Panasonic U-72MF1U9 Installation Instructions Manual

Also see for S-07MD1U6: Service manual Installation instructions Installation instructions Service manual Operating instructions

Contents

Panasonic U-72MF1U9 Installation Instructions Manual Manual pdf 3 page image

3When ServicingTurn the power OFF at the main power box (mains)•before opening the unit to check or repair electricalparts and wiring.Keep your fi ngers and clothing away from any moving•parts.Clean up the site after you fi nish, remembering to check•that no metal scraps or bits of wiring have been leftinside the unit being serviced.WARNINGDo not clean inside the indoor and•outdoor units by users. Engageauthorized dealer or specialist forcleaning.In case of malfunction of this•appliance, do not repair by yourself.Contact to the sales dealer or servicedealer for a repair.CAUTIONDo not touch the air inlet or the•sharp aluminum fi ns of theoutdoor unit. You may get injured.Ventilate any enclosed areas when•installing or testing the refrigerationsystem. Escaped refrigerant gas, oncontact with fi re or heat, can producedangerously toxic gas.Confi rm after installation that no•refrigerant gas is leaking. If the gascomes in contact with a burning stove,gas water heater, electric room heateror other heat source, it can cause thegeneration of poisonous gas.OthersCAUTIONDo not touch the air inlet or the•sharp aluminum fi ns of theoutdoor unit. You may get injured.Do not sit or step on the unit,•you may fall down accidentally.Do not stick any object into the•FAN CASE.You may be injured and the unitmay be damaged.Check of Density LimitThe room in which the air conditioner is to beinstalled requires a design that in the event ofrefrigerant gas leaking out, its density will notexceed a set limit.The refrigerant (R410A), which is used in the airconditioner, is safe, without the toxicity or combustibilityof ammonia, and is not restricted by laws imposed toprotect the ozone layer. However, since it contains morethan air, it poses the risk of suffocation if its densityshould rise excessively. Suffocation from leakage ofrefrigerant is almost non-existent.With the recent increase in the number of high densitybuildings, however, the installation of multi airconditioner systems is on the increase because of theneed for effective use of fl oor space, individual control,energy conservation by curtailing heat and carryingpower, etc.Most importantly, the multi air conditioner system is ableto replenish a large amount of refrigerant compared toconventional individual air conditioners. If a single unit ofthe multi air conditioner system is to be installed in asmall room, select a suitable model and installationprocedure so that if the refrigerant accidentally leaksout, its density does not reach the limit (and in the eventof an emergency, measures can be made before injurycan occur).ASHRAE and the International Mechanical Code of theICC as well as CSA provide guidance and defi nesafeguards related to the use of refrigerants, all of whichdefi ne a Refrigerant Concentration Level (RCL) of 25pounds per 1,000 cubic feet for R410A refrigerant.For additional guidance and precautions related torefrigerant safety, please refer to the followingdocuments:International Mechanical Code 2009 (IMC-2009)(or more recently revised)ASHRAE 15ASHRAE 34