1-7-1
1
1
1
1
Flow of External Static Pressure
No
No
No
Start external static pressure setting
Yes
Yes
Yes
Line A (set at shipment)
on the PQ diagram was designed
and installed.
Set static pressure setting
to manual setting mode.
Wired remote controller
available
b. Manual setting
(set with the indoor unit control
PCB) Change the dip switch.
See “How to Set on Indoor Unit
Control PCB” on page 1-7-2.
a.No setting modification
c. Manual setting
Item code “b0” : 0~10 setting(*Note (3)) (*Note (4))
See “Operating the High-spec Wired
Remote Controller” or “Operating the Timer
Remote Controller”on page 1-7-3 and 1-7-5.
d. Auto airflow volume setting
Item code “b0” : -2 setting (*Note (4))
See “Operating the High-spec Wired
Remote Controller” or “Operating the Timer
Remote Controller”on page 1-7-3 and 1-7-5.
Auto airflow volume control
operations
(*Note (5))
See “Operating the High-spec Wired
Remote Controller” or “Operating the Timer
Remote Controller”on page 1-7-3 and 1-7-5.
External static pressure setting completed
Test operation display will disappear. (*Note (6))
Operation checks for external static pressure settings
(*Note (2))
See “Operating the High-spec Wired Remote Controller” or “Operating the Timer Remote Controller”on page 1-7-3 and 1-7-5.
Check if the setting is within the range of use on the PQ diagram.
If out of range, adjust until it becomes within the range of use.
In the case of identical setup, it is possible to omit this operation check if judged unnecessary.
NOTE
a.
(1) Check the following items before performing the setting-check operations or auto airflow volume operations.
1) Check to make sure that the electrical wiring and ducting have been completed. Activate the stand-by mode. In particular, make
sure that the closed damper located in the middle of the duct is open, if installed. Also, make sure that air filters have been
installed inside the air inlet duct.
Check to make sure air is not leaking from the joints.
2) If multiple air outlets and air inlets are included, adjust the airflow volume ratio of all of them until they meet the design airflow ratio.
3) Make sure the address setting has been completed.
(2) The operation check will be completed in approximately three minutes if the settings have been made correctly. The settings will be
modified if they are out of the range of use (maximum 30 minutes.). If this is not completed within 31 minutes, check whether the air
speed is set to “H” or not.
b.
from the shipment setting when reset after once setting the external
static pressure.)
1-7. Indoor Fan Performance (Type F3)
EXTERNAL STATIC PRESSURE SETTING
For middle static pressure duct type indoor units, the ventilating resistance so-called “external static pressure” becomes greatly different
depending on the connected duct length, shape, number of air outlet ports and types of filters.
When installing this unit, be sure to carry out the external static pressure setting in order to operate in the rated airflow volume.
Choose one of the following methods from “a”, “b”, “c” or “d” as shown in the flow chart (within the dotted lines) and then make the
setting accordingly.
No setting modification............................................................ : Use-as-is at shipment (there are cases in which the setting may differ
connector.
c.
Manual setting (set with the indoor unit control PCB) ............. : For high static pressure. Switching method with the short-circuit
d.
Manual setting (set with the wired remote controller) ............. : Low static pressure ~ high static pressure
with the auto airflow control drive.
Auto airflow volume setting (set on the wired remote controller) .... : Air outlet volume is automatically adjusted to the rated airflow volume
Finish the ducting and electrical wiring and prepare it for use. (Note (1))
External static pressure should be set during initial operations after installation (before
the cooling and heating test run).
When operating with group control (connecting multiple indoor units with one wired
remote controller), make the middle static pressure duct type to the main unit.
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