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1.5.
Installation Site Requirements for the Indoor Unit
Also read the following requirements:
▪ General installation site requirements. See the "General safety precautions" chapter.
▪ Service space requirements.
▪ Refrigerant piping requirements (length, height difference).
Local building codes and safety standards shall be followed; in absence of local codes and standards
refer to EN 378 3 / ISO 5149-3 as a guide.
•
Provide sufficient space around the unit for servicing and air circulation.
•
Make sure the installation site withstands the unit's weight and vibration.
•
Make sure the unit is levelled.
•
Select the location of the unit in such a way that the sound generated by the unit does not disturb anyone, and
the location is selected according to the applicable legislation.
•
Take care that in the event of a water leak, water cannot cause any damage to the installation space and
surroundings.
•
During installation, avoid the possibility that anybody can climb on the unit or place objects on the unit.
•
All piping lengths and distances have been taken into consideration (see "4.1 About the piping length").
Do NOT install the unit in the following places:
-
In potentially explosive atmospheres.
-
In places where there is machinery that emits electromagnetic waves. Electromagnetic waves may disturb
the control system, and cause malfunction of the equipment.
-
In places where there is a risk of fire due to the leakage of flammable gases (example: thinner or gasoline),
carbon fibre, ignitable dust.
-
In places where corrosive gas (example: sulphurous acid gas) is produced. Corrosion of copper pipes or
soldered parts may cause refrigerant leaks.
-
In places where a mineral oil mist, spray or vapour may be present in the atmosphere. Plastic parts may
deteriorate and fall off or cause water leakage.
Appliance NOT accessible to the public, install it in a secured area, protected from easy access. This
unit is suitable for installation in a commercial and light industrial environment
1.5.1. Installation room area requirements
The indoor unit must meet the Toxicity (EN 378) and Flammability (IEC 60335-2-40) requirements for
the installation
The EWYT~CZ(I/O) Units are labeled as "Enhanced Tightness Refrigerating Systems". This, in accordance with the IEC
60335-2-40 Annex GG.2 Section.
In order to be considered an "Enhanced Tightness Refrigerant System", the unit shall fulfill all of the following conditions:
a)
No compressor or pressure vessel (BPHE > 15 l) type refrigerant containing components shall be located
indoors.
b)
Refrigerant distribution assemblies shall meet all applicable requirements of this standard.
c)
Refrigeration systems shall use only permanent joints indoors except for site-made joints directly connecting the
indoor unit to the refrigerant piping.
d)
Refrigerant containing parts in indoor units shall be protected from damage in the event of catastrophic failure of
moving parts, e.g., fans.
e)
Systems where the equipment pipes in the occupied space in question are installed in such a way that it is
protected against accidental damage.
f)
The refrigeration system of each indoor unit shall be tightness tested at the factory with detection equipment
with a capability of 3 grams per year of refrigerant or better under a pressure of at least 0,25 times the
maximum allowable pressure. No leak shall be detected.
g)
Vibrations exceeding 0,30 G rms, when measured with a low pass filter at 200 Hz, are not allowed in the
refrigerant containing parts in the occupied space under normal operation.
h)
Indoor heat exchangers shall be protected from freezing.
i)
The maximum fan operating speed shall be less than 90% of the maximum allowable fan speed as specified by
the manufacturer of the fan wheel.
All the conditions above mentioned have been tested and verified.
D-EIMHP01505-22_00EN 8/59
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