Installation
108
(Unit : mm)
Anchor bolt hole
AC090/100/120/140MXAD∗H
CAUTION
• Install a drain outlet at the lowest end around the base for outdoor unit
drainage
• When installing the outdoor unit on the roof, waterproof the unit and
check the ceiling strength.
• Make sure that the wall can support the weights of the rack and the
outdoor unit.
• Install the rack close to the column as much as possible.
Optional: Fixing the outdoor unit to a wall with a rack
Soft rubber designed to cut off vibration from
rack to wall. (not supplied with product)
Designed to cut off residual vibration from
outdoor unit to rack. (not supplied with product)
Anchor bolt
Base surface
20 mm
• Install a proper grommet in order to reduce noise and residual vibration
transferred by the outdoor unit towards the wall.
CAUTION
• When installing an air guide duct, be sure to check the following:
‐ The screws do not damage the copper pipe.
‐ The air guide duct is fixed firmly on the guard fan.
Connecting the power cables &
communication cable, and controllers
You must connect the following three electrical cables to the outdoor unit:
• The main power cable between the auxiliary circuit breaker and the
outdoor unit.
• The outdoor-to-indoor power cable between the outdoor unit and the
indoor unit.
• The communication cable between the outdoor unit and the indoor unit.
CAUTION
• During installation, make first the refrigerant connections and then
the electrical connections. If the unit is uninstalled, first disconnect the
electrical cables and then the refrigerant connections.
• Connect the air conditioner to the earthing system before making the
electrical connections.
NOTE
• Especially, if your outdoor unit is the one designed for Russian and
European markets, consult the supply authority, if necessary, to estimate
and reduce the supply system impedance before installation.
Air conditioning system examples
When using earth leakage circuit breaker (ELCB) for a single phase
MCCB
1
ELB
Main power
cable
Communication cable
Outdoor-to-indoor power cable
Earthing
Outdoor Unit
OR
Indoor Unit
ELCB
1
When using earth leakage circuit breaker (ELCB) for a 3-phase, 4-wire
system (3P4W)
ELB
Main power
cable
Communication cable
Outdoor-to-indoor power cable
Earthing
Outdoor Unit
OR
Indoor Unit
MCCB
3
ELCB
3
CAUTION
• If the outdoor unit is installed in a location vulnerable to an electric leak
or submergence, make sure to install an ELCB.
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