SiEN18-622 Ceiling Mounted Cassette TypeSystem Configuration 291Be sure the air conditioner is electrically grounded.Do not connect the grounding conductor to a gas pipe,water pipe, lightning arrester and the grounding conductorfor a telephone.Imperfect grounding work may result in an electric shock.Execute complete drain piping for perfect drainageIncomplete piping may result in a water leakage.The appliance is not intended for use by youngchildren or infirm persons without supervision. Youngchildren should be supervised to ensure that they donot play with the appliance.If the temperature or the humidity is beyond the followingconditions, safety devices may work and the airconditioner may not operate, or sometimes, water maydrop from the indoor unit.CoolingDB: Dry bulb temperature (°C)DB: Dry bulb temperature (°C)WB: Wet bulb temperature (°C)The setting temperature range of the remote control is 16°C to32°C.Regarding places for installation• Is the air conditioner installed at a well-ventilatedplace 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 suchas a factory or plant.e. Vehicles and vessels.f. Where there is much spray of oil and vapor such as acookery, etc.g. Where there are machines generating electromagneticwaves.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 authorizedelectrician.To do wiring, ask your dealer. Never do it by yourself.3. Operation rangeOUTDOOR UNITINDOORR35 · 45 · 60 DB 18 to 33 80% orbelow DB – 15 to 46WB 12 to 24RY35 · 45 · 60 DB 18 to 33 80% orbelow DB – 5 to 46WB 12 to 24R71 · 100 · 125RP71 · 100 · 125REP71 · 100 · 125DB 21 to 35 80% orbelow DB – 15 to 46WB 14 to 25RY71 · 100 · 125RYP71 · 100 · 125RYEP71 · 100 · 125DB 18 to 35 80% orbelow DB – 5 to 46WB 12 to 25RZP71 · 100 · 125 DB 21 to 35 80% orbelow DB – 5 to 50WB 14 to 25RQ71 · 100 · 125 DB 18 to 37 80% orbelow DB – 5 to 46WB 12 to 28RR71 · 100 · 125 DB 18 to 37 80% orbelow DB – 15 to 46WB 12 to 28RZQ71 · 100 · 125 ·140DB 18 to 37 80% orbelow DB – 15 to 50WB 12 to 28RS50 · 60RKS35 · 50 · 60RXS35 · 50 · 60DB 21 to 32 80% orbelow DB – 10 to 46WB 14 to 233MKS504MKS58 · 75 · 903MXS52 · 2MXS524MXS68 · 80DB 21 to 32 80% orbelow DB – 10 to 46WB 14 to 23RMKS112 · 140 · 160RMXS112 · 140 · 160DB 21 to 32 80% orbelow DB – 5 to 46WB 14 to 23TEMPERA-TUREHUMID-ITYOUTDOORTEMPERA-TURE4. Installation siteHEATINGOUTDOOR UNIT INDOORTEMPERATUREOUTDOORTEMPERATURERY35 · 45 · 60 DB 15 to 27 DB – 9 to 21WB – 10 to 15.5RY71 · 100 · 125RYP71 · 100 · 125RYEP71 · 100 · 125DB 15 to 27DB – 9 to 21WB – 10 to 15.5RZP71 · 100 · 125 DB 15 to 27 DB – 14 to 21WB – 15 to 15.5RQ71 · 100 · 125 DB 10 to 27 DB – 9 to 21WB – 10 to 15RZQ71 · 100 · 125 ·140 DB 10 to 27 DB – 19.5 to 21WB – 20 to 15.5RXS35 · 50 · 60 DB 10 to 30 DB – 14 to 24WB – 15 to 183MXS52 · 2MXS524MXS68 · 80 DB 10 to 30 DB – 14 to 21WB – 15 to 15.5RMXS112 · 140 · 160 DB 10 to 30 DB – 14 to 21WB – 15 to 15.5
