Panasonic U-72MF2U9 Service Manual page 141

2. Detailed Settings Function
ExTERNAL STATIC PRESSURE SETTINg
• Concealed Duct-Medium Static (S-07～54MF2U6)
For concealed duct-medium static 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
b. Manual setting (set with the PC board) ......................................... : For high static pressure. Switching method
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
Flow of External Static Pressure
Start external static pressure setting
Line (set at ship-
8
ment) on the PQ diagram de-
signed and installed
Yes
a. No setting modification
Operation checks for external static pressure settings (*Note (2))
See section 1-2 or 1-3 or 1-4.
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.
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 concealed duct-medium static type to the main unit.
No
Lines
settings (high static pressure) on
the PQ diagram required
No
Wired remote controller available
b. Manual setting
(set with the PC board)
TP3 or TP1 short-circuit
See section "1-1. How to Set
on PC Board".
Test operation display will disappear. (*Note (6))
External static pressure setting completed
4 - 19
Remote Controller Functions
which the setting may differ from the shipment
setting when reset after once setting the
external static pressure.)
with the short-circuit connector.
the rated airflow volume with the auto airflow
control drive.
and
15 14
No
Yes
No
Yes
c. Manual setting
Item code "b0" : 0~15 setting
(*Note (3)) (* Note (4))
See section 1-2 or 1-3 or 1-4.
3WAY VRF SYSTEM
Set the rated airflow
volume with the exception of lines
, and
15 14 8
Yes
d. Auto airflow volume setting
(* Note (4)) Item code "b0" :
-2 setting
See section 1-2 or 1-3 or 1-4.
Auto airflow volume control
operations (*Note (5))
See section 1-2 or 1-3 or 1-4.
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