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Wiring Between Units
Connect the wires between the units correctly. Errors made in the connections can result in the
!
unit malfunctioning.
Connect the control wires between the outdoor unit and indoor unit as shown in the figure below:
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Connecting the Remote Controller — BH, CH, KH, NH, SBH, SH, TUH, TUH-1, UH only
Any standard 3-core cable operating at 12VAC with a cross-sectional area ranging from 0.3mm
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0.75mm
2
GB
When routing this cable, care should be taken to ensure that it is not in direct contact with mains
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cable or routed in duct or conduit containing power cables.
Connect the terminals A, B and C on the remote controller with the terminals A, B and C on the
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indoor unit terminal block, ensuring that the terminals are matched up correctly.
Full instructions on the setting and operation of this controller are included in the owner's manual,
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supplied with the remote controller.
Group Control – BH, CH, KH, NH, SBH, SH, TUH, TUH-1, UH only
Up to 16 air conditioners can be controlled as a group using a single remote controller. (The
control circuit for each indoor unit originates at the outdoor unit from the incoming phase
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connection marked L or L
throughout the group are derived from the same phase.)
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No parts (except for the connecting cable) are required for group control.
Proceed with the power cable connections and with the wiring connections between the indoor
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and outdoor units in exactly the same way as for individual air conditioner operation.
Connect the remote controller and the indoor unit in the following sequence:
1 Connect together the terminals A, B and C on both the remote controller and indoor unit No.1
ensuring that the terminals are matched up correctly;
2 Connect together terminals B and C on indoor units No.1 and No.2;
3 Connect together terminals B and C on indoor units No.2 and No.3;
4 Proceed in the same way to make the necessary connections up to indoor unit No.16;
Indoor unit (No.1)
5 Leave the (CN12) connector in unit No.1 but remove
from any further indoor units to prevent malfunction due to miswiring.
6 Set the rotary switch position on each indoor unit to a different number, starting with position 1 for
unit No.1 which is connected to the remote controller. This will also ensure that each unit will start
up at a slightly different time therefore ensuring no increase in start-up current.
Tel: 01823 665660
Heronhill - for all your Toshiba requirements
(Indoor unit terminal blocks)
Connect the central
remote controller here
(OPTION)
and with a maximum length of 500 metres can be used.
. It is important that on a group system that all the control circuits
1
Remote controller
Indoor unit
Indoor unit
(No.2 – No.16)
E
W
LECTRICAL
IRING
Connect the remote
controller here
(OPTION)
Precautions
Use cables with a cross-sectional area of at
least 0.75mm
!
maximum length of 500 metres for the remote
controller cable denotes the maximum length
from the remote controller to the furthest
indoor unit.
~ 30 ~
~ 30 ~
www.heronhill.co.uk
Connect wiring between
indoor and outdoor unit here
2
to connect the indoor units. The
Fax: 01823 665807
2
to
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