How To Set On Pc Board - Panasonic S-22MU1E5A Technical Data Manual

3. How to install the indoor unit
(3) Refer to Table 2-6 and Fig. 2-56 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.
1
CAUTION
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. 2-56 for the external static
pressure setting range.
2
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
3 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.
4
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.
5

3-3-6-1. 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
6
the short-circuit pin on the indoor unit control PC board is
located (Fig. 2-55)
3. Short circuit the applicable short-circuit pin in accordance
with the selected short-circuit pin connected (Fig. 2-56).
150 Pa : TP3 (2P: yellow) short-circuit
7
140 Pa : TP1 (2P: red) short-circuit
* Use the short-circuit connector (2P: yellow) supplied.
8
9
Table 2-5 Selection of connected short-circuit pins
External static pressure at the time of
rated airflow volume
Unusable
150 Pa
140 Pa
TP6 TP3 TP1
Indoor Unit control PC board
2-28
Design of VRF SYSTEM
Short-circuit pin
TP6 (2P: white)
TP3 (2P: yellow)
TP1 (2P: red)
White Yellow Red
TP6 TP3 TP1
Fig. 2-55