1-7-3
11
NOTE
(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.
EXTERNAL STATIC PRESSURE SETTING
Type F1
For low silhouette ducted 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.
a. No setting modification............................................................ : Use-as-is at shipment (there are cases in which the setting may differ
from the shipment setting when reset after once setting the external
static pressure.)
b. Manual setting (set with the PC board) ...................................: For high static pressure. Switching method with the short-circuit
connector.
c. Manual setting (set with the wired remote controller) .............: Low static pressure ~ high static pressure
d.
Auto airflow volume setting (set on the wired remote controller)
.... : Air outlet volume is automatically adjusted to the rated airflow volume
with the auto airflow control drive.
Flow of External Static Pressure
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 low silhouette ducted type to the main unit.
Start external static pressure setting
a. No setting modification
b. Manual setting
(set with the PC board)
TP3 or TP1 short-circuit
Refer to section “1-7-1. How to
Set on PC Board”.
c. Manual setting
Item code “b0” : 0~15 setting
(*Note (3)) (* Note (4))
Refer to section “1-7-2. or 1-7-3.”. Refer to section “1-7-2. or 1-7-3.”.
d. Auto airflow volume setting
(* Note (4)) Item code “b0” :
-2 setting
Operation checks for external static pressure settings (*Note (2))
Refer to section “1-7-2. or 1-7-3.”.
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.
This can be omitted if deemed unnecessary in the event of the same installation/set-up being available.
Auto airflow volume control
operations (*Note (5))
Refer to section “1-7-2. or 1-7-3.”.
Test operation display will disappear. (*Note (6))
External static pressure setting completed
Wired remote controller available
Lines
15
and
14
settings (high static pressure) on
the PQ diagram required
Set the rated airflow
volume with the exception of lines
15
,
14
and,
8
Line
8
(set at
shipment) on the PQ diagram
designed and installed
No
No
No
No
Yes
Yes
Ye
sYes
(3) Refer to Table 1-7-2, 1-7-3 and Fig. 1-7-2 for details on the relationship between the value of item code “b0” and the external static
pressure.
(4) When set in group control (connecting multiple indoor units with one wired remote controller), set each indoor unit to item code “b0”.
When amending the setting after selecting [b. Manual setting] (due to airflow path changes, etc.), it is necessary to cancel [b.
Manual setting] (disconnect short-circuit connector). When [b. Manual setting] has not been cancelled, [c. Manual setting] and [d.
Auto airflow volume setting] will be activated if selected, but [b Manual setting] takes precedence when the power is switched back
on after power outages, etc.
(5) If this is not completed within 8 minutes, check the drive mode, air speed and air inlet temperature.
(6) When set in group control (connecting multiple indoor units with one wired remote controller), the test run operations display will
disappear once the external static pressure setting check or auto airflow volume control operation check have been completed for
the main unit. Decisions on sub-unit complete are not possible. The test run operation display will disappear after one hour even if
the external static pressure setting check or auto airflow volume control operation check have not been completed.
Be sure to check that the external static pressure is within the range for use and then make the setting. Failure to observe
this may result in insufficient airflow or water leakages. Refer to Fig. 1-7-2 for the external static pressure setting range.
There are cases in which automatic variable dampers and other mounted items may trigger the P12 alarm on systems that
modify the external static pressure when the auto airflow volume control operations or setting check operations are carried
out if high external static pressure is lowered. In this event, lower the dampers, etc., so that the external static pressure
reaches its lowest level, and then carry out the auto airflow volume control operations or setting check operations.
Be sure to set the [External Static Pressure Setting] once again after amending the airflow path for the duct or air outlet
after setting the external static pressure.
Set the air inlet temperature within the range for use. The auto airflow volume control will not function if the air inlet
temperature is over 45°C or not in the fan mode.
1-7-1. 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 electrical component box and check where
the short-circuit pin on the indoor unit control PC board is
located (Fig. 1-7-1)
3. Short circuit the applicable short-circuit pin in accordance
with the selected short-circuit pin connected (Table. 1-7-1).
150 Pa : TP3 (2P: yellow) short-circuit
140 Pa : TP1 (2P: red) short-circuit
* Use the short-circuit connector (2P: yellow) supplied.
Table 1-7-1 Selection of connected short-circuit pins
External static pressure at the time of
rated airflow volume
Short-circuit pin
Unusable TP6 (2P: white)
150 Pa TP3 (2P: yellow)
140 Pa TP1 (2P: red)
TP6 TP3 TP1
TP6 TP3 TP1
WhiteYellowRed
Indoor Unit control PC board
Fig. 1-7-1
CAUTION
SM830266-00_大洋州向けR32シングルTD&SM.indb 3 18/03/29 10:19:44
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