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5
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Preparation
Installer reference guide
20
FNA25~60A2VEB(9)
Split system air conditioners
4P550955-3C – 2020.12
5 Preparation
5.1 Overview: Preparation
This chapter describes what you have to do and know before going on-site.
It contains information about:
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Preparing the installation site
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Preparing the refrigerant piping
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Preparing the electrical wiring
5.2 Preparing the installation site
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Provide sufficient space around the unit for servicing and air circulation.
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Choose the installation location with sufficient space for carrying the unit in and
out of the site.
CAUTION
Do NOT install or use in places filled with smoke, gas, chemicals etc. Sensors inside
the indoor unit may detect these substances, and display a refrigerant leak
abnormality.
(1)
CAUTION
Do NOT install or use in highly airtight spaces, e.g. soundproof chambers or rooms
with sealed doors.
(1)
CAUTION
This unit is equipped with electrically powered safety measures, such as a refrigerant
leak detector. In order to be effective, the unit must be electrically powered at all
times after installation, except for short service periods.
(1)
WARNING
Do NOT install the air conditioner at any place where flammable gas may leak out. If
the gas leaks out and stays around the air conditioner, a fire may break out.
5.2.1 Installation site requirements of the indoor unit
INFORMATION
Also read the following requirements:
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General installation site requirements. See the "General safety precautions"
chapter.
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Refrigerant piping requirements (length, height difference). See further in this
"Preparation" chapter.
(1)
Only for units using R32 refrigerant. Refer to the outdoor unit specifications for the type of refrigerant to be used.