4 Installation
Installation manual
7
RZQG7 RZQG71~12 RZQG140L7Y1L
Split system air conditioners
4P473073-1 – 2017.03
4.4
Charging refrigerant
4.4.1
To determine the additional refrigerant
amount
To determine if adding additional refrigerant is necessary
If
Then
L1 ≤ chargeless length
L1 (m)
Chargeless length=
▪ 10 m (size‑down)
▪ 30 m (standard)
▪ 15 m (size‑up)
You do not have to add
additional refrigerant.
L1 > chargeless length
You must add additional
refrigerant.
For future servicing, encircle the
selected amount in the tables
below.
INFORMATION
Piping length is the largest one way length of liquid piping.
To determine the additional refrigerant amount (R in kg)
L1 (m)
L1 (standard): 30~40 m 40~50 m 50~60 m
(a)
60~75 m
(a)
L1 (size-up): 15~20 m 20~25 m 25~30 m
(a)
30~35 m
(a)
R:
0.5 kg
1.0 kg
1.5 kg
2.0 kg
(a)
Only for RZQG100~140.
4.4.2
To determine the complete recharge
amount
When piping length is <5 m, a complete recharge of the unit is
required.
To determine the complete recharge amount (kg) (in case of
standard liquid pipe size)
Model
L1 (m)
3~10 10~20 20~30 30~40 40~50 50~60 60~75
RZQG71
1.9
2.4
2.9
3.4
3.9
—
—
RZQG100~140
3.0
3.5
4.0
4.5
5.0
5.5
6.0
To determine the complete recharge amount (kg) (in case of
size‑up liquid pipe size)
Model
L1 (m)
3~5
5~10 10~15 15~20 20~25 25~30 30~35
RZQG71
1.9
2.4
2.9
3.4
3.9
—
—
RZQG100~140
3.0
3.5
4.0
4.5
5.0
5.5
6.0
To determine the complete recharge amount (kg) (in case of
size‑down liquid pipe size)
Model
L1 (m)
3~10
RZQG71
1.9
RZQG100~140
3.0
4.4.3
Charging refrigerant: Setup
See
"4.3.1 Checking refrigerant piping: Setup" on page 6
4.4.4
To charge refrigerant
WARNING
▪ Only use R410A as refrigerant. Other substances may
cause explosions and accidents.
▪ R410A contains fluorinated greenhouse gases. Its
global warming potential (GWP) value is 2087.5. Do
NOT vent these gases into the atmosphere.
▪ When charging refrigerant, always use protective
gloves and safety glasses.
Prerequisite:
Before charging refrigerant, make sure the refrigerant
piping is connected and checked (leak test and vacuum drying).
1
Connect the refrigerant cylinder to both the service port of the
gas stop valve and the service port of the liquid stop valve.
2
Charge the additional refrigerant amount.
3
Open the stop valves.
4.4.5
To fix the fluorinated greenhouse gases
label
1
Fill in the label as follows:
b
Contains fluorinated greenhouse gases
2
1
1
1
2
2
kg
tCO
2
eq
GWP × kg
1000
=
=
+
kg
=
kg
=
GWP: XXX
RXXX
a
f
c
d
e
a
If a multilingual fluorinated greenhouse gases label is
delivered with the unit (see accessories), peel off the
applicable language and stick it on top of
a
.
b
Factory refrigerant charge: see unit name plate
c
Additional refrigerant amount charged
d
Total refrigerant charge
e
Greenhouse gas emissions
of the total refrigerant charge
expressed as tonnes CO
2
-equivalent
f
GWP = Global warming potential
NOTICE
In Europe, the
greenhouse gas emissions
of the total
refrigerant charge in the system (expressed as tonnes
CO
2
-equivalent) is used to determine the maintenance
intervals. Follow the applicable legislation.
Formula to calculate the greenhouse gas emissions:
GWP value of the refrigerant × Total refrigerant charge [in
kg] / 1000
2
Fix the label on the inside of the outdoor unit. There is a
dedicated place for it on the wiring diagram label.
