Adding Refrigerant - Bosch Climate 5000 Series Installation Instructions Manual

10.3 Adding Refrigerant

In North America, the standard pipe length is 7.5m (25'). The minimum length is
10ft. The factory charge is suitable for pipe lengths of 10 -25ft. If piping length
exceeds 25ft, the additional refrigerant to be charged can be calculated using the
formula in Table 9. For multi-zone units refer to the multi-zone installation and
operation manual.
Additional refrigerant per pipe length
Connective Pipe
< Standard pipe length
> Standard pipe length
Table 9
Single zone refrigerant pipe summary
Model - Single Zone
IDU
BMS500-AAS009-1CSXRC
BMS500-AAU009-1AHCXB
BMS500-AAS009-1CSXHC
BMS500-AAS012-1CSXRC
BMS500-AAU012-1AHCXB
BMS500-AAS012-1CSXHC
BMS500-AAS018-1CSXRC
BMS500-AAU018-1AHCXB
BMS500-AAS018-1CSXHC
BMS500-AAS024-1CSXRC
BMS500-AAU024-1AHCXC
BMS500-AAS024-1CSXRC
BMS500-AAU036-1AHCXC BMS500-AAS036-1CSXLC
BMS500-AAU048-1AHCXC BMS500-AAS048-1CSXLC
Table 10
CAUTION: CONTAINS REFRIGERANT
 NEVER mix refrigerant types.
Bosch Climate 5000 Series Four Way Cassette Ductless Split Air Conditioner / Heat Pump (06.2022)
Liquid Side: Ø 6.35 (ø 1/4")
Inverter R410A:
(Pipe length – standard length) x 15g/m
(Pipe length – standard length) x 0.16oz/ft
Capacity (Btu/h)
ODU
9K
12K
18K
24K
36K
48K
Additional Refrigerant
N/A
(Pipe length – standard length) x 30g/m
(Pipe length – standard length) x 0.32oz/ft
IDU
Max. Equivalent Length
Liquid Line Vapor Line
1/4" 3/8"
1/4" 1/2"
1/4" 1/2"
1/4" 1/2"
3/8" 5/8"
3/8" 5/8"
Installation Instructions
Liquid Side: Ø 9.52 (ø 3/8")
Inverter R410A:
Max. Height Variation
m(ft) m(ft)
30 (98ft) 20 (66ft)
30 (98ft) 20 (66ft)
30 (98ft) 20 (66ft)
50 (164ft) 25 (82ft)
65 (213ft) 30 (98ft)
65 (213ft) 30 (98ft)
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