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Mitsubishi Electric Air Conditioner CITY MULTI
Twinning Kit Installation Manual
¡For your safety, thoroughly read the following instructions prior to installation.
¡Thoroughly read the following "Safety Precautions" to ensure proper installation.
¡Observe the following important safety precautions at all times.
¡Hazards that can occur from incorrect handling are classified by the symbols below:
WARNING
Incorrect handling can result in death or serious injury.
CAUTION
Incorrect handling can result in bodily injury and/or structure damage.
Only a dealer or qualified technician should
perform installation.
¡Improper installation may result in refrigerant gas leakage
and equipment damage.
Do not make any modifications or alterations.
Consult your dealer for repair.
¡Improper installation may result in water leakage, electric shock,
or fire.
In the event of a refrigerant leak, thoroughly
ventilate the room.
¡If refrigerant leaks and comes in contact with an open flame,
toxic gases will be generated.
Properly dispose of packing materials.
¡Plastic bags can pose suffocation and choking hazards: keep
them out of the reach of children. Tear the plastics bags
before disposing of them.
❈ See the Installation Manual that came with the outdoor unit for installation instructions.
Safety Precautions
WARNING
Properly install all parts according to the
instructions in the Installation Manual.
¡If the wrong twinning pipe or wrong size connecting pipe is
used, air conditioning performance will suffer.
When installing or relocating the unit, check
that no substance other than the specified
refrigerant (R410A) enters the refrigerant circuit.
¡Any presence of foreign substance or air can cause abnormal
pressure rise or explosion.
After installation, check for a refrigerant leak.
¡If leaked refrigerant comes in contact with a heat source,
such as a fan heater, stove, or electric grill, toxic gases will be
generated.
CAUTION
Do not touch the refrigerant pipes and
refrigerant circuit components with bare
hands during and immediately after operation.
¡During or immediately after operation, certain parts of the unit
such as pipes and compressor may be either very cold or hot,
depending on the state of the refrigerant in the unit at the
time. To reduce the risk of frostbites and burns, do not touch
these parts with bare hands.
1
CMY-Q100VBK
WT05688X01
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Summary of Contents for Mitsubishi Electric CITY MULTI CMY-Q100VBK
- Page 1 Mitsubishi Electric Air Conditioner CITY MULTI Twinning Kit Installation Manual CMY-Q100VBK WT05688X01 ¡For your safety, thoroughly read the following instructions prior to installation. Safety Precautions ¡Thoroughly read the following “Safety Precautions” to ensure proper installation. ¡Observe the following important safety precautions at all times.
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Page 2: Confirming The Package Contents
1. Confirming the Package Contents The following items are included with the Twinning Kit (CMY-Q100VBK). Verify that all items are present before starting installation. ❈ Always use the twinning pipes included in the kit when preparing the twinning kit. If the field-supplied pipes do not fit the parts in the kit, use the accessory piping parts listed below. (1) Package contents 1Low-pressure 2High-pressure... - Page 3 (2) Connecting the twinning pipe kit (1) Braze the high-pressure pipe (6) to the refrigerant service valve. (2) Screw down the low-pressure twinning pipe kit (1) to the sheet metal of the refrigerant service valve with the screws (3), and braze it to the refrigerant service valve. (3) Braze the elbow (5) to the field-piping first, and then braze it to the low-pressure twinning pipe kit (1).
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Page 4: Pipe Connection Example
3. Pipe Connection Example Connect the pipes between heat source units, referencing the figure below. 1Low-pressure twinning kit ID22.2 [7/8] -ID25.4 [1] Low-pressure connecting pipe (Between heat source units) Main low-pressure pipe (To BC controller) 2High-pressure twinning pipe Main high-pressure pipe (To BC controller) 4. - Page 5 Related Links Model Number: CMY-Q100VBK CMY-Q100VBK Installation Manual (WT05688X01)