Mitsubishi Electric LGF-100GX-E Handbook page 22

b. Bypass ventilation switching input
This is used to force a changeover of the ventilation mode to bypass ventilation by means of the input
of an external switch etc.
During the input of bypass ventilation switching, the ventilation mode display of the remote
Operation
controller and the system controller will change to bypass ventilation. With PZ-60DR-E, the
ventilation mode setting cannot be changed due to operation restrictions. Even using a dif-
ferent remote controller or system controller to change the ventilation mode setting will result
in an automatic return to bypass ventilation.
Note that when the conditions of bypass ventilation prohibition are applicable, the ventilation
mode display of the remote controller and the system controller will remain as bypass venti-
lation; however, only damper operation will be fixed at Lossnay ( heat exchange ) ventilation.
When PZ-60DR-E is used in a system of multiple Lossnay units, input of bypass ventila-
Multiple
tion switching into the "Main" Lossnay will permit the switching of the ventilation mode of
units
all Lossnay units within the same group. When PZ-60DR-E is not used, input bypass
ventilation switching into each Lossnay unit. ( The setting is applied only to the Lossnay
units that have received input. )
A remote display adaptor ( PAC-SA88HA-E ) , which is sold separately, is required for the connections.
Insert the remote display adaptor ( PAC-SA88HA-E ) into the connector ( CN16 ) on the Lossnay circuit
board, and input the signal ( uncharged a-contact ) from an external switch to the brown and green lines.
When the switch is ON ( closed ) in the diagram below, the system will switch to bypass ventilation regard-
less of the ventilation mode setting of the remote controller and the system controller.
External switch, etc.
(At the time of bypass ventilation: Closed)
Contact rating: 15 V DC, 0.1 A or greater
Minimum applicable load: 1 mA or less
( 7 ) Remote/Local switching
This is used to prohibit Starting-Stopping from the remote controller.
A remote ON/OFF adaptor (PAC-SE55RA-E), which is sold separately, is required.
Insert the remote ON/OFF adaptor (PAC-SE55RA-E) into the connector for remote switching (CN32) on the
Lossnay circuit board, and connect the remote control signal (uncharged a-contact).
Note: This function cannot be used when PZ-41SLB-E is used.
Remote control switch
Start/stop operation is not possible with the remote controller when switch 1 is ON.
While switch 1 is ON, turning switch 2 ON will start Lossnay, and turning switch 2 OFF will stop Lossnay.
* Remote/Local switching and operation interlocked with an external device ( external control input ) cannot be
used together.
Insulation
processing
Wiring length within 10 m
Remote ON/OFF adaptor (Sold separately)
PAC-SE55RA-E
Switch
2
Switch
1
Wiring length within 10 m
Remote display adaptor
(Sold separately)
PAC-SA88HA-E
Brown 1
Red 2
Orange 3
Yellow 4
Green 5
Orange 1
Red 2
Brown 3
─ 22 ─
Lossnay circuit board
CN16
Fan speed/ventilation
mode switching
Lossnay circuit board
CN32
Remote/Local
switching