Digital/Super Digital Multi Split System Wiring Schematic - Toshiba RAS-107SKV-E5 Technical Handbook

Example 2
Installed length main pipe L to distributor=50m
Installed length branch b=15m
Installed length branch c=10m
Installed length branch d=6m
Installed length branch a=15m
Installed length branch e=5m
Installed length branch f=10m
Additional Charge
Sizes (")
Model
Gas/Liquid
SM2244AT8-E 1 1/8 – 1/2
SM2804AT8-E 1 1/8 – 1/2
Gas calculation - [Main pipe] (L-28) x
Gas calculation - [Main pipe] (L-28) x
Example 1
Installed length main pipe L to distributor=20m
Installed length branch b=10m
Installed length branch c=5m
Installed length branch d=5m
Installed length branch a=10m
Installed length branch e=5m
Installed length branch f=5m
Example 2
Total pipe length L + b + c
Branch length b + c
Branch length b + d
Branch length a + e
Branch length a + f
Subtractive pipe length c+b - d+b
Subtractive pipe length c+b - e+a
Subtractive pipe length c+b - f+a
Subtractive pipe length d+b - e+a
Subtractive pipe length d+b - f+a
Subtractive pipe length e+a - f+a
Main Pipes
Pre-charge (m) Add amount

Factor (kg/m) – [
28 0.080
28 0.080

+ [Branch Pipe] (a + b - 4) x

+ [Branch Pipe] (a + b - 4) x
Example 1 using SM2804AT8-E
Total pipe length
Branch pipe length
Branch pipe length
Digital / Super Digital Multi Split System Wiring Schematic
Indoor Unit D Indoor Unit C
Configuration same for Twin, Triple & Quad combinations.
A common controller will be used, individual controls is not possible.
Master to Slave power supply.
Remote
Controller
Interconnecting Cables
3 Core+Earth Power connected to terminals
2 Core+Earth Power connected to terminals
2 Core Control connected to terminals

Sizes (") Pre-charge (m)
Gas/Liquid
] Factor
5/8 – 3/8 4
5/8 – 3/8 4
ß + (c+d+e+f) x
ß + (c+d+e+f) x

L - 28 x
a + b ­ 4 x
ß
c + d + e + f x
Indoor Unit B


A + B
50+ 15+ 10 = 75m
15+ 10 = 25m
15+ 6 = 21m
15+ 5 = 20m
15+ 10 = 25m
10+ 15- 6+ 15 = 4m
10+ 15- 5+ 15 = 5m
10+ 15- 10+ 15 = 0m
6+ 15- 5+ 15 = 1m
6+ 15- 10+ 15 = 1m
6+ 15- 10+ 15 = 1m
Branch pipes
Add amount Sizes (")
(g/m) – [ß] Gas/Liquid
0.040 1/2 – 1/4
0.040 5/8 – 3/8
γ
= additional charge
γ
= additional charge
20 - 28 =-8 x 0.080=
10+10- 4 =16 x 0.040=
γ
5+5+5+5 =20 x 0.040=
Add Amount
Indoor Unit A
Add amount
γ
(g/m) – [ ]
0.020
0.040
-0.64 +
0.64 +
0.80
0.80 kg
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