Combination Ratio - Midea V8 Series Manual

3.2 Outdoor Units

4 Combination Ratio

Combination ratio =
Table 1-5.1: Indoor and outdoor unit combination ratio limitations
Minimum
Type
combination ratio
V8 Series outdoor
units
Notes:
1. All the indoor units connected should be indoor units with ø5mm size copper tube heater exchanger. This limitation is to avoid too big indoor unit
exchanger cause reliability and performance problem.
2. If all indoor units in system are V8 Series the total combination ratio must not exceed 160%. If there are non V8 series indoor unit in system the total
combination ratio must not exceed 130%
3. Piping between farthest indoor unit and first indoor branch joint should less than 40m.
4. When fresh air processing units are installed together with standard indoor units, the total capacity of the fresh air processing units must not exceed 30%
of the total capacity of the outdoor units and the total combination ratio must not exceed 100%.
M V8 M
① ② ③
Legend
No. Code Remarks
1 M Midea MV8M-120WV2RN1
2 V8 The 8 th
3 M Mini VRF
3 140 Capacity index (the capacity in kW multiplied by 10)
4 W Unit category (W: VRF outdoor unit)
5 V2 Type (V2: All DC inverter)
Power supply
6 omit:220-240V, ~, 50Hz
H:220-240V, 3N~, 50/60Hz
7 N1 Refrigerant type (N1: R410A)
Sum of capacity indexes of the indoor units
Capacity index of the outdoor units
Standard indoor units only
50% 130% 2 or 160%
- 140 W V2
③ ④ ⑤ ⑥
generation VRF
Maximum combination ratio
Fresh air processing
units only
2 100%
V8 Mini R410A VRF 50Hz
N1
⑦
Fresh air processing units and
standard indoor units together
100% 4
11