• 70 •
Installation manual /
eCOMFORT R32-MIL166E-0222 - 09/2022
WARNING:
Air/refrigerant mixture R32 in a potentially flammable atmosphere: Fire hazard. Use only filling
equipment designed and approved for use and operation with A2L refrigerant. Make sure all connections are tight to
prevent leaks and fill with pure A2L refrigerant.
CAUTION:
Vacuum operation: Damage to the compressor. Compressor operation outside the operating range is
not allowed.
COMMISSIONING
Once the above points have been verified, the unit can be started up taking into account the following points:
1.- Adjust the control for the desired operating mode of the unit.
2.- Check the perfect operation of the compressor.
- These compressors will only compress in one direction of rotation. Observing that the suction pressure drops and the discharge pressure
rises when the compressor is energized allows verification of the proper direction of rotation.
- Occasionally, during starts and stops, a characteristic metallic noise is produced when the compressor spirals come into contact.
- When shutdown occurs, scroll compressors incorporate a device that minimizes reverse rotation. Residual momentary reversal of the rolls
at power off could cause a clicking sound. It is completely normal and has no effect on your durability.
3.- Check the oil level in the compressor, if it includes a sight glass, (when the compressor stops, the level must be between 1/4 and 3/4 of
the sight glass, while during operation, the level must be between 3/4 and full viewfinder). If you have to add oil, remember that it must be
compatible with the one included in the compressor.
- It is recommended that the oil level should be kept at the midpoint of the sight glass.
4.- Check that the operating pressure values are normal.
5.- Measure the electrical consumption of the unit.
6.- Check the electrical consumption of the compressor and the fans as specified in this manual.
7.- If the unit is a Heat Pump, change the cycle, checking that the 4-way valve makes the change correctly. It is recommended to check
pressures in the new cycle.
Always check before starting the unit that the three-phase compressor rotates correctly by means of a phase detector. Scroll
type compressors only compress in one direction of rotation. It is essential that the connection of phases in three-phase
compressors, SCROLL type, is carried out properly (it is verified that the direction of rotation is correct when the suction
pressure decreases and the discharge pressure increases when the compressor is activated. If the connection is incorrect ,
rotation will be reversed, causing a high noise level and reduced current consumption, and if this occurs, the internal protection
of the compressor will be activated, stopping it; this is solved by disconnecting and reconnecting, exchanging the connection
of two of the three phases).
3.1.- STEPS TO FOLLOW FOR COMMISSIONING THE UNITS
11.- In case it is necessary to charge the unit with refrigerant, the following recommendations must be followed:
- Before charging or recharging, the system must be leak tested and pressure tested with the appropriate purge gas.
- Make sure that the refrigerant circuit is grounded before loading it with refrigerant.
- The system will be charged with liquid through the liquid receiver shutoff valve or through a valve in the liquid line. The use of
a filter drier in the charging line is strongly recommended. Since scroll compressors have discharge check valves, the systems
will be charged with liquid on the high and low sides simultaneously to ensure there is positive refrigerant pressure in the
compressor before it runs.
- Extreme care must be taken not to overfill the system with refrigerant. The manufacturer/installer of the system must respect
he load limitations according to current standards, such as EN 378-2.
WARNING:
Vacuum operation: Fire hazard. During vacuum operation, a flammable atmosphere can form inside
the system. Extreme attention must be paid to the tightness of the system. Prevent ambient air from entering the
system.
12.- In the event that it is necessary to empty the refrigerant unit, the recommendations described above must be followed.
REMEMBER THAT THE COMPRESSOR IS A SCROLL TYPE COMPRESSOR
3.- COMMISSIONING AND OPERATION
Summary of Contents for eCOMFORT R32 GAC 035S
Page 2: ......
Page 86: ...84 Installation manual eCOMFORT R32 MIL166E 0222 09 2022 NOTES...
Page 87: ......