AERMEC NYB, Installation Manual

6

20.05 – 4138421_03

Warning; 

Biological hazard 

Electricity 

Wear head 

protection 

Wear ear protection 

Wear eye protection

Warning; 

Sharp element 

Wear protective 

gloves 

Wear safety 

footwear 

Warning; 

Warning; 

Warning; 

Moving parts

Flammable material 

Warning; 

Hot surface 

GENERAL WARNINGS

This product is a complex machine. Things and persons may be exposed 

to risks during installation, operation, maintenance or repair, caused 

by certain conditions or components, such as for example, but not 

only, refrigerant, oils, moving mechanical parts pressure, heat sources, 

electricity. 

This products and its documentation, including this manual, are intended 

for persons in possession of appropriate training to enable them to 

operate correctly and safely. Before performing any operation on this 

equipment, it is essential for the operating personnel to have read and 

understood all manuals and any other material of reference. They must 

also know and observe the standards applicable to the activities to be 

performed.

ATTENTION

Any intervention on the unit must be performed by authorised 

and qualified experienced technicians, in accordance with current 

regulations.

The unit shows the following risks:

IMPORTANT GENERAL INSTRUCTIONS

• Risk of electric discharges.

• Risk of injuries due to rotating parts.

• Risk of injuries due to sharp edges and heavy weights.

• Risk of injuries due to high pressure gas.

• Risk of injuries due to high or low temperatures of components.

• Chemical risk

• Substances inside the water;

• In the event of the refrigerant catching fire, hazardous gases may be 

generated.

It is vital that all work on the unit is performed in compliance with the 

local standards. All work on the system must be performed to perfection

PRECAUTIONS AGAINST RESIDUAL RISKS

I

NSTRUCTIONS

-  Install the unit according to the requirements herein 

-  Personnel that come into contact with the machine must be 

competent in the use of this refrigerant and respect regulations 

currently in force. Assess the procedures Aermec requires and 

local fire prevention regulations to prevent inconsistencies in our 

requirements and regulations currently in force.

-  Regularly perform all maintenance operations provided for in this 

manual 

-  Wear personal protective equipment 

(gloves, eye protection, 

helmet, …)

 appropriate to the operations to be performed; do not 

wear clothes or accessories that may get caught or be sucked by the 

air flows; gather and tie your hair up before entering the unit 

-  The machine must be transported in compliance with current 

regulations, taking into account the features of the fluids inside and 

their characterisation described in the safety data sheet 

-  An inadequate transport may damage the machine, also generating 

refrigerant leaks. Before commissioning, check for leaks and make any 

necessary repairs.

-  The installation must comply with the requirements of EN378-3 and 

the local current regulations. In particular, indoor installation must 

ensure adequate ventilation and provide refrigerant detectors when 

necessary. 

-  The machine must not be installed in environments with risk of 

explosion but in a suitable place. In particular, if intended for indoor 

use, it cannot be installed outdoors 

-  The machines must be installed in structures protected from lightning 

as provided by the applicable laws and technical standards 

-   The overall fire risk assessment at the place of installation (i.e. fire load 

calculation) is the responsibility of the user.

-  Keep fire extinguishers near the machine suitable for putting out 

fires on electrical equipment and, for lubricant oil of the compressor 

and the refrigerant as provided by the relative safety data sheets (for 

example a CO

2

 fire extinguisher) 

-  It is not permitted to walk or place other bodies on the machines

-  Make the plant engineering connections to the unit according to the 

instructions in this manual 

 -  It is mandatory to install a water filter on the evaporator, penalty 

invalidation of the warranty

 -  Do not bend or hit pipes containing under pressure fluids 

Do not exceed the maximum allowable pressure (PS) of the unit’s 

water circuit shown on the serial number plate

-  Before removing elements along the under pressure water circuits, 

shut-off the pipe section involved and gradually drain the fluid until 

its pressure and that of the atmosphere are balanced.

-  The unit contains under pressure refrigerant gas: no operation 

must be performed on under pressure equipment except during 

maintenance that must be carried out by competent and authorised 

personnel 

-  Perform brazing or welding only on empty pipes and clear of any 

lubricating oil residues; do not near flames or other heat sources to 

the pipes containing refrigerant fluid 

-  Do not work with naked flames near the unit 

-  In order to avoid an environmental risk, make sure that any fluid leaks 

are recovered in suitable devices in compliance with local regulations. 

-  Do not use your hands to control any refrigerant leaks

-  An accidental release of refrigerant may cause risk of suffocation 

due to a lack of oxygen: install the machine in a well ventilated 

environment in accordance with EN 378-3 and local regulations 

currently in force. Those who come into contact with the machine 

must be equipped with a leak detector that is calibrated and 

validated to reveal any used refrigerant leaks.

-  The unit is fitted out with overpressure relief devices (safety valves): 

in the event that these devices start, the refrigerant gas is released at 

high temperature and high velocity.

Prevent the gas flow from harming people or things; if necessary, 

channel the leak according to the EN 378-3 standard and local 

regulations currently in force, paying particular attention to channel 

fluids that pertain to safety groups other than A1 toward open and 

secure spaces.

GENERAL WARNINGS