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English-5
English-6
3
SELECTION OF INSTALLATION PLACE
CAUTION
Do not install the air conditioner at place where combustible gas may leak.
If gas leaks and is collected at surrounding the unit, the production of fire may be caused.
Cautions for Installation at a Place with the Quiet Background Sound
Upon customer’s approval, install the air conditioner at a place where satisfies the following conditions.
• Place where it can be installed horizontally.
• Place which can reserve a service space for safe maintenance or check.
• Place where there is no problem even if the drained water flows.
Apply electric insulation between metal section of the building and metal section of the air
conditioner in conformance with the Local Regulation.
Avoid the following places.
• Salty place (seaside area) or place with much gas sulfide (hot spring area)
(If selecting such a place, a special maintenance is required.)
• Place where oil (including machine oil), steam, oil smoke or corrosive gas generates.
• Place where a device generating high frequency (inverter, non-utility generator, medical apparatus, or communi-
cation equipment) is set. (A bad influence may generate by malfunction of the air conditioner, control error, or
noise for such equipment.)
As the Flow Selector unit incorporates the solenoid valve, the refrigerant sound or the operating sound of the
solenoid valve such as “Bushuu...” generates when exchanging between cooling and heating mode and during
defrost operation. Therefore, avoid installing the unit at a place with quiet background sound as follows.
(1) Rooms with quiet background sound such as bedroom, hospital, or room in a hotel.
(2) Rooms which have no ceiling and a fabric does not block the residence space from the Flow Selector
unit.
(3) Rooms which have opening port at the ceiling.
When installing the unit at the above places, separate the unit from the indoor unit (within 15 m) and install the
unit at a place so that sound does not transmit into the room such as in the corridor ceiling.
250 or more
100 or more
50 or more
250 or more
<RBM-Y1123FE, RBM-Y1803FE>
100 or more
500 or more
Outdoor unit side
Indoor unit side
Refrigerant pipe
connecting port
(Discharge gas)
Refrigerant pipe
connecting port
(Liquid)
Refrigerant pipe
connecting port
(Suction gas)
Refrigerant pipe
connecting port
(Gas)
Refrigerant pipe
connecting port
(Liquid)
Hanging bracket
Electrical parts
box cover
Check port,
450 × 450 or more
400 or more
100 or more
100 or more
400 or more
<RBM-Y2803FE >
100 or more
700 or more
Electrical parts
box cover
Check port,
600 × 600
or more
250 or more
(175)
(180)
350 or more
(Unit:mm)
<RBM-Y1123FE (When attached pipes are used)>
100 or more
50 or more
Installation space
• Make space for installation and service. (Make space to the electrical parts box cover side for service.)
• When installing the unit inside the ceiling, be sure to create a check port.
The check port is required when the unit is installed and serviced.
• Keep a clearance of 50mm or more between the top panel of the unit and the ceiling.
• The length of a connection pipe to the indoor unit should be 15m or less.
<Installation space>
RBM-Y1123FE, RBM-Y1803FE
RBM-Y2803FE