AERMEC NYB, Installation Manual

10

20.05 – 4138421_03

STORAGE

PLACEMENT AND INSTALLATION REQUIREMENTS 

For unit installation it is important to perform the following preliminary 

preparation tasks:

•   When installing, make sure that the atmospheric or environmental agents 

do not affect and corrode the cooling circuit components, causing the 

refrigerant to leak in the environment and, if so, make the appropriate 

adjustments.

•  The air-cooled units with fans are designed for outdoor installation. 

Contact Aermec before making any type of installation.

•  The water-cooled units are designed for indoor installation. Contact 

Aermec before making any type of installation.

•   For the positioning of the air-cooled units for outdoor use, choose a place 

that is not exposed to excessive wind (install windbreaks if the wind speed 

exceeds 86.6in/s).

•   The soil under the unit must be flat, smooth and sufficiently strong to 

withstand the weight of the unit with a full refrigerant load, as well as the 

occasional presence of the normal maintenance equipment.

•   In locations exposed to frost, if the unit is installed on soil, the support 

base must rest on concrete columns with a depth greater than the normal 

depth of frost of the soil. It is always advisable to build a support base 

separate from the main building to avoid the transmission of vibrations.

•   For normal applications, the rigidity of the unit and the positioning of 

point loads allow for an installation that minimises vibrations. In the case 

of installations requiring particularly low vibration levels, you can use the 

anti-vibration supports.

ATTENTION: The use of anti-vibration supports MUST be combined with 

the installation in the unit water piping of flexible couplings. The anti-

vibration supports must be fixed to the unit BEFORE it is earthed. AERMEC 

is not responsible for the choice of capacity of the anti-vibration supports.

•   The unit must be fixed to the anti-vibration supports and these firmly 

fixed to the concrete base, see chapter weight distribution and minimum 

technical spaces

•  Check that the contact surfaces of the anti-vibration supports are levelled 

to the base. If necessary, use spacers or level the base but, in any case, 

make sure that the anti-vibration supports rest flat on the base surface.

•   It is essential that the units are installed leaving sufficient space around 

them to allow easy access to the components for maintenance and repair 

purposes. Only for air-cooled devices: if the air output by the condensers 

encounters any obstacle, it tends to return to the fans. This leads to an 

increase in the temperature of the air used to cool the condensers. The 

obstructions at the air outlet also negatively impact the distribution of 

the air over the entire surface of the condenser’s thermal exchange. Both 

of these conditions, which reduce the thermal exchange capacity of the 

coils, cause an increase in the condensation pressure. This leads to a loss of 

power and an increase in the compressor absorption.

•  Only for air-cooled chillers: to prevent the air flow from inverting due to 

dominating winds, the units must not be completely covered by a high 

and continuous windbreak. If it is not possible to avoid this configuration, 

an air exhaust duct can be installed at the same height of the surround-

ing shield, upon written approval of an AERMEC representative.

ATTENTION: It is important that the units are installed flat. The improper 

installation of the unit invalidates the warranty.

Recommended Installation

Windbreak

recommended with wind above 86.6 in/s

Installation not allowed

Recommended 90.6in

Maximum storage temperature

Refrigerant

Type

Class

Max. Temp. (°F)

R134a

HFC

A1

<122 °F

R410A

HFC

A1

<122 °F

R1234ze

HFO

A2L

<122 °F

R513A

HFO

A1

<122 °F

It may happen that, after receipt, the units are not to be immediately installed 

and are kept in storage. In case of medium-long term storage, we recommend 

applying the following procedures:

•   Make sure there is no water inside the hydraulic systems.

•   Do not remove the protections from the heat exchanger.

•   Do not remove the plastic protective films.

•   Make sure that the electrical panels are closed.

•   Before using the equipment, store all items provided in a dry and clean 

place so that they can be used in the future. We recommend storing the 

unit in a dry and sheltered place (especially for units intended for indoors).

NOTE The maximum storage temperature of the units depends on the 

type of refrigerant contained, see table. Beyond this limit, there is a risk of 

refrigerant leaking through the safety valves.

STORAGE