SystemAir SAVEWALL HRV NEXT, Installation Manual

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Installation manual
SAVEWALL HRV NEXT

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Fig.1

SAVEWALL HRV NEXT is a single alternate flow decentralized (single point) residential heat recovery unit, also called 

«push&pull» unit, designed to ensure adequate ventilation in enclosed environments without energy losses. 

It is recommended that two units are installed in a pair: when one unit is pulling, the other is pushing. 

The pair of units can be installed in the same room or in different rooms (i.e. living-room and bedroom). The unit is suitable 

for installation on an outside wall.

Read this manual carefully before using the product and keep it in a safe 

place for reference.   

This product was constructed up to standard and in compliance with 

regulations relating to electrical equipment and must be installed by 

technically qualified personnel.  

The manufacturer assumes no responsibility for damage to persons or 

property resulting from failure to observe the regulations contained in this 

booklet.

PRECAUTIONS FOR INSTALLATION, USE AND MAINTENANCE

• The device should not be used for applications other than those specified in this manual. 

• After removing the product from its packaging, verify its condition. In case of doubt, contact a qualified technician. Do not 

leave packaging  within the reach of small children or people with disabilities.  

• Do not touch the appliance with wet or damp hands/feet. 

• This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or 

mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use 

of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning 

and user maintenance shall not be made by children without supervision. 

• Do not use the product in the presence of inflammable vapours, such as alcohol, insecticides, gasoline, etc. 

• If  any  abnormalities  in  operation  are  detected,  disconnect  the  device  from  the  mains  supply  and  contact  a  qualified 

technician immediately. Use  original spare parts only for repairs. 

• The electrical system to which the device is connected must comply with regulations. 

• Before connecting the product to the power supply or the power outlet, ensure that:  

  - the data plate (voltage and frequency) correspond to those of the electrical mains  

  - the electrical power supply/socket is adequate for maximum device power. If not, contact a qualified technician. 

• The device should not be used as an activator for water heaters, stoves, etc., nor should it discharge into hot air/fume vent 

ducts deriving from  any type of combustion unit. It must expel air outside via its own special duct. 

• Operating temperature: -20°C up to +50°C.

• The device is designed to extract clean air only, i.e. without grease, soot, chemical or corrosive agents, or flammable or 

explosive mixtures.  

• Do not leave the device exposed to atmospheric agents (rain, sun, snow, etc.).  

• Do not immerse the device or its parts in water or other liquids.  

• Turn off the main switch whenever a malfunction is detected or when cleaning. 

• For installation an omnipolar switch should be incorporated in the fixed wiring, in accordance with the wiring regulations, to 

provide a full  disconnection under overvoltage category III conditions (contact opening distance equal to or greater than 3mm). 

• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in 

order to avoid a   hazard. 

• Do not obstruct the fan or exhaust grille to ensure optimum air passage. 

• Ensure adequate air return/discharge into/from the room in compliance with existing regulations in order to ensure proper 

device operation. 

• If the environment in which the product is installed also houses a fuel-operating device (water heater, methane stove etc., 

that is not a “sealed  chamber” type), it is essential to ensure adequate air intake, to ensure good combustion and proper 

equipment operation.

INTRODUCTION

The unit should operate continuously, and only stopped for maintenance or service.

When heat exchange is not useful (for example in mid-seasons when indoor and outdoor temperatures are similar), or 

when heat exchange is not recommended (for example with the option “summer free cooling”), it is recommended to set 

the unit in “extract-only” or “intake-only” mode and NOT to switch it off.