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2. Detailed Settings Function
1-1. How to Set on PC Board
1.
Turn off the power breaker to halt the supply of electricity to the PC board.
2.
Open the lid of the electrical component box and confirm the location where the Select switch on the indoor unit control PCB is placed.
(Fig. 2-9)
3.
Set the On/Off switches in the Off position which are now set in the On position.
Select the positions of the Select SW001 switches respectively to make the desired external static pressure settings referring to
the Table 2-8.
Table 2-8 External static pressure SW setting
External static pressure
at the time of rated
airflow volume
224
280
270Pa
270Pa
140Pa
140Pa
60Pa
72Pa
1-2. Operating the Timer Remote Controller
(CZ-RTC2)
How to set the external static pressure
1. Press and hold down the
simultaneously for 4 or more seconds.
(
, the Unit No., Item Code and Detailed Data
will blink on the LCD display.)
2. The indoor unit numbers in the group control will
be sequentially displayed whenever the Unit Select
button is pressed
Only the fan motor for the selected indoor unit will
operate during this time.
3. Specify the "
" item code by pressing the
/
buttons for the temperature set-
ting buttons and confirm the values.
("
" set at shipment )
4. Press the
/
buttons for the time to amend
the values for the set data.
Refer to Table 2-9 and Fig. 2-10 and select a value
"
", "
" or "
5. Press the
button.
The display will stop blinking and remain illuminat-
ed.
6. Press the
button. The fan motor will stop oper-
ating and the LCD display will return to the normal
stop mode.
SW001
TP6
TP3
TP1
ON
1
2
3
ON
1
2
3
ON
1
2
3
,
and
buttons
.
".
SW001
ON
1
2
3
Table 2-9 Setting the external static pressure
Indoor unit
180, 224
External static pressure of the rated air
flow volume
270 Pa
140 Pa
60 Pa
1
6
5
NOTE:
Failure to set this parameter may result in decreased airflow
and condensation.
5 - 35
VRF SYSTEMS Indoor Unit
Indoor Unit control PC board
SW001
ON
1
2
3
Item code
280
270 Pa
140 Pa
72 Pa
1
4
Fig. 2-9
5
2
3
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