Fujitsu AJ 126LELDH Series Design & Technical Manual page 987

• Example 2:
– Individual connection
– Function setting for Fan setting when cooling thermostat off
Number 49-01 (Stop)
Forced thermostat off is one of the energy-saving functions. For example, when using ventilator at
condition of the outdoor temperature is lower than the indoor temperature, indoor unit of air condi-
tioner stops based on the received signal from external controller. (Cooling only)
Cooling operation
(Thermostat on)
[System diagram example]
Except Indoor unit
Except indoor unit and
and External wire
External wire (service
oo r unit E xte rn a l Inp u t
(service parts) are
parts) are procured at
re(S e rvice p arts)
procured at field.
field.
3-1. External input
Direct digital
controller
Thermistor
Ventilator
Thermistor
Indoor Outdoor
temperature
temperature
28˚C 31˚C
External input wire
Indoor unit
Fan stop
(Thermostat off)
Relay
Indoor
temperature
31˚C
Ventilator
- (08-19) -
Thermistor
Thermistor
Outdoor
Indoor
temperature
temperature
28˚C 24˚C
External controller
Outdoor
thermistor
Indoor
thermistor
Outdoor
temperature
28˚C
3. Indoor unit