Daikin BRP7A51 [2/2] Remote control input operation control
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Daikin BRP7A51 [2/2] Remote control input operation control

Daikin BRP7A51 [2/2] Remote control input operation control
En.
1P368484-1
1
First, do the wiring between the indoor and outdoor units, then to the separate power sources and finally
between the indoor units and the remote controllers. Next, check if they operate properly.
(When using for group control by a remote controller, avoid cross wiring.)
For details, see the installation manual of the indoor and outdoor units.
2
Next, do the wiring between outside units such as the central control monitor and adjust the necessary settings.
For details, see Wiring to outside units (central control monitor) .
Wiring to indoor units
Perform the connections as shown above, using the attached relay harnesses (1) and (2).
● Connect relay harness (1) to the connector (X35A or X18A) on the indoor unit PCB.
● Relay harness (2) has no polarity. Connect it to terminals P1 and P2 on the transmission wiring terminal
board inside the indoor unit Electric parts box.
Wiring to outside units (central control monitor)
1. Remote control input (operation control)
Do the wiring as described below. Wiring differs depending on whether a voltage or no-voltage input is used.
2. External input logic (for interlock function of hotel room)
Connect the external inputs in accordance with the following specification.
Connection specification of External inputs
Input name
External input logic
Input A
Input B
Status
Windows CLOSE
Windows OPEN
Key Card IN
Key Card OPEN
Contact State
close
open
close
open
(Wiring specifications)
Wiring … Sheathed vinyl cord or cable
Wire size … 0.18 - 1.25 mm
2
Length … Max. 150 m
〈NOTE〉
Keep transmission wiring away from power
supply wiring to avoid malfunctions.
Indoor unit PCB
Relay harness (2)
Relay harness (1)
Blue
White
Adapter
Transmission wiring
terminal board
X35A (SKY AIR)
X18A/X35A (VRV)
× 2A
× 1A
P1 P2
NON
VOLT
VOLT
NON
VOLT
VOLT
Set the changeover switch (SS1) to
“VOLT”. (Factory set : VOLT)
Set the changeover switch (SS1) to
“NON VOLT”.
For voltage input
BC
B2
B1
G
Use an external 12 - 24 V power supply. Each contact
requires approximately 10 mA, therefore carefully select
the power supply capacity. Power supply is connectable
without regard to positive or negative.
Use a small voltage contact of a
minimum current load of 12 V,
1 mA or less.
Connect the control input
to the common contact
(no polarity).
Use a small voltage contact of a
minimum current load of 12 V,
1 mA or less.
Input B
Input A
For voltage free contact input
BC
B2
B1
Input B
Input A
4 ELECTRIC WIRING
12-24V
Control terminal
B1/BC
B2/BC

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