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2
9
9.9.7
Computerised Control (Forced OFF and ON/OFF Operation)
9.9.8
Central Control
242
• HRV • VKM-GA(M)V1
〈Wiring Method〉 (See "9.8 Electric Wiring Work".)
1. Remove the electric parts box lid.
2. Add remote controller 2 (slave) to the terminal block for remote controller (P
box. (There is no polarity.)
[PRECAUTIONS]
•
Crossover wiring is needed when using group control and 2 remote controllers at the same time.
•
Connect the indoor unit at the end of the crossover wire (P
Indoor unit 1
•
Wire specifications and how to perform wiring
Connect the input from outside to terminals T1 and T2 of the terminal block for remote controller.
∗ The equipment in Nighttime free cooling operation cannot be stopped forcibly with T1 or T2.
Wire specification
Sheathed wire (2 wire)
Gauge
0.75 - 1.25mm
Length
Max. 100m
External terminal
Contact that can ensure the minimum applicable load of 15V DC, 1mA.
•
Actuation
The following table explains FORCED OFF and ON/OFF OPERATIONS in response to Input A.
FORCED OFF
Input "ON" stops operation (impossible by remote controllers.) Input OFF → ON turns ON unit.
Input OFF enables control by remote controller.
•
How to select FORCED OFF and ON/OFF OPERATION
Enter the FORCED OFF and ON/OFF OPERATION selection using the local "external start/stop input"
settings based on "9.10 Field Setting and Test Run".
If control is performed with a central device (central management controller, etc.), group number needs to
be set with the remote controller. See the manual of each central device for detail.
• HRV • Heat Reclaim Ventilation
P
P
F
F
T
T
1
2
1
2
1
2
REMOTE
TRANSMISSION
FORCED
OFF
CONTRL
WIRING
Remote controller wiring
terminal block
Remote
Remote
controller 1
controller 2
(MAIN)
(SUB)
, P
) to remote controller 2 (slave).
1
2
Max. No. of
Indoor unit 2
indoor units
Crossover wire
. P
(P
)
1
2
Remote controller 2
Remote controller 1
(MAIN)
(SUB)
F2
T1
T2
FORCED
OFF
Input A
2
ON/OFF OPERATION
Input ON → OFF turns OFF unit.
, P
) in the electric parts
1
2
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