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Model
Unit combination
PURY-P72THMU(-BS)
Outdoor unit
[PURY-P•
PURY-P96THMU(-BS)
THMU-A]
PURY-P120THMU(-BS)
PURY-P72YHMU(-BS)
Outdoor unit
[PURY-P•
PURY-P96YHMU(-BS)
YHMU-A]
PURY-P120YHMU(-BS)
1. Use dedicated power supplies for the outdoor unit and indoor unit. Ensure OC and OS are wired individually.
2. Consider the 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 local wiring regulations of the region.
5. Power supply cords of parts of appliances for outdoor use shall not 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 installation.
Warning:
•
Be sure to use specified wires for connections and ensure no external force is imparted to terminal connections. If connections are not fixed firmly, over
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.
Caution:
•
Some installation sites may require attachment of a ground breaker for the inverter. If a ground breaker is not 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.
[Fig. 9.1.2] (P.5)
A Switch (Breakers for wiring and current leakage)
B Breakers for current leak
C Outdoor unit
[Fig. 9.1.3] (P.5)
A Switch (Breakers for wiring and current leakage)
B Breakers for current leak
C Outdoor unit
E Indoor unit
Caution:
Do not use anything other than the correct capacity breaker and fuse. Using
fuse, wire or copper wire with too large capacity may cause a risk of mal-
function or fire.
9.2. Connecting remote controller, indoor
and outdoor transmission cables
•
Connect indoor unit TB5 and outdoor unit TB3. (Non-polarized 2-wire)
The "S" on indoor unit TB5 is a shielding wire connection. For specifications
about the connecting cables, refer to the outdoor unit installation manual.
•
Install a remote controller following the manual supplied with the remote con-
troller.
•
Connect the "1" and "2" on indoor unit TB15 to a MA remote controller. (Non-
polarized 2-wire)
•
Connect the "M1" and "M2" on indoor unit TB5 to a M-NET remote controller.
(Non-polarized 2-wire)
•
Connect the remote controller's transmission cable within 10 m [32 ft] using a
2
0.75 mm
[AWG18] core cable. If the distance is more than 10 m [32 ft], use a
1.25 mm
2
[AWG16] junction cable.
[Fig. 9.2.1] (P.5) MA Remote controller
[Fig. 9.2.2] (P.5) M-NET Remote controller
A Terminal block for indoor transmission cable
B Terminal block for outdoor transmission cable
C Remote controller
•
DC 9 to 13 V between 1 and 2 (MA remote controller)
•
DC 24 to 30 V between M1 and M2 (M-NET remote controller)
[Fig. 9.2.3] (P.5) MA Remote controller
[Fig. 9.2.4] (P.5) M-NET Remote controller
A Non-polarized
C Remote Controller
•
The MA remote controller and the M-NET remote controller cannot be used at
the same time or interchangeably.
Caution:
Install wiring so that it is not tight. Wiring under tension may break, or over-
heat and burn.
All manuals and user guides at all-guides.com
Minimum wire thickness (mm
2
Main cable
Branch
Ground
-
5.3 [10]
-
5.3 [10]
-
13.3 [6]
-
13.3 [6]
-
21.2 [4]
-
21.2 [4]
-
2.1 [14]
-
2.1 [14]
-
3.3 [12]
-
3.3 [12]
-
5.3 [10]
-
5.3 [10]
D Indoor unit
D Pull box
F BC controller
B TB15
D TB5
[AWG])
Swtich (A)
Breaker for
wiring (NFB)(A)
Capacity
Fuse
30
30
30
40
40
40
50
50
50
15
15
15
20
20
20
25
25
25
9.3. Connecting electrical connections
Verify the model name of the operation manual attached on the terminal bed box
cover with that shown on the rating name plate.
1. Remove the screw (2pcs) holding the cover to remove the cover.
[Fig. 9.3.1] (P.6)
A Screw holding cover (2pcs)
2. Open knockout holes
(Use a screwdriver or similar tool for this.)
[Fig. 9.3.2] (P.6)
A Terminal block box
C Remove
3. Attach power source wiring to terminal block box by using buffer bushing for
tensile force. (Conduit or similar.) Connect transmission wiring to transmission
terminal block through the knockout hole of terminal block box using ordinary
bushing.
[Fig. 9.3.3] (P.6)
A Use conduit to keep the weight of the cable and external force from being applied
to the power supply terminal connector.
B Power source wiring
D Terminal block box
E Knockout hole (for power source wiring)
F Washer (accessory)
H Use ordinary bushing
4. Connect the power source, Ground, transmission and remote controller wiring.
The dismounting of the terminal block box is not needed.
[Fig. 9.3.4] (P.6)
A Power source terminal block
B Transmission terminal block to outdoor unit
C Transmission terminal block to remote controller
[Shield wire connection]
[Fig. 9.3.5] (P.6)
A Terminal block
C Shield wire
D The ground wire from two cables are connected together to the S terminal. (Dead-
end connection)
E Insulation tape (To keep the ground wire of the shielded cable from coming in
contact with the transmission terminal)
5. After wiring is complete, make sure again that there is no slack on the connec-
tions, and attach the cover onto the terminal block box in the reverse order of
removal.
Notes:
•
Do not pinch the cables or wires when attaching the terminal bed box
cover. Doing so may cause a risk of disconnection.
•
When accommodating the terminal bed box, make sure that the connec-
tors on the box side are not removed. If removed, it cannot operate nor-
mally.
Maximum
Breaker for current leakage
current (A)
30 A 30 mA or 100 mA 0.1 sec. or less
24.0
40 A 100 mA 0.1 sec. or less
36.0
50 A 100 mA 0.1 sec. or less
49.9
15 A 30 mA or 100 mA 0.1 sec. or less
10.8
20 A 30 mA or 100 mA 0.1 sec. or less
16.3
25 A 30 mA or 100 mA 0.1 sec. or less
22.6
B Cover
B Knockout hole
C Conduit
G Tensile force
I Transmission wiring
B Round terminal
13
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