5 - EN
1.2.1 Safety measures
Always observe the local building, safety and installation guidelines of the municipality, utility companies
or other authorities.
The unit must be lifted or handled keeping into consideration and respecting the local safety regulations.
Never lift the unit by yourself.
The installation of the unit hanging on the wall is not permitted.
Always connect air ducts with a minimum length of 900 mm to the unit before connecting the power
supply to prevent contact with the internal components.
After installation, all parts that could lead to personal injury are safely out of reach behind the casing.
It is not permitted to modify the unit or any of the specifications contained in this document. This may
result in personal injury or reduced ventilation system performance.
Installation, commissioning and maintenance must be carried out by a certified person or company,
unless stated otherwise. If this work is carried out by unauthorised persons, it may result in personal
injury or reduced performance of the ventilation system
Always disconnect the power supply of the unit before you start working on it. The unit can cause
personal injury when it is open during operation. Make sure the unit cannot be switched back on by
accident;
Always take ESD-inhibiting measures when dealing with electronics, such as wearing an antistatic
wristband. The electronics can be damaged by static charges;
In case of failure of the heat pump circuit please do not intervene and call the Zehnder Service;
The unit contains refrigerant R32. This is a low-flammable, non-toxic refrigerant. Handle the unit with
the utmost care during installation or maintenance activities to prevent refrigerant from leaking. Anyone
involved in maintenance, repair or recycling of the product should wear gloves and eye protection all the
time;
When welding or soldering in the proximity of the refrigerant circuit, always wear breathing equipment
fitted with a filter. The filter should provide protection against potential gas leakages; However no
operations over the refrigeration circuit is allowed. In case of failure or leakages please call the
Zehnder Service for support.
If refrigerant leaks anyway due to a defect or damage, then:
• Open windows and doors in the room in which the unit is located for at least one hour;
• The unit contains 0.65kg (at room temperature approx. 0,6 m3) of R32 refrigerant gas;
• The refrigerant is far heavier than air and it would concentrate on the floor and in case of leakage
never try to contain the escaped gas and do not breath it in;
• In the event of contact with skin or eyes, rinse for at least 20 minutes with lukewarm water and
contact your doctor.
Product end of life: when disposing of the unit, contact your local authority to enquiry which are the
possibilities for recycling or processing. The unit contains R32 refrigerant gas. It is mandatory that the
refrigerant is disposed of in an environmental friendly manner: if not the contribution to greenhouse gas
emissions of the volume of gas in this unit equals to 438 kg of CO2.
Flammable gas risk hazard!
Unit under pressure risk hazard!
