Space requirements
10
Space requirements
1. Refrigerant noise can be generated during MCU operation. Do not install the unit in spaces that require silence, such as
bedrooms, libraries, hospitals, oces etc.
2. Do not install the MCU in the ceiling of living spaces. Noise generated from the MCU may disrupt occupant comfort.
<Spaces with open ceiling> <Ceiling of the oce>
3. It is normally recommended to install MCU in a hallway but a bulkhead should be installed to minimize the noise from
being transferred to living area. (Refer to the below gure)
<There is no risk of noise transfer> <There is a risk of noise transfer>
MCU MCU
Bulkhead
Living area Living areaHallway HallwayLiving area Living area
J Soundproof and soundproong materials
X The place where MCU is installed and the interior walls should have a high soundproof ability.
(Bricks, Concretes, Cement)
X The ceiling where MCU is installed should be coated with quality textile that has a good soundproof function.
X Minimize the size of the hole between the walls and the pipe connection. After the installation, block the gap to prevent
noise from leaking.
4. Secure over 0.25m(0.82') of space when MCU is being xed to the concrete of the ceiling.
5. MCU may generate noise so don’t install it too close to the ceiling textile.
6. Each pipe hanger should be placed at 1.5m(4.92') interval to support its weight rmly.
If the pipe or the hanger isn’t xed rmly, the unit may fall and cause a property damage or loss of life.
7. When 'Low temperature cooling range expansion' option is set for constant cooling operation throughout the year, noise of
the MCU may get louder during wintertime. Therefore, above installation requirements must be followed.
Space requirements
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