Quick Setup Guide

4
Mounting Options
After an installation area for the outdoor unit(s) is chosen, verify:
• The floor surface / chosen location has enough strength to
support the weight of the unit(s) and base.
• There is enough space for piping and wiring (when installed
through the bottom of the unit [Multi F MAX outdoor units only).
• The area has sufficient slope for drainage around the foundation
to ensure condensate thoroughly flows away from the outdoor
unit condensate drain connection(s) to a drain (if present).
• Run-off from defrost mode will not accumulate and freeze on
sidewalks or driveways.
• Avoid placing the unit(s) in a low-lying area where water may
accumulate.
• If installing the outdoor unit on a roof, check the strength of the
roof.
• When installing on a wall (with field-supplied brackets), roof, or
rooftop, securely anchor the mounting platform with nails and / or
wiring, taking into consideration the possibility of strong winds or
earthquakes.
Bolting the Outdoor Unit to the Platform (Piping Location May
Differ Depending on Outdoor Unit Model).
Outdoor Unit Platform Concrete Specifications
• Concrete foundations must be made of one part cement, two
parts sand, and four parts gravel.
• The surface of the foundation must be finished with mortar with
rounded edges, and weatherproofed.
• Ensure that the concrete platform will not degrade easily, and
has enough strength to bear the weight of the unit.
• Concrete height must be a minimum of four (4) to eight (8)
inches high, depending on the outdoor unit. See the complete
Multi F / Multi F MAX Installation Manual to review height, width,
etc., platform requirements for each specific outdoor unit.
Close up of a Bolt Attachment.
Bolting the Outdoor Unit
• All four corners of the outdoor unit must be supported properly,
and securely fastened.
• Include an H-beam support. Attach the corners firmly, otherwise
the support will bend.
• If not otherwise directed by a structural engineer or local codes,
use a M10J bolt inserted at least three (3) inches deep into the
supports. Tightly anchor the outdoor unit with the bolt and a
hexagon nut.
• If there is a possibility of vibration from the outdoor unit
transmitting to the building, add an anti-vibration material to the
platform.
• Seal all wiring and piping access holes with field-supplied sealing
material to prevent animals and bugs from entering the unit.
Example of Using an Insert for a Hole in a Reinforced Concrete
Beam.
Bolt
Piping Connections
M10
Anchor Bolt
3
13/16
Unit: Inch
Concrete Beam
Insert
Suspension Bolt
Polyblock /
Anti-Vibration
Material
Nail Securing
Polyblock
Tools
Verify the tools listed below are available for use at the installation site:
• Screw Drivers
(JIS for terminal screws, Flat, Phillips)
• Pliers
• Wire Strippers, Cutters, and Crimpers
• Hammer
• Adjustable Wrenches
• Drill and Bits
• Hole Saw
• Utility Knife
• Drop Cloth
• Pipe Cutter / Reamer
• Acetylene Brazing Outfit
• Brazing Material —15 % silver only
• Digital Multimeter and Amp Clamp
• R-410A Flaring Tool
• Torque Wrench Set
• Dedicated R-410A Refrigerant Manifold Gauge
• Dedicated 5/16" Premium Hoses
• Nitrogen regulator (for 550# test)
• 1/4" to 5/16" Hose Adapters (if needed)
• Nitrogen Tank
• Electronic Leak Detector
• 5/16" Schrader Core Removal Tool
• Vacuum Micron Gauge
• Good Quality Digital Charging Scale
• Vacuum Pump and Fresh Oil
• Refrigerant Recovery Unit and Tank
Piping
Multi F System Piping
Multi F outdoor units have two (2), three (3), or four (4) sets (one
vapor and one liquid) of flare-type piping connections. Number of
connections will differ depending on outdoor unit. Field-installed
piping directly links one set of outdoor unit connections to one
indoor unit.
Depending on the indoor unit piping size, connection sockets
(included as factory-supplied accessories with the indoor units)
may need to be used. See the complete Multi F / Multi F MAX
Outdoor Unit Installation Manual for specific information.
Multi F MAX System Piping
Field piping for Multi F MAX outdoor units can be installed in one
of four directions: front, rear, right, and bottom. Whatever direction
is chosen, plug the access holes with field-provided putty or
insulation to fill all gaps. If the piping is installed in the bottom
direction, the access hole of the base pan must be knocked out
before piping work begins.