Charging Refrigerant - Daikin RZQ-BW1 Installation Manual

C
HARGING REFRIGERANT
Important information regarding the refrigerant used
This product contains fluorinated greenhouse gases covered by the
Kyoto Protocol. Do not vent gases into the atmosphere.
Refrigerant type: R410A
(1)
GWP value: 1975
(1)
GWP = global warming potential
Please fill in with indelible ink,
the factory refrigerant charge of the product,
the additional refrigerant amount charged in the field and
+ the total refrigerant charge
on the refrigerant charge label supplied with the product.
The filled out label must be adhered in the proximity of the product
charging port (e.g. onto the inside of the service cover).
6 5
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 through the service port of the liquid stop
valve. Since R410A 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 additionally if the piping
length ≤30 m.
<5 m: See "Total charging weight of the refrigerant (after a leak, etc.)"
on page 11.
Additional charging of refrigerant
The additional charging amounts relate to the refrigerant piping
length as in "Maximum total one-way piping length"
in paragraph "Allowable pipe length and height difference" on
page 6. (E.g. twin: L1+L2+L3).
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
RZQ71~140C7V1B + RZQ100~140B8W1B
Split System air conditioners
4PW40417-1
1 factory refrigerant charge
4
of the product:
see unit name plate
1
2 additional refrigerant
amount charged in the
2
field
3 total refrigerant charge
3
4 Contains fluorinated
greenhouse gases
covered by the Kyoto
Protocol
5 outdoor unit
6 refrigerant cylinder and
manifold for charging
of the table
For pair system
Table 1: Additional charging of refrigerant <unit: kg>
Connected piping length is between
Model 30~40 m
RZQ71
0.5
RZQ100~140
Connected piping length is between
Model 15~20 m
RZQ71
0.5
RZQ100~140
For twin, triple, and double twin system
Please charge additional according to the following calculation.
(additional amount is R1+R2)
1. G1: total length of Ø 9.5 mm liquid piping
G2: total length of 6.4 mm liquid piping
Ø
2.a G1>30 m
calculate length over 30 m (=G1–30 m)
Based on this length decide R1, R2 in the table
b G1≤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 of refrigerant
<unit: kg>
Liquid
Model piping Ø
Main
9.5
RZQ71~140 Branch
Branch 6.4
Example 1
L1=35 (Ø9.5)
100 type
outdoor heat pump
1 G1=L1=35 m
30
2 Over m
–
a G1 30=5 m
b G2=12 m
3 Refrigerant charge amount=R=R1+R2=0.5+0.6=1.1 kg
Example 2
L1=5 (Ø9.5)
125 type
outdoor heat pump
1 G1=L1=5 m
30
2 Over m
a G1=5 m
–
b (G1+G2) 30=(5+54)
3 Refrigerant charge amount=R=R1+R2=0.0+0.9=0.9 kg
Standard liquid pipe size
40~50 m 50~60 m 60~75 m
—
1.0
1.5
Size up liquid pipe size
20~25 m 25~30 m 30~35 m
—
1.0
1.5
30 m (=G1+G2–30 m)
Length exceeding "Chargeless length"
0~10 10~20 20~30 30~45
0.5 1.0 1.5 2.0
0.3 0.6 0.9 1.2
L2=7 (Ø6.4)
50 type
indoor
L3=5 (Ø6.4)
50 type
G2=L2+L3=7+5=12
Ø9.5 R1=0.5 kg
Ø6.4 R2=0.6 kg
L2=17 (Ø6.4)
50 type
indoor
L3=17 (Ø6.4)
50 type
indoor
L4=20 (Ø6.4)
50 type
G2=L2+L3+L4=17+17+20=54
R1=0.0 kg
–
30=29 Ø6.4 R2=0.9 kg
Installation manual
2.0
2.0
R1
R2
10