Charging Refrigerant - Daikin RP71L7V1 Installation Instructions Manual

C
HARGING REFRIGERANT
Precaution for servicing
When performing service on the unit requiring the
refrigerant system to be opened, refrigerant must be
evacuated according to local regulations.
This unit requires additional charging of refrigerant according to the
length of pipe connected at the site. Charge the refrigerant to the
liquid pipe in its liquid state. Since R-407C is a mixed refrigerant, its
composition changes if charged in a state of gas and normal system
operation would no longer be assured.
On this model it is not necessary to charge additionaly if the piping
length ≤30 m.
On twin/triple application, piping length means sum of
main pipe and branch pipe.
Piping length is the 1 way length, gas or liquid.
Over 30 m or for complete recharging, please charge based as
shown in figure 2, figure 3 and
respectively L1, L1+L2+L3 and L1+L2+L3+L4.
Additional charging of refrigerant
Over 30 m please, add refrigerant quantity according to following
table.
For future servicing, mark with a circle the selected amount on the
tables below
For pair system
Table 1 Additional charging amount <unit: kg>
Model Connected piping length is between
Class 30-40m
71 +0.50
H/P
100-125 +0.75
C/O 71-100-125 +0.25
For twin/triple system
Please charge additionaly according to the following calculation.
(additional amount is R1+R2)
1. G1: total length of 9.5 mm liquid piping
Ø
G2: total length of Ø 6.4 mm liquid piping
2.a G1>30 m
calculate length over 30 m (=G1–30 m)
Based on this length decide R1, R2 in the table
b G≤30 m and G1+G2>30 m
calculate total length over
Based on this decide R2 in the table, R1=0
3. Total additional charge amount
R=R1+R2 (kg)
Table 2 Length <unit: m>, additional charging amount <unit: kg>
Model
Class
Piping Ø
71 9.5
Main
100-125 9.5
H/P 71 9.5
100-125 Branch 9.5
71-100-125 6.4
Main 9.5
C/O 71-100-125 9.5
Branch
6.4
Installation manual
8
figure 4, where the pipe length is
40-50m 50-60m
+1.00 +1.50
+1.50 +2.25
+0.50 +0.75
30
m (=G1+G2–30 m)
Length exceeding 30 m
0-10 10-20 20-30 30-40 40-50
0.50 1.00 1.50 2.00
0.75 1.50 2.25 3.00
0.30 1.00 1.50 2.00
0.75 1.50 2.25 3.00
0.30 0.60 0.90 1.20
0.25 0.50 0.75 1.00
0.25 0.50 0.75 1.00
0.15 0.30 0.45 0.60
Example 1
100 type
outdoor heat pump
1 G1=L1+L2=35+7=42 m
2 Over
a G1
b G2=5 m
3 Refrigerant charge amount=R=R1+R2=1.50+0.30=1.80 kg
Example 2
125 type
outdoor heat pump
1 G1=L1=5 m
2 Over
a G1=5 m
b (G1+G2)
3 Refrigerant charge amount=R=R1+R2=0.0+0.9=0.9 kg
In case of complete recharge of the refrigerant, please first
execute vacuuming. Execute this vacuuming from the
service port. Do not use the port of the stop valve for
vacuuming. Vacuuming can not be executed completely
60-70m
using such port.
+2.00
Position of service port:
+3.00
+1.00
Complete charging of the refrigerant (after a leak,
etc.)
When the entire refrigerant pipe length is within 30 meters, charge
the refrigerant in accordance with the amount mentioned in the
nameplate, and when the pipe length exceeds 30 meters, the
charging amount mentioned in the nameplate and that required for
additional charging are to be totalled as the net charging amount.
2.50
R1
3.75
2.50
R1
3.75
1.50 R2
1.25
R1
1.25
0.75 R2
L2=7 (Ø9.5)
L1=35 (Ø9.5)
L3=5 (Ø6.4)
G2=L3=5
30
m
– 30=12 m Ø9.5 R1=1.50 kg
Ø6.4 R2=0.30 kg
L2=17 (Ø6.4)
L1=5 (Ø9.5) L3=17 (Ø6.4)
L4=20 (Ø6.4)
G2=L2+L3+L4=17+17+20=54
30 m
R1=0.0 kg
– –
30=(5+54) 30=29 Ø6.4 R2=0.90 kg
Heat pump: Heat pump units have 2 ports on the
piping. One between the liquid receiver and the 4-way
valve and another one between the heat exchanger
and the 4-way valve.
Cooling only: On the discharge pipe
71 type
indoor
35 type
45 type
indoor
45 type
indoor
45 type
R(Y)P71~125L7V1+W1
Split System air conditioners
4PW14486-1B