Panasonic U-26PE1U6 Technical Data & Service Manual page 92

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.
(3) Refer to Table 1-2 and Fig. 1-2 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
1
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.
CAUTION
Make sure the external static pressure is in a range of specifications.
Then proceed the external static pressure setting. Improper settings can cause noise, a shortage of airflow
volume and water leakage. Refer to Fig. 1-2 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 static pressure of outdoor units when the auto airflow 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 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 113°F(45°C) or not in the fan mode.
1-84
1. Specifications
1. Specifications