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Silent Operation Technology
Indoor Unit
Ultra Silent Indoor Unit Operation
Quiet 4 way Cassette
Q.
A.
Noise level during normal operation is only 21dB for the new
Only
dB
Reduced airflow resistance | Only | |
and | a redesigned shape of |
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the | heat exchanger fin |
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make very quiet operation.
dB
In general, why is the reuse of existing pipework not allowed for models with R407C or R410A HFC refrigerant?
This is because existing pipework contains moisture and chloride residue that, when mixed with compressor's ester oil, can result in a chemical reaction. Additionally, refrigerant oil sludge and corrosion within the compressor can clog up the refrigerant circuit.
between each fan blade helps to eliminate annoying noise. What’s more, the remote controlled vane significantly decreases downward air resistance for much lower noise levels.
Mitsubishi Electric’s Cleaning-Free Technology
MSZ Series, MXZ Series (except for |
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New HAB Refrigerant Oil | Exclusive Replacement Filter |
Outdoor Unit
Silent Operation
( PUHZ and Power Multi )
Operation has been made very silent by improvements to the design of the fan blades and the new grille shape. The outdoor unit is even more silent when outside temperature drops as it automatically switches to
1/2
noise
DAYNIGHT
50dB 47dB*
in | in |
cooling mode | cooling mode |
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Low-Noise Priority Function
A
Reduction of
Refrigerant Noise
Refrigerant condensed in the condenser of the outdoor unit is
Our
Refrigerant circuit lasts longer with less deterioration using the new HAB refrigerant oil*
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| Characteristics of the new | |
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| refrigerant oil | |
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| Name: HAB Oil | |
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| Oil characteristics: | |
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| 1 Difficult to dissolve in | |
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| the refrigerant. | |
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| 2 High chemical and heat | |
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| stability, uniform quality, | |
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| high fluidity and viscosity. | |
Colour of the oil | Colour of the oil at | ||
at initial stage | 10 years after use |
*Data taken from our lab: Test results equivalent to 10 years worth of use
The refrigerant oil (ester oil) used for the 10.0~25.0kw models will degrade when mixed with chemicals such as chloride found in existing pipes. To prevent oil degradation and make it possible to reuse existing pipes, Mitsubishi Electric has developed an exclusive replacement filter that uses activated charcoal to soak up chlorides.
Replacement filter (conceptual diagram)
Activated carbon
(absorbs chlorine and other chemicals)
Refrigerant | Refrigerant |
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Inlet | Filter | Outlet |
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C |
This has enabled to reduce the refrigerant noise at the LEV section, and has optimized the refrigerant distribution to each indoor unit, proving great effectiveness in the installation environment with a large piping loss (pressure loss) due to a long piping length or a large height difference.
For tenants /owner | • Reduces installation time for less disruption of business. |
• Saves installation costs. |
Advantages |
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For installer | • Installation time is reduced significantly, so you have more time to do other work. |
• Not necessary to find proper pipings for R410A refrigerant. | |
| • |
| reuse the existing pipework. |
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9 | 10 |