SiEN18-622 Ceiling Mounted Cassette Type
System Configuration 259
Do not install the air conditioner at any place where
flammable gas may leak out.
If the gas leaks out and stays around the air conditioner, a
fire may break out.
Be sure to install an earth leakage breaker.
Unless it is installed, an electric shock may result.
Be sure the air conditioner is electrically grounded.
Do not connect the grounding conductor to a gas pipe,
water pipe, lightning arrester and the grounding conductor
for a telephone.
Imperfect grounding work may result in an electric shock.
Execute complete drain piping for perfect drainage.
Incomplete piping may result in a water leakage.
The appliance is not intended for use by young
children or infirm persons without supervision. Young
children should be supervised to ensure that they do
not play with the appliance.
If the temperature or the humidity is beyond the following
conditions, safety devices may work and the air
conditioner may not operate, or sometimes, water may
drop from the indoor unit.
DB: Dry bulb temperature (°C)
WB: Wet bulb temperature (°C)
The setting temperature range of the remote control is 16°C to
32°C.
The numerical value in a parenthesis shows the operation
range of the model for Australia.
Regarding places for installation
• Is the air conditioner installed at a well-ventilated
place where there are no obstacles around?
• Do not use the air conditioner in the following places.
a. Filled with much mineral oil such as cutting oil.
b. Where there is much salt such as a beach area.
c. Where sulfured gas exists such as a hot-spring resort.
d. Where there are considerable voltage fluctuations such
as a factory or plant.
e. Vehicles and vessels.
f. Where there is much spray of oil and vapor such as a
cookery, etc.
g. Where there are machines generating electromagnetic
waves.
h. Filled with acid and/or alkaline steam or vapor
• Is a snow protection measure taken?
For details, consult your dealer.
Regarding wiring
• All wiring must be performed by an authorized
electrician.
To do wiring, ask your dealer. Never do it by yourself.
• Make sure that a separate power supply circuit is
provided for this air conditioner and that all electrical
work is carried out by qualified personnel according to
local laws and regulations.
Pay attention to running noises, too
• Are the following places selected?
a. A place that can sufficiently withstand the weight of the
air conditioner with less running noises and vibrations.
b. A place where the hot wind discharged from the air
outlet of outdoor unit and the running noises.
• Are you sure that there are no obstacles near the air
outlet of the outdoor unit?
Such obstacles may result in declined performance and
increased running noises.
• If abnormal noises occur in use, stop the operation of
the air conditioner, and then cunsult your dealer or our
service station.
Regarding drainage of drain piping
• Is the drain piping executed to perform complete
drainage?
If proper drainage is not carried out from the outdoor drain
pipes during air-conditioning operation, chances are that
dust and dirt are clogged in the pipe. This may result in a
water leakage from the indoor unit. Under such
circumstances, stop the operation of the air conditioner,
and then consult your dealer or our service station.
3. Operation range
COOLING
HEATING
OUTDOOR
UNIT
INDOOR
OUTDOOR
TEMPERA-
TURE
TEMPERA-
TURE
HUMID-
ITY
RS50 · 60
RKS25 · 35 ·
50 · 60
RXS25 · 35 ·
50 · 60
D
B
21 to 32
80% or
below
D
B
-10 to 46
(-5)
W
B
14 to 23
3MKS50
4MKS58 · 75 ·
90
3MXS52
4MXS68 · 8 0
D
B
21 to 32
80% or
below
D
B
-10 to 46
W
B
14 to 23
OUTDOOR
UNIT
INDOOR
TEMPERATURE
OUTDOOR
TEMPERATURE
RXS25 · 35
DB 10 to 30
DB -14 to 24
WB -15 to 20
RXS50 · 60
DB 10 to 30
DB -14 to 24
WB -15 to 18
3MXS52
4MXS68 · 8 0
DB 10 to 30
DB -14 to 21
WB -15 to 15.5
4. Installation site
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