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250C7Y1B
Split system air conditioner
4PW34720-1G – 07.2010
Installation manual
15
9.2.
Checks before initial start-up
After the installation, check the following before switching on the
circuit breaker:
1
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.
2
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.
3
Pipe sizes and pipe insulation
Make sure that correct pipe sizes are installed and that the
insulation work is properly executed.
4
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.
5
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.
6
Installation date
For reference, keep record of the installation date on the sticker
on the rear of the upper front panel.
9.3.
Field setting
If required, carry out field settings according to the following
instructions. Refer to the service manual for more details.
Opening the switch box and handling the switches
When carrying out field settings, remove
the inspection cover (1).
Operate the switches with an insulated
stick (such as a ball-point pen) to avoid
touching of live parts.
Make sure to re-attach the inspection cover (1) into the switch box
cover (2) after the job is finished.
Location of the DIP switches, LEDs and buttons
Led state
Throughout the manual the state of the LEDs is indicated as follows:
Setting the DIP switches
Setting the push button switch (BS1~5)
Function of the push button switch which is located on the outdoor
unit PCB (A1P):
Setting the mode 2
The set mode can be changed by pressing the
button for
5 seconds. The setting mode will change to setting mode 2 and the
H1P LED will be ON
w
.
Exiting mode 2
When all settings are finished and the operation did start according to
the setting, push the
button once to exit the mode 2.
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.
2
1
1
LEDs H1P~H7P
2
Push button switches
BS1~BS5
3
Dip switch 1 (DS1: 1~4)
4
Dip switch 2 (DS2: 1~4)
x
OFF
w
ON
c
blinking
What to set with DIP switches DS1 and DS2
DS1-3
LOW NOISE OPERATION LEVEL SETTING (
)
(
= not installed = factory setting)
DS1-4
HIGH STATIC PRESSURE SETTING
DS2-1
AUTOMATIC LOW NOISE OPERATION AT NIGHT TIME
DS2-2
POWER CONSUMPTION LIMITATION SETTING (
)
DS1-1
DS1-2
DS2-3
DS2-4
NOT APPLICABLE
DO NOT CHANGE THE FACTORY SETTING.
For changing the set mode
For field setting
For field setting
For test operation
For forced defrost or pump down
NOTE
If you get confused in the middle of the setting
process, push the
button once. Then it
returns to setting mode 2 (H1P LED is ON
w
).
H1P H2P H3P H4P H6P H7P
HAP
BS1
BS2
BS3
BS4
BS5
ON
OFF
1
2
3
4
DS2
DS1
1
2
3
4
OFF
ON
5
6
7
8
L.N.O.P
OFF
DEMAND
H1P
MODE
H2P
TEST
HWL
H3P
IND
H4P
MASTER
H5P
SLAVE
H6P
L.N.O.P
H7P
DEMAND
HAP
BS1
MODE
BS2
SET
BS3
RETURN
BS4
TEST
BS5
FORCED DEF
BS1 MODE
BS2 SET
BS3 RETURN
BS4 TEST
BS5 FORCED DEF
BS1 MODE
BS1 MODE
BS1 MODE