From inside (document excerpt):
Air-Conditioners PKA-RP·KAL INSTALLATION MANUAL FOR INSTALLER For safe and correct use, read this manual and the outdoor unit installation manual thoroughly before installing the air-conditioner unit. English INSTALLATIONSHANDBUCH MANUEL D’INSTALLATION FÜR INSTALLATEURE Aus Sicherheitsgründen und zur richtigen Anwendung vor Installation der Klimaanlage die vorliegende Bedienungsanleitung und das Installationshandbuch gründlich durchlesen.
Operation Manual and perform the test run to ensure normal operation. Both the Installation Manual and Operation Manual must be given to the user for keeping. These manuals must be passed on to subsequent users. : Indicates a part which must be grounded. Warning: Carefully read the labels affixed to the main unit. · Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact with a flame, poisonous gases will be released. · All electric work must be performed by a qualified technician according to local regulations and the instructions given in this manual. · Use only specified cables for wiring. · The terminal block cover panel of the unit must be firmly attached. · Use only accessories authorized by Mitsubishi Electric and ask a dealer or an authorized technician to install them. · The user should never attempt to repair the unit or transfer it to another location. · After installation has been completed, check for refrigerant leaks. If refrigerant leaks into the room and comes into contact with the flame of a heater or portable cooking range, poisonous gases will be released. 1.1. Before installation (Environment) Caution: · Do not use the unit in an unusual environment. If the air conditioner is installed in areas exposed to steam, volatile oil (including machine oil), or sulfuric gas, areas exposed to high salt content such as the seaside, the performance can be significantly reduced and the internal parts can be damaged. · Do not install the unit where combustible gases may leak, be produced, flow, or accumulate. If combustible gas accumulates around the unit, fire or explosion may result. · Do not keep food, plants, caged pets, artwork, or precision instruments in the direct airflow of the indoor unit or too close to the unit as these items can be damaged by temperature changes or dripping water. · When the room humidity exceeds 80% or when the drainpipe is clogged, water may drip from the indoor unit. Do not install the indoor unit where such dripping can cause damage. · When installing the unit in a hospital or communications office, be prepared for noise and electronic interference. Inverters, home appliances, high-frequency medical equipment, and radio communications equipment can cause the air conditioner to malfunction or breakdown. The air conditioner may also affect medical equipment, disturbing medical care, and communications equipment, harming the screen display quality. 1.2. Before installation or relocation Caution: · Be extremely careful when transporting the units. Two or more persons are needed to handle the unit as it weighs 20 kg or more. Do not grasp the packaging bands. Wear protective gloves as you can injure your hands on the fins or other parts. · Be sure to safely dispose of the packaging materials. Packaging materials, such as nails and other metal or wooden parts may cause stabs or other injuries