Toshiba RBC-TWP101E User manual

Installation manual 1
English
Manuel d’installation 18
Français
R32 or R410A
EH99865801-3
AIR CONDITIONER (SPLIT TYPE)
Installation manual
Branch kit 1:2
Model name:
RBC-TWP101E

1EN
Branch Kit 1:2
NOTES
Be careful of the following items before installation
1. This Installation Manual is for the branch pipe using for double twin simultaneous
system.
2. Check the combination of indoor unit, outdoor unit and branch pipe again before
installation.
3. Be sure to install the indoor unit in the same room and to observe the application of floor
space.
Should the refrigerant leaks and exceeds the limit concentration, accumulation of highly
concentrated refrigerant occurs, cause an oxygen deficiency accident or a fire.
4. For installation for indoor or outdoor unit, please read the Installation Manual supplied
with indoor or outdoor unit.
5. Make sure to observe the cautions for each contents.
Be sure to follow the wiring or the setting procedure in the Installation Manual.
Contents
1 COMPONENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 REFRIGERANT PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3 WIRING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4 PIPING HEAT INSULATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5 TEST RUN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6 DELIVERY TO CUSTOMER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Branch Kit 1:2
2
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1COMPONENT
The following parts are supplied as accessories of the branch pipes. Check them when
opening the carton box.
Part Quantity Shape Use
Installation manual 5 This booklet For installation works
Branch pipe
Gas side
1 Ø25.4 mm – Ø15.9 mm, Ø15.9 mm
1Ø25.4 mm – Ø28.6 mm
(Inner diameter)
Liquid side 1 Ø12.7 mm – Ø9.5 mm, Ø9.5 mm

3EN
Branch Kit 1:2
2REFRIGERANT PIPING
Tolerance of pipe length and Height difference
<RAV-SM2244AT8, SM2804AT8 series>
* Ensure that the shortest pipe length complies with the following:
L+b≥5m
a≥b
Pipe Length
(One Direction)
Full length (L + a or L + b) Below 70 m
(actual length)
Branch piping (a, b) Below 20 m
(actual length)
Difference of branch piping length
(b–a,ora–b) Below 10 m
Height
Difference
Outdoor Unit -
Indoor Unit
(H)
Outdoor Unit Installed
Above Indoor Unit Below 30 m
Outdoor Unit Installed
Below Indoor Unit Below 30 m
Between Indoor Units (Δh) Below 0.5 m
Remarks Less than 10 bends
H
L
ab
Indoor unit B
Indoor unit A
Outdoor unit
Branch
piping
Branch
piping
Main piping

Branch Kit 1:2
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<RAV-SM2246AT8, SM2806AT8 series>
* Ensure that the shortest pipe length complies with the following:
L+b≥5m
a≥b
CAUTION
When planning a layout for Units A and B, comply with the following:
1. The lengths after branching (“a” and “b”) should be equal if feasible. Install Units A and B
so that the difference of the branching lengths becomes less than 10 m if the lengths
cannot be equal due to the branch pipe position.
2. Install Units A and B on the same level. If Units A and B cannot be installed on the same
level, the difference in level should be limited to 0.5 m or less.
3. Be certain to install Units A and B in the same room. Units A and B cannot be operated
independently each other.
Pipe Length
(One Direction)
Full length (L + a or L + b) Below 100 m
(actual length)
Branch piping (a, b) Below 20 m
(actual length)
Difference of branch piping length
(b–a,ora–b) Below 10 m
Height
Difference
Outdoor Unit -
Indoor Unit
(H)
Outdoor Unit Installed
Above Indoor Unit Below 30 m
Outdoor Unit Installed
Below Indoor Unit Below 30 m
Between Indoor Units (Δh) Below 0.5 m
Remarks : Total equivalent length 125 m or less
H
L
ab
Indoor unit B
Indoor unit A
Outdoor unit
Branch
piping
Branch
piping
Main piping

5EN
Branch Kit 1:2
<RAV-GM224*AT8, GM280*AT8 series>
* Ensure that the shortest pipe length complies with the following:
L+b≥5m
a≥b
*1: Full length of the following model is 60 m.
RAV-GM2241AT8(J)-E, RAV-GM2241AT8(J)-TR,
RAV-GM2801AT8(J)-E, RAV-GM2801AT8(J)-TR
CAUTION
When planning a layout for Units A and B, comply with the following:
1. The lengths after branching (“a” and “b”) should be equal if feasible. Install Units A and B
so that the difference of the branching lengths becomes less than 10 m if the lengths
cannot be equal due to the branch pipe position.
2. Install Units A and B on the same level. If Units A and B cannot be installed on the same
level, the difference in level should be limited to 0.5 m or less.
3. Be certain to install Units A and B in the same room. Units A and B cannot be operated
independently each other.
Pipe Length
(One Direction)
Full length (L + a or L + b) Below 100*1m
(actual length)
Branch piping (a, b) Below 20 m
(actual length)
Difference of branch piping length
(b–a,ora–b) Below 10 m
Height
Difference
Outdoor Unit -
Indoor Unit
(H)
Outdoor Unit Installed
Above Indoor Unit Below 30 m
Outdoor Unit Installed
Below Indoor Unit Below 30 m
Between Indoor Units (Δh) Below 0.5 m
H
L
ab
Indoor unit B
Indoor unit A
Outdoor unit
Branch
piping
Branch
piping
Main piping

Branch Kit 1:2
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Piping materials and sizes
Use general copper pipes with a wall thickness of 0.8 mm for Ø6.4 mm, Ø9.5 mm, and
Ø12.7 mm, with a wall thickness of 1.0 mm for Ø15.9 mm, with a wall thickness of 1.2 mm
for Ø19.1 mm, and with a wall thickness of 1.0 mm for Ø28.6 mm (half hard).
Do not use any copper pipes with a wall thickness less than these thicknesses.
In parentheses ( ) are wall thickness
Branch pipe
Now the refrigerant pipe is installed using branch pipes supplied as accessories.
• Bend and adjust the refrigerant piping so that the branch pipes and pipe after branching
become horizontal.
• Fix the branch pipes onto a wall in a ceiling or onto a column.
• Provide a straight pipe longer than 500 mm in length as the main piping of the branches.
Air Purging
For the complete information, read the installation manual for outdoor units of air
conditioner.
Branch pipe
Pipe side
Gas side Main piping Ø28.6 (half hard 1.0)
Branch piping Ø15.9 (1.0)
Liquid side Main piping Ø12.7 (0.8)
Branch piping Ø9.5 (0.8)
Horizontal
Inclination
500 mm or
more
Horizontal
Inclination
Correct Correct
IncorrectIncorrect

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Branch Kit 1:2
Additional Refrigerant Amount
<RAV-SM2244AT8, SM2804AT8 series>
Formula for Calculating Additional Refrigerant Amount
Do not remove the refrigerant even if the additional refrigerant amount becomes minus
result as a result of calculations by the following formula and operate the air conditioner as it
is.
A: Additional refrigerant amount per meter of actual main piping length (kg)
B: Additional refrigerant amount per meter of actual branch piping length (kg)
L: Actual length of main piping (m)
a, b: Actual length of branch piping (m)
Additional refrigerant amount (kg) = Main piping additional refrigerant amount (kg) +
Branch piping additional refrigerant amount (kg)
= A × (L – 28) + B × (a + b – 4)
Standard piping length Additional refrigerant
amount per Meter (kg/m)
Main piping Branch piping A B
SM224
SM280 28 m 2 m 0.080 0.040
a
L
b
Indoor unit B
Indoor unit A
Outdoor unit
Branch
piping
Branch
piping
Main piping

Branch Kit 1:2
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<RAV-SM2246AT8, SM2806AT8 series>
Formula for Calculating Additional Refrigerant Amount
Do not remove the refrigerant even if the additional refrigerant amount becomes minus
result as a result of calculations by the following formula and operate the air conditioner as it
is.
A: Additional refrigerant amount per meter of actual main piping length (kg)
B: Additional refrigerant amount per meter of actual branch piping length (kg)
L: Actual length of main piping (m)
a, b: Actual length of branch piping (m)
CAUTION
1. Be certain to write the additional refrigerant amount, pipe length (actual length), head
and other specification on the nameplate put on the outdoor unit for recording.
2. Seal the correct amount of additional refrigerant in the system.
Additional refrigerant amount (kg) = Main piping additional refrigerant amount (kg) +
Branch piping additional refrigerant amount (kg)
= A × (L – 28) + B × (a + b – 4)
Standard piping length Additional refrigerant
amount per Meter (kg/m)
Main piping Branch piping A B
SM224
SM280 28 m 2 m 0.090 0.045
a
L
b
Indoor unit B
Indoor unit A
Outdoor unit
Branch
piping
Branch
piping
Main piping

9EN
Branch Kit 1:2
<RAV-GM224*AT8, GM280*AT8 series>
Formula for Calculating Additional Refrigerant Amount
Do not remove the refrigerant even if the additional refrigerant amount becomes minus
result as a result of calculations by the following formula and operate the air conditioner as it
is.
A: Additional refrigerant amount per meter of actual main piping length (kg)
B: Additional refrigerant amount per meter of actual branch piping length (kg)
L: Actual length of main piping (m)
a, b: Actual length of branch piping (m)
CAUTION
1. Be certain to write the additional refrigerant amount, pipe length (actual length), head
and other specification on the nameplate put on the outdoor unit for recording.
2. Seal the correct amount of additional refrigerant in the system.
Additional refrigerant amount (kg) = Main piping additional refrigerant amount (kg) +
Branch piping additional refrigerant amount (kg)
= A × (L – 28) + B × (a + b – 4)
Standard piping length Additional refrigerant
amount per Meter (kg/m)
Main piping Branch piping A B
GM224
GM280 28 m 2 m 0.080 0.040
a
L
b
Indoor unit B
Indoor unit A
Outdoor unit
Branch
piping
Branch
piping
Main piping

Branch Kit 1:2
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Gas Leak Test
• Use a leak detector manufactured specially for the HFC refrigerant (R32, R410A,
R134a, etc.) when testing R32 or R410A.
The sensitivity of leak detectors for previous HCFC refrigerants (such as R22) lowers to
about 1/40 when used with HFC refrigerants and these detectors cannot be used.

11EN
Branch Kit 1:2
3WIRING
1. Using the specified cables, ensure to connect the wires, and fix wires securely so
that the external tension to the cables do not affect the connecting part of the
terminals.
Incomplete connection or fixation may cause a fire, etc.
Be certain to install wires by connecting them to terminals of the same numbers
according to the following wiring diagram.
2. Be sure to connect earth wire. (Grounding work)
Do not connect the earth wire to gas pipe, city water pipe, lightning rod, or the earth wire
of telephone.
Incomplete earth causes an electrical shock.
3. For electric work, strictly follow the Local Regulation in each country, Indoor,
outdoor, and this Installation Manual, and use an exclusive circuit.
Capacity shortage of power circuit or incomplete installation may cause an electrical
shock or a fire.
Internal And External Connection Wiring
1. Install wires from the outdoor unit to the header unit as in usual wiring.
(Wires (1), (2), (3) and earth wire.)
2. Install wires (1), (2) and earth wire only when installing connection wires from the header
unit to the follower unit.
Remote Controller wiring
1. Installing connection shield wires (MVVS 0.5 to 2.0 mm2) from the header unit to the
follower unit to conform to EMC standard.
2. Install shield wires between the header unit and follower unit. The shield wires of the
remote controller have no polarities.
The remote controller circuits are low voltage circuits. These circuits must not be made
to directly contact internal and external wires or contained in the same conduit tubes that
house internal and external wires.
(Otherwise malfunction will be caused by noise)

Branch Kit 1:2
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Wiring Diagram
REQUIREMENT
• The remote controller wiring has no polarity. Connections to terminals A and B of an
indoor unit may be replaced with each other.
• The remote controller wires and indoor-indoor connecting wire must not be in direct
contact or in the same conduit pipe. (Doing so may cause a malfunction of the control
system due to noise.)
Wiring Specification
Specification of Wires Between Units and Numbers of Wires.
Procure necessary parts and perform all connection work locally.
Outdoor unit - indoor unit
(header unit)
No. of wires 4 (Include earth wire)
Wire diameter H07RN-F or 60245IEC66 1.5 mm2or more
Indoor unit
(header unit)
- indoor unit
(follower unit)
No. of wires 2
Wire diameter H07RN-F or 60245IEC66 1.5 mm2or more
Remote controller wiring No. of wires 2 (Shield wire)
Wire diameter Between 0.5 mm2and 2 mm2(up to 200 m)
Earth wire of indoor unit H07RN-F or 60245IEC66 1.5 mm2or more
123 123
AB AB
L1 L2 L3
N
123
Remote
Controller
Header
Indoor Unit
Outdoor Unit
Follower
Indoor Unit
Power supply

13EN
Branch Kit 1:2
<RAV-GM224*AT8, GM280*AT8 series>
REQUIREMENT
• The remote controller wiring has no polarity. Connections to terminals A and B of an
indoor unit may be replaced with each other.
• The remote controller wires and indoor-indoor connecting wire must not be in direct
contact or in the same conduit pipe. (Doing so may cause a malfunction of the control
system due to noise.)
Wiring Specification
Specification of Wires Between Units and Numbers of Wires.
Procure necessary parts and perform all connection work locally.
Outdoor unit - indoor unit
(header unit)
No. of wires 4 (Include earth wire)
Wire diameter H07RN-F or 60245IEC66 1.5 mm2or more
Indoor unit
(header unit)
- indoor unit
(follower unit)
No. of wires 2
Wire diameter H07RN-F or 60245IEC66 1.5 mm2or more
Remote controller wiring No. of wires 2 (Shield wire)
Wire diameter Between 0.5 mm2and 2 mm2(up to 200 m)
Earth wire of indoor unit H07RN-F or 60245IEC66 1.5 mm2or more
123 123
AB AB
L1 L2 L3
N
123
Remote
Controller
Header
Indoor Unit
Outdoor Unit
Follower
Indoor Unit
Power supply

Branch Kit 1:2
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<RAV-SM2244AT8, SM2804AT8 series>
WARNING
Be sure to attach the provided clamp filter to the power supply wire in order to conform to
EMC standards.
Stripping length power cord and connecting wire
123 L1 L2 L3 N
Indoor/outdoor
connecting wire
Power supply wire
Earth screw Earth screw
Cord clamp Cord clamp
Cord clampCord clamp
Clamp filter
(accessory)
(mm)
10
30
50
110 2 3
10
40
50
10 L1 L2 L3 N
Earth line
Connecting wire
Earth line
Power supply wire

15EN
Branch Kit 1:2
<RAV-SM2246AT8, SM2806AT8, GM224*AT8, GM280*AT8 series>
Stripping length power cord and connecting wire
123 L1 L2 L3 N
Indoor/outdoor
connecting wire
Power supply wire
Earth screw Earth screw
Cord clamp Cord clamp
(mm)
10
30
50
110 2 3
10
40
50
10 L1 L2 L3 N
Earth line
Connecting wire
Earth line
Power supply wire

Branch Kit 1:2
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Address setup
For address setup procedure, refer to the indoor unit installation manual.
NOTE
When using the equipment at the first time, it will take a lot of time that the remote controller
accepts an operation after power was on. However, it is not a trouble.
Automatic address
While automatic addressing, the operation can not be performed on the remote controller.
• For automatic addressing, Max. 10 minutes (generally, approx. 5 minutes) are required.
When power will be turned on after finish of automatic addressing;
• It will require Max. 10 minutes (generally, approx. 3 minutes) that outdoor unit starts
operation after power was on.

17EN
Branch Kit 1:2
4PIPING HEAT INSULATION
Thermal insulation was produced locally.
Be certain to thermally insulate the piping both on the liquid and gas sides.
• Use thermal insulating materials for piping higher than 120 degree in heat resistance.
Example: EPT - Ethylene, propylene, terpolymer
• Thermally insulate the branch pipe sections using fitting covers (for tees) more than
10 mm in thickness or processing thermal insulation materials as follows.
(Thermal insulation materials for the branch pipes are not supplied as accessories.)
• Seal the branch pipe sections tightly without producing gaps.
5TEST RUN
Be certain to conduct a test run in accordance with the procedures contained in the
operating and installation manual supplied with the indoor units.
6DELIVERY TO CUSTOMER
• Make certain to hand over the installation manual supplied with the indoor units to the
customer.
• Deliver the system after thoroughly explaining the contents of the installation manual.
It is important to explain to the customer in details about simultaneously starting and
stopping the two indoor units by operating one remote controller.
Thermally insulated pipe of main piping
Seal seams using foamed urethane or
a similar material
Thermally insulated pipe of piping
Thermally insulated material
Outside diameter of thermally insulated pipe of branch piping
90° notch
100 mm or more
Seal with vinyl tape
Cut 90°

Branch Kit 1:2
18
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REMARQUES
Faites attention aux points suivants avant l’installation
1. Ce manuel d’installation est fait pour l’utilisation du tuyau d’embranchement pour
systèmes doubles simultanés.
2. Vérifiez l’association entre l’unité intérieure, l’unité extérieure et le tuyau
d’embranchement avant l’installation.
3. Veillez à installer l’unité intérieure dans la même pièce et à respecter l’espace
nécessaire à l’installation.
En cas de fuite du réfrigérant dépassant la limite de concentration, une accumulation de
réfrigérant fortement concentré se produit, pouvant causer un accident dû à un manque
d’oxygène ou un incendie.
4. Pour l’installation des unités intérieure ou extérieure, veuillez consulter le manuel
d’installation fourni avec les unités intérieure ou extérieure.
5. Veillez à respecter les précautions pour chaque élément.
Veillez à suivre les instructions de raccordement et de configuration décrites dans le
manuel d’installation.
Sommaire
1 COMPOSANTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2 TUYAUTERIE DE FLUIDE FRIGORIGENE . . . . . . . . . . . . . . . . . . . . . . 20
3 CABLAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4 ISOLATION THERMIQUE DE TUYAUTERIE . . . . . . . . . . . . . . . . . . . . 34
5 ESSAI DE FONCTIONNEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6 LIVRAISON AU CLIENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

19FR
Branch Kit 1:2
1COMPOSANTS
Les pièces suivantes sont fournies comme accessoires des tuyaux de branchement.
Vérifiez-les à l’ouverture du carton.
Pièce Quantité Forme Utilisation
Manuel d’installation 5 Ce manuel Pour les travaux d’installation
Tuyau de
branchement
Côté gaz
1 Ø25,4 mm – Ø15,9 mm, Ø15,9 mm
1Ø25,4 mm – Ø28,6 mm
(Diamètre intérieur)
Côté liquide 1 Ø12,7 mm – Ø9,5 mm, Ø9,5 mm