Installation manual

Installation manual
11
RXYSQ4~6PA7V1B + RXYSQ4~6PA7Y1B
VRVIII-S system air conditioner
4PW40730-1
10.2. 3 procedures for adding refrigerant
Procedure 1: Adding refrigerant by using the automatic
refrigerant charging function (recommended)
How to connect the tank?
When the refrigerant tank is connected and the specified operation is
performed, the appropriate amount of refrigerant will be charged into
the system. After charging, the system will stop automatically. The
refrigerant must be charged according to the procedure described
below.
Automatic refrigerant charging procedure
1 Open the liquid and gas side stop valves completely.
2 Turn on the power of the outdoor unit and indoor units.
3 Make sure that the led on the PCB on the outdoor unit are as
shown in the table below. This indicates that the system is
operating normally.
Led state
Throughout the manual the state of the leds is indicated as
follows:
If H2P is lit up, check the type of error based on the error code in
the remote controller and correct the error in accordance with
"12.4. Test operation" on page 19.
4 Automatically charge the refrigerant according to the procedure
described below.
4.1 Press once.
4.2 Press for 5 seconds. The unit will start running.
If the led display below appears, the automatic refrigerant
charging restriction has been exceeded. Additional refrigerant
must be charged by calculating the additional refrigerant
charging amount.
or
If the led display below appears, check the indoor unit
connection capacity.
If the led display below appears, the liquid and gas side stop
valves may be closed.
4.3 When the led indication becomes as shown in the table below in
about 15 to 30 minutes after start of operation, open valve A at
once to start charging of the refrigerant.
Immediately after starting charging of the refrigerant by opening
valve A, press once. When is not pressed
within 10 minutes after the led indication is shown, charging is
stopped.
1 Liquid line stop valve
2 Gas line stop valve
3 To indoor unit
4 Service port for adding refrigerant
5 Valve A
6 R410A tank
7 Measuring instrument
8 Pipe fixing plate
CAUTION
■ Make sure to turn ON the power 6 hours before
starting the operation. This is necessary to warm the
crankcase by the electric heater.
■ Automatic charging is able to charge 6 kg/hour
refrigerant at an outside temperature of 0°C to 24 kg/
hour refrigerant at an outside temperature of 35°C.
The charging time depends on the amount of charged
refrigerant and on the outside temperature.
■ Automatic refrigerant charging is NOT possible if the
following restrictions are exceeded:
■ Outside temperature: 0°C DB~43°C DB
■ Indoor temperature: 0°C DB~32°C DB
■ Indoor unit connection capacity: 50%~130%
Note that valve A must be closed!
NOTE
When an indoor unit is connected to the
refrigerant system and the indoor unit is turned
off, automatic charging will fail.
MODE
TEST/HWL
IND
MASTER
SLAVE
L.N.O.P.
DEMAND
H1P H2P H3P H4P H5P H6P H7P
xxwxxxx
3
6
7
12
4
5
3
6
7
12
8
4
5
V1 Y1
x
OFF
w
ON
c
blinking
❃
ON or OFF
WARNING
Do not touch anything else than the push-
buttons (BS1~5) on the PCB when making
the settings. These settings must be done
with the power on
H1P H2P H3P H4P H5P H6P H7P
wwwwwww
H1P H2P H3P H4P H5P H6P H7P
xcxxx
❃❃
H1P H2P H3P H4P H5P H6P H7P Description of error
wcccw x x
Inappropriate outdoor
temperature
H1P H2P H3P H4P H5P H6P H7P Description of error
wccc xwx
Inappropriate indoor
temperature
H1P H2P H3P H4P H5P H6P H7P Description of error
wcccc x w
Inappropriate indoor unit
connection capacity
H1P H2P H3P H4P H5P H6P H7P Description of error
wx
❃❃❃❃❃
Stop valve is closed
NOTE
If you want to repeat the automatic refrigerant
charging operation from step 4.2, fully open the
liquid and gas side stop valves and press the
button once.
BS4 TEST
BS4 TEST
BS1 MODE
BS4 TEST BS4 TEST