R410A All DC Inverter V5 X Series 50Hz MCAC-VTSM-2015-10
124 Installation
2. Inspection list of trial run:
1) Confirm the fan impeller is rotating according to its intended route and turns smoothly. No abnormal
vibration and noise.
2) Check for abnormal noise during operation of refrigerant system and compressor.
3) Confirm outdoor unit can detect each indoor unit.
4) Confirm drainage is smooth and its lift pump is operational.
5) Confirm microcomputer controller is operating normally and no warning indicators have been activated.
6) Confirm operating current is within the allowed range.
7) Confirm each operating parameter is within the range permitted by the equipment.
Note: When conducting trial run, separately test cooling mode and heating mode to judge the stability and
reliability of system.
14.3.2 Commissioning for the trial run of multiple outdoor units
1. Confirm operation of single unit is normal through trial operation. After confirming it is normal, conduct
operation of the whole system.
2. Commissioning is carried out according to the Technical Requirement of Product. When Commissioning,
analyze and record operation status so as to understand the operation status of the whole system for
convenient maintenance and inspection.
3. After finishing Commissioning, fill out Commissioning report in detail.
14.4 Fill the name of connected system
To clearly identify the connected systems among two or more indoor units and outdoor units, select names for
every system and record them on the nameplate on the outdoor electric control box cover.
14.5 Refrigerant leakage caution
This air conditioner adopts R410A as refrigerant, which is safe and noncombustible.
Air conditioned rooms should be large enough that if leakage occurs critical levels will not be reached, and
time for protective measure can be ensured.
R410A critical thickness: 0.3 kg/m
3
, (Critical thickness: the max thickness of Freon without any harm to
person)
Calculate the critical thickness through following steps, and take necessary actions.
1. Calculate the refrigerant charge A
Model(indoor unit)
Room Name
Eg: Indoor unit (A) of the
first system on second floor
is recorded as:-2F-1A
Outdoor unit
Indoor unit
Room full of leaking refrigerant
(All the refrigerant has leaked)
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