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2.5 INSTALLATION OF EXPANSION VALVE KIT
1 Pay special attention to the following points when the expan-
sion 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 electromag-
netic 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 conden-
sation 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 dimen-
sion of the false ceiling. (Refer to the item
2 Follow the arrow direction on the expansion valve kit for the
piping connection. (Refer to the item
3 Keep the distance between the indoor unit and the expansion
valve kit for the piping length of 3 to 5m. Also the height di-
fference 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.
10
Installation
Installation
method)
PMML0268A rev.1 - 09/2015 - P5416576
5 Secure proper space around the expansion valve kit for ope-
ration 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
Installation
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 ex-
pansion 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). Therefo-
re 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.
method)
method)
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