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Installation manual
22
RXYSQ4~Y1B
VRVIII-S System air conditioner
4PW68122-1 – 02.2011
11.2. Checks before initial start-up
After the installation, check the following before switching on the
circuit breaker:
1
Transportation stay
Be sure that the transportation stay is removed from the
compressor.
2
The position of the switches that require an initial setting
Make sure that switches are set according to your application
needs before turning the power supply on.
3
Power supply wiring and transmission wiring
Use a designated power supply and transmission wiring and
make sure that it has been carried out according to the
instructions described in this manual, according to the wiring
diagrams and according to local and national regulations.
4
Pipe sizes and pipe insulation
Make sure that correct pipe sizes are installed and that the
insulation work is properly executed.
5
Additional refrigerant charge
The amount of refrigerant to be added to the unit should be
written on the included "Added Refrigerant" plate and attached
to the rear side of the front cover.
6
Insulation test of the main power circuit
Using a megatester for 500
V, check that the insulation
resistance of 2 M
Ω
or more is attained by applying a voltage of
500 V DC between power terminals and earth. Never use the
megatester for the transmission wiring.
7
Stop valves
Be sure that the stop valves are open on both liquid and gas
side.
8
Drain pipe installation
Make sure that the drain piping is installed properly.
11.3. Field setting
If required, carry out any field setting according to the following
instructions. Refer to the service manual for more details.
Handling the switches
When carrying out field settings, operate the
switches with an insulated stick (such as a ball-
point pen) to avoid touching of live parts.
Location of the DIP switches, leds and buttons
Led state
Throughout the manual the state of the leds is indicated as follows:
Setting the push button switch (BS1~5)
Function of the push button switch which is located on the outdoor
unit PCB:
The figure shows state of the led indications when the unit is shipped
from the factory.
Setting the mode
The set mode can be changed with the
button according
to the following procedure:
■
For setting mode 1: Press the
button once, the led
is off
x
.
■
For setting mode 2: Press the
button for
5 seconds, the H1P led is on
w
.
If the H1P led is blinking
c
and the
button is pushed
once, it will change to setting mode 1.
NOTE
Note that during the first running period of the unit,
required power input may be higher than stated on the
nameplate of the unit. This phenomenon originates
from the compressor that needs elapse of a 50 hours
run in period before reaching smooth operation and
stable power consumption.
■
Make sure that the circuit breaker on the power supply
panel of the installation is switched off.
■
Attach the power wire securely.
■
Introducing power with a missing N-phase or with a
mistaken N-phase will break the equipment.
1
Led H1P~H8P
2
Push button switches BS1~BS5
3
DIP switches 2 (DS1-1, DS1-2)
x
OFF
w
ON
c
blinking
For changing the set mode
For field setting
For field setting
For test operation
For resetting the address when the wiring is changed or when
an additional indoor unit is installed
NOTE
If you get confused in the middle of the setting
process, push the
button. Then it returns to
setting mode 1 (H1P led is off).
1
2
3
BS1
BS2
BS3
BS4
BS5
MODE
DS1 1 2
ON
OFF
TEST/
HWL
IND
MASTER SLAVE L.N.O.P. DEMAND
H1P
H2P
H3P
H4P
H5P
H6P
H7P
MODE
SET
RETURN
TEST
RESET
BS1 MODE
BS2 SET
BS3 RETURN
BS4 TEST
BS5 RESET
BS1 MODE
BS1 MODE
BS1 MODE
BS1 MODE
BS1 MODE