Midea ATOM B Series Service Manual page 7

Atom B Series VRF 50/60Hz
3 Combination Ratio
Combination ratio =
Table 1-3.1: Indoor and outdoor unit combination ratio limitations
Atom Series outdoor units
Table 1-3.2: Combinations of Indoor and outdoor units
Outdoor unit capacity
6
Sum of capacity indexes of the indoor units
Capacity index of the outdoor unit
Type Minimum combination ratio
Sum of capacity indexes of
Capacity connected indoor units (standard
kBtu/h
index
28 28
36 36
42 42
48 48
56 56
60 60
Maximum combination ratio
45%
Number of connected
indoor units only)
12.6 to 36.4
16.2 to 46.8
18.9 to 54.6
21.6 to 62.4
25.2 to 72.8
27.0 to 78.0
130%
indoor units
1-4
1-6
1-7
1-8
1-9
1-9