Multi F Installation Manual

51
Refrigerant Piping Connections
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
should be routed above the ground. Secure and the drain hose
appropriately.
When the Outdoor Unit is Installed Below the Indoor Unit:
1. Wrap the vinyl tape around the separately insulated refrigerant
piping, the drain hose, and the communications cable / power
wiring together from the bottom to top.
2. Secure the bundle along the outside wall using saddles or a simi-
lar type of piping support.
3. Seal any openings in the wall.
• A trap is required to prevent water from entering
the outdoor unit electrical control box.
Plastic
Band
Insulation and Tape
Drain Hose
Piping
Connecting
Cables
Power Supply
Cord
Seal the small opening
around the piping.
Seal the small opening
around the piping.
Trap
Trap
Outdoor Unit Below Indoor Units
Outdoor Unit Above Indoor Units
Figure 68: Bundling the Connection Components (From Outdoor Unit to
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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. Wrap the vinyl tape around the separately insulated refrigerant
piping, the drain hose, and the communications cable / power
wiring together from the bottom to top.
2. Secure a portion of the bundle along the outside wall using sad-
dles or a similar type of piping support.
3. At the appropriate location, form a trap with the bundle to prevent
water from entering interior spaces or the electrical control box of
the outdoor unit
.
4. Secure the rest of the bundle along the outside wall using sad-
dles or a similar type of piping support.
5. Seal any openings in the wall.
Figure 69: Special Applications.
Bundling
If a conduit 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 / BD unit communication cable /
power wiring together with wide vinyl tape.
Refrigerant Piping Insulation
REFRIGERANT PIPING PREPARATION