Mitsubishi Electric FDT125VNVF Technical Manual page 250

②Remote Control, Wiring and functions
●
DO NOT install it on the following places
①Places exposed to direct sunlight
②Places near heat devices
③High humidity places
④Hot surface or cold surface enough to generate condensation
⑤Places exposed to oil mist or steam directly.
⑥Uneven surface
Installation and wiring of remote controller
①Install remote controller referring to the attached installation manual.
②Wiring of remote controller should use 0.3mm
The insulation thickness is 1mm or more. (on-site configuration)
③Maximum prolongation of remote control wiring is 600 m.
If the prolongation is over 100m, change to the size below.
But, wiring in the remote controller case should be under 0.5mm
outside of the case according to wire connecting. Waterproof treatment is necessary at the
wire connecting section. Be careful about contact failure.
100 - 200m ........................ 0.5mm × 2 cores
2
Under 300m ....................... 0.75mm 2
Under 400m ....................... 1.25mm 2
Under 600m ....................... 2.0mm × 2 cores
2
④Avoid using multi-core cables to prevent malfunction.
⑤Keep remote controller line away from earth (frame or any metal of building).
⑥Make sure to connect remote controller line to the remote controller and terminal block of indoor
unit. (No polarity)
Control plural indoor units by a single remote controller.
①A remote controller can control plural indoor units (Up to 16).
In above setting, all plural indoor units will operate under same mode and temperature setting.
②Connect all indoor units with 2 core remote controller line.
③Set unique remote control communication address from "0" to "F" to each inside unit by the
rotary switch SW2 on the indoor unit's PCB.
Indoor Unit (1) Indoor Unit (2)
Address "0" Address"1"
Remote controller line (no polarity)
Remote controller
Master/ slave setting when more than one remote control unit are used
A maximum of two remote control units can be connected to one indoor unit (or one group of
indoor units.)
The air conditioner operation follows the last operation of the remote controller regardless of the
master/slave setting of it.
Acceptable combination is "two (2) wired remote controllers", "one (1) wired remote controller
and one (1) wireless kit" or "two (2) wireless kits".
Set one to "Master" and the other to "Slave".
Note:The setting "Remote control unit sensor enabled" is only selectable with the master remote
control unit in the position where you want to check room temperature.
Indoor Unit
Remote controller line
(no polarity)
Remote Remote
controller controller
"Master" "Slave"
×
2 2 core wires or cables.
2 . Change the wire size
× 2 cores
× 2 cores
Indoor Unit (16)
Address"F"
③ Operation and confirmation from remote controller
Operation from RC-EX1A
1 Check the number of units connected in the remote control system.
It checks sub units of twin, triple or W-twin connection.
"Menu"⇒"Next"⇒"Service & Maintenance"⇒
"Input password"⇒"IU address"
2 Check if each unit is connected properly in the remote control system.
It cannot check main and sub units of twin, triple or W-twin connection.
When the operation is stopped, "Menu"⇒
"Next"⇒"Service & Maintenance"⇒
"Input password"⇒"IU address"⇒"check run mode"
3 Setting main/slave remote controllers
"Menu"⇒"Next"⇒"R/C function settings"⇒
"Input password"⇒"Main/Sub of R/C"
4 Checking operation data
"Menu"⇒"Next"⇒"Service & Maintenance"⇒
"Input password"⇒"Operation data"
5 Checking inspection display
"Menu"⇒"Next"⇒"Service & Maintenance"⇒
"Input password"⇒"Inspection display"
6 Cooling test run from remote controller
"Menu"⇒"Next"⇒"Installation settings"⇒
"Input password"⇒"Test run"⇒
"Cooling test run"⇒"Start"
7 Trial operation of drain pump from remote controller
"Menu"⇒"Next"⇒"Installation settings"⇒
"Input password"⇒"Test run"⇒
"Drain pump test run"⇒"Run"
④ Function of CNT connector of indoor printed circuit board
Indoor units control box
Red
+12
1 1
Black
2 2
Yellow
CＮT
3 3
（Blue 6P）
Blue
4 4
Brown
5 5
Orange
6 6
Note （ 1） 0.3mm
+12
1 1
CＮTA
2 2
（Blue 2P）
Printed circuit board
Note (1): Do not use the length over 2 meter
●CNT connector (local) vendor model
Connector : Made by molex 5264-06
Terminals : Made by molex 5263 T
●Function
Output 1 Air conditioner operation output (When the air conditioner ON: X
Output 2 Heating output
Output 3 Thermostat ON output (When the thermostat ON: X
Output 4 Air conditioner check ON (When checking air conditioner: X
X
R5
At shipping
Input
X
R5
*Functions and controls may vary depending on the switching at site.
X
R6
At shipping
Input 2
X
R6
(FDT etc.)
*Functions and controls may vary depending on the switching at site.
* Refer to I/U settings.
●CNTA connector is installed on FDT, etc. Refer to the spec. drawings.
CNTA connector (local) vendor model
Connector : Made by JST XAP02V-1-E
Terminals : Made by JST SXA-01T-P0.6
249
- -
'12 • PAC-T-174
Operation from RC-E4, RC-E5
Press button to display the IU
AIR CON NO
address. Press the or button and check
addresses of connected indoor units one by one.
If AIR CON NO. button is pressed when the operation is stopped,
the indoor unit address is displayed. If you select one of
addresses for connected indoor units by pressing the
button and press the (MODE) button, the unit starts to blow air.
Set SW1 to "Slave" for the slave remote control
unit.
Press the CHECK button. ⇒ "
Press the (SET) button. ⇒ "
Press the " " button. ⇒ Select one of addresses
for connected indoor units by pressing the ▲ or ▼ button.
⇒ Press the (SET) button. ⇒ "
⇒ Select data by pressing the ▲ or ▼ button.
Press the CHECK button. ⇒
ERR DATA.⇒ Press the (SET) button. ⇒
" " is displayed. ⇒ Data.
①Start the system by pressing the
②Select " (Cool)" with the (MODE) button.
③Press the button for 3 seconds or longer.
TEST
The screen display will switch to: "
④When the (SET) button is pressed while "
is indicated, a cooling test run will start.
The screen display will switch to "
①Press the TEST button for three seconds or longer.
The display will change "
②Press the button once and cause "
displayed.
③When the (SET) button is pressed, a drain pump operation
will start. Display: " "
Note （ 1） 0.3mm
2 ×2m 0.75mm 2 ×0.2m
Butt splice
（Application coverage
Remote start/stop kit
0.75∼1.25mm
White
X Black
R1
X
R1
X Yellow
R2
X
R2
X
Blue
R3
X
R3
X
Brown
R4
X
R4
Orange
X
R5
Orange
X
R5
Remote start/stop
×2m
2
button or timer point
X
R6
X
R6
= ON)
R3
R4
OFF ⇒ ON: Air conditioner operates.
ON ⇒ OFF: Air conditioner stops.
OFF ⇒ ON: Air conditioner operates.
ON ⇒ OFF: Air conditioner stops.
or
" is displayed. ⇒
" is displayed. ⇒
" is displayed.
button. ⇒
button.
"
"
".
"
" to be
）
2
Common
Output 1
Output 2
Output 3
Output 4
AC100V
Input
power 1
DC12V
DC24V
AC100V
Input
power 2
DC12V
DC24V
= ON)
R1
= ON)