Check Items After Installation And Test Operation; Check Items After Installation; Trial Operation - Gree GMV-Q224WM/B-X Owner's Manual

Heat Recovery DC Inverter Multi VRF Unit
refer to sections of combination of units.
5

Check Items after Installation and Test Operation

5.1

Check Items after Installation

Check items
Each part of the unit is installed securely?
Gas leakage test is taken or not?
Unit gets proper thermal insulation or not?
Drainage is smooth or not?
Is the voltage in accordance with the rated voltage
specified on the nameplate?
Is the electric wiring and pipe connection installed
correctly?
Unit is securely grounded or not?
Power cord meets the required specification?
Is the air inlet/outlet blocked?
Length of refrigerant pipe and the charging amount
of refrigerant are recorded or not?
Is the address code of outdoor modules and the
code of module quantity correct?
Is the address code of indoor units and wired
controller correct?
Has the communication line been connected
correctly?
Is the piping connection and valve status correct?
Is the phase sequence of external power cord
correct?

5.2 Trial Operation

Note: Set only one module as the master module during debugging;
Set only one indoor unit as the master indoor unit during debugging;
If there is no special requirement, do not need to set other functions and just operate the unit in
ex-factory setting; if special functions are needed, please refer to the service manual o r debugging
maintenance manual.
5.2.1 Preparation before trial operation
（1）The power supply should be turned on only after finishing all the installation.
（2）All the control wires and cables are connected correctly and safely. Completely open the gas
valve and and liquid valve.
（3）All the objects like metal filing, thrum and clip should be cleared after installation.
（4）Check if the unit appearance and piping system is damaged or not due to transportation.
（5） Check if the terminals of electrical element are loose and the phase sequence is correct or not.
（6）Check the valve: For single-module unit, fully open the gas valve and liquid valve and close oil
balance valve; for dual/three module unit, fully open the gas valve, liquid valve and oil balance
valve.
Possible conditions due to improper installation
Unit may drop, shake or emit noise
Insufficient cooling (heating) capacity
There may be condensation and dripping.
There may be condensation and dripping.
Unit may have malfunction or components may
get damaged.
Unit may have malfunction or components may
get damaged.
Electrical leakage
Unit may have malfunction or components may
get damaged.
Insufficient cooling (heating) capacity
The refrigerant charging amount is not accurate.
The unit cannot run normally. Communication
malfunction might happen.
The unit cannot run normally. Communication
malfunction might happen.
The unit cannot run normally. Communication
malfunction might happen.
The unit cannot run normally. The unit might be
damaged.
The unit cannot run normally. Phase sequence
error may happen.
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Check