12611.9 DUCT TYPE AIR CONDITIONERS INSTALLATION INSTRUCTIONSHP Cooling capacity Model name1.75 4.5kW S-45MA1E52.0 5.6kW S-56MA1E5REFRIGERANTR 410A 2.5 6.3kW S-63MA1E53.0 7.1kW S-71MA1E53.5 9.0kW S-90MA1E5Precautions in terms of safetyCarry out installation work with reliability after thorough reading of this “Precaution in terms of safety”.• Precautions shown here are differentiated between Warnings and Cautions . Those that have much chancesfor leading to significant result such as fatality or serious injury if wrong installation would have been carried outare listed compiling them especially into the column of Warnings .However, even in the case of items which are listed in the column of Cautions , such items also have a chancefor leading to significant result depending on the situations.In either case, important descriptions regarding the safety are listed, then observe them without fail.• As to indications with illustrationThis mark means “Caution” or “Warning”. This mark means “Earth”.• After installation work has been completed, do not only make sure that the unit is free from any abnormalcondition through the execution of trial run but also explain how to use and how to perform maintenance of thisunit to the customer according to the instruction manual.In addition, request the customer to keep this manual for installation work together with instruction manual.WarningsThe appliance must be installed by technician, who takes into account the requirements given by ISO5149 or eventual equivalentrequirements.As to installation, request the distributor or vendor to perform it. Imperfection in installation caused by that having been carried out by thecustomer himself may leads to water leakage, electric shock, fire, etc.Carry out the installation work with reliability according to this manual for installation work.Imperfection in installation leads to water leakage, electric shock, fire, etc.Carry out the installation work with reliability on the place that can bears the weight of this unit sufficiently.Insufficient strength leads to injury due to falling of the unit.Carry out predetermined installation work in preparation for strong wind such as typhoon, earthquake.Imperfection in installation work may lead to accidents arisen from overturn, etc.The unit must be installed in accordance with applicable national and local regulations.Any electrical work should only be carried out by qualified technician and use exclusive circuits without fail.Presence of insufficient capacity in power circuit or imperfection in execution leads to electric shock, fire, etc.Wiring shall be connected using specified cables and fix them securely so that external force of the cables may not transfer to theterminal connection section.Imperfect connection and fixing leads to fire, etc.If installing inside a small room, measures should be taken to prevent refrigerant levels from building up to critical concentrations in theevent of a refrigerant leak occurring. Please discuss with the place of purchase for advice on what measures may be necessary toprevent critical concentrations being exceeded. If the refrigerant leaks and reaches critical concentration levels, there is the danger thatdeath from suffocation may result.Securely attach the protective covers for the outdoor unit connection cables and power cord so that they do not lift up after installation. Ifthe covers are not properly attached and installed, the terminal connections may overheat, and fire or electric shock may result.Switch off all supplies before accessing any electrical part.If refrigerant gas escapes during installation, ventilate the affected area. If the refrigerant gas comes into contact with sparks or nakedflames, it will cause toxic gases to be generated.Once installation work is completed, check that there are no refrigerant gas in the room that can come into contact with sparks or flamesfrom a fan heater, stove or kitchen range, which will cause toxic gases to be generated.When performing piping work do not mix air except for specified refrigerant (R410A) in refrigeration cycle. It causes capacity down, andrisk of explosion and injury due to high tension inside the refrigerant cycle.