21
English
Installation
3 Open the valve of the low pressure side of
manifold gauge anticlockwise.
4 Evacuate the air in the connected pipes using the
vacuum pump for about 15 minutes.
• Make sure that pressure gauge shows -0.1 MPa
(-76 cmHg, 5 torr) after about 10 minutes. This
procedure is very important to avoid a gas leak.
• Close the valve of the low pressure side of
manifold gauge clockwise.
• Turn off the vacuum pump.
• Check for 2 minutes if there is any pressure
change.
• Remove the hose of the low pressure side of
manifold gauge.
5 Set a valve cork of liquid and gas service port to
the open position.
Step 3.4 Adding refrigerant
If you use a pipe longer than 5m, you must add 15 g
of refrigerant R-32 for each extra meter. If you use a
pipe shorter than 5m, the evacuating time is normal.
Refer to the Service Manual for further details.
CAUTION
• The remaining air in the Refrigeration cycle, which
contains moisture, may cause malfunction on the
compressor.
• Always contact the service centre or a professional
installation agency for product installation.
Precautions on adding the R-32 refrigerant
In addition to the conventional charging procedure, the
following requirements shall be kept.
• Make sure that contamination by other refrigerants
does not occur for charging.
• To minimize the amount of refrigerant, keep the
hoses and lines as short as possible.
• The cylinders shall be kept upright.
• Make sure that the refrigeration system is earthed
before charging.
• Label the system after charging, if necessary.
• Extreme care is required not to overcharge the
system.
• Before recharging, the pressure shall be checked
with nitrogen blowing.
• After charging, check for leakage before
commissioning.
• Be sure to check for leakage before leaving the work
area.
Step 3.5 Important information:
regulation regarding the refrigerant
used
This product contains fluorinated greenhouse gases.
Do not vent gases into the atmosphere.
CAUTION
• Inform user if the system contains 5 tCO
2
e or
more of fluorinated greenhouse gases. In this
case, it must be checked for leakage at least
once every 12 months, according to regulation
No. 517/2014. This activity must be covered
by qualified personnel only. In the case of the
situation above, the installer (or authorized
person with responsibility for final check)
must provide a maintenance book, with all the
information recorded, according to REGULATION
(EU) No. 517/2014 OF THE EUROPEAN
PARLIAMENT AND OF THE COUNCIL of 16 April
2014 on fluorinated greenhouse gases.
1 Please fill in the following with indelible ink on
the refrigerant charge label supplied with this
product and on this manual.
• the factory refrigerant charge of the
product,
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