•
Check to ensure that the ceiling is sufficiently strong to sustain the CH unit. If the ceiling is weak, abnormal sound and
vibration may occur.
•
The refrigerant flow sound may be heard from the CH unit when the electric expansion valve in the CH unit is activated.
Therefore, take the following action to minimize the sound.
1
Install the CH unit inside the ceiling. As for the ceiling material, select a material like a plaster board (at least 9 mm)
which minimizes operation sound.
2
Do not install the CH unit in a place near bed rooms or hospital rooms.
•
The refrigeration flow sound may be heard from the CH unit when the operation is changed to cooling/heating mode.
Therefore install the CH unit in the ceiling of corridor so that refrigerant flowing sound may not be heard in the room.
•
Do not install the CH unit in a hot or humid place like kitchen to prevent dew condensation on the outer surface of the
CH unit. When installing the CH unit in such places, apply additional insulation.
•
Pay attention to the following points when the CH unit is installed in a hospital or other facilities where there are electronic
waves from medical equipment.
1
Do not install the CH unit where the electromagnetic wave is directly radiated to the electrical box or intermediate
wiring (Operating line).
2
Install the CH unit and components as far as practical or at least 3 meters from the electromagnetic wave radiator.
3
Install a noise filter when the power supply emits harmful noises.
•
The installation place should be convenient for the refrigerant piping or electrical wiring connection.
•
Do not install the CH unit in the place with organic solvent atmospheres, such as painting and cleaning factories.
Synthetic resin material may be damaged.
•
Do not install the CH unit in the place where flammable gas may generate, drift or accumulate. Also avoid the place
where the carbon fabric may float.
¿
Suspension bolts
N O T E
•
Use a suspension bolt (W3/8, Metric screw thread: M10).
•
Prepare suitable washer and nut.
•
Use a suspension bolt with 30 to 45° sloping angle.
1
Suspension bracket 2–11 x 34 slotted hole.
2
(for suspension bolt).
3
Electrical box.
Step 1
1
Select a final location and installation direction of the CH unit paying careful attention to the space for the pipping, wiring
and maintenance.
2
Mount suspension bolts after selecting the final location of the CH unit.
3
Mount the suspension bolts in the slotted hole on the electrical box side.
4
Contact the qualified constructor or carpenter for the ceiling treatment.
Step 2
Mount suspension bolts, as shown in next figures.
2
1
3
330
23
40
Unit: mm
2 Unit installation
24
SMGB0065 rev. 1 - 12/2010
