Fujitsu Halcyon HFI Quick Installation Manual
Copyright © Fujitsu General America, Inc.
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Quick Installation Guide
for Halcyon HFI Systems
Checklist
AOU48RLXFZ Outdoor Condensing Unit
Separation Tube Assemblies
– when using more than one branch box
Branch boxes
– primary used for 1-3 indoor units
– secondary used when installing more than 3 units
Correctly sized line sets (both lines insulated separately)
2 to 8 Indoor units Halcyon HFI type (RLF)
Pipe, wire, fittings, and mounting hardware
R410a adaptor(s) Part# K9R410A55
Nitrogen & regulator to purge lines
Vacuum pump, micron gauge and torque wrench
Normal tools for mini-split installation
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• This is a quick installation guide not intended to
replace the actual installation manual. For
complete instructions follow the installation manual
that is included with each piece of equipment.
• Don’t take shortcuts and Don’t follow any “rule
of thumb”
• Always follow Local, State & Federal codes during
installation
• Don’t connect power to the equipment until you are
ready to start and test.
• Adhere to all safety and installation warnings on
the installation instructions for this equipment.
• Long piping can limit capacity. Please refer to the
Design & Technical Manual for details.
Things to Note
Use this Quick Installation Guide to install Halcyon HFI Systems. Use the Installation Manual
provided in the box only where this Guide asks you to refer to it for more information.
To download the newest full Installation Manual, go to http://portal.fujitsugeneral.com.
This is an Installation Guide and is not a replacement for proper system design. Please
refer to the Design & Technical Manual for complete design limitations and capacity tables.
Copyright © Fujitsu General America, Inc.
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5a
Branch Boxes Unit Placement
Branch Boxes: Special Precautions
When installing
Branch Boxes:
• Always install and tighten required flare adapters
BEFORE installing or attaching Branch Box to the
wall or ceiling especially in a confined space.
• Always tighten any flare caps on unused circuits.
• If you use pre-flared refrigerant pipes: Remember
to remove the rubber end plug before attaching!
- Unless line set flares are R410a rated, cut
them off and re-flare using R410a rated
flare nuts.
12” Clearance
8 in.
8 in.
2 in.
20 in.
40 in.
60 in.*
For 16 additional
placement options,
please refer to the
installation manual
Above pad and
anticipated snow depth
WHEN WIRING
ELECTRICAL SHOCK CAN CAUSE
SEVERE PERSONAL INJURY OR
DEATH. ONLY A QUALIFIED,
EXPERIENCED ELECTRICIAN
SHOULD ATTEMPT TO WIRE
THIS SYSTEM.
• Do not supply power to branch boxes or outdoor unit until
refrigerant charging is completed.
• Highly dangerous electrical voltages are used in this
system. Carefully refer to the wiring diagram and these
instructions when wiring. Improper connections and
inadequate grounding can cause accidental injury or death.
• Ground the unit following local electrical codes.
• Connect all wiring tightly. Loose wiring may cause
overheating at connection points and a possible fire hazard.
40 in. to 60 in.*
12 in.
20 in.
* 60 inches or more
above when installed in
a confined space.
5b
• Knock out holes are provided for wiring (Fig. A)
• Knock out holes are provided 2 each in the same
size in front, lateral, and rear sides (Fig. B)
Knock Out Holes
Fig. A Fig. B
Copyright © Fujitsu General America, Inc.
6
Basic Wiring Overview
Refer to installation manual for complete wiring and design criteria.
39,000 Btu Minimum connected capacity
62,000 Btu Maximum connected capacity
Outdoor Unit Electrical Requirements.
40A Breaker 8AWG 2+Ground
*Caution:
When installing this system in high humidity
locations, install using ground fault equipment
breakers (often referred to in other countries
as an ELCB earth leakage current breaker) to
reduce the risk of leaking current which may
result in electric shock or potential fire. We
suggest installing GFEB breakers or follow
local electrical code. This system uses an
inverter, which means that when used with a
ground fault breaker you must use breakers
that can handle higher harmonics such as a
(GFEB) Ground Fault Equipment Breaker
(30 mA or greater) in order to prevent
malfunctioning of ground fault device.
*
*
1 - Communication wires [Outdoor unit to Primary (Branch Box) B.B.]
2 - Communication wires [Primary B.B. to Secondary B.B.]
3 - Central remote controller wires [Central remote controller to B.B.]
4 - Power supply and Communication wires [B.B. to indoor units]
5 - Power supply [Outdoor unit]
6 - Power supply [Branch Box]
7 - Remote control wires [Indoor units to Remote Controller]
Branch Box 3
Secondary
Circuit Breaker
(over current)
Earth Leakage
Breaker*
Indoor Units
Power
Supply
Branch Box 2
Secondary
Circuit Breaker
(over current)
Earth Leakage
Breaker*
Power
Supply
Branch Box 1
Primary
Circuit Breaker
(over current)
Earth
Leakage
Breaker*
Power
Supply
Central Remote
Control
Outdoor Unit
Circuit Breaker
(over current)
Earth
Leakage
Breaker*
Power
Supply
5
1
3
4
7
6
2
6
8
6
WARNING!
Do not turn on power to system or branch boxes before
completing full evacuation and refrigerant charging!
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8
Copyright © Fujitsu General America, Inc.
Piping Restrictions
Refrigerant Pipe Sizes
Liquid Adaptor Gas
Branch
Box
to
Indoor
Unit
7,000 BTU
1/4”
1/2” to 3/8”
adaptors
included
(3 of each)
3/8”9,000 BTU
12,000 BTU
18,000 BTU 1/4” 1/2”
24,000 BTU 1/4”
1/2” to 5/8”
adaptors
included
(3 of each)
5/8”
Outdoor Unit
Branch Box
Separation Tube
Assembly Kit
Liquid pipe 3/8 inch
Gas pipe 5/8 inch
=
Branch Box
Branch Box
Flare connections
=
Flare connections
=
Liquid pipe 1/4 inch
Gas pipe 3/8”, 1/2”, or 5/8”
based on indoor unit size*
=
*Branch box outlets are all 1/2” on gas pipe connections.
1/2” to 3/8” adaptors and 1/2” to 5/8” adaptors included (3 of each).
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Copyright © Fujitsu General America, Inc.
10a
Pipe Length
Pipe Limitation Limitations
Allowable
pipe length
(actual pipe
length)
Total Pipe Length Up to 377 ft.
Between outdoor unit and the farthest indoor unit Up to 230 ft.
Between outdoor unit and branch boxes Up to 180 ft.
Between branch boxes and indoor unit
Total Up to 197 ft.
Ea. Unit 10 ft. to 49 ft.
Between outdoor unit and the first separation tube 16 ft. or more
Between outdoor unit and branch box (no separation tube) 16 ft. or more
Between outdoor unit and branch box (if separation tube used) 17 ft. or more
Vertical Positioning:
Tubes must stand straight up
or down. They CANNOT be
tilted or angled more than 10%
off perfectly vertical.
9
Horizontal Positioning:
Tubes must lay flat horizontal
They CANNOT be tilted or angled
more than 10% off Flat and Level
in either direction.
Separation Tube Assembly
Pipe Limitation Limitations
Allowable
height
difference
Between outdoor unit and indoor unit Up to 98 ft.
Between outdoor unit and branch box Up to 98 ft.
Between branch box and branch box Up to 49 ft.
Between indoor unit and indoor unit Up to 49 ft.
MINIMUM Allowable Pipe Lengths
MAXIMUM Allowable Pipe Lengths
Note: Pipe lengths must include fitting losses.
10b
Elevation
Maximum allowable height difference
Height = Elevation, not pipe length
16 Ft. Min. - if no separation tube
16 Ft. Min.
10 Feet Min.
180 Feet Max. 49 Feet Max.
230 Feet maximum to furthest indoor unit
377 Feet maximum connected pipe
98 Feet
49 Feet
98 Feet
49 Feet
Branch box to
branch box
49 Feet
Max to highest
branch box
From a branch box to its
highest indoor unit
From the lowest indoor unit
to the highest indoor unit
Max to highest
indoor unit
Outdoor unit can be above or
below evaporators
All indoor equipment must be
installed witihin the same 49 feet
of elevation from each other
1 Ft. Min.
197 Ft. Max Combined
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