Hitachi RPI-2.0FSN1E - Additional Refrigerant Charge Calculation

21
PMGB0126A rev.2 - 11/2006
English
REFRIGERANT PIPING &
REFRIGERANT CHARGE
11.5. ADDITIONAL REFRIGERANT CHARGE CALCULATION FOR LIQUID PIPING (W1 KG).
See the examples and fill in the following tables:
Single system
Model
Indoor Unit
RCI-5.0FSN1E
RPI-5.0FSN1E
RPC-5.0FSNE
RCD-5.0FSNE
RPI-10.0FSNE
Outdoor Unit RASC-5HNE RASC-10HNE
Actual total Piping Length (m) 0-50 0-30
Piping size for gas line
Out. Dia. (mm) 15.88 25.40
Thickness (mm) 1.0 1.0
Piping size Liquid Line
Out. Dia. (mm) 9.53 12.7
Thickness (mm) 0.8 1.0
Factory charged
Quantity in Outdoor unit (Kg)
4.8 8.5
Additional Charging Quantity for more than 10m 70 g/m 120 g/m
Twin sample
Pipe
Diameter
Total Piping
Length
Additional Charge (Kg)
Ø 9.53 10+10+30x 0.070 = 3.50
10 m Factory Charge W (10m) = -0.70
Example Additional Charge W1 Total = 2.80 (Kg)
Triple sample
Pipe
Diameter
Total Piping
Length
Additional Charge (Kg)
Ø 12.7 15x 0.120 = 1.80
Ø 9.53 3+3+6 x 0.070 = 0.84
10 m Factory Charge W (10m) = -1.20
Example Additional Charge W1 Total = 1.44 (Kg)
Quad sample
Pipe
Diameter
Total Piping
Length
Additional Charge (Kg)
Ø 12.7 15 x 0.120 = 1.80
Ø 9.53 10+8+12+10 x 0.070 = 2.80
10 m Factory Charge W (10m) = -1.20
Example
Additional
Charge
W1 Total = 3.40 (Kg)
•
■
■
■
■
RASC-5/10
Total Additional Charge W1: 2.80 Kg
Outdoor Unit Factory Charge Wo:
4.80 Kg
Total Ref. Charge of this System:
7.60 Kg
Year
Month Day
9.53
9.53
9.53
RASC-5
12.70
9.53
9.53
9.53
Total Additional Charge W1: 1.44 Kg
Outdoor Unit Factory Charge Wo:
8.50 Kg
Total Ref. Charge of this System:
9.94 Kg
Year
Month Day
RASC-10
12.70
9.53
9.53
9.53
9.53
Total Additional Charge W1: 3.40 Kg
Outdoor Unit Factory Charge Wo:
8.50 Kg
Total Ref. Charge of this System: 11.90
Kg
Year
Month Day
RASC-10