Installation manual
18
RXYSQ6P8Y1B9
VRVIII-S System air conditioner
4P357505-1 – 2013.08
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.
12.3.
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
1
Led H1P~H8P
2
Push button switches BS1~BS5
3
DIP switches 2 (DS1-1, DS1-2)
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:
BS1 MODE
For changing the set mode
BS2 SET
For field setting
BS3 RETURN
For field setting
BS4 TEST
For test operation
BS5 RESET
For resetting the address when the wiring is changed or
when an additional indoor unit is installed
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
BS1 MODE
button according
to the following procedure:
For setting mode 1
: Press the
BS1 MODE
button once, the led
is off
x
.
For setting mode 2
: Press the
BS1 MODE
button for
5 seconds, the H1P led is on
w
.
If the H1P led is blinking
c
and the
BS1 MODE
button is pushed
once, it will change to setting mode 1.
Setting mode 1
The H1P led is off (COOL/HEAT selection setting).
Setting procedure
1
Push the
BS2 SET
button and adjust the led indication to either
one of the possible settings as shown below in the field marked
:
2
Push the
BS3 RETURN
button and the setting is defined.
WARNING
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.
x
OFF
w
ON
c
blinking
1
2
3
NOTICE
If you get confused in the middle of the setting process,
push the
BS1 MODE
button. Then it returns to setting
mode 1 (H1P led is off).
1
In case of COOL/HEAT setting by each individual outdoor unit
circuit.
2
In case of COOL/HEAT setting by the master unit when outdoor
units are connected in multiple-system combination
(a)
.
(a) It is necessary to use the optional external control adapter for outdoor unit
(DTA104A61/62). See the instruction delivered with the adapter.
3
In case of COOL/HEAT setting by the slave unit when outdoor
units are connected in multiple-system combination
(a)
.
H1P H2P H3P H4P H5P H6P H7P
1
x x c x x x x
2
x x x c x x x
3
x x x x c x x
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
4P357505-1.book Page 18 Tuesday, September 10, 2013 7:59 AM
