AIREDALE EasiCool Technical Manual page 46

EasiCool™
Installation
Calculation of System Refrigerant Charge (kg)
The system refrigerant charge can be calculated using the following equation:
SR = LR + IR + OR
Calculation of Liquid Line Refrigerant Charge (kg)
The liquid line refrigerant charge can be calculated using the following equation:
LR = L x m
Example
Indoor Unit Model Ref.
Outdoor Unit Model Ref = CR16 Condenser
Interconnecting Pipework = 10 metres
From the Refrigerant Pipe Sizing Guide, the
liquid line size given for pipework length of 10
metres is:0.05kg/m
System Refrigerant Charge
SR = LR + IR + OR
Where:
46 EasiCool Technical Manual 7525389 V1.8.0_05_2016
Where:
SR = Total System Refrigerant Charge (kg)
LR = Total Liquid Line Refrigerant Charge. (As calculated from above)
IR = Indoor Unit Refrigerant Charge.
OR = Outdoor Unit Refrigerant Charge.
Where:
LR = Total Liquid Line Refrigerant charge (kg)
L = Length of Interconnecting pipework (metres)
m = Liquid Line Refrigerant charge / metre. Refer to Liquid Line
Refrigerant Charge (kg/m), above.
= DF10X-EZRE
LR = 0.5 kg. (As calculated from above)
IR = 1.0 kg
OR = 2.7 kg
SR = 0.5 + 1.0 + 2.7
Therefore
Precision Air Conditioning
Where:
L
m
LR = L x m LR
= 10 metres
= 0.05 kg/m (Liquid
Line Size = 3/8")
= 10 x 0.05 = 0.5kg
System Refrigerant
Charge
= 4.2 kg / Circuit