Midea VRF V4 Plus I Series User Manual

MCAC-VTSM-2014-04 R410A DC Inverter VRF V4 Plus Individual Series 50Hz
Selection Procedure 61
2. Unit selection (based on cooling load)
2.1 Given condition
Condition:
Cooling: indoor temperature 20
o
CWB, outdoor temperature 35
o
CDB;
Cooling load
Location
Room A
Room B
Room C
Room D
Room E
Room F
Room G
Room H
Load (kW)
5.9
5.8
7.5
7.3
7.9
5.5
4.5
7.8
Power supply: outdoor 380~415V-3Ph-50Hz, indoor 220~240V-1Ph-50Hz.
Piping length: 50m; Height difference between indoor unit and outdoor unit: 30m
2.2 Indoor unit selection
Select the suitable capacity for condition of ‘Indoor 20°C (WB), Outdoor 35°C (DB)’ using indoor unit capacity
table. The selected result is as follows. (Assuming the indoor unit type is duct)
Location
Room A
Room B
Room C
Room D
Room E
Room F
Room G
Room H
Load (kW)
5.9
5.8
7.5
7.3
7.9
5.5
4.5
7.8
Unit size
56
56
71
71
80
56
45
80
Capacity (kW)
5.9
5.9
7.5
7.5
8.4
5.9
4.8
8.4
2.3 Outdoor unit selection
1) Assume the indoor unit and outdoor unit combination as follows
 Calculate the total nominal capacity of indoor units in the combination according to the above table:
5.6×3+7.1×2+8.0×2+4.5×1=51.5kW
 Select outdoor unit: MDV-560W/DRN1-i(C) which has nominal cooling capacity: 56kW.
Calculate the proportion between ① and ②: 51.5/56=92%
2) Result: Because the proportion is within 50～130%, it is a right selection.
Real function data with indoor unit combination
 For the 92% combination, calculate the cooling capacity of outdoor unit (MDV-560W/DRN1-i(C)).
53.6KW←90% (Indoor temperature: WB 20°C, Outdoor temperature: DB 35°C)
56.6KW←100% (Indoor temperature: WB 20°C, Outdoor temperature: DB 35°C)
Then calculated the outdoor capacity in 92% combination index:
Therefore: 53.6+{(56.6-53.6)/ 10}×2= 54.2;
 Outdoor unit (MDV-560W/DRN1-i(C)) cooling temperature: DB 35°C
 Capacity modification coefficient with pipe length (50m) and height difference (30m): 0.958
 Each indoor unit cooling capacity
Room A: MDV-D56T2 (54.2×56/522×0.958=5.57kW)
Room B: MDV-D56T2 (54.2×56/522×0.958=5.57kW)
Room C: MDV-D71T2 (54.2×71/522×0.958=7.06kW)
Room D: MDV-D71T2 (54.2×71/522×0.958=7.06kW)
Room E: MDV-D80T2 (54.2×80/522×0.958=7.96kW)
Room F: MDV-D56T2 (54.2×56/522×0.958=5.57kW)
Room G: MDV-D45T2 (54.2×45/522×0.958=4.48kW)
Room H: MDV-D80T2 (54.2×80/522×0.958=7.96kW)
Location
Room A
Room B
Room C
Room D
Room E
Room F
Room G
Room H
Load (kW)
5.9
5.8
7.5
7.3
7.9
5.5
4.5
7.8
Unit size
56
56
71
71
80
56
45
80
Capacity (kW)
5.57
5.57
7.06
7.06
7.96
5.57
4.48
7.96

Midea VRF V4 Plus I Series Specifications

General

Brand	Midea
Model	VRF V4 Plus I Series
Category	Air Conditioner
Language	English