Fujitsu Mini-Split Manual page 31

Multi-Zone Outdoor Units
AOU18RLXFZ, AOU24RLXFZ, AOU36RLXFZ
Part of the Halcyon Hybrid Flex Inverter (HFI) Line
As part of the Halcyon HFI line of equipment, select indoor units are compatible with other HFI outdoor units, meaning
mix and match capabilities with fewer components.
Connectable Capacity
This function allows you to connect indoor units that can exceed outdoor unit capacity
. However, if you connect indoor units that exceed 100% of the outdoor unit's capacity there are limitations.
details)
If all indoor units are cooling or heating at the same time, the system will limit their capacity so that their total matches
the outdoor unit's capacity. When a zone meets a desired set temperature it requires less capacity. The unused
capacity is then distributed to the remaining indoor units, increasing their capacity.
For Example
The load on a 3-bedroom home with a living room and kitchen downstairs and 3 bedrooms upstairs is 39,000 BTUs (21,000
BTU downstairs and 18,000 BTU upstairs). However the family isn't upstairs and downstairs at the same time, therefore not
all units will be running simultaneously allowing 100% heating or cooling to occupied spaces. This can be achieved by our
AOU36RLXFZ outdoor unit.
Flex Zone Outdoor Unit
AOU48RLXFZ1
Halcyon HFI Flex Zone system's zoning capability allows you to set each indoor unit to a different temperature - that
means you can set up to 8 different temperatures as needed! This system provides individual temperature control
throughout your home or business so each room, zone or floor will be the temperature you set! An optional Central
Remote Control is available which can control up to all 8 indoor units from one keypad. Additionally, you can set
timers - 24-hour timer and sleep timer - for your convenience.
130% Connectable Capacity
The HFI system is rated at 48,000 BTUs but you can connect up to 130%, or 62,000 BTUs of rated indoor unit
capacity to the AOU48RLXFZ1. Connectable capacity allows you to connect indoor units that can exceed outdoor
unit capacity
(See sizing guide on page 44 for details)
unit's capacity there are limitations.
If all indoor units are cooling or heating at the same time, the system will limit their capacity so that their total matches
the outdoor unit's capacity. When a zone meets a desired set temperature it requires less capacity. The unused
capacity is then distributed to the remaining indoor units, increasing their capacity.
For Example
The load on a small 2-story office building with a business downstairs and worker apartments upstairs is 62,000 BTUs
(38,000 BTUs downstairs and 24,000 BTUs upstairs) but the workers aren't upstairs and downstairs at the same time,
therefore not all units will be running simultaneously allowing 100% heating or cooling to occupied spaces.
18, 24 and 36,000 BTUs
48,000 BTUs
. However, if you connect indoor units that exceed 100% of the outdoor
18, 24, 36,000 BTUs
(See sizing guide on page 43 for
48,000 BTUs
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