Mitsubishi LGH-15RX5-E Handbook page 35

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 con-
Operation
troller 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 different
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 ventila-
tion; however, only damper operation will be fixed at Lossnay (heat exchange) ventilation.
When using PZ-60DR-E in a system of multiple Lossnay units, input of bypass ventilation
Multiple
switching into the "Main" Lossnay will permit the switching of the ventilation mode of all
units
Lossnay units within the same group. When not using PZ-60DR-E, 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 regardless of the ven-
tilation mode setting of the remote controller and the system controller.
External switch, etc.
(At 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 using PZ-41SLB-E.
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
— 35 —
Lossnay circuit board
CN16
Fan speed/ventilation
mode switching
Lossnay circuit board
CN32
Remote/Local
switching