Field Setting; Field Setting Switches; Dip Switch Setting - Fujitsu AIRSTAGE K00250LW Addendum

* 5: Provide a DC12 to 24 V power supply.
Select a power supply capacity with an ample surplus for the connected load.
* 6: The allowable current is 30 mA or less.
Provide a load resistance such that the current becomes 30 mA or less.
* 7: Polarity is [+] for pin 1 and [-] for pin 2. Connect correctly.
Do not impress a voltage exceeding 24 V across pins 1-2.
* A twisted pair cable (22AWG (0.33 mm²)) should be used. Maximum length of
cable is 492 ft (150 m).
* Use an external input and output cable with appropriate external dimension, de-
pending on the number of cables to be installed.
6. 7. 4. Base heater terminal
This is the output signal for base heater. Output signal ON, when the outdoor tem-
perature goes down below 36 °F (2 °C), and signal OFF at the outdoor temperature
39 °F (4 °C).
P.C.B
(Optional parts)
1
CN115 AC230 V
2
(Black) (For rated 230 V power supply)
*8
3
Cable
4 2
(0.82 mm (18AWG))
* 8: Connect to pin 1 and pin 3. No connection pin 2 and pin 4.
* 9: The allowable current is 1 A or less.

7. FIELD SETTING

Discharge the static electricity from your body before setting up the DIP switches.
Never touch the terminals or the patterns on the parts that are mounted on the
board.
7. 1.

Field setting switches

Remove the service panel of the outdoor unit and the cover of the electrical compo-
nent box to access the PC board of the outdoor unit.
PC board switches for various settings and LED indicators are shown in the fi gure.
7. 2.

DIP switch setting

7. 2. 1. List of Settings
SET3 and SET5 must be set for the DIP switch.
Confi gure the settings before turning on the power. Settings for SET1, SET2, and
SET4 DIP switches are factory default ones. Do not change them.
DIP Switch
SET1 1-4 Forbidden
SET2 1-4 Forbidden
1
Outdoor unit address setting
2
SET3
3
Setting for number of slave units
4
SET4 1-4 Forbidden
1-2 Number of outdoor units installed
SET5 3 Forbidden
4 Terminal resistor setting
Outdoor unit PC board
Base heater *9
CAUTION
Function
7 Segment
LED lamp
LED indicator
Rotary switch
POWER
ERROR
MODE
LED101 LED102
(GREEN) (RED)
REF AD
LED105 LED104
SW106 SW105
X 10 X 10 X 1 X 1
MODE SET 1 SET 2 SET 3 SET 4
SELECT ENTER
/EXIT
SW101 SW102 SW103 SW104
SW107 SW108 SW109
Push button
DIP switch
SET5
7. 2. 2. Settings to be confi gured locally
(1) Outdoor unit address setting
When 2 or 3 outdoor units are installed to 1 refrigerant system, set the address for
each outdoor unit.
Set the address for all outdoor units.
SET3
Outdoor unit ad-
dress
1 2
OFF OFF 0
OFF ON 1
ON OFF 2
ON ON -
(2) Number of slave units setting for outdoor unit
Set the number of slave units connected to 1 refrigerant system.
Set only the master unit.
SET3
Number of connect-
able outdoor units
3 4
OFF OFF 0
OFF ON 1
ON OFF 2
ON ON -
(3) Number of outdoor units installed
The number of outdoor units installed in 1 refrigerant system must be set.
Set for all outdoor units.
SET5
Number of outdoor units
1 2
OFF OFF
OFF ON
ON OFF
ON ON
7. 2. 3. Terminal resistor setting
Be sure to set the terminal resistor according to specifi cations.
Set the terminal resistor for every network segment (NS).
If terminal resistor is set in multiple devices, the overall communication system
may be damaged.
If terminal resistor is not set in a device, abnormal communication may occur.
• Be sure to set 1 terminal resistor in a network segment. You can set the terminal
resistor at the outdoor unit or signal amplifi er.
• When setting the terminal resistor of a signal amplifi er, refer to the installation
manual of the signal amplifi er.
• When setting multiple terminal resistors, take note of the following items.
1 How many network segments are there in a VRF system?
2 Where will you set the terminal resistors in a network segment? (Condition for 1
segment: Total number of outdoor and indoor units and signal amplifi ers is less
than 64, or the total length of the transmission cable is less than 1,640 ft (500 m))
3 How many outdoor units are connected to 1 refrigerant system?
Confi gure the setting (DIP switch SET5) of the terminal resistor of the outdoor units as
shown below from conditions 1 to 3.
SET5
Terminal resistor
4
OFF Disable
ON Enable
Remarks
Master unit (Factory setting)
Slave unit 1
Slave unit 2
Forbidden
Remarks
Master unit only (Factory setting)
1 slave unit connected
2 slave unit connected
Forbidden
Remarks
1 (Factory setting)
2 -
3 -
- Forbidden
CAUTION
Remarks
(Factory setting)
-
En-18