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VRF SYSTEMS Indoor Unit Specifications
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7. High Static Pressure Ducted Type (Type E2)
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7-7-1. Indoor Fan Performance
VRF SYSTEMS Indoor Unit Specifications
7. High Static Pressure Ducted Type (Type E2)
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. 4-5)
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 4-5.
Table 4-5 External static pressure SW setting
External static pressure
at the time of rated
airflow volume
SW001
Type 180
TP6
TP3
TP1
ON
1
2
3
1
ON
2
3
270Pa
140Pa
60Pa
Type 224
270Pa
140Pa
60Pa
Type 280
270Pa
140Pa
72Pa
1
2
ON
3
Table 4-6 Setting the external static pressure
Indoor unit
Item code
External static pressure
of the rated airflow volume
Type 180
270 Pa
140 Pa
60 Pa
Type 224
270 Pa
140 Pa
60 Pa
Type 280
270 Pa
140 Pa
72 Pa
6
2
1
5
1
4
3
NOTE:
Failure to set this parameter may result in decreased airflow
and condensation.
7-7-2. Operating the Timer Remote Controller
(CZ-RTC2)
How to set the external static pressure
1. Press and hold down the
,
and
buttons
simultaneously for 4 or more seconds.
(
, the Unit No., Item Code and Detailed
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
setting 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 4-6 and Fig. 4-3 and select a value
“
”, “
” or “
”.
5. Press the
button.
The display will stop blinking and remain
illuminated.
6. Press the
button. The fan motor will stop
operating and the LCD display will return to the
normal stop mode.
1
ON
TP6
TP3
TP1
2
SW001
3
1
TP
6
TP
3
TP
1
2
SW001
3
ON
Indoor Unit control PC board
ON
Fig. 4-5
CZ-RTC2
TD831172-03 VRF SYS INDOOR.indb 116
2015/06/04 12:06:56