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When a wireless controller is used, locate at a distance of at least 3.3 ft. (1m) between the indoor unit and 

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Do not install the unit in any location where animals and plants can come into direct contact with the outlet air 

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Do not install the unit with any downward slope to the side of the drain adapter. If you do, you may have drain 

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Be sure the condensate hose discharges water properly. If connected incorrectly, it may cause leaks. 

 

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Do not install the unit in any place where oil can seep onto the units, such as table or seating areas in 
restaurants, and so forth. For these locations or social venues, use specialized units with oil-resistant features 
built into them. In addition, use a specialized ceiling fan designed for restaurant use. These specialized oil-
resistant units can be ordered for such applications. However, in places where large quantities of oil can splash 
onto the unit, such as a factory, even the specialized units cannot be used. These products should not be 
installed in such locations. 

Installation Precautions

To reduce the risk of serious injury or death, the following installation precautions 
must be followed:

 

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When installing the unit into…

 

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strong wood or metal frame to provide added support.

 

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A room: Properly insulate any refrigerant tubing run inside a room to prevent “sweating” that can cause 

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Moist or uneven locations: Use a raised concrete pad or concrete blocks to provide a solid, level 
foundation for the unit to prevent water damage and abnormal vibration.

 

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An area with high winds: Securely anchor the outdoor unit down with bolts and a metal frame. Provide a 

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A snowy area: Install the outdoor unit on a raised platform that is higher than drifting snow. Provide snow 
vents.

 

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product failure.

 

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Where oil (including machinery oil) may be present.

 

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hot spring.

 

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Where the air quality is of high acidity.

 

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Where harmful gases can be generated from decomposition.

 

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Do not position the condensate pipe for the indoor unit near any sanitary sewers where corrosive gases may 
be present. If you do, toxic gases can seep into breathable air spaces and can cause respiratory injuries. If 

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possessions may result. If the condensate piping becomes clogged, water may drip from the indoor unit. Do 
not install the indoor unit where such dripping can cause moisture damage or uneven locations: Use a raised 
concrete pad or concrete blocks to provide a solid, level foundation for the unit to prevent water damage and 
abnormal vibration.

 

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Perform a test run to ensure normal operation. Safety guards, shields, barriers, covers, and protective devices 

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any moving parts. 

 

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inside the unit being installed.

After installation work for the system has been completed, explain the “Safety Precautions” use and maintenance 
of the unit to the customer according to the information in all manuals that accompanied the system. All manuals 
and warranty information must be given to the user or left near the Indoor Unit.

Summary of Contents for Hitachi MW-NP282A3

Page 1: ... manual may be reproduced in any way without the expressed written consent of Johnson Controls Hitachi Air Conditioning Ɣ This heat pump air conditioning unit will be operated and serviced in the United States of America and comes with a full complement of the appropriate Safety Danger and Caution warnings Ɣ If you have questions please contact your distributor or dealer Ɣ This manual provides com...

Page 2: ...inside the indoor or outdoor units All safety features disengagement and interlocks must be in place and functioning correctly before the equipment is put into operation If these devices are improperly adjusted or tampered with in any way a serious accident can occur Never bypass or jump out any safety device or switch Ɣ Johnson Controls Hitachi Air Conditioning will not assume any liability for i...

Page 3: ... DLU EDႉH ƕ A snowy area Install the outdoor unit on a raised platform that is higher than drifting snow Provide snow vents Ɣ R QRW LQVWDOO WKH XQLW LQ WKH IROORZLQJ SODFHV RLQJ VR FDQ UHVXOW LQ DQ H SORVLRQ UH GHIRUPDWLRQ FRUURVLRQ RU product failure ƕ SORVLYH RU ÀDPPDEOH DWPRVSKHUH ƕ KHUH D UH RLO VWHDP RU SRZGHU FDQ GLUHFWO HQWHU WKH XQLW VXFK DV QHDUE RU DERYH D NLWFKHQ VWRYH ƕ Where oil inclu...

Page 4: ... WKH XQLW V intended home country or market Johnson Controls Hitachi Air Conditioning distributors similarly are only authorized to provide refrigerants that have been approved for use in the countries or markets they serve The UHIULJHUDQW XVHG LQ WKLV XQLW LV LGHQWL HG RQ WKH XQLW V IDFHSODWH DQG RU LQ WKH DVVRFLDWHG PDQXDOV Q DGGLWLRQV RI UHIULJHUDQW LQWR WKLV XQLW PXVW FRPSO ZLWK WKH FRXQWU V U...

Page 5: ...door or outdoor units without turning OFF the main power supply Ɣ IWHU VWRSSLQJ RSHUDWLRQ EH VXUH WR ZDLW DW OHDVW YH PLQXWHV EHIRUH WXUQLQJ Rႇ WKH PDLQ SRZHU VZLWFK Otherwise water leakage or electrical breakdown may result Disconnect the power supply completely before attempting any maintenance for electrical parts Check to ensure that no residual voltage is present after disconnecting the power...

Page 6: ... Outdoor Unit To Indoor Unit To Main Piping ID 1 2 ID 1 4 ID 3 8 ID 3 8 ID 1 2 ID 1 2 To Outdoor Unit To Indoor Unit To Main Piping OD 1 1 8 ID 1 ID 5 8 ID 7 8 ID 3 4 ID 1 2 ID 3 8 OD 1 4 ID 5 8 OD 1 2 MW NP692A3 ID 1 2 ID 5 8 ID 1 1 8 ID 1 1 8 ID 1 ID 3 4 ID 7 8 ID 7 8 To Outdoor Unit To Indoor Unit To Main Piping ID 3 8 ID 3 4 ID 5 8 ID 1 2 ID 3 8 ID 1 2 ID 5 8 ID 5 8 ID 7 8 ID 1 4 To Outdoor Un...

Page 7: ...ard Downward Outdoor Unit Outdoor Unit Multi Kit Example Recommended From each Indoor Unit to Multi Kit use hard copper pipes that bend to prevent kinking Bending Pipe Connection Pipe Example Not Recommended Indoor Unit Straight piping does not allow for movement of the piping when it expands or contracts Hard Copper Piping will expand and contract due to temperature changes in piping Hard Copper ...

Page 8: ...W 3LSLQJ When installing pipe through the wall secure a cap at the end of the pipe Attach a cap or vinyl tape INCORRECT CORRECT INCORRECT CORRECT Do NOT place the pipe directly on the ground In case of rain attach a cap or put a plastic bag over the pipe end Attach a cap or vinyl tape INCORRECT CORRECT Attach a cap or plastic bag with rubber band Hole Rain water can enter inch mm Diameter A Min In...

Page 9: ...ld supplied insulation There should be no gaps showing After installation it is recommended that the customer retain this manual for future reference Ɣ 3HUIRUP LQVXODWLRQ ZRUN RQO ZKHQ WKH VXUIDFH WHPSHUDWXUH RI WKH SLSH PDWHULDO KDV FRROHG WR URRP temperature Anything done immediately after brazing can cause the insulation to melt Ɣ XULQJ SLSLQJ ZRUN DOZD V FRYHU RYHU RU SOXJ WKH RSHQ HQG WR NHHS...

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Page 12: ...P5416959 rev 2 2017 Hitachi Johnson Controls Air Conditioning Inc Code No LIT 1202411 Revised January 2020 ...

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