 4
LOSSNAY
03
TB5
Group 5
04
TB5
05
TB5
201
101
102
103
104
SC
ME R/C
ME R/C
PZ-52SF
ME R/C
105
155
ME R/C ME R/C
*SC can be connected to TB3 side or TB7 side;
Should SC connected to TB7 side, change Jumper from CN41 to CN40 at the Heat source unit module so as to supply power to the SC.
NOTE:
1. Heat source units OC and OS in one refrigerant circuit system are automatically detected.
OC and OS are ranked in descending order of capacity. If units are the same capacity, they are ranked in ascending order of their
address.
2. Address should be set to Indoor units, LOSSNAY central controller, ME remote controllers.
3. For a system having more than 32 indoor unit (P06-P54), confirm the need of Booster at 2-3 "System configuration
restrictions".
4. Indoor units should be set with a branch number.
WR2SD-20
WR2-SERIES SYSTEM DESIGN (June 2010)
2. M-NET CONTROL
2-4-3-6. ME remote controller, Multi-refrigerant-system, System Controller at TB 7side, LOSSNAY, Booster for long M-NET wiring
51
CN40
52
CN41
CN40
DipSW2-1
ON
TB3
PQRY-P-TSHMU/YSHMU
OC
OS
TB7
TB7
91
CN41
CN40
DipSW2-1
CN40
DipSW2-1
ON
ON
TB3
TB3
ON
TB3
TB3
Group 21
02
03
TB5
102
ME R/C
ME R/C
41
TB5
130
180
ME R/C ME R/C
Group 32
Group 33
Group 34
LOSSNAY
42
TB5
TB3
TB2
TB02
Transmission Booster
PAC-SF46EPA
Indoor unit
93
30
80
TB5
101
Group 31
BC controller
TB02
DipSW2-1
ON
BC controller
(Sub)
TB5
PSU
CN41
Group 2
01
53
000 or 201
CN40
Indoor unit
TB02
Power supply
unit (PSU)
(PAC-SC51KUA)
*1
96
CN41
DipSW2-1
Group 1
BC controller
(Main)
PQRY-P-THMU/YHMU
OC
TB7
92
CN41
WR2-SERIES
SYSTEM DESIGN
PQRY-P-TSHMU/YSHMU
OC
OS
TB7
TB7
44
43
TB5
Group 35
45
TB5
TB5
TB5
SC
141
142
143
144
ME R/C
ME R/C
PZ-52SF
ME R/C
145
195
ME R/C ME R/C
*1 System controller should connect to TB7 at the Heat source unit and use power supply unit together in Multi-Refrigerant-System.
.
For AG-150A, 24VDC should be used with the PAC-SC51KUA.
NOTE:
1. Heat source units OC and OS in one refrigerant circuit system are automatically detected.
OC and OS are ranked in descending order of capacity. If units are the same capacity, they are ranked in ascending order of their address.
2. M-NET power is supplied by the Heat source unit at TB3, while Indoor unit and ME RC consume the M-NET power for transmission
use. The power balance is needed to consider for long M-NET wiring. Details refer to 2-3 "System configuration restrictions".
3. Indoor units should be set with a branch number.
4. Assign an address to each of the sub BC controllers which equals the sum of the smallest address of the indoor units that are connected
to each sub BC controller and 50.
When the address assigned to sub BC controller overlaps those of any other units including heat source units (OC/OS) or main BC
controller, sub BC controller will be given priority to have the address.
2-4-3-7. Example : BC, BC sub
NOTE
PQRY-P-TSHMU/YSHMU
OS
OC
52
51
CN40 CN41
CN40 CN41
DipSW2-1
OFF
TB3
DipSW2-1
OFF
TB3
• Indoor units should be set with a branch number.
• BC (main) address = O/U address + 1
• BC (sub) address = Lowest address within the indoor units connected to the BC controller (sub) + 50
• If applicable, set the sub BC controllers in an PQRY system in the following order:
(1) Indoor unit to be connected to the BC controller (Main)
(2) Indoor unit to be connected to the BC controller (No.1 Sub)
(3) Indoor unit to be connected to the BC controller (No.2 Sub)
Set the address so that (1)<(2)<(3)
: Piping
: M-NET wiring
53
54
BC controllers
CMB-NU-GA(main)
TB02
01
TB5
02
TB5
03
TB5
04
TB5
Group 2
06
TB5
104
BC controllers
CMB-NU-GB(No.2 sub)
TB02
05
TB5
101
Group 1
57
BC controllers
CMB-NU-GB(No.1 sub)
TB02
07
08
TB5
TB5
106
Group 3
WR2-SERIES SYSTEM DESIGN (June 2010)
107
Group 4
WR2SD-21
WR2-SERIES
SYSTEM DESIGN
2. M-NET CONTROL
2-4-3-8. TG-2000A+AG-150A/GB-50A
AG-150A/GB-50A can control max. 50 indoor units;
TG-2000A can control max. 40 pieces of AG-150A*2 or GB-50A;
TG-2000A can control max. 2000 indoor units.
<Two heat source units>
PQRY-P-TSHMU/YSHMU
GB-50A
OC
TB7
000
PSU
CN40
(PAC-SC51KUA)
OS
TB7
51
CN41
CN40
DipSW2-1
TB3
OC
TB7
52
CN41
CN41
ON
TB3
TB3
Group 2
Group 40
Indoor unit
53
01
TB02
51
DipSW2-1
ON
Group 1
HUB
CN40
DipSW2-1
ON
BC controller
<One heat source units>
PQRY-P-THMU/YHMU
02
TB15
TB5
03
42
TB15 TB5
TB5
TB15 TB2
TB3 TB5
Transmission Booster
PAC-SF46EPA
SRU *1
MA R/C
PC with
TG-2000A
TB15
MA R/ C MA R/C
(Main)
(Sub)
*1
Wireless R/C
LAN
AG-150A
PQRY-P-TSHMU/YSHMU
000
TB7
CN40
24VDC
OC
91
CN41
CN40
DipSW2-1
PSU
(PAC-SC51KUA)
TB3
51
CN41
DipSW2-1
ON
TB3
Group 21
02
TB5
102
ME R/C
ME R/C
Group 31
41
30
TB2
42
TB5
TB3
TB5
Transmission Booster
PAC-SF46EPA
130
Interlocked
LOSSNAY
BC controller
(Sub)
94
43
TB5
Group 33
TB02
Group 34
44
TB5
45
TB5
141
142
144
ME R/C
ME R/C
ME R/C
145
WR2-SERIES SYSTEM DESIGN (June 2010)
195
ME R/C ME R/C
*1 For Wireless R/C and Signal receiver unit (SRU), channel 1, 2 and 3 are selectable and should be set to same channel.
*2 Only AG-150As that are not connected to expansion controllers.
WR2SD-22
180
ME R/C ME R/C
Group 32
Indoor unit
TB5
03
TB5
101
93
TB02
CN40
Group 2
01
TB5
BC controller
(Main)
CN41
Indoor unit
52
TB02
92
ON
Group 1
BC controller
OC
TB7
DipSW2-1
ON
TB3
PQRY-P-THMU/YHMU
OS
TB7
2. M-NET CONTROL
LMAP(01)
LMAP can transmission for max.
50 indoor units in single-refrigerant-system or multi-refrigerant-system.
identified by Neuron ID
(LONWORKS adapter)
<Two heat source units>
PQRY-P-TSHMU/YSHMU
247
CN40 CN41
OC
TB7
DipSW1-2
OFF
CN40
OS
TB7
51
CN41
CN40
DipSW2-1
OC
TB7
52
CN41
CN40
DipSW2-1
OFF
TB3
TB3
51
CN41
DipSW2-1
OFF
Group 1
BC controller
<One heat source units>
PQRY-P-THMU/YHMU
OFF
TB3
Group 2
Group 40
Indoor unit
53
01
TB02
02
TB15
TB5
03
TB15 TB5
TB5
42
TB15
AG-150A
Power supply unit
(PAC-SC51KUA)
24VDC
PSU
TB15
Transmission Booster
PAC-SF46EPA
SRU *1
000
TB3 TB5
TB2
MA R/C
MA R/C MA R/C
(Main) (Sub)
*1
Wireless R/C
LONWORKS
LMAP(02)
identified by Neuron ID
247
CN40 CN41
DipSW1-2
ON
PQRY-P-TSHMU/YSHMU
OC
OS
TB7
TB7
CN40
51
CN41
DipSW2-1
ON
TB3
BC controller
(Main)
PC
LONWORKS card
LONWORKS card
LONWORKS card
52
CN41
DipSW2-1
Group 2
01
TB5
02
TB5
102
ME R/C
ME R/C
Group 31
Indoor unit
Group 32
93
41
42
TB5
TB5
03
141
142
ME R/C
92
CN41
CN40
DipSW2-1
96
CN41
DipSW2-1
ON
ON
TB3
TB3
Group 21
30
80
TB3
TB2
TB5
Transmission Booster
PAC-SF46EPA
130
180
ME R/C ME R/C
Group 33
LOSSNAY
BC controller
(Sub)
43
94
TB5
ME R/C
CN40
PQRY-P-THMU/YHMU
OC
TB7
BC controller
(Sub)
TB02
TB5
101
CN41
ON
TB3
TB3
Group 1
91
DipSW2-1
ON
BC controller
(Main)
TB02
CN40
Indoor unit
53
TB02
CN40
PQRY-P-TSHMU/YSHMU
OC
OS
TB7
TB7
TB02
143
PZ-52SF
Group 34
Group 35
44
TB5
45
TB5
144
ME R/C
145
195
ME R/C ME R/C
For other equipments (Lighting, security, elevator etc.)
*1 For Wireless R/C and Signal receiver unit (SRU), channel 1, 2 and 3 are selectable and should be set to same channel.
WR2-SERIES SYSTEM DESIGN (June 2010)
WR2SD-23
WR2-SERIES
SYSTEM DESIGN
2-4-3-9. LMAP
LMAP can transmission for max. 50 indoor units;
If system controller (SC) is used, DipSW1-2 at LMAP and DipSW2-1 at Heat source unit should set to "ON".
Change Jumper from CN41 to CN40 to activate power supply to LMAP itself for those LMAP connected without system
controller (SC).
2-4-3-10. BM ADAPTER
BM ADAPTER can transmission for max. 50 indoor units;
Change Jumper from CN41 to CN40 to activate power supply to BM ADAPTER itself for those BM ADAPTER connected
without the power supply unit.
Heat source unit
(PQHY)
Group 1
51
CN41 CN40
TB7
BM ADAPTER
000
DipSW2-1
ON
54
DipSW2-1
ON
01
02
03
101
151
103
BC controller
55
CN41 CN40
TB7
CN41 CN40
DipSW1-2
OFF
CN41 CN40
DipSW1-2
OFF
DipSW2-1
OFF
51
204
DipSW2-1
OFF
02
03
102
Group 1
Group 2
01
02
03
101
151
103
Group 3
01
02
03
101
102
103
TB3
BC controller
52
CN41 CN40
TB7
Group 2
Group 2
Heat source unit
(PQRY)
BM ADAPTER
106
Group 1
CN41 CN40
TB7
WR2SD-24
52
51
203
105
TB3
Heat source unit
(PQHY)
BM ADAPTER
CN41 CN40
DipSW1-2
OFF
DipSW2-1
OFF
104
101
CN41 CN40
CN41 CN40
DipSW1-2
OFF
06
BC controller
BM ADAPTER
TB7
05
LOSSNAY
Heat source unit
(PQRY)
202
04
TB3
51
HUB
Group 3
01
CN41 CN40
DipSW2-1
OFF
Group 2
Group 1
51
BM ADAPTER
TB7
Group 1
TB3
Heat source unit
(PQHY)
201
Group 2
TB3
Heat source unit
(PQRY)
CN41 CN40
BAC net
WR2-SERIES
SYSTEM DESIGN
2. M-NET CONTROL
Group 1
153
Group 2
01
02
03
101
102
152
TB3
WR2-SERIES SYSTEM DESIGN (June 2010)
3. PIPING DESIGN
3-1. R410 Piping Material
The maximum operation pressure of R410A air conditioner is 4.30 MPa [623psi] . The refrigerant piping should ensure the safety
under the maximum operation pressure. MITSUBISHI ELECTRIC recommends pipe size as Ta ble 3-1, or You shall follow the local
industrial standard. Pipes of radical thickness 0.7mm or less shall not be used.
Table 3-1. Copper pipe size and radial thickness for R410A CITY MULTI.
Size (mm)
Size (inch) Radial thickness (mm) Radial thickness (mil)
[32]
ø6.35
ø1/4"
0.8
[32]
ø9.52
ø3/8"
0.8
[32]
ø12.7
ø1/2"
0.8
[40]
ø15.88
ø5/8"
1.0
[48]
ø19.05
ø3/4"
1.2
[40]
ø19.05
ø3/4"
1.0
[40]
ø22.2
ø7/8"
1.0
[40]
ø25.4
ø1"
1.0
[40]
ø28.58
ø1-1/8"
1.0
[44]
ø31.75
ø1-1/4"
1.1
[48]
ø34.93
ø1-3/8"
1.2
[56]
ø41.28
ø1-5/8"
1.4
Pipe type
Type-O
Type-O
Type-O
Type-O
Type-O
Type-1/2H or H
Type-1/2H or H
Type-1/2H or H
Type-1/2H or H
Type-1/2H or H
Type-1/2H or H
Type-1/2H or H
* For pipe sized ø19.05 (3/4") for R410A air conditioner, choice of pipe type is up to you.
* The figures in the radial thickness column are based on the Japanese standards and provided only as a reference. Use pipes that meet the
local standards.
Flare
Due to the relative higher operation pressure of R410A compared to R22, the flare connection should follow dimensions
mentioned below so as to achieve enough the air-tightness.
A
Flare pipe
Pipe size
A (For R410A)
ø6.35 [1/4"]
ø9.52 [3/8"]
ø12.70 [1/2"]
ø15.88 [5/8"]
ø19.05 [3/4"]
9.1
13.2
16.6
19.7
24.0
(mm[in.])
Flare nut
B
Pipe size
B (For R410A)
ø6.35 [1/4"]
ø9.52 [3/8"]
ø12.70 [1/2"]
ø15.88 [5/8"]
ø19.05 [3/4"]
17.0
22.0
26.0
29.0
36.0
WR2-SERIES SYSTEM DESIGN (June 2010)
(mm[in.])
WR2SD-25
WR2-SERIES
SYSTEM DESIGN
Refrigerant pipe for CITY MULTI shall be made of phosphorus deoxidized copper, and has two types.
A. Type-O : Soft copper pipe (annealed copper pipe), can be easily bent with human's hand.
B. Type-1/2H pipe : Hard copper pipe (Straight pipe), being stronger than Type-O pipe of the same radical thickness.
3. PIPING DESIGN
r
3-2-1. IF 16 ports or less are in use, I.e., if only one BC controller is in use with no sub BC controller.
Note1. PQRY systems do not require headers.
Note2. Indoor units sized P72-P96 should be connected to a BC controller using the Y-shaped
CMY-R160-J joint adapter. These indoor units cannot use the same BC controller ports
as other units. (They must use their own individual BC controller port.)
Note3. As bends cause pressure loss on transportation of refrigerant, the fewer bends in the system,
the better it is. Piping length needs to factor in the actual length and equivalent length in
which the bends are counted.
Note4. Indoor units connected to the BC controller sharing one port cannot operate separately in
heating and cooling modes simultaneously; i.e., they must function in either heating or cooling in tandem.
Note5. Indoor unit capacities are included in the model name. For example, PEFY-P24NMSU-E has a capacity
of 24,000 BTUs.
Note6. Total “downstream indoor capacity” is the total of all the indoor units connected downstream. For example,
PEFY-P24NMSU-E + PEFY-P12NMSU-E: Total Indoor Unit Capacity = P24 + P12 = P36.
HU
A
For heat source units equal to or larger than a size P120, on
the BC controller please ensure CMB-P•NU-GA is used.
BC controller
H
H'
a
b
IU
IU
(P06-P18)
IU
CMY-Y102S-G2
(Joint)
Reducer (P06~P18)
(attached with BC controller)
h1
d
h2
B
CMY-R160-J
(Joint)
IU
c
IU
(P24-P54) (P72-P96)
Max.3 sets for 1 port.
Total capacity <= P54
Fig. 3-2-1-1 Piping scheme
(m [ft.])
Table 3-2-1-1. Piping length limitation
Item
Piping in the figure
Max. length
Total piping length
Farthest IU from HU
Distance between HU and BC
Farthest IU from BC controller
Height between HU and IU (HU above IU)
A+B+a+b+c+d
A+B+d
A
B+d
H
*1
165 [541']
110 [360'] *1
40 [131'] *2
50 [164'] *4
40 [131'] *5
15 [49'] (10 [32']) *3
Height between HU and IU (HU under IU ) H'
Height between IU and BC
h1
Height between IU and IU
h2
Max. equivalent length
15 [49'] (10 [32']) *3
190 [623']
110 [360'] *1
40 [131'] *2
Table3-2-1-2. Bends equivalent length "M"
Heat source Model M (m/bends [ft./bends])
P72THMU,YHMU 0.35 [1.15']
P96THMU,YHMU 0.42 [1.38']
P120THMU,YHMU 0.47 [1.54']
-
HU : Heat source Unit ; IU : Indoor Unit ; BC : BC controller
*1. Please refer to Fig.3-2-4
*2. Farthest Indoor from BC controller "B+d" can exceed 40m(131ft.) till 60m(196ft.) if no Indoor sized P72, P96 connected. Details refer to Fig.3-2-1-2
*3. Distance of Indoor sized P72, P96 from BC must be less than 10m(32ft.), if any.
Pipe length between the main BC
controller and farthest indoor unit (m)
Fig. 3-2-1-2 Piping length and height between IU and BC controller
Pipe length between the main BC
controller and farthest indoor unit (ft)
WR2-SERIES
SYSTEM DESIGN
3-2. Piping Design
70
60
50
40
30
10
0
5
10
15
Height difference between the main BC controller
and farthest indoor unit (m)
250
200
150
50
WR2SD-26
0
5
10
15
20
25
30
35
40
(mm [in.])
Pipe(Gas)
ø15.88 [5/8"]
Table3-2-1-5. Piping "a", "b", "c", "d" size selection rule (mm [in.])
Indoor Unit size
Pipe(Liquid) Pipe(Gas)
P06 to P18
ø6.35 [1/4"]
ø12.70 [1/2"]
P24 to P54
ø9.52 [3/8"]
ø15.88 [5/8"]
P72
ø9.52 [3/8"]
ø19.05 [3/4"]
P96
ø9.52 [3/8"]
ø22.20 [7/8"]
100
0
(mm [in.])
Pipe(Low pressure)
ø19.05 [3/4"]
ø22.20 [7/8"]
ø28.58 [1-1/8"]
Table3-2-1-4. Piping "B" size seleciton rule
Total down-stream Indoor capacity Pipe(Liquid)
P54 or less
ø9.52 [3/8"]
20
0
Table3-2-1-3. Piping "A"size selection rule
Heat source Model Pipe(High pressure)
P72THMU,YHMU ø15.88 [5/8"]
P96THMU,YHMU ø19.05 [3/4"]
P120THMU,YHMU ø19.05 [3/4"]
45
Height difference between the main BC controller
and farthest indoor unit (ft)
WR2-SERIES SYSTEM DESIGN (June 2010)
3. PIPING DESIGN
3-2-2. IF more than 16 ports are in use, or if there is more than one BC controller in use for one heat source unit
HU
IU
e
A
Field supplied
BC controller (Main BC)
H
a
h1
b
IU
IU
(P06-P18)
IU
(P24-P54)
h1
BC controller (Sub BC)
h3
C
CMY-Y102S-G2
(Joint)
Reducer (P06-P18)
(attached with BC controller)
H'
D
E
BC controller (Sub BC)
h2
B
CMY-R160-J
(Joint)
(P72-P96)
c
d
IU
IU
f
Max.3 sets for 1 port.
Total capacity < = P54
h1
IU
HU : Heat source unit, IU : Indoor unit
Fig. 3-2-2-1 Piping scheme
Table 3-2-2-1. Piping length limitation
Item
Total piping length
Farthest IU from HU
Distance between HU and BC
Farthest IU from BC controller
Height between HU and IU (HU above IU )
Height between HU and IU (HU under IU )
Height between IU and BC
Height between IU and IU
Height between BC(Main or Sub) and BC(Sub)
Piping in the figure
A+B+C+D+E+a+b+c+d+e+f
A+C+E+f
A
B+d or C+D+e or C+E+f
H
H'
h1
h2
h3
Table3-2-2-2. Bent equivalent length "M"
(m [ft.])
Max. length
Max. equivalent length
*1
165 [541']
190 [623']
110 [360'] *1
110 [360'] *1
40 [131'] *2
40 [131'] *2
50 [164'] *5
40 [131'] *6
15 [49'] (10 [32']) *3
15 [49'] (10 [32']) *3
15 [49'] (10 [32']) *4
-
Heat source Model
P72THMU,YHMU
P96THMU,YHMU
P120THMU,YHMU
M (m/bends [ft./bends])
0.35 [1.15']
0.42 [1.38']
0.47 [1.54']
HU : Heat source Unit ; IU : Indoor Unit ; BC : BC controlle
r
*1. Please refer to Fig.3-2-4
*2. Farthest Indoor from BC controller "B+d or C+D+e or C+E+f " can exceed 40m(131ft.) till 60m(196ft.) if no Indoor sized P72, P96 connected.
Details refer to Fig.3-2-2-2
*3. Distance of Indoor sized P72, P96 from BC must be less than 10m(32ft.), if any.
*4. When using 2 Sub BC controllers, max. height "h3" should be considered.
Fig. 3-2-2-2 Piping length and height between IU and BC controller
Pipe length between the main BC
controller and farthest indoor unit (m)
70
60
50
40
10
0
5
10
15
Height difference between the main BC controller
and farthest indoor unit (m)
250
Pipe length between the main BC
controller and farthest indoor unit (ft)
Pipe(High pressure)
ø15.88 [5/8"]
ø19.05 [3/4"]
ø19.05 [3/4"]
Total down-stream Indoor capacity
P54 or less
20
200
(mm [in.])
Pipe(Low pressure)
ø19.05 [3/4"]
ø22.20 [7/8"]
ø28.58 [1-1/8"]
Pipe(Liquid)
ø9.52 [3/8"]
(mm [in.])
Pipe(Gas)
ø15.88 [5/8"]
Table3-2-2-5 . Piping "C", "D", "E" size selection rule
Total down-stream Indoor capacity
P72 or less
P73 to P108
P109 to P126
P127 to P144
P145 to P168
Pipe(Liquid)
ø9.52 [3/8"]
ø9.52 [3/8"]
ø12.70 [1/2"]
ø12.70 [1/2"]
ø15.88 [5/8"]
Pipe(HP Gas)
ø15.88 [5/8"]
ø19.05 [3/4"]
ø19.05 [3/4"]
ø22.20 [7/8"]
ø22.20 [7/8"]
(mm [in.])
Pipe(LP Gas)
ø19.05 [3/4"]
ø22.20 [7/8"]
ø28.58 [1-1/8"]
ø28.58 [1-1/8"]
ø28.58 [1-1/8"]
HP : High pressure, LP:Low pressure
150
Table3-2-2-6 . Piping "a", "b", "c", "d" saize selection rule (mm [in.])
100
50
0
Heat source Model
P72THMU,YHMU
P96THMU,YHMU
P120THMU,YHMU
Table3-2-2-4. Piping "B" size selection rule
30
0
Table3-2-2-3. Piping "A"size selection rule
0
5
10
15
20
25
30
35
40
45
Indoor Unit size
P06 to P18
P24 to P54
P72
P96
Pipe(Liquid)
ø6.35 [1/4"]
ø9.52 [3/8"]
ø9.52 [3/8"]
ø9.52 [3/8"]
Pipe(Gas)
ø12.70 [1/2"]
ø15.88 [5/8"]
ø19.05 [3/4"]
ø22.20 [7/8"]
Height difference between the main BC controller
and farthest indoor unit (ft)
WR2-SERIES SYSTEM DESIGN (June 2010)
WR2SD-27
WR2-SERIES
SYSTEM DESIGN
Note1. PQRY systems do not require headers.
Note2. Indoor units sized P72-P96 should be connected to a BC controller using the Y-shaped
CMY-R160-J joint adapter. These indoor units cannot use the same BC controller ports
as other units. (They must use their own individual BC controller port.)
Note3. As bends cause pressure loss on transportation of refrigerant, the fewer bends in the system,
the better it is. Piping length needs to factor in the actual length and equivalent length in which
the bends are counted.
Note4. Indoor units connected to the BC controller sharing one port cannot operate separately in heating
and cooling modes simultaneously; i.e., they must function in either heating or cooling in tandem.
Note5. For sub BC controller CMB-P-NU-GB, the total connectable indoor unit capacity can be 126,000 BTUs or less.
If two sub BC controllers are used, the total indoor unit capacity connected to BOTH sub BC controllers also cannot exceed 126,000 BTUs.
For sub BC controller CMB-P1016NU-HB the total connectable indoor unit capacity can be 126,000 BTUs or less. However, if two sub controllers are used, the total indoor unit capacity
connected to BOTH sub controllers must NOT exceed 168,000BTUs.
Note6. Indoor unit capacities are included in the model name. For example, PEFY-P24NMSU-E has a
capacity of 24,000 BTUs.
Note7. Total "downstream indoor capacity" is the total of all the indoor units connected downstream.
For example, PEFY-P24NMSU-E + PEFY-P12NMSU-E: Total Indoor Unit Capacity = P24 + P12 = P36.
3. PIPING DESIGN
WR2-SERIES
SYSTEM DESIGN
3-2-3. IF more than 16 ports are in use, or if there is more than one BC controller in use for two heat source units
Note1. PQRY systems do not require headers.
Note2. Indoor units sized P72-P96 should be connected to a BC controller using the Y-shaped
CMY-R160-J joint adapter. These indoor units cannot use the same BC controller ports
as other units. (They must use their own individual BC controller port.)
Note3. As bends cause pressure loss on transportation of refrigerant, the fewer bends in the system,
the better it is. Piping length needs to factor in the actual length and equivalent length in which
the bends are counted.
Note4. Indoor units connected to the BC controller sharing one port cannot operate separately in heating
and cooling modes simultaneously; i.e., they must function in either heating or cooling in tandem.
Main unit
Sub unit
h4
F
H
Heat source Twinning kit (High/Low press.)
CMY-Q100VBK
The Low press. kit must be placed in the heat source unit that has a larger capacity index
of the two, regardless of the relative positions of the heat source units or their addresses.
(If heat source units that have the same capacity are used in combination, the distributor
can be placed in either heat source unit.)
The High press. kit is to be installed in the field.
Field supplied
BC controller (Main BC)
H'
D
a
b
IU
IU
IU
(P06-P18) (P24-P54) (P72-P96)
h1
BC controller (Sub BC)
h3
C
CMY-Y102S-G2
(Joint)
Reducer (P06-P18)
(attached with BC controller)
h1
IU
e
G
A
H
Note5. For sub BC controller CMB-P-NU-GB, the total connectable indoor unit capacity can be 126,000 BTUs or
less. If two sub BC controllers are used, the total indoor unit capacity connected to BOTH sub BC
controllers also cannot exceed 126,000 BTUs.
For sub BC controller CMB-P1016NU-HB the total connectable indoor unit capacity can be 126,000 BTUs
or less. However, if two sub controllers are used, the total indoor unit capacity connected to BOTH sub
controllers must NOT exceed 168,000BTUs.
Note6. Indoor unit capacities are included in the model name. For example, PEFY-P24NMSU-E has a
capacity of 24,000 BTUs.
Note7. Total "downstream indoor capacity" is the total of all the indoor units connected downstream.
For example, PEFY-P24NMSU-E + PEFY-P12NMSU-E: Total Indoor Unit Capacity = P24 + P12 = P36.
E
h2
BC controller (Sub BC)
B
CMY-R160-J
(Joint)
c
d
IU
IU
f
Max.3 sets for 1 port.
Total capacity < = P54
h1
IU
IU : Indoor unit
Fig. 3-2-3-1 Piping scheme
Table3-2-3-1. Piping length limitation
Item
Total piping length
Farthest IU from HU
Distance between HU and BC
Farthest IU from BC controller
Height between HU and IU (HU above IU )
Height between HU and IU (HU under IU )
Height between IU and BC
Height between IU and IU
Height between BC(Main or Sub) and BC(Sub)
Distance between Main unit and Sub unit
Height between Main unit and Sub unit
Piping in the figure
F+G+H+A+B+C+D+E+a+b+c+d+e+f
F(G)+A+C+E+f
F(G)+A
B+d or C+D+e or C+E+f
H
H'
h1
h2
h3
F+G or H
h4
(m [ft.])
Max. length
Max. equivalent length
*1
165 [541']
190 [623']
110 [360'] *1
110 [360'] *1
40 [131'] *2
40 [131'] *2
50 [164'] *5
40 [131'] *6
15 [49'] (10 [32']) *3
15 [49'] (10 [32']) *3
15 [49'] (10 [32']) *4
5 [16']
0.1 [0.3']
-
Table3-2-3-2. Bent equivalent length "M"
Heat source Model
M (m/bends [ft./bends])
P144TSHMU,YSHMU
0.50 [1.64']
0.50 [1.64']
P168TSHMU,YSHMU
P192TSHMU,YSHMU
0.50 [1.64']
P216TSHMU,YSHMU
0.50 [1.64']
P240TSHMU,YSHMU
0.50 [1.64']
HU : Heat source Unit ; IU : Indoor Unit ; BC : BC controller
*1. Please refer to Fig.3-2-4
*2. Farthest Indoor from BC controller "B+d or C+D+e or C+E+f " can exceed 40m(131ft.) till 60m(196ft.) if no Indoor sized P72, P96 connected.
Details refer to Fig.3-2-3-2
*3. Distance of Indoor sized P72, P96 from BC must be less than 10m(32ft.), if any.
*4. When using 2 Sub BC controllers, max. height "h3" should be considered.
Fig. 3-2-3-2 Piping length and height between IU and BC controller
Table3-2-3-3. Piping "A"size selection rule
Heat source Model
Pipe(High pressure)
ø22.20 [7/8"]
P144TSHMU,YSHMU
P168TSHMU,YSHMU
ø22.20 [7/8"]
P192TSHMU,YSHMU
ø22.20 [7/8"]
P216TSHMU,YSHMU
ø28.58 [1-1/8"]
P240TSHMU,YSHMU
ø28.58 [1-1/8"]
(mm [in.])
Pipe(Low pressure)
ø28.58 [1-1/8"]
ø28.58 [1-1/8"]
ø28.58 [1-1/8"]
ø28.58 [1-1/8"]
ø28.58 [1-1/8"]
Table3-2-3-4. Piping "B" size seleciton rule
Total down-stream Indoor capacity Pipe(Liquid)
P54 or less
ø9.52 [3/8"]
(mm [in.])
Pipe(Gas)
ø15.88 [5/8"]
Table3-2-3-5. Piping "C", "D", "E" size selection rule
Total down-stream Indoor capacity Pipe(Liquid)
P72 or less
ø9.52 [3/8"]
P73 to P108
ø9.52 [3/8"]
P109 to P126
ø12.70 [1/2"]
P127 to P144
ø12.70 [1/2"]
P145 to P168
ø15.88 [5/8"]
Pipe(HP Gas)
ø15.88 [5/8"]
ø19.05 [3/4"]
ø19.05 [3/4"]
ø22.20 [7/8"]
ø22.20 [7/8"]
HP : High pressure, LP:Low pressure
Table3-2-3-6. Piping "F", "G", "H" size selection rule
(mm [in.])
Heat source Model
Pipe(High pressure) Pipe(Low pressure)
P72THMU,YHMU
ø15.88 [5/8"]
ø19.05 [3/4"]
P96THMU,YHMU
ø19.05 [3/4"]
ø22.20 [7/8"]
P120THMU,YHMU
ø19.05 [3/4"]
ø28.58 [1-1/8"]
Table3-2-3-7. Piping "a", "b", "c", "d"size selection rule
(mm [in.])
Indoor Unit size
Pipe(Liquid)
Pipe(Gas)
P06 to P18
ø6.35 [1/4"]
ø12.70 [1/2"]
P24 to P54
ø9.52 [3/8"]
ø15.88 [5/8"]
P72
ø9.52 [3/8"]
ø19.05 [3/4"]
P96
ø9.52 [3/8"]
ø22.20 [7/8"]
WR2SD-28
WR2-SERIES SYSTEM DESIGN (June 2010)
(mm [in.])
Pipe(LP Gas)
ø19.05 [3/4"]
ø22.20 [7/8"]
ø28.58 [1-1/8"]
ø28.58 [1-1/8"]
ø28.58 [1-1/8"]
3. PIPING DESIGN
3-2-4. Total piping length restrictions (m)
1000
900
900
Total extended pipe length (m)
Total extended pipe length (m)
[PQRY-P144, 168, 192, 216, 240TSHMU-A/YSHMU-A]
1000
800
700
600
500
400
300
200
10
20
30
40
50
WR2-SERIES
SYSTEM DESIGN
[PQRY-P72, 96, 120THMU-A/YHMU-A]
60
70
80
800
700
600
500
400
300
200
90 100 110
10
Distance between heat source unit and BC controller (m)
20
30
40
50
60
70
80
90 100 110
Distance between heat source unit and BC controller (m)
3-2-5. Total piping length restrictions (ft.)
[PQRY-P72, 96, 120THMU-A/YHMU-A]
[PQRY-P144, 168, 192, 216, 240TSHMU-A/YSHMU-A]
2500
Total extended pipe length (ft.)
Total extended pipe length (ft.)
2000
1500
1000
2000
1500
500
30
90
150
210
270
30
330
Distance between heat source unit and BC controller (ft.)
90
150
210
270
330
Distance between heat source unit and BC controller䋨ft.䋩
WR2-SERIES SYSTEM DESIGN (June 2010)
WR2SD-29
3. PIPING DESIGN
WR2-SERIES
SYSTEM DESIGN
3-3. Refrigerant Charging Calculation
Sample connection (with 3 BC controller and 6 indoor units)
HU
(Main unit)
HU
(Sub unit)
H
F
Heat source Twinning kit (High/Low press.)
CMY-Q100VBK:
The Low press. kit must be placed in the heat source unit that has a larger capacity index
of the two, regardless of the relative positions of the heat source units or their addresses.
(If heat source units that have the same capacity are used in combination, the distributor
can be placed in either heat source unit.)
The High press. kit is to be installed in the field.
G
e
A
Field supplied
BC controller (Main BC)
a
IU
C
c
d
IU
IU
3 : P06
4 : P08
IU
2 : P96
1 : P18
BC controller (Sub BC)
E
B
b
CMY-R160-J
(Joint)
BC controller (Sub BC)
D
CMY-Y102S-G
(Joint)
Reducer (P06-P18)
(attached with BC controller)
IU
5 : P54
f
IU
6 : P72
Amount of additional refrigerant to be charged
Refrigerant for extended pipes (field piping) is not factory-charged to the heat source unit. Add an appropriate amount of refrigerant for each pipes on site.
Record the size of each high pressure pipe and liquid pipe, and the amout of refrigerant that was charged on the heat source unit for future reference.
Calculating the amount of additional refrigerant to be charged
The amount of refrigerant to be charged is calculated with the size of the on-site-installed high pressure pipes and liquid pipes, and their length.
Calculate the amount of refrigerant to be charged according to the formula below.
Round up the calculation result to the nearest 0.1kg[4oz]. (i.e., 16.08 kg = 16.1 kg)
<Amount of additional refrigerant to be charged>
Calculating the amount of additional refrigerant to be charged
Additional refrigerant
charge
=
(kg)[oz]
+
Liquid Piping size
Total length of
ø 15.88mm[5/8 in]
(m)
(ft)
+
+
High pressure
pipe size
Total length of
ø 28.58mm[1-1/8 in]
(m) 0.36(kg/m)
(ft) 3.88(oz/ft)
Liquid Piping size
Total length of
ø 12.7mm[1/2 in]
0.2(kg/m)
2.16(oz/ft)
BC controller
(Standard / Main)
(m)
(ft)
+
High pressure
pipe size
Total length of
ø 22.2mm[7/8 in]
(m) 0.23(kg/m)
(ft) 2.48(oz/ft)
+
+
Liquid Piping size
Total length of
ø 9.52mm[3/8 in]
0.12(kg/m)
1.30(oz/ft)
(m)
(ft)
0.06(kg/m)
0.65(oz/ft)
Liquid Piping size
Total length of
ø 6.35mm[1/4 in]
(m)
(ft)
0.024(kg/m)
0.26(oz/ft)
Charged amount
1
1.0 kg[36oz]
Models
~ 27
2.0 kg [71 oz]
2
2.0 kg[71oz]
Models
28 ~ 54
2.5 kg [89 oz]
Models
55 ~ 126
3.0 kg [106 oz]
Models 127 ~ 144
3.5 kg [124 oz]
Models 145 ~ 180
4.5 kg [159 oz]
Models 181 ~ 234
5.0 kg [177 oz]
Models 235 ~ 273
6.0 kg [212 oz]
Models 274 ~ 307
8.0 kg [283 oz]
+
Amount of factory charged refrigerant
Total Capacity of
Connected Indoor Units
Charged amount
Models 308 ~ 342
9.0 kg [318 oz]
Models 343 ~ 411
10.0 kg [353 oz]
Models 412 ~
12.0 kg [424 oz]
Sample calculation
Indoor
A:
ø28.58 [1-1/8"]
40m [131ft.]
1 : P18
a:
ø6.35 [1/4"]
5m [16ft.]
B:
ø9.52 [3/8"]
10m [32ft.]
2 : P96
b:
ø9.52 [3/8"]
3m [10ft.]
C:
3 : P06
c:
ø6.35 [1/4"]
2m [6ft.]
10m [32ft.]
ø12.70 [1/2"]
4 : P08
d:
ø6.35 [1/4"]
3m [10ft.]
D:
ø9.52 [3/8"]
5m [16ft.]
5 : P54
e:
ø9.52 [3/8"]
3m [10ft.]
E:
ø9.52 [3/8"]
5m [16ft.]
10m [32ft.]
6 : P72
f :
ø9.52 [3/8"]
2m [6ft.]
F:
ø22.20 [7/8"]
1m [4ft.]
G:
ø22.20 [7/8"]
Total length for each pipe size :
ø28.58
A = 40m [131ft.]
ø22.20
F+G = 2+1 = 3m [10ft.]
ø12.70
C = 10m [32ft.]
ø9.52
B+D+E+b+e+f = 36m [116ft.]
ø6.35
a+c+d =10m [32ft.]
Therefore, additional refrigerant charge
= 40 0.36 + 3 0.23 + 10 0.12 + 36 0.06 + 10 0.024 + 9.0 + 2.0 + 6.0
(kg) = 37.69kg
= 37.7kg
or
Therefore, additional refrigerant charge
= 131 3.58+10 2.48+32 1.30+116 0.65+32 0.26+318+71+212
(oz) = 1220.1oz
= 1220oz
Charged amount
P72
P96
+
+
High pressure
pipe size
Total length of
ø 15.88mm[5/8 in]
(m) 0.11(kg/m)
(ft) 1.19(oz/ft)
BC controller
(Sub) Total Units
3.0 kg[106oz]
Heat source unit
Model
+
High pressure
pipe size
Total length of
ø 19.05mm[3/4 in]
(m) 0.16(kg/m)
(ft) 1.73(oz/ft)
5.0 kg
P120
Limitation of the amount of refrigerant to be charged
The above calculation result of the amount of refrigerant to be charged must become below the value in the table below.
Heat source unit model
P72
P96
P120
P144
P168
P192
P216
Maximum amount of refrigerant *1 kg
26.3
32.8
33.8
45.5
47.0
58.2
67.2
70.9
(oz)
928
1157
1192
1605
1658
2053
2370
2501
*1 Amount of additional refrigerant to be charged on site.
WR2SD-30
WR2-SERIES SYSTEM DESIGN (June 2010)
P240
4. INSTALLATION
4-1. PQRY-P-T(S)HMU/Y(S)HMU’s Installation
Install indoors; avoid exposing the unit to outside elements.
Do not install in an area where it could be subjected to direct heat.
Avoid installing the unit in a location where the operating sound could be an annoyance.
Install on a stable, load-bearing surface.
Ensure there is adequate drain flow from the unit when in heating mode;
See space requirements for installation and maintenance;
Do not install the unit in an environment that may have combustible gas, oil, steam, chemical gas like acidic solutions, sulfur gas, etc.
Make sure the declining gradient of the exhaust pipe is higher than 1/100.
4-2. Installation Space
In case of a single unit installation, 23-11/16 in. (600mm) or more of clearance space in the front of the unit makes for easier access
when servicing the unit.
600 (23-11/16)
450 (17-3/4)
Service space
(front side)
550 (21-11/16)
(530) (20-7/8)
600 (23-11/16)
170
Service space
(front side)
(6-3/4)
450 (17-3/4)
Top view
1100 (43-5/16)
170 (6-3/4)
350
(53)
(2-1/8)
(13-13/16)
725 (28-9/16)
(102)
(4-1/16)
880
The space for control box
replacement
mm (in.)
(34-11/16)
WR2-SERIES SYSTEM DESIGN (June 2010)
WR2SD-31
WR2-SERIES
SYSTEM DESIGN
1.
2.
3.
4.
5.
6.
7.
8.
4. INSTALLATION
WR2-SERIES
SYSTEM DESIGN
4-3. Piping Direction
<Model : PQHY, PQRY-P-THMU-A/YHMU-A>
1. Insulation installation
With City Multi WY/ WR2 Series piping, as long as the temperature range
of the circulating water is kept to average temperatures year-round
(29.4°C[85°F] in the summer, 21.1°C[70°F] in the winter), there is no
need to insulate or otherwise protect indoor piping from exposure. You
should use insulation in the following situations:
• Any heat source piping.
• Indoor piping in cold-weather regions where frozen pipes are a problem.
• When air coming from the outside causes condensation to form on
piping.
• Any drainage piping.
F
C
A
B
E
G
H
D
F
C
A
B
E
J
H
I
Main circulating water pipe
Y-type strainer
Shutoff valve
Water inlet (upper)
Shutoff valve
Drain pipe
Water outlet (lower)
Water outlet flange (lower)
Refrigerant pipes
Water intlet flange (upper)
2. Water processing and water quality control
To preserve water quality, use the closed type of cooling tower for WY/
WR2. When the circulating water quality is poor, the water heat
exchanger can develop scales, leading to a reduction in heat-exchange
power and possible corrosion of the heat exchanger. Please pay careful
attention to water processing and water quality control when installing the
water circulation system.
• Removal of foreign objects or impurities within the pipes.
During installation, be careful that foreign objects, such as welding
fragments, sealant particles, or rust, do not enter the pipes.
• Water Quality Processing
Depending on the quality of the cold-temperature water used in the
air conditioner, the copper piping of the heat exchanger may become
corroded. We recommend regular water quality processing.
Cold water circulation systems using open heat storage tanks are
particularly prone to corrosion.
When using an open-type heat storage tank, install a water-to-water
heat exchanger, and use a closed-loop circuit on the air conditioner
side. If a water supply tank is installed, keep contact with air to a
minimum, and keep the level of dissolved oxygen in the water no
higher than 1mg/ .
Water quality standard
Items
pH (25°C)[77°F]
Electric conductivity (mS/m) (25°C)[77°F]
(µS/cm) (25°C)[77°F]
Standard
items
Reference
items
Chloride ion
(mg Cl-/
Sulfate ion
(mg SO4 2-/
Acid consumption (pH4.8)
(mg CaCO3/
Total hardness
(mg CaCO3/
Calcium hardness (mg CaCO3/
Ionic silica
(mg SiO2/
Iron
(mg Fe/
Copper
(mg Cu/
Sulfide ion
)
)
)
)
)
)
)
)
(mg S2-/ )
+
Ammonium ion
(mg NH4 / )
Residual chlorine
(mg Cl/ )
Free carbon dioxide (mg CO2/ )
Ryzner stability index
Lower mid-range
Tendency
temperature water system
Recirculating
Scalewater
Make-up
[20<T<60°C] water Corrosive forming
[68<T<140°F]
7.0 ~ 8.0
7.0 ~ 8.0
30 or less 30 or less
[300 or less] [300 or less]
50 or less 50 or less
50 or less 50 or less
50 or less
50 or less
70 or less
50 or less
30 or less
1.0 or less
1.0 or less
not to be
detected
0.3 or less
0.25 or less
0.4 or less
–
70 or less
50 or less
30 or less
0.3 or less
0.1 or less
not to be
detected
0.1 or less
0.3 or less
4.0 or less
–
Reference : Guideline of Water Quality for Refrigeration and Air Conditioning
Equipment. (JRA GL02E-1994)
Please consult with a water quality control specialist about water
quality control methods and water quality calculations before using
anti-corrosive solutions for water quality management.
When replacing a previously installed air conditioning device (even
when only the heat exchanger is being replaced), first conduct a
water quality analysis and check for possible corrosion.
Corrosion can occur in cold-water systems even if there has been no
prior signs of corrosion. If the water quality level has dropped, please
adjust water quality sufficiently before replacing the unit.
WR2SD-32
WR2-SERIES SYSTEM DESIGN (June 2010)
5. CAUTIONS
The installer and/or air conditioning system specialist shall secure safety against refrigerant leakage according to local regulations or standards.
The following standard may be applicable if no local regulation or standard is available.
R410A refrigerant is harmless and incombustible. The R410A is heavier than the indoor air in density. Leakage of the refrigerant in a room
has possibility to lead to a hypoxia situation. Therefore, the Critial concentration specified below shall not be exceeded even if the leakage
happens.
Critical concentration
Critical concentration hereby is the refrigerant concentration in which no human body would be hurt if immediate measures can be taken
when refrigerant leakage happens.
Critical concentration of R410A: 0.30kg/m3
(The weight of refrigeration gas per 1 m3 air conditioning space.);
The Critical concentration is subject to ISO5149, EN378-1.
For the CITY MULTI system, the concentration of refrigerant leaked should not have a chance to exceed the Critical concentration in
any situntion.
5-2. Confirm the Critical Concentration and Perform Countermeasures
The maximum refrigerant leakage concentration (Rmax) is defined as the result of the possible maximum refrigerant weight (Wmax)
leaked into a room divided by its room capacity (V). It is referable to Fig. 5-1. The refrigerant of Heat source unit here includes its original
charge and additional charge at the site.
The additional charge is calculated according to the refrigerant charging calculation of each kind of Heat source unit, and shall not be over charged
at the site. Procedure 5-2-1~3 tells how to confirm maximum refrigerant leakage concentration (Rmax) and how to take countermeasures
against a possible leakage.
Heat source unit (No.1)
Heat source unit (No.1)
Heat source unit (No.2)
Flow of refrigerant
Flow of refrigerant
Indoor unit
Flow of refrigerant
Indoor unit
Maximum refrigerant leakage concentration (Rmax)
Rmax=Wmax / V (kg/m3)
Maximum refrigerant leakage concentration (Rmax)
Rmax=Wmax / V (kg/m 3) W1: Refrigerant weight of Heat source unit No.1
where, Wmax=W1+W 2 W2: Refrigerant weight of Heat source unit No.2
Fig. 5-1 The maximum refrigerant leakage concentration
5-2-1.Find the room capacity (V),
If a room having total opening area more than 0.15% of the floor area at a low position with another room/space, the two rooms/space are
considered as one. The total space shall be added up.
5-2-2.Find the possible maximum leakage (Wmax) in the room. If a room has Indoor unit(s) from more than 1 Heat source unit, add up the
refrigerant of the Heat source units.
5-2-3.Divide (Wmax) by (V) to get the maximum refrigerant leakage concentration (Rmax).
5-2-4.Find if there is any room in which the maximum refrigerant leakage concentration (Rmax) is over 0.30kg/m3.
If no, then the CITY MULTI is safe against refrigerant leakage.
If yes, following countermeasure is recommended to do at site.
Countermeasure 1: Let-out (making V bigger)
Design an opening of more than 0.15% of the floor area at a low position of the wall to let out the refrigerant whenever leaked.
e.g. make the upper and lower seams of door big enough.
Countermeasure 2: Smaller total charge (making Wmax smaller)
e.g. Avoid connecting more than 1 Heat source unit to one room.
e.g. Using smaller model size but more Heat source units.
e.g. Shorten the refrigerant piping as much as possible.
Countermeasure 3: Fresh air in from the ceiling (Ventilation)
As the density of the refr igerant is bigger than that of the air . Fresh air supply from the ceiling is better than air exhausting from the ceiling.
Fresh air supply solution refers to Fig. 5-2~4.
Fresh air supply fan (always ON)
Refrigerant pipe
Indoor space
Opening
(Floor)
Indoor unit
Opening
Sensor for refrigerant leakage (Oxygen sensor or refrigerant sensor).
[At 0.3m height from the floor]
Fig.5-2. Fresh air supply always ON
to Heat source unit
to Heat source unit
Indoor unit
(Floor)
Refrigerant stop valve
Refrigerant pipe
to Heat source unit
Indoor space
Refrigerant pipe (high pressure pipe)
Fresh air supply fan
Fresh air supply fan
Fig.5-3. Fresh air supply upon sensor action
Indoor space
(Floor)
Indoor unit
Opening
Sensor for refrigerant leakage (Oxygen sensor or refrigerant sensor).
[At 0.3m height from the floor]
Fig.5-4. Fresh air supply and refrigerant
shut-off upon sensor action
Note 1. Countermeasure 3 should be done in a proper way in which the fresh air supply shall be on whenever the leakage happens.
Note 2. In principle, MITSUBISHI ELECTRIC requires proper piping design, installation and air-tight testing after installation to avoid leakage happening.
In the area should earthquake happen, anti-vibration measures should be fully considered.
The piping should consider the extension due to the temperature variation.
WR2-SERIES SYSTEM DESIGN (June 2010)
WR2SD-33
WR2-SERIES
SYSTEM DESIGN
5-1. Refrigerant Properties
WR2-SERIES
SYSTEM DESIGN
WR2SD-34
WR2-SERIES SYSTEM DESIGN (June 2010)