(3) Refer to Table 3-4 and Fig. 3-18 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 airfl ow 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 airfl ow
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 airfl ow 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 status pressure setting check or auto airfl ow volume control operation check have not been completed.
CAUTION
O
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 insuf cient air ow or water leakages. Refer to Fig. 3-18 for the external static pressure setting range.
O
There are cases in which automatic variable dampers and other mounted items may trigger the P12 alarm on systems that
modify the static pressure of outdoor units when the auto air ow volume control operations or setting check operations
are carried out if high static pressure in the outdoor unit is lowered. In this event, lower the dampers, etc., so that the static
pressure in the outdoor unit reaches its lowest level, and then carry out the auto air ow volume control operations or setting
check operations.
O
Be sure to set the [External Static Pressure Setting] once again after amending the air ow path for the duct or air outlet after
setting the external static pressure.
O
Set the air inlet temperature within the range for use. The auto air ow volume control will not function if the air inlet tempera-
ture is over 45°C or not in the fan mode.
3-5-1. 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 equipment box and check where the
short-circuit pin on the indoor unit control PC board is located
(Fig. 3-17)
3.
Short circuit the applicable short-circuit pin in accordance with
the selected short-circuit pin connected (Table 3-3).
All manuals and user guides at all-guides.com
Table 3-3 Selection of connected short-circuit pins
External static pressure at the time of
rated airflow volume
14
Short-circuit pin
Unusable
TP6 (2P: white)
line e
TP3 (2P: yellow)
line d
White
Yellow
TP6
TP3
TP6
TP3
TP1
Indoor Unit control PC board
TP1 (2P: red)
Red
TP1
Fig.3-17