Additional Charge - Daikin FDYB30CV1M User & Installation Manual

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.

Additional Charge

Heat Pump Unit
Indoor FDYM30CV1M
FDYB30CV1M
Outdoor RY30CV1M
Additional
23
Charge (g/m)
Indoor FDYM90CV1M
FDYB90CV1M
Outdoor RY90CV1M
RY90CY1M
Additional
55
Charge (g/m)
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]
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.
Outdoor Unit
Liquid Valve
ADDITIONAL CHARGE
FDYM40CV1M
FDYB40CV1M
RY40CV1M
23
FDYM100CV1M
RY100CV1M
57
Refrigerant Piping
Low Side
Pressure Gauge
Gas Valve
Manifold
FDYM60CV1M
FDYB60CV1M
RY60CV1M
22
FDYM1250CV1M FDYM140CV1M
FDYB1250CV1M FDYB140CV1M
RY125CV1M
RY125CY1M
56
Indoor Unit
High Pressure Gauge
Flexible Hose
Refrigerant Gas Tank
8
FDYM71CV1M FDYM80CV1M
FDYB71CV1M
RY71CV1M RY80CV1M
56
FDYM160CV1M
FDYB160CV1M
RY140CY1M RY160CY1M
56
56
106