26
Installation Inspection and Testing
English
Installation
Step 4-4 Adding refrigerant (if needed)
The outdoor unit is charged with sufficient R-32 refrigerant to
support up to a 5 m line set. For lengths greater than 5 m,
you must add 15 g of refrigerant per meter of additional
length, after the lines are evacuated.
1 Calculate the additional refrigerant required:
Additional grams of R-32 = (Total line set meter − 5) × 15
2 Connect the common hose of the manifold gauge set to
the inverted R-32 refrigerant cylinder.
3 Place the refrigerant cylinder on a scale set to measure
grams.
4 Open the valve on the tank.
5 At the manifold connection, bleed the refrigerant to
remove any air that may be present in the common hose.
6 Open the gauge manifold and charge the system with the
amount of refrigerant calculated in step 1.
7 Close the gauge manifold valve, close the valve on the
refrigerant tank, and remove the common hose.
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 4-5 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 tCO₂e 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,
‐ the additional refrigerant amount charged in
the field and
‐ + the total refrigerant charge. on the
refrigerant charge label supplied with the product.
Refrigerant type GWP value
R-32 675
• GWP: Global Warming Potential
• Calculating tCO₂e: kg x GWP/1000
Indoor unit
Outdoor unit
Unit Kg tCO₂e
①, a
②, b
①+②, c
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