This product is an adapter which outputs the ON/OFF signals from the
air conditioner to the backup heater.
CN24
(Coil rating of DC 12V,
1W or less.) Use
relay with reinforced
insulation
Relay
1. Outline
2. Backup heating function
Indoor electronic
P.C. board
1. How to connect the relay
•
Connect the connector to CN24 on the indoor electronic P.C. board.
•
Connect the electrical wires to the relay.
2. Operation details
(1) Starting conditions
When both a) and b) are satisfied, the relay turns ON.
a) The HEAT mode is selected. (The unit operates in the HEAT mode
when the AUTO operation is selected.)
b) In the figure below, the conditions for ON are satisfied. (NOTE1)
(2) Releasing conditions
When either a) or b) is satisfied, the relay turns OFF.
a) The modes other than HEAT are selected. (The unit operates in
the mode other than HEAT when the AUTO operation is selected.)
b) In the figure below, the conditions for OFF are satisfied. (NOTE1)
Backup heating
function
Ambient temperature
(Default)
Ambient temperature
(During operation)
Enabled
50°F (10°C) or less
Disabled
more than 50°F (10°C)
50°F (10°C)
68°F (20°C)
Relay
(heater)
Room temperature
minus set temperature
(Initial)
Room temperature
minus set temperature
(During operation)
ON
-3°F (-1.5°C) or less
OFF
more than -3°F (-1.5°C)
-3°F (-1.5°C)
-1°F (-0.5°C)
Installation manual
English
Models
MAC-1702RA-U
MAC-1710RA-U
[FOR INSTALLER]
INSTALLATION MANUAL
CONNECTION MANUAL
[POUR L’INSTALLATEUR]
MANUEL D’INSTALLATION
MANUEL DE BRANCHEMENT
[PARA EL INSTALADOR]
MANUAL DE INSTALACIÓN
MANUAL DE CONEXIÓN
HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
Printed in Thailand
JG79A895H01
Connector Cable (CN24)
CN24
For details on the cable layout, refer to “Connecting an
INTERFACE/CONNECTOR CABLE to the air conditioner”
Provided with Indoor unit of the air conditioner.
2. Connecting an connector cable to the air conditioner
Models for which the mounting
cord clamp is used
Models for which the fastener
is used
Fastener
Mounting
cord clamp
Connection manual
1. Accessory
Part name
Illustration Q' ty
Mounting cord
clamp
1
Screw for
mounting
4×16
1
Fastener
(for bundling the
wires)
1
NOTE1:
The Backup heating function changes to be enabled or disabled according to
the ambient temperature.
Relay (heater) turns ON or OFF by the difference between the room
temperature and the set temperature.
CN24
Flow chart for setting the ambient temperature to enable/disable the backup heating function
Entering the setup mode for the ambient temperature to enable/disable the function
Turn ON the power supply.
<Preparation of the remote controller>
1. While pressing both OPERATION SELECT button and FAN SPEED button on the remote controller at
the same time, press RESET button.
2. First, release RESET button.
Hold down the other two buttons for another 3 seconds. Make sure that the COOL( )OPERATION and
DRY( )OPERATION on the LCD screen shown in the right figure are displayed. Then release the buttons.
Deleting the memorized abnormal condition
1. Press OPERATION SELECT button, and the setup screen for the ambient temperature to
enable the function will appear. *2
2. Press OPERATE/STOP (ON/OFF) button on the remote controller with the remote controller
headed towards the indoor unit. *1
3. Press EMERGENCY OPERATION switch so that the memorized abnormal condition is deleted.
Selecting the ambient temperature to enable the function
On the setup screen for setting the ambient temperature to enable the function, press TEMP (+) or
TEMP (-) button to adjust the ambient temperature to enable the function. *2 *3
Setting the ambient temperature to enable the function
Before pressing OPERATE/STOP (ON/OFF) button, make sure that no beep is heard.
Press OPERATE/STOP (ON/OFF) button on the remote controller (the COOL ( ) OPERATION is displayed)
with the remote controller headed towards the indoor unit. *1
The beep sounds when the setup has been completed successfully.
Selecting the ambient temperature to disable the function
On the setup screen for setting the ambient temperature to disable the function, press TEMP (+) or TEMP (-)
button to adjust the ambient temperature to disable the function. *2 *3
Setting the ambient temperature to disable the function
Before pressing OPERATE/STOP (ON/OFF) button, make sure that no beep is heard.
Press OPERATE/STOP (ON/OFF) button on the remote controller (the DRY ( ) OPERATION is displayed)
with the remote controller headed towards the indoor unit. *1
The beep sounds when the setup has been completed successfully.
Are both ambient temperatures to enable and disable the function set?
Releasing the setup mode for the ambient temperature to enable/disable the function
Press FAN SPEED button on the remote controller with the remote controller headed towards the indoor unit. *1
Setting the ambient
temperature to enable
the function
Setting the ambient
temperature to disable
the function
Lit
Not lit
*3 When the selected temperature is below 0 degrees
Celsius, the icon [
] to the left of the temperature on
the LCD screen will be lit.
[ ]
Lit
Not lit
[ ]
[ ] [ ]
*1 A short beep is emitted once the signal is received.
*2 The COOL (
) OPERATION and DRY (
) OPERATION
on the LCD screen changes as follows by pressing
OPERATION SELECT button.
