Toshiba RBC-DTWP101E User manual

EH99868101-3
Installation manual 1
English
Manuel d’installation 18
Français
R32 or R410A
AIR CONDITIONER (SPLIT TYPE)
Installation manual
AIR CONDITIONER (SPLIT TYPE)
Installation manual
Branch kit set 1:4
Model name:
RBC-DTWP101E

1EN
Branch Kit Set 1:4
NOTES
Be careful of the following items before installation
1. This Installation Manual is for the branch pipe using for 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 Set 1:4
2
EN
EN
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)
2 Ø15.9 mm – Ø15.9 mm, Ø15.9 mm
2 Ø15.9 mm – Ø12.7 mm, Ø12.7 mm
Liquid side
1 Ø12.7 mm – Ø9.5 mm, Ø9.5 mm
2 Ø9.5 mm – Ø9.5 mm, Ø9.5 mm
2 Ø9.5 mm – Ø6.4 mm, Ø6.4 mm

3EN
Branch Kit Set 1:4
2REFRIGERANT PIPING
Tolerance of pipe length and Height difference
<RAV-SM2244AT8, SM2804AT8 series>
* Ensure that the shortest pipe length complies with the following:
Outdoor unit
Allowable pipe length (m)
Total length
• 1 + 2 + 4
• 1 + 2 + 5
• 1 + 3 + 6
• 1 + 3 + 7
Maximum
Branch piping
• 4
• 5
• 6
• 7
Maximum
Branch piping
• 4 + 2
• 5 + 2
• 6 + 3
• 7 + 3
Maximum
Branch piping
• ( 4 + 2) – ( 5 + 2)
• ( 4 + 2) – ( 6 + 3)
• ( 4 + 2) – ( 7 + 3)
• ( 5 + 2) – ( 6 + 3)
• ( 5 + 2) – ( 7 + 3)
• ( 6 + 3) – ( 7 + 3)
Maximum
SM2244 70 15 20 6
SM2804 70 15 20 6
Outdoor unit
Height difference (m)
Indoor-outdoor H Indoor-indoor
(Δh)
Indoor unit: Upper Outdoor unit: Upper
SM2244 30 30 0.5
SM2804 30 30 0.5
1 + 2 + 4 ≥5m
5≥4
1 + 3 + 6 ≥5m
7≥6
45
2
1
3
67
H
Indoor unit D
Outdoor unit
Indoor unit C Indoor unit B Indoor unit A

Branch Kit Set 1:4
4
EN
EN
<RAV-SM2246AT8, SM2806AT8 series>
* Ensure that the shortest pipe length complies with the following:
Outdoor unit
Allowable pipe length (m)
Total length
• 1 + 2 + 4
• 1 + 2 + 5
• 1 + 3 + 6
• 1 + 3 + 7
Maximum
Branch piping
• 4
• 5
• 6
• 7
Maximum
Branch piping
• 4 + 2
• 5 + 2
• 6 + 3
• 7 + 3
Maximum
Branch piping
• ( 4 + 2) – ( 5 + 2)
• ( 4 + 2) – ( 6 + 3)
• ( 4 + 2) – ( 7 + 3)
• ( 5 + 2) – ( 6 + 3)
• ( 5 + 2) – ( 7 + 3)
• ( 6 + 3) – ( 7 + 3)
Maximum
SM2246 100 15 20 6
SM2806 100 15 20 6
Remarks : Total equivalent length 125 m or less
Outdoor unit
Height difference (m)
Indoor-outdoor H Indoor-indoor
(Δh)
Indoor unit: Upper Outdoor unit: Upper
SM2246 30 30 0.5
SM2806 30 30 0.5
1 + 2 + 4 ≥5m
5≥4
1 + 3 + 6 ≥5m
7≥6
45
2
1
3
67
H
Indoor unit D
Outdoor unit
Indoor unit C Indoor unit B Indoor unit A

5EN
Branch Kit Set 1:4
<RAV-GM224*AT8, GM280*AT8 series>
* Ensure that the shortest pipe length complies with the following:
Outdoor unit
Allowable pipe length (m)
Total length
• 1 + 2 + 4
• 1 + 2 + 5
• 1 + 3 + 6
• 1 + 3 + 7
Maximum
Branch piping
• 4
• 5
• 6
• 7
Maximum
Branch piping
• 4 + 2
• 5 + 2
• 6 + 3
• 7 + 3
Maximum
Branch piping
• ( 4 + 2) – ( 5 + 2)
• ( 4 + 2) – ( 6 + 3)
• ( 4 + 2) – ( 7 + 3)
• ( 5 + 2) – ( 6 + 3)
• ( 5 + 2) – ( 7 + 3)
• ( 6 + 3) – ( 7 + 3)
Maximum
GM224 50 15 20 6
GM280 50 15 20 6
Outdoor unit
Height difference (m)
Indoor-outdoor H Indoor-indoor
(Δh)
Indoor unit: Upper Outdoor unit: Upper
GM224 30 30 0.5
GM280 30 30 0.5
1 + 2 + 4 ≥5m
5≥4
1 + 3 + 6 ≥5m
7≥6
45
2
1
3
67
H
Indoor unit D
Outdoor unit
Indoor unit C Indoor unit B Indoor unit A

Branch Kit Set 1:4
6
EN
EN
CAUTION
When planning a layout for Units A and B, C and D, comply with the following:
1. The lengths after branching ( 3 + 7, 3 + 6, 2 + 5, 2 + 4) should be equal if
feasible. Install Units A and B, C and D so that the difference of the branching lengths
becomes less than 6 m if the lengths cannot be equal due to the branch pipe position.
2. Install Units A and B, C and D on the same level. If Units A and B, C and D 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, B, C and D in the same room. Units A, B, C and D cannot be
operated independently each other.
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
Outdoor
unit
Pipe diameter (mm) Number of
bent
portions
Main pipe Branch piping
Gas side Liquid side Gas side Liquid side
224 Ø28.6 Ø12.7 2, 3: Ø15.9
4, 5, 6, 7: Ø12.7
2, 3: Ø9.5
4, 5, 6, 7: Ø6.4 10 or less
280 Ø28.6 Ø12.7 2 to 7: Ø15.9 2 to 7: Ø9.5 10 or less

7EN
Branch Kit Set 1:4
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.
Horizontal
Inclination
500 mm or
more
Horizontal
Inclination
Correct Correct
Incorrect Incorrect

Branch Kit Set 1:4
8
EN
EN
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.
Outdoor unit
Diameter of connecting pipe
(liquid side)
Amount of additional refrigerant
per meter (g/m)
1 2, 3 4 to 7 αβγ
SM2244 Ø12.7 Ø9.5 Ø6.4 80 40 20
SM2804 Ø12.7 Ø9.5 Ø9.5 80 40 40
Outdoor unit
Amount of additional refrigerant (g) =
Amount of refrigerant added for main pipe +
amount of refrigerant added for first branch piping +
amount of refrigerant added for second branch piping
SM2244 α×(1–28)+β × ( 2 + 3 – 4) + γ × ( 4 + 5 + 6 + 7)
SM2804 α×(1–28)+β × ( 2 + 3 – 4) + γ × ( 4 + 5 + 6 + 7)
45
2
1
3
67
Indoor unit
Outdoor unit
Indoor unit Indoor unit Indoor unit

9EN
Branch Kit Set 1:4
<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.
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.
Outdoor unit
Diameter of connecting pipe
(liquid side)
Amount of additional refrigerant
per meter (g/m)
1 2, 3 4 to 7 αβγ
SM2246 Ø12.7 Ø9.5 Ø6.4 90 45 20
SM2806 Ø12.7 Ø9.5 Ø9.5 90 45 45
Outdoor unit
Amount of additional refrigerant (g) =
Amount of refrigerant added for main pipe +
amount of refrigerant added for first branch piping +
amount of refrigerant added for second branch piping
SM2246 α×(1–28)+β × ( 2 + 3 – 4) + γ × ( 4 + 5 + 6 + 7)
SM2806 α×(1–28)+β × ( 2 + 3 – 4) + γ × ( 4 + 5 + 6 + 7)
45
2
1
3
67
Indoor unit
Outdoor unit
Indoor unit Indoor unit Indoor unit