Fujitsu AUU7RLF Design & Technical Manual page 21

 Easy installation
By using centralized valve method, new outdoor unit can be done vacuuming and opening valve
only one time.
Previous multi system
 Workable down to -15 °F (-26 °C) outdoor temperature
Outdoor unit has a built-in heater to keep it from freezing during the freezing cold mid-winter sea-
son.
The air conditioner uses highly cold resistant components that were designed to prevent freez-
ing and meet CSA standards to provide comfortable heating even when temperature fall to -15
°F (-26 °C).
Base pan heater (Built-in)
•Equipped with a base heater that prevents
condensate from freezing.
•Cultivated base design discharges melted
water through many holes.
•Without a heater, freezing condensate can
cause noise, damage to blade, condenser,
and system performance.
• Required vacuuming up to 4* times
*: In the case of 4 rooms multi system.
Automatic wiring and
piping check
A
B
C
D
- 15 -
New multi system
• Required vacuuming only one time
A
Automatic
connection
mistake fix
B
C
D
: Wiring line
: Piping line
With
base heater
Base heater