12
GB
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 control-
ler.
•
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 using a 0.75 mm
2
core cable. If the distance is more than 10 m, use a 1.25 mm
2
junction cable.
[Fig. 9.2.1] (P.4) MA Remote controller
[Fig. 9.2.2] (P.4) M-NET 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
•
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 and under tension. Wiring under tension
may break, or overheat and burn.
9.3. Connecting electrical connections
Please identify the model name of the operation manual attached on the terminal box
cover with that shown on the rating name plate.
1. Remove the screw (1pc) holding the cover to dismount the cover.
[Fig. 9.3.1] (P.5)
2. Open knockout holes
(Recommend to use a screwdriver or the like for this work.)
[Fig. 9.3.2] (P.5)
3. Fix power source wiring to terminal box by using buffer bushing for tensile force.
(PG connection or the like.) Connect transmission wiring to transmission terminal
block through the knockout hole of terminal box using ordinary bushing.
[Fig. 9.3.3] (P.5)
4. Connect the power source, Earth, transmission and remote controller wiring. The
dismounting of the terminal box is not needed.
[Fig. 9.3.4] (P.5)
[Shield wire connection]
[Fig. 9.3.5] (P.5)
5. After wiring is complete, make sure again that there is no slack on the connec-
tions, and attach the cover onto the terminal box in the reverse order of removal.
Notes:
•
Do not pinch the cables or wires when attaching the terminal box cover.
Doing so may cause a risk of disconnection.
•
When accommodating the terminal box, make sure that the connectors on
the box side are not removed. If removed, it cannot operate normally.
9.4. External I/O specifications
Caution:
1. Wiring should be covered by insulation tube with supplementary insula-
tion.
2. Use relays or switches with IEC or equivalent standard.
3. The electric strength between accessible parts and control circuit should
have 2750 V or more.
9.5. Selecting the external static pressure
As the factory setting is for use under an external static pressure of 50 Pa, no switch
operation is needed when using under the standard condition.
[Fig. 9.5.1] (P.5)
9.6. Setting addresses
(Be sure to operate with the main power turned OFF.)
[Fig. 9.5.1] (P.5)
•
There are two types of rotary switch setting available: setting addresses 1 to 9
and over 10, and setting branch numbers.
•
The rotary switches are all set to “0” when shipped from the factory. These
switches can be used to set unit addresses and branch numbers at will.
•
The determination of indoor unit addresses varies with the system at site. Set
them referring to the Data Book.
9.7. Sensing room temperature with the
built-in sensor in a remote controller
If you want to sense room temperature with the built-in sensor in a remote controller,
set SW1-1 on the control board to “ON”. The setting of SW1-7 and SW1-8 as neces-
sary also makes it possible to adjust the air flow at a time when the heating thermom-
eter is OFF.
9.8. Changing the power voltage setting
(Be sure to operate with the main power turned OFF.)
[Fig. 9.5.1] (P.5)
Please set the switch SW5 according to the power voltage.
•
Set SW5 to 240V side when the power supply is 240 volts.
•
When the power supply is 220 and 230 volts, set SW5 to 220V side.
A
Terminal block for indoor transmission cable
B
Terminal block for outdoor transmission cable
C
Remote controller
A
Non-polarized
B
TB15
C
Remote Controller
D
TB5
A
Screw holding cover (1pc)
B
Cover
C
Terminal box
D
Knockout hole
E
Remove
F
Use PG bushing to keep the weight of the cable and external force from being applied
to the power supply terminal connector. Use a cable tie to secure the cable.
G
Power source wiring
H
Use ordinary bushing
I
Transmission wiring
J
Terminal block for power source
K
Terminal block for indoor transmission
L
Terminal block for remote controller
A
Terminal block
B
Round terminal
C
Shield wire
D
The earth wire from two cables are connected together to the S terminal. (Dead-end
connection)
E
Insulation tape (To keep the earth wire of the shielded cable from coming in contact
with the transmission terminal)
External static pressure
Switch operation
35 Pa
50 Pa
70 Pa
100 Pa
150 Pa
<Indoor controller board>
<Indoor controller board>
1
How to set addresses
Example: If Address is “3”, remain SW12 (for over 10) at “0”, and match
SW11(for 1 to 9) with “3”.
2
How to set branch numbers SW14 (Series R2 only)
The branch number assigned to each indoor unit is the port number of the
HBC controller to which the indoor unit is connected.
Leave it to “0” on the non-R2 series of units.
SWA
SWC
3
2
1
1
2
SWA
SWC
3
2
1
1
2
SWA
SWC
3
2
1
1
2
SWA
SWC
3
2
1
1
2
SWA
SWC
3
2
1
1
2
02_WT06410_GB.fm Page 12 Friday, November 25, 2011 3:59 PM
