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Refrigerant Piping System Installation
Due to our policy of continuous product innovation, some specifications may change without notification.
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MULTI
F
MAX
MULTI
F
Special Applications
If an additional drain hose is necessary, the end of drain outlet must
be routed above the ground. Secure the drain hose appropriately.
When the Outdoor Unit is Installed Below the Indoor Unit:
1. Use a conduit, piping set cover, or bundle the (separately) insu-
lated refrigerant piping, the drain hose, and the communications /
connection (power) cable together.
2. Make sure to include some slack in the wiring. Wiring must be
installed in an upwards direction to prevent water from accessing
into the control box.
3. Secure the conduit, piping set cover, or bundle along the outside
wall using saddles or a similar type of piping support.
4. Seal any openings in the wall that are around the piping.
Figure 62: Bundling the Connection Components (From Outdoor Unit to
Indoor Unit / Branch Distribution Unit [Multi F MAX systems only]).
Vinyl tape (narrow)
Connection pipe
Connecting cable
Vinyl tape (wide)
Wrap with vinyl tape
Indoor unit pipe
Pipe
When the Outdoor Unit is Installed Above the Indoor Unit:
1. Use a conduit, piping set cover, or bundle the (separately)
insulated refrigerant piping and the communications / connection
(power) cable together up to the outdoor unit service valves.
2. Make sure to include some slack in the wiring. Wiring must be
installed in upwards direction to prevent water from traveling into
the control box.
3. If necessary, secure the conduit, piping set cover, or bundle
along the outside wall using saddles or a similar type of piping
support.
4. Ensure the insulated drain hose from the indoor unit is installed
away from the outdoor unit, and in a downwards direction. If nec-
essary, secure along the outside wall using saddles or a similar
type of support.
5. Seal any openings in the wall that are around the piping.
Figure 63: Special Applications.
BUNDLING AND SPECIAL
APPLICATIONS
Bundling
If a conduit or piping set cover is not used on the connection from
the outdoor unit to the interior, bundle both insulated refrigerant
pipes, the drain hose, and outdoor unit to indoor unit / branch distri-
bution unit communication / connection (power) cable together with
wide vinyl tape.
1. Piping must be fully encased in insulation material: Overlap the
field installation piping insulation material and the indoor unit
piping insulation material.
2. Bind together the two pipes, using vinyl tape. Make sure there
are no gaps during the binding.
3. Be sure the cutting line is placed upward.
4. Wrap the rear piping section with narrow vinyl tape.
5. Continue to wrap the indoor unit pipe as connected to the outdoor
connection pipe.
6. Using a wider vinyl tape, bundle the piping and drain hose
together.
• Tape must be sufficient to cover the piping in order to fit into the
rear piping housing area at the back of the indoor unit.
Insulation
Drain Hose
Piping
Communication
Cables
Power Wiring
Seal the small access hole
in the wall around the piping.
Outdoor Unit Below Indoor Units
Outdoor Unit Above Indoor Units
Seal the small access hole
in the wall around the piping.
Drainage from the Indoor Units
Drainage from the Indoor Units
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