Mitsubishi FDT125VNPWVH - Page 98

④
Wirings
a) Connecting of indoor unit and relay parts
• Connect the accessory wiring to CNJ on the indoor control board.
• Connect the relays to the accessory wiring as shown below.
b) Connecting of relays and damper motors
• Connect the damper motor cable to the relays as shown below.
• Connect the power source of the damper motors to the terminal block (1, 2) in the indoor
control box as shown below.
• When connecting
damper motors, ensure to connect them sequentially starting from zone 1.
Attention
• Connect in such a way that the wiring color can not be mistaken.
It may cause damage or malfunction.
Wiring specification
Accessory Wiring color Usefulness
White,Black Damper motor power source
White,Red Damper moter1 output (for Zone1)
Blue Damper moter2 output (for Zone2)
Yellow Damper moter3 output (for Zone3)
Brown Damper moter4 output (for Zone4)
Locally supplied parts
Item Specification
Damper motor
Voltate 240VAC or 24VAC
Frequency 50Hz/60Hz
Relay LY2F equivalent
Cable (from Indoor unit to relays)
0.75mm
2
or more
30m or less
Damper motor cable
0.75mm
2
or more
30m or less
Transformer *1
Input voltage 240VAC
Output voltage 24VAC
Fuse
FSL or FJL 1.25(EM) Time lag type
(NIPPON SEISEN CABLE, LTD.)
or equivalent
*1: In case of AC24V, it is necessary.
The size or power source method shall be selected properly depending on the type of the
damper motor and the damper motor cable to be used.
CNJ
(WHITE)
Relay for damper
motors power source
LY2F or equivalent
Damper
motor
Relay LY2F or equivalent
Accessory
wiring
(CONTROL)
(POWER)
④
Wirings
a) Connecting of indoor unit and relay parts
• Connectthe accessory wiring to CNJ on the indoor control board.
• Connect the relays to the accessory wiring as shown below.
b) Connecting of relays and damper motors
• Connect the damper motor cable to the relays as shown below.
• Connect the power source of the damper motors to the terminal block (1, 2) in the indoor
control box as shown below.
• When connecting damper motors, ensure to connect them sequentially starting from zone 1.
Attention
• Connect in such a way that the wiring color can not be mistaken.
It may cause damage or malfunction.
Wiring specification
Accessory Wiring colorUsefulness
White,BlackDamper motor power source
White,RedDamper moter1 output (for Zone1)
Blue Damper moter2 output (for Zone2)
Yellow Damper moter3 output (for Zone3)
BrownDamper moter4 output (for Zone4)
Locally supplied parts
Item Specification
Damper motor
Voltate 240VAC or 24VAC
Frequency50Hz/60Hz
RelayLY2F equivalent
Cable (from Indoor unit to relays)
0.75mm
2
or more
30m or less
Damper motor cable
0.75mm
2
or more
30m or less
Transformer *1
Input voltage240VAC
Output voltage24VAC
Fuse
FSL or FJL 1.25(EM) Time lag type
(NIPPON SEISEN CABLE, LTD.)
or equivalent
*1: In case of AC24V, it is necessary.
The size or power source method shall be selected properly depending on the type of the
damper motor and the damper motor cable to be used.
⑤
Method to set the large air volume of FDU, FDUA
(FDU 125, FDUA125 only)
With the factory default, the air flow volume is set with emphasis on quietness.
When the static pressure setting is 120Pa or more, the air volume can be increased.
(FDU125, FDUA125 only)
Attention
• If this setting is implemented, the noise will increase, so c with the user that the
noise is acceptable.
Turn SW8-1 ON before turning on the power source, to select the large air flow volume setting.
SW8-1
ON
SW8-1:OFF
(Standard setting
ON
SW8-1:ON
(Large air flow volume setting
CNJ
(WHITE)
Relay for damper
motors power source
LY2F or equivalent
Damper
motor
Relay LY2F or equivalent
Accessory
wiring
(CONTROL)
(POWER)
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3
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'19 • PAC-SM-316
'22 • PAC-SM-412
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97
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