Table 1 Maximum allowable capacity index per Branch Selector unit
Model
BSF4Q54TVJ
BSF6Q54TVJ
BSF8Q54TVJ
Table 2 Capacity index of indoor units
Capacity type expressed as indoor unit's model No.
Indoor unit's capacity index (for use in computation)
<Example selection>
In the case of a Branch Selector unit connected to a FXFQ12P and a FXMQ18P.
Total capacity index = 12 + 18 = 30
1-4 Combinations
• This Branch Selector unit is only for systems for models REYQ-X*, REYQ-T*, RELQ-T*,
RWEQ-T*, REYQ-PC and RWEYQ-PC series.
• Refer to outdoor unit Engineering Data Book for details of applicable indoor units.
1-5 Checklist
Exercise particular care concerning the following items during installation work and check again
after installation is complete:
Post-installation checklist
Has the Branch Selector unit been installed securely?
Did you conduct a gas leak inspection?
Was the unit fully insulated? (Refrigerant pipes)
Is the supply voltage the same as the voltage indicated on the
label?
Are there any wiring mistakes or erroneous wiring or erroneous
pipe connections?
Has the unit been grounded?
Was the size of the electrical wiring selected in accordance with
relevant local and national codes?
Delivery checklist
Has the cover been installed on the control box?
Did you give the customer the installation manual?
English
Max capacity index of connect-
able indoor units per Branch
Selector unit
A ≤ 144
A ≤ 162
A ≤ 162
05
07
5.8
7.5
Checklist
Checklist
Series configuration
Max capacity index of connect-
able indoor units with Branch
Selector units connected in
series
B ≤ 230
09
12
15
18
24
9.5
12
15
18
24
If defective
The unit may fall, vibrate, or operate noisily.
The unit may fail to heat or cool as designed.
The unit may leak water.
The unit may fail to operate or burn up.
The unit may fail to operate, burn up, or produce
abnormal noise.
The unit may pose a hazard in the event of a
short-circuit.
The unit may fail to operate or have electrical
issues.
Check here.
Parallel configuration
Max capacity index of connect-
able indoor units
C ≤ 144
C ≤ 216
C ≤ 290
30
36
42
48
54
72
30
36
42
48
54
72
Check here.
96
96
4