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2.4 acceSSorieS
Check the following accessories packed with the expansion valve kit before installation.
accessory
Insulation
Cord clamp
Piping cover
Cord clamp
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 flammable gases may generate, flow, stay or leak, and where carbon fiber may float.
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 Installation Method")
2 Follow the arrow direction on the expansion valve kit for the piping connection. (Refer to the item "2.5.2 Installation Method")
3 Keep the distance between the indoor unit and the expansion valve kit for the piping length of 3 to 5m. Also the height 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
Method")
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 The sound of refrigerant running through from the expansion valve kit may be heard (approx. 38dB(A) within 1m). Therefore
install the expansion valve kit where the sound will not leak such as in the false ceiling of a hall way.
10 Use ceiling material with sound-proof such as plaster board.
3
PMML0268A rev.4 - 02/2020 - P5416576
Q'ty
purpose
2
For refrigerant piping connection
6
For fixing insulation
1
For protecting relay connector
2
For fixing piping cover
method
Refer to the item
"3 Refrigerant Piping Work"
"2.5.2 Installation
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