Heater Connection - Fujitsu AIRSTAGE ARUX12TLAV2 Installation Manual

● Forced thermostat off function
["Edge" input only]
Function
Connector
setting
Ch3 of CNA03 or
60-00
CNA04
5.7.2 External output
• A twisted pair cable (22AWG) should be used. Maximum length of cable is 82 ft. (25 m).
• Use an external input and output cable with appropriate external dimension, depending on
the number of cables to be installed.
• Output voltage: Hi DC 12 V ± 2 V, Lo 0 V.
• Permissible current: 50 mA
Output select
● When indicator etc. are connected directly
Indicator 1
Indicator 2
Indicator 3
Indicator 4
Connected unit
● When connecting with unit equipped with a power supply
Connected
device 1
Connected
device 2
Connected
device 3
Connected
device 4
Relay (locally purchased)
Operation behavior
* If function setting "60" is set to "00" (*1)
Connector Output voltage
External output 1
Pins 1-2
DC 12 V
External output 2
Pins 1-3
DC 12 V
External output 3
CNB01
Pins 1-4
DC 12 V
External output 4
Pins 1-5
DC 12 V
*1: Refer to "6.3. Function setting".
*2: Refer to "5.8. Heater connection".

5.8. Heater connection

For personal safety be sure to turn the electrical power "OFF" at the main entrance (Home
Circuit Breaker Box) and at the unit control box circuit breakers before attempting any
service or maintenance operations.
Homeowners should never attempt to perform any maintenance which requires opening
the indoor unit control box panel.
This indoor unit is not equipped with a shield that covers the line voltage electrical supply
wires and the circuit breaker connections. Take precautions to prevent accidental electri-
cal shock. Be sure to turn the electrical power "OFF" at the main entrance (Home Circuit
Breaker Box) and at the control box circuit breakers before removing the front panel.
Input signal Command
OFF → ON Thermostat off
ON → OFF Normal
Controller PCB
CNB01
Controller PCB
CNB01
Status
0 V Stop
Operation
0 V Normal
Error
0 V Indoor unit fan stop
Indoor unit fan operation
External heater (single stage
0 V
model; locally purchased) off (*2)
External heater (single stage
model; locally purchased) on (*2)
WARNING
5.8.1 Wiring diagram of heaters
Breaker 1: Ground Fault Equipment Breaker (GFEB)
Breaker 2: Maximum Circuit Breaker (MAX. CKT. BKR)
NOTE:
For details of the connection terminal functions, refer to the Design & Technical manual.
Example of external heater 2 stage model
NOTE:
If the external heater 2 stage model is in-line, set the "function setting 60" to "10", "11" or
"12". Refer to "6.3. Function setting".
Power supply
External heater
Breaker 1
(2 stage model)
(locally purchased)
Breaker 2
Breaker 1
External
Breaker 2
heater 1
(First stage)
External
heater 2
(Second
stage)
Disconnect switch
(locally purchased)
For connection to each terminal, use the connector of the following optional parts.
• CN112: UTY-XWZXZK
• CNB01: UTY-XWZXZC
Example of external heater single stage model (AC 24 V controlled)
Power supply
External heater
(Single stage model)
Breaker 1
(locally purchased)
Breaker 2
Disconnect switch
(locally purchased)
For connection to the terminal, use the connector of the following optional parts.
• CN112: UTY-XWZXZK
Example of external heater single stage model (DC 12 V controlled)
Power supply
External heater
(Single stage model)
Breaker 1
(locally purchased)
Breaker 2
External
heater 1
Disconnect switch
(locally purchased)
For connection to the terminal, use the connector of the following optional parts.
• CNB01: UTY-XWZXZC
5.8.2 Indoor unit fan setting for external heater
Fan setting when turning on output to the connected external heater can be set by changing
Dip switch on controller PCB. For the Dip switch on the controller PCB, refer to "5.6.1 Con-
nector and DIP switch position".
Fan setting when on is
Dip switch
output to the external
[SET 2 SW3]
heater
Off Off
On (Factory setting) On
NOTE:
In the following cases, set the "DIP switch SET 2 SW3" to "off" and set the function setting
"79" to "00: Disable". Refer to "5.6.1 Connector and DIP switch position" and "6.3. Func-
tion setting".
• When not using any external heaters.
• When the external heater is not in-line.
Power
PCB
AC 24 V
CN112
Controller
PCB
DC 12 V
CNB01
Relay
(locally purchased)
Power
PCB
External
heater 1
AC 24 V
CN112
Controller
PCB
CNB01
DC 12 V
Relay
(locally purchased)
Explanation
For the fan setting details, refer to the
Design & Technical manual.
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