Panasonic PAW-160MAH2L Installation Instructions Manual page 99

As an alternative to using PAW-T10 terminals 1 and 2, it is also possible to use for example con-
tacts 1 to 4 in Section C of the main control board ("COM" and "DI1" to "DI3"). For correct use of
these contacts see →
The wiring system shown in the diagram provides the following control functions:
● During the first 3 minutes after unit has been switched to "ON" (either by BMS or by
local remote controller), the delay timer relay will keep the PAW-T10 contacts closed
and operation is permitted.
● After the AHU fan has been started and while the air volume flow is sufficient, the air
flow switch will keep the PAW-T10 contacts closed so that operation continues.
● Once the set delay time has elapsed, the timer contact will be opened, but the
PAW-T10 contacts will stay closed due to the air flow switch relay.
● When the air volume flow drops below the lower limit, the air flow switch will open
the PAW-T10 contacts and the outdoor unit will stop operation. At the same time the
remote controller in the AHU unit will be locked to prevent unintentional operation.
● The minimum air volume flow should be set on the air flow switch according to the
required minimum air volume flow of each AHU Kit model.
Electric circuit example including a timer and air flow switch
PACi or ECOi/ECO G outdoor unit
AHU Kit – Installation Instructions – 09/2021
5.3 Terminal board layout, p.
AHU Kit
AL1 PV
OUT
SV
ATU
SET
Main terminal board:
Terminals D4 and D5
t
L
N
66.
External control
system
ºC
ºC
Air Handling Unit (AHU)
Timer
PAW-T10
PAW-T10: Terminals I (1) and I (2)
1
2
3
4
30 56b
L
31 56b1
Electrical Wiring
Air flow switch
N 16 15 14
5
99