6 Installation
Installer and user reference guide
24
RXYSQ4~6TAY1B
VRV IV-S system air conditioner
4P482257-1 – 2017.03
NOTICE
After adding the refrigerant, do not forget to close the lid of
the refrigerant charging port. The tightening torque for the
lid is 11.5 to 13.9 N•m.
6.7.5
Error codes when charging refrigerant
INFORMATION
If a malfunction occurs, the error code is displayed on the
user interface of the indoor unit.
If a malfunction occurs, close valve A immediately. Confirm the
malfunction code and take corresponding action,
problems based on error codes" on page 38
6.7.6
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.
6.8
Connecting the electrical wiring
6.8.1
About connecting the electrical wiring
Typical workflow
Connecting the electrical wiring typically consists of the following
stages:
1
Making sure the power supply system complies with the
electrical specifications of the units.
2
Connecting the electrical wiring to the outdoor unit.
3
Connecting the electrical wiring to the indoor units.
4
Connecting the main power supply.
Field wiring: Overview
Field wiring consists of power supply (always including earth) and
indoor-outdoor communication (= transmission) wiring.
Example:
a
d
b
c
b
g
g
c
f
f
f
h
e
e
e
a
h
h
h
h
h
a
Field power supply (with earth leakage protector)
b
Main switch
c
Earth connection
d
Outdoor unit
e
Indoor unit
f
User interface
g
Power supply wiring (sheathed cable) (230 V)
h
Transmission wiring (sheathed cable) (16 V)
Power supply 3N~ 50 Hz
Power supply 1~ 50 Hz
Earth wiring
Power supply wiring and transmission wiring
It is important to keep the power supply and the transmission wiring
separated from each other. In order to avoid any electrical
interference the distance between both wiring should always be at
least 50 mm.
NOTICE
▪ Be sure to keep the power line and transmission line
apart from each other. Transmission wiring and power
supply wiring may cross, but may not run parallel.
▪ Transmission wiring and power supply wiring may not
touch internal piping (except the inverter PCB cooling
pipe) in order to avoid wire damage due to high
temperature piping.
▪ Firmly close the lid and arrange the electrical wires so
as to prevent the lid or other parts from coming loose.
The transmission wiring outside the unit should be wrapped and
routed together with the field piping.
Branches
Maximum number of branches
for unit-to-unit cabling
9
Transmission wiring
Vinyl cords with 0.75 to 1.25 mm²
sheath or cables (2‑core wires)
Maximum wiring length
(= distance between outdoor and
furthest indoor unit)
300 m
Total wiring length
(= distance between outdoor and
all indoors)
600 m
If the total transmission wiring exceeds these limits, it may
result in communication error.
No branching is allowed after branching.
Содержание RXYSQ5TAY1B
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