8
ADDITIONAL CHARGE
The refrigerant is pre-charged in the outdoor unit. If the piping length is less than 5 m, additional charge after vacuuming is not
necessary. When the piping length is more than 5 m, use the table below.
Additional Charge Operation
This operation must be done by using gas cylinder and a precise weighing machine obligatorily. The additional charge is top up into
the outdoor unit by suction valve via service port.
• Remove the service valve plug.
• Connect the low pressure manifold to the suction service port, center manifold to the cylinder tank and close the high pressure
manifold (see figure below).
Purge all the flexible hose with refrigerant gas.
• Start the air conditioner unit.
• Open the gas cylinder and low pressure manifold valve.
• When the required refrigerant quantity is pumped in the unit, close the low pressure manifold and the gas cylinder valve.
• Disconnect the manometer and the gas cylinder. Place back the service port cap.
Indoor
FDYM30CV1M
FDYM40CV1M
FDYM60CV1M
FDYM71CV1M
FDYM80CV1M
FDYB30CV1M
FDYB40CV1M
FDYB60CV1M
FDYB71CV1M
Outdoor
RY30CV1M
RY40CV1M
RY60CV1M
RY71CV1M
RY80CV1M
Additional
23
23
22
56
56
Charge (g/m)
Additional Charge
Indoor
FDYM90CV1M
FDYM100CV1M
FDYM1250CV1M
FDYM140CV1M
FDYM160CV1M
FDYB90CV1M
FDYB1250CV1M
FDYB140CV1M
FDYB160CV1M
Outdoor
RY90CV1M
RY100CV1M
RY125CV1M
RY90CY1M
RY125CY1M
RY140CY1M
RY160CY1M
Additional
55
57
56
56
106
Charge (g/m)
Refrigerant Gas Tank
Flexible Hose
High Pressure Gauge
Manifold
Low Side
Pressure Gauge
Gas Valve
Refrigerant Piping
Indoor Unit
Outdoor Unit
Liquid Valve
Check Refrigerant Leak
Check with refrigerant detector whether there is a leak on the flare type connection of the indoor unit and outdoor unit.
Hints: After operation for sometime, check if there is oil traces, there is a leak.
Heat Pump Unit
E.g.
FDYM30CV1M & RY30CV1M with 12m piping length, additional piping length is 4.4m. Thus,
Additional charge = 4.4[m] x 23[g/m]
= 101.2 [g]
