4
Specifications subject to change without notice. IM-40MBAA-01
INSTALLATION REQUIREMENTS
Review the following information before installing the unit:
• Install the unit in a location within the room that allows uniform
airflow in all directions.
• Do not install the indoor units near a direct source of heat such as
direct sunlight or a heating appliance.
• Allow sufficient space for airflow and unit servicing. See Fig. 7 for
the minimum required distances between the unit and the walls or
ceilings.
• All wiring and refrigerant lines must be at least 3 ft. (1m) away
from all electromagnetic interference (televisions, radios, etc.)
sources. Interference is still possible even if this distance is
maintained.
• Ensure the hanger is strong enough to withstand the unit’s weight.
• If the indoor unit is installed in an unconditioned space,
running for long periods of time when the temperatures are
outside the recommended indoor unit operation ranges, it is
recommended to seal all the corners of the indoor unit to
prevent any leakage and add insulation material (13/32 to 13/
16 in (10-20 mm)) to the entire surface of the indoor unit to
avoid condensation or heat transfer.
NOTE:
Nuisance sweating may occur if the unit is installed in a high
humidity environment with low airflow.
Table 3 — Operating Range
If the unit is installed outside the operating range it is recommended to
install a return air temperature button sensor.
Return Temperature Sensor
- A button sensor (
p/n 40VM900009 -
sold separately)
may be used for situations where a indoor ducted
unit is reading an inaccurate room temperature due to installation
factors. The button sensor kit has a length of 66ft (20m). Replace the
factory T1 sensor, which can be found inside the indoor unit. The
sensor may be installed on the wall or ceiling. Airflow must be
considered for accurate sampling.
Fig. 5 —
Button Sensor
NOTE:
A temperature compensation correction may be necessary
depending on the installation location of the unit. Consult the wireless
remote controller’s service manual for advanced steps on temperature
compensation.
NOTE: DO NOT
install the indoor or outdoor units in a location with
special environmental conditions. For those applications, contact your
Ductless representative.
OPERATING RANGE
MIN/MAX °F (°C)
Cooling
Heating
Indoor DB
62 / 90 (17 / 32)
32 / 86 (0 / 30)
Indoor WB
59 / 84 (15 / 29)
PRODUCT INSTALLATION
• Installation must be performed by an authorized dealer or
specialist. A defective installation can cause water leakage,
electrical shock, or fire.
• The installation must be performed according to the installation
instructions. Improper installation can cause water leakage,
electrical shock, or fire. (In North America, installation must be
performed in accordance with the requirements of NEC or CEC
by authorized personnel only.)
• Contact an authorized service technician for repair or
maintenance of this unit. This appliance must be installed in
accordance with local codes.
• Only use the included accessories, parts, and specified parts for
installation. Using non-standard parts can cause water leakage,
electrical shock, fire, or unit failure.
• Install drainage piping according to the instructions in this
manual. Improper drainage may cause water damage to your
home and property.
• For units that have an auxiliary electric heater,
DO NOT
install
the unit within 3 feet (1 meter) of any combustible materials.
•
DO NOT
install the unit in a location that may be exposed to
combustible gas leaks. If combustible gas accumulates around
the unit, it may cause a fire.
•
DO NOT
turn on the power until all work has been completed.
• When moving or relocating the system, consult experienced
service technicians for the disconnection and re-installation of
the unit.
WARNING
Securely install the indoor unit on a structure that can sustain its
weight. If the structure is too weak, the unit may fall and cause
personal injury, unit and property damage, or death.
DO NOT
install the indoor unit in a bathroom or laundry room as
excessive moisture can short the unit and corrode the wiring.
WARNING
Install the indoor and outdoor units, cables and wires at least 3.2 ft
(1m) from televisions or radios to prevent static or image
distortion. Depending on the appliances, a 3.2 ft (1m) distance may
not be sufficient.
If the indoor unit is installed on metal, it must be electrically
grounded.
CAUTION