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14
GB
10. Additional refrigerant charge
At the time of shipping, the outdoor unit is charged with refrigerant.
This charge does not include the amount needed for extended piping and
additional charging of each refrigerant line will be required on site. In order that
future servicing may be properly provided, always keep a record of the size and
length of each refrigerant line and the amount of additional charge by writing it in
the space provided on the outdoor unit.
10.1. Calculation of additional refrigerant
charge
•
Calculate the amount of additional charge based on the length of the piping
extension and the size of the refrigerant line.
•
Use the table below as a guide for calculating the amount of additional
charging and then charge the system accordingly.
•
If the calculation results in a fraction of less than 0.1 kg, round up to the next
0.1 kg. For example, if the result of the calculation was 12.38 kg, round the
result up to 12.4 kg.
<Additional charge>
Additional
refrigerant charge
=
Total length of
liquid pipe sized
ø19.05 mm
+
Total length of
liquid pipe sized
ø15.88 mm
+
Total length of
liquid pipe sized
ø12.7 mm
(kg) [oz]
(m) × 0.29 (kg/m)
(m) × 0.2 (kg/m)
(m) × 0.12 (kg/m)
+
Total length of
liquid pipe sized
ø9.52 mm
+
Total length of
liquid pipe sized
ø6.35 mm
(m) × 0.06 (kg/m)
(m) × 0.024 (kg/m)
+
Additional charge
+
α
Outdoor unit model
Charged amount
P200
-
P250
-
P300
-
P350
-
P400
-
P450
-
P500
6.0 kg
<Example>
Indoor
1: 125 A : ø12.7 mm
40 m
a : ø9.52 mm
10 m
2: 100 B : ø9.52 mm
10 m
b : ø9.52 mm
5 m
3: 40
C : ø9.52 mm
15 m
c : ø6.35 mm
10 m
4: 32
D : ø9.52 mm
10 m
d : ø6.35 mm
10 m
5: 64
e : ø9.52 mm
10 m
The total length of each liquid line is as follows:
ø12.7 mm: A = 40 m = 40 m
ø9.52 mm: B + C + D + a + b + e
= 10 m + 15 m + 10 m + 10 m + 5 m + 10 m = 60 m
ø6.35 mm: c + d = 10 m + 10 m = 20 m
Therefore,
<Calculation example>
Additional refrigerant charge
= 40 m
×
0.12 kg/m + 60 m
×
0.06 kg/m + 20 m
×
0.024 kg/m + 3.5 kg
= 12.4 kg
*When connecting one or more PEFY-P20VMA3-E units, add 0.54 kg of
refrigerant for each of these units.
Value of
α
Total capacity of connecting indoor units
α
Models
~ 80
2.0 kg
Models 81 ~ 160
2.5 kg
Models 161 ~ 330
3.0 kg
Models 331 ~ 390
3.5 kg
Models 391 ~ 480
4.5 kg
Models 481 ~ 630
5.0 kg
Models 631 ~ 710
6.0 kg
Models 711 ~ 800
8.0 kg
Models 801 ~ 890
9.0 kg
Models 891 ~ 1070
10.0 kg
Models 1071 ~ 1250
12.0 kg
Models 1251 ~
14.0 kg
<Amount of factory charged refrigerant>
Outdoor unit model
Charged amount
P200
5.5 kg
P250
6.5 kg
P300
6.5 kg
P350
11.5 kg
P400
11.5 kg
P450
11.5 kg
P500
11.8 kg
At the
conditions
below:
A
Downward slope
B
Upward slope
C
Indoor unit
D
Trap (gas pipe only)
E
Within 2 m
F
Twinning pipe
G
Slope of the twinning pipes are at an angle within ±15˚ to the ground
H
Pipes on site
I
Twinning Kit
J
Straight run of pipe that is 500 mm or more
<C> Slope of twinning pipes
Make sure the slope of the twinning pipes are at an angle within ±15˚ to the ground.
If the slope exceeds the specified angle, the unit may be damaged.
±15
°
G
F
<D> Pipe connection example
H
H
I
J