Gree GMV-S120WL/A-S Manuel Du Propriétaire page 24

4.5.2 Refrigerant Adding
(1) Refrigerant quantity of outdoor unit before delivery:
Model
Refrigerant quantity
(kg)
NOTES!
①The refrigerant quantity charged before delivery doesn't include the quantity that needs to be added
to indoor units, hydro box ,hot water converter and the connection pipeline.
②Length of connection pipe is decided on site. Therefore the additional quantity of refrigerant shall be
decided on site according to the dimension and length of field-installed liquid pipe.
③Record the additional quantity of refrigerant for convenience of after-sales service.
(2) Calculation of the additional quantity of refrigerant
Additional quantity of refrigerant = additional quantity for liquid pipe + additional quantity for hydro box +
additional quantity for hot water converter + additional quantity for high pressure gas pipe
1）Calculation method of the additional quantity of refrigerant (based on liquid pipe)
Additional quantity of refrigerant for liquid pipe (kg) = ∑length of liquid pipe X additional quantity of
refrigerant per meter
Φ28.6 Φ25.4
0.680 0.520
NOTE!
Liquid pipe includes "liquid pipe connecting outdoor unit with indoor unit and hydro box or hot water
converter" ,"liquid pipe connecting hot water converter with water tank".
If the liquid pipe of side discharge unit is within 20m, there is no need to add refrigerant.
2）Additional quantity of refrigerant for hydro box and hot water converter (kg):
Additional quantity of refrigerant for hydro box and hot water converter = 0.3*(number of hydro box+
number of hot water converter)
3）Additional quantity of refrigerant for high pressure gas pipe (kg):
Additional quantity of refrigerant for high pressure gas = length of high pressure gas pipe × additional
quantity of refrigerant for high pressure gas pipe per meter
Φ19
0.15
First confirm that there is no leakage from the system. When compressor is not working, charge
additional R410a with specific quantity to the unit through the filling opening of the liquid pipe valve of the
outdoor unit. If required quantity cannot be quickly filled due to pressure increase of the pipe, then set the unit
in cooling startup status and fill refrigerant from the low pressure check valve of the outdoor unit.
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GMV-S120WL/A-S
5.0
Additional quantity of refrigerant for liquid pipe (kg/m)
Φ22.2 Φ19
0.350 0.250
Additional quantity for high pressure gas pipe (kg/m)
Φ16
0.12
19
GMV-S140WL/A-S
5.0
Φ16 Φ12.7
0.170 0.110
Φ12.7
0.09
GMV-S160WL/A-S
5.0
Φ9.52 Φ6.35
0.054 0.022
Φ9.52
0.05