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Expansion Valve Kit EV-.5N
Installation & Operation Manual
2.5 Installation of expansion valve kit
1. Pay special attention to the following points when the expansion valve kit is installed in a hospital or other facilities where
electronic wave from medical equipment is radiated.
a. Do not install the expansion valve kit where electromagnetic wave is directly radiated to the electrical box in the expansion
valve kit.
b. Install the expansion valve kit at least 3 meters away from the electromagnetic wave radiator.
c. Install a noise filter when noise is emitted from the power supply.
2. Do not install the expansion valve kit where generation, flowing, staying or leakage of flammable gas may occur.
3. When the false ceiling contains high humidity, dew condensation water may occur on the outer surface of the expansion valve
kit. Therefore utilize the insulation on the outer surface of the expansion valve kit.
2.5.1 Installation Location
1. Installation methods are selectable according to the dimension of the false ceiling. (Refer to the item 2.5.2)
2. Follow the arrow direction on the expansion valve kit for the piping connection. (Refer to the item 2.5.2)
3. Keep the distance between the indoor unit and the expansion valve kit for the piping length of 3 to 5m. Also the elevation
difference between the indoor unit and the expansion valve kit must be no more than 2m.
4. Check the ceiling slab is strong enough. If the ceiling slab is too weak to support the weight of the expansion valve kit, noise
and vibration may occur.
5. Secure proper space around the expansion valve kit for operation and maintenance work. Also a service access door should
be prepared in order to remove the expansion valve kit without getting rid of the ceiling plate. (Refer to the item 2.5.2)
6. Select a suitable and convenient location for the refrigerant piping connection.
7. Do not install the expansion valve kit in a kitchen where vapor or mist flows. Dew condensation water may occur on the
expansion valve kit while cooling operation. In this case, utilize the insulation.
8. Do not install the expansion valve kit in a organic solvent (thinner or benzine) environment. Synthetic resin parts may dissolve.
9. Do not install the expansion valve kit where generation, flowing or staying of flammable gas may occur. Do not install where
carbon fabric floats.
10. The sound of refrigerant running through from the expansion valve kit may be heard (approx. 38dB within 1m). Therefore
install the expansion valve kit where the sound will not leak such as in the false ceiling of a hall way.
11. Use ceiling material with sound-proof such as plaster board.
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PMML083A - 07/2008
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