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Concealed Duct High Static Pressure
Installation Manual
Concealed Duct High Static Pressure
Installation Manual
3 SELECTION OF INSTALLATION PLACE
Upon approval of the customer, install the air conditioner in a place that satisfies the following
conditions.
• Place where the unit can be installed horizontally.
• Place where a sufficient servicing space can be ensured for safety maintenance and check.
• Place where drained water will not cause any problem.
Avoid installing in the following places.
• Place exposed to air with high salt content (seaside area), or place exposed to large quantities of sulfide gas (hot spring).
(Should the unit be used in these places, special protective measures are needed.)
• A restaurant kitchen where a lot of oil is used or place near machines in a factory
(Oil adhering to the heat exchanger and resin part (fan) in the indoor unit may reduce the performance, generate mist or
dew drop, or deform or damage resin parts.)
• Place where organic solvent is used nearby.
• Place close to a machine generating high frequency.
• Place where the discharged air blows directly into the window of the neighbour house. (Outdoor unit)
• Place where noise of the outdoor unit is easily transmitted.
(When install the outdoor unit on the boundary with the neighbour, pay due attention to the level of noise.)
• Place with poor ventilation.
(Before air duct installation, check whether value of air volume, static pressure and duct resistance are correct.)
• Do not use the air conditioner for special purposes such as preserving food, precision instruments, or art objects, or
where breeding animals or growing plants are kept. (This may degrade the quality of preserved materials.)
• Place where any of high-frequency appliances (including inverter devices, private power generators, medical equipment,
and communication equipment) and inverter-type fluorescent light is installed.
(A malfunction of the air conditioner, abnormal control, or problems due to noise to such appliances/equipment may occur.)
• When the wireless remote controller is used in a room equipped with an inverter-type fluorescent light or at a place
exposed to direct sunlight, signals from the remote controller may not be received correctly.
• Place where organic solvent is used.
• Place where special spray is used frequently.
n Installation under high-humidity atmosphere
In some cases including the rainy season, especially inside of the ceiling may become high-humidity atmosphere
(dew-point temperature: 23°C or higher).
1. Installation to inside of the ceiling with tiles on the roof
2. Installation to inside of the ceiling with slated roof
3. Installation to a place where inside of the ceiling is used for pathway to intake the fresh air
• In the above cases, additionally attach the heat insulator to all positions of the air conditioner, which come to contact
with the high-humidity atmosphere. In this case, arrange the side plate (Check port) so that it is easily removed.
• Apply also a sufficient heat insulation to the duct and connecting part of the duct.
[Reference] Condensation test conditions
Indoor side: 27°C dry bulb temperature
24°C wet bulb temperature
Air volume: Low air volume, operation time 4 hours
n Installation space (Unit: mm)
Reserve space required for maintenance the indoor unit and service work.
REQUIREMENT
1. Attach the optional accessories (drain-up kit etc.) on the unit before installing the unit.
Also, set the check port with carrying in port to the side surface of the unit except air inlet panel.
2. Prepare the check port with carrying in port hole with the size of 600x600mm.
n Filter cleaning sign term setting
The lighting term setup of the filter sign (Notification of filter cleaning) of the remote controller can be changed according to
the condition of installation. For setup method, refer to “Filter sign setting” and “To secure better effect of heating” in the
Applicable controls of this Manual.
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200 or more Servicing space
Air flow direction
1000 or more
Check port with carrying
in port 600 × 600
Air flow direction
Concealed duct
high static pressure
Air outlet chamber Air inlet chamber
Filter chamber
Duct hose
Duct hose
Duct hose
Concealed duct
high static
pressure
<Installation example>