Panasonic R410A: 5/16 Installation Instructions Manual

Panasonic R410A: 5/16 Installation Instructions Manual Manual pdf 3 page image

3toarhntwnn-Check of Density LimitThe room in which the air conditioner is to beinstalled requires a design that in the event of refrig-erant gas leaking out, its density will not exceed a setlimit.The refrigerant (R410A), which is used in the air condition-er, is safe, without the toxicity or combustibility of ammonia,and is not restricted by laws imposed to protect the ozonelayer. However, since it contains more than air, it poses therisk of suffocation if its density should rise excessively. Suf-focation from leakage of refrigerant is almost non-existent.With the recent increase in the number of high densitybuildings, however, the installation of multi air conditionersystems is on the increase because of the need for effec-tive use of floor space, individual control, energy conserva-tion by curtailing heat and carrying power, 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 installation pro-cedure so that if the refrigerant accidentally leaks out, itsdensity does not reach the limit (and in the event of anemergency, measures can be made before injury canoccur).ASHRAE and the International Mechanical Code of theICC as well as CSA provide guidance and define safe-guards related to the use of refrigerants, all of which definea Refrigerant Concentration Level (RCL) of 25 poundsper 1,000 cubic feet for R410A refrigerant.For additional guidance and precautions related torefrigerant safety, please refer to the following documents:International Mechanical Code 2009 (IMC-2009)(or more recently revised)ASHRAE 15ASHRAE 34When Servicing• Turn the power OFF at the main power box (mains)before opening the unit to check or repair electricalparts and wiring.•parts.•Keep your fingers and clothing away from any movingClean up the site after you finish, remembering to checkthat no metal scraps or bits of wiring have been leftinside the unit being serviced.••Do not touch the air inlet or thesharp aluminum fins of theoutdoor unit. You may get injured.• Ventilate any enclosed areas wheninstalling or testing the refrigerationsystem. Escaped refrigerant gas, oncontact with fire or heat, can producedangerously toxic gas.Confirm after installation that norefrigerant 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.WARNING • Do not clean inside the indoor andoutdoor units by users. Engageauthorized dealer or specialist forcleaning.• In case of malfunction of thisappliance, do not repair by yourself.Contact to the sales dealer or servicedealer for a repair.CAUTIONCAUTIONOthers•••Do not touch the air inlet or thesharp aluminum fins 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 theFAN CASE.You may be injured and theunit may be damaged.