R410A All DC Inverter Mini VRF MCAC-VTSM-2014-09
Installation 60
Table4: Outdoor unit pipe connection
Piping side
MODEL
Outdoor unit pipe connection (mm)
Gas Side
Liquid Side
10.5kW
Φ5/8(Φ15.9)
Φ3/8(Φ9.53)
12kW
Φ5/8(Φ15.9)
Φ3/8(Φ9.53)
14kW
Φ5/8(Φ15.9)
Φ3/8(Φ9.53)
16kW
Φ3/4(Φ19.1)
Φ3/8(Φ9.53)
Outdoor Unit
(kW)
Maximum Quantity of
Indoor unit
Total Capacity of Indoor unit
10.5
5
45%~130%
12
6
45%~130%
14
6
45%~130%
16
7
45%~130%
If ODU connect only one IDU, the capacity of IDU should be not more than ODU.
If ODU connect more than one IDU, the capacity of each IDU should be not more than 8kW for refrigerant
uniform distribution.
When capacity of indoor unit greater than the sum of 100%, capacity of indoor unit will be attenuated.
When capacity of indoor unit greater than or equal to the sum of 120%, in order to ensure the effectiveness of
machine, and then try to open the indoor units at different time.
When the capacity of indoor unit is greater than or equal to 16.8kW, the caliber of primary gas pipe should be
augmented from Φ16 toΦ19.
4.4 Remove Dirt or Water in the Piping
Make sure there is no any dirt or water before connecting the piping to the outdoor units.
Wash the piping with high pressure nitrogen, never use refrigerant of outdoor unit.
4.5 Airtight Test
Charge pressured nitrogen after connecting indoor/outdoor unit piping to do airtight test.
Cautions:
1.
Pressured nitrogen [4.3MPa (44kg/cm
3
) for R410A] should be used in the airtight test.
2.
Tighten high pressure/low pressure valves before applying pressured nitrogen.
3.
Apply pressure from air vent mouth on the high pressure/low pressure valves.
4.
The high pressure/low pressure valves are closed when applying pressured nitrogen.
5.
The airtight test should never be used any oxygen, flammable gas or poisonous gas.
4.6 Vacuum
Using vacuum pump to do the vacuum and never using refrigerant to expel the air.
Vacuum should be done from both liquid side and gas side simultaneously.
4.7 Additional refrigerant charge
Calculate the added refrigerant according to the diameter and the length of the liquid side pipe of the outdoor
unit/indoor unit connection.
When the outdoor unit connects one indoor unit:
Liquid Side Piping Diameter
Refrigerant to be Added Perimeter Piping
Φ1/4(Φ6.35)
0.05lbs.(0.023kg)
Φ3/8(Φ9.53)
0.13lbs.(0.060kg)
Φ1/2(Φ12.7)
0.26lbs(0.120kg)
Φ5/8(Φ15.9)
0.39lbs(0.180kg)
Φ3/4(Φ19.1)
0.59lbs(0.270kg)
Φ7/8(Φ22.2)
0.84lbs(0.380kg)
Note: Additional refrigerant volume of divergent pipe is 0.1kg per item (Consider the liquid side of branch pipe only).
Содержание MDV-V105W/DVN1
Страница 2: ......
Страница 18: ...R410A All DC Inverter Mini VRF MCAC VTSM 2014 09 16 Specifications Performance 5 Wiring Diagrams For 10 5kW...
Страница 19: ...MCAC VTSM 2014 09 R410A All DC Inverter Mini VRF Specifications Performance 17 For 12 14 16kW...
Страница 20: ...R410A All DC Inverter Mini VRF MCAC VTSM 2014 09 18 Specifications Performance 6 Field Wiring...