Installation and Commissioning Guide - MultiElite 2 Split System
Doc. No. 9590-5009
Ver. 1 211221
27
Installation and Commissioning Guide
Multi Split System
Circuit Breaker Size and Amps (Main Power Supply)
1. Compute the total FLA of all the installed equipment (o the combined indoor units) using the table
below:
Example:
MRC-120CS-5 + 2x WRE-026CS + 2 x BRE-035CS + 1 x MRE-035CS
Total System FLA = 19.0 + 2(0.24) + 2 (1.1) + 1 (0.57) = 22.25A
Full Load Amps Table
Model
MRC-075CS-3
MRC-100CS-4
MRC-120CS-5
FLA (Outdoor Unit)
17.5
19.0
19.0
Model
WRE-026CS
WRE-035CS
WRE-050CS
WRE-072CS
WRE-085CS
FLA (Indoor Unit)
0.24
0.275
0.275
0.4
0.4
Model
BRE-026CS
BRE-035CS
BRE-050CS
BRE-070CS
FLA (Indoor Unit)
1.1
1.1
1.3
1.3
Model
MRE-035CS
MRE-053CS
FLA (Indoor Unit)
0.57
0.57
2. From the calculated system total FLA, use the table below to determine cable sizes and system circuit breaker size:
Example:
Total System FLA = 28.71A will require 6.0mm (Supply Mains), 1.0mm (OD to ID wire) and 32A CB fuse.
Total FLA Range
20A and less
>20A to 25A
>25A to 32A
Outdoor Unit Cable Size (Supply Mains)
2.5
4.0
6.0
Indoor Unit Cable Size (Outdoor to Indoor wire)
1.0
1.0
1.0
Circuit Breaker Size
20A
25A
32A
NOTES:
Cable sizes are suggested minimum and should be used as a guide only.
Refer to the latest edition of the AS/NZS 3000 "Australian Wiring Rules" for more details.
Cable size recommendation selected in accordance to maximum conductor temperature of 75°C with wiring enclosed
in air.
Wires, circuit breaker and fuses are NOT supplied with the units, installer has to provide.
