Running Test; Inspection And Confirmation Before Commissioning; Preparation Before Debugging; Commissioning Of Trial Run - Midea V5 X VRF Series Technical & Service Manual

MCAC-VTSM-2015-10

14. Running test

14.1 Inspection and confirmation before commissioning

 Confirm that refrigeration piping and communication wire of indoor and outdoor units have been connected
to the same refrigeration system in order avoid unnecessary malfunctions..
 Confirm power voltage is within ± 10% rated voltage.
 Confirm that the power wire and control wire are correctly connected.
 Confirm wire controller is properly connected.
 Before powering on, confirm there is no short circuiting.
 Confirm all units have passed nitrogen pressure-keeping test for 24 hours with R410A: 40kg/cm
 Confirm the system has been carried out vacuum drying and charged with refrigeration as required.

14.2 Preparation before debugging

 Calculate the additional refrigerant quantity for each set of unit according to the actual length of liquid pipe.
 Keep required refrigerant ready.
 Keep system scheme, system piping diagram and control wiring diagram ready.
 Record the setting address code on the system scheme.
 Turn on power switches of outdoor unit in advance, and keep connected for a minimum of 12 hours to
ensure refrigerant oil is sufficiently heated.
 Turn on all valves. If valves are not fully open unit may be damaged.
 Confirm the power phase sequence of outdoor unit is correct.
 All dial switches of indoor and outdoor units have been set according to the products technical requirements.
Note: The outdoor unit dial switch setting should be conducted before unit is powered up, otherwise the unit
cannot be identified. The following table shows the address and power of outdoor master and slave unit:
ADDRESS dial switch
0
1
2
3
≥4

14.3 Commissioning of Trial Run

14.3.1 Commissioning for trial run of single outdoor unit.
1. Each independent refrigeration system (i.e. each outdoor unit) should be given a trial run..
Installation
Master unit
Salve unit 1
Salve unit 2
Salve unit 3
Invalid address, system error
/
/
R410A All DC Inverter V5 X Series 50Hz
POWER dial switch
0
1
2
3
4
5
≥6
Invalid dial switch
2
.
8HP
10HP
12HP
14HP
16HP
18HP
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