Mitsubishi Electric ECOV-X37VA Manuel D'installation page 19

5. Selecting the installation site
5-1. Statutory compliance
Select an installation location that is in compliance with the applicable laws and regulations related to noise, vibration, and
installation environment.
5-2. Consideration for pollution prevention and environment protection
Select an installation location in consideration of pollution prevention and environment protection.
5-3. Selecting the installation site
Select an installation location that meets the following requirements so that the unit functions properly.
5-3-1. Installation environment and restrictions
• Select a place where the gas cooler inlet air temperature is -25 to 43°C and there is good airflow.
• Do not install the unit in a location where the gas cooler is exposed to direct sunlight. Take appropriate measures to protect
the unit from the sunlight as necessary.
• Install the unit in a location where the noise or vibrations from the unit will not be a problem. (The unit must be installed ac-
cording to the applicable laws and regulations.)
• Do not place any inflammable materials (such as foamed styrol and cardboards) near the unit.
• Select a place where there is plenty of space for operation or servicing.
• Take appropriate measures to prevent unauthorized access to the installation site and machine room.
• Do not install the unit indoor, in a depressed space, or in a halfway basement.
• A pressure relief device must be installed on the high pressure side.
• Install a gas leak detector according to the applicable laws and regulations.
• The all-aluminum heat exchanger may corrode if it comes into contact with substances contained in water spray.
Do not spray water on the unit.
• Do not install the unit in any environment where it can be exposed to airborne iron or copper powder, acidic or alkaline at-
mosphere, or accumulation of a large amount of sand containing sea salt particles. Such environments can cause corrosion
in the aluminum pipes.
• Provide a certain amount of space around the unit for operation, maintenance, servicing, and heat dissipation. Insufficient
space may decrease the refrigerant capacity and cause an operation failure.
5-4. Height difference between devices
5-4-1. Height difference between the condensing unit and the evaporator
1) When installing the evaporator above the unit
Keep the height difference (between the end part of the
liquid pipe on the unit and the one on the evaporator)
within 8 m.
A large height difference may cause a pressure drop due
to the head difference of liquid refrigerant, generating
flash gas.
2) When installing the evaporator below the unit
Keep the height difference (between the highest suction
pipe and the lowest suction pipe) within 20 m.
A large height difference may cause a poor oil return to
the compressor, resulting in a compressor failure. Install
an oil return trap at every 5 m.
Unit
When the evaporator is installed above the unit
Unit
Evaporator
When the evaporator is installed below the unit
19
Evaporator
Oil return trap
WT09614X03_GB