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3. Installing the HBC

3.1. Checking the accessories with the HBC

The following items are supplied with each HBC.

3.2. Installing HBC

Changing position of L shape plate for Main-HBC

When changing position of L shape plates for fixing Main-HBC, remove the screws
for L shape plates, and place them to a place [A], [B], or [C] in the drawing.

[Fig. 3.2.1] (P.3)

Installing Main-HBC

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Fix L shape plate on the ground or wall by bolt.

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Vibration may be transmitted to the installation area and noise and vibration may
be generated from the floor and walls, depending on the conditions. Provide
ample vibration proofing (cushion pads, cushion frame, etc.).

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When connecting the drain piping from behind the unit, change the orientation of
the drain pan before installing the unit. (Refer to 4.5.Drain piping work.)

[Fig. 3.2.2] (P.3)

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Required specification for M10 anchor bolt: Tensile strength of 5.6 kN or more to
withstand the short-term load caused by earthquakes.

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Be sure to install the HBC horizontally.
Install the HBC level (less than 1° tilt to downward), so that the drain pan can
function correctly.

Installing hanging bolts for Sub-HBC

Install locally procured hanging bolts (threaded rod) following the procedure given in
the figure. The hanging bolt size is ø10 (M10 screw).
To hang the unit, use a lifting machine to lift and pass it through the hanging bolts.
The suspension bracket has an oval hole. Use a large diameter washer.

[Fig. 3.2.3] (P.3)



Be sure to install the HBC horizontally. Check using a level. If the
controller is installed at an angle, drain water may leak out. If the unit is
slanted, loosen the fixing nuts on the hanging brackets to adjust its
position.
Install the HBC level (less than 1° tilt to downward), so that the drain pan
can function correctly.

Caution:

•

Be sure to install the unit horizontally.
Install the HBC level (less than 1° tilt to downward), so that the drain pan
can function correctly.



Install the Sub-HBC with the hanging length within 200 mm [7-7/8 in] or
shorter.

Product weight

4. Connecting refrigerant pipes and drain pipes

4.1. Connecting refrigerant pipes

1. Be sure to use non-oxidative brazing where necessary. If you do not use non-oxi-

dative brazing, it may clog the pipes.
When brazing the outdoor unit connecting port of HBC, supply nitrogen gas into
the pipe between the outdoor unit and HBC.

2. After completing pipe connection, support the pipes to ensure that load is not

imparted to the HBC’s end connections.

3. When using mechanical couplings, use the ones that meet ISO14903.
4. Support the on-site pipes near the HBC at 0.5-meter intervals or less, and at 2-

meter intervals or less in other areas.

Warning:

When installing and moving the unit, do not charge it with refrigerant other
than the refrigerant R32 specified on the unit.

- Mixing of a different refrigerant, air, etc. may cause the refrigerant cycle to mal-

function and result in severe damage.

Caution:

•

Use refrigerant piping made of phosphorus deoxidized copper and copper
alloy seamless pipes and tubes. In addition, be sure that the inner and
outer surfaces of the pipes are clean and free of hazardous sulphur,
oxides, dust/dirt, swarf, oils, moisture, or any other contaminants.

- R32 is high-pressure refrigerant and can cause the existing piping to burst.

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Store the piping to be used during installation indoors and keep both ends
of the piping sealed until just before brazing. (Store elbows and other joints
in a plastic bag.)

- If dust, dirt, or water enters the refrigerant cycle, deterioration of the oil and

compressor failure may result.

- Infiltration of a large amount of mineral oil may cause the refrigerant oil to

deteriorate.

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Do not vent R32 into the atmosphere.

1. Size of HBC’s end connection piping

[Fig. 4.1.2] (P.3)

Model name

CMB-WM350F-AA
CMB-WM500F-AA

Item

Qty