2.3 Not approved for installation in series with another furnace - The hot air duct (A) must not be installed in the air return of (B) . - The hot air duct (B) must not be installed in the air return of (A) .
3 Setting up the unit and clearances To reduce the risk of vibration, the furnace must be leveled in both directions and supported evenly to ensure stability. 3.1 Unit location The furnace must be installed in a location: - Where outside air supply will be sufficient for proper combustion, otherwise install the optional fresh air supply; - Where connector is as short as possible in order to minimize the use of 90 o elbows and horizontal lengths; - That ensure a proper installation and safe operation of the appliance; - Where the owner can ensure cleanliness of the room in the event of negative pressure or temporarily negative; - Where room to perform maintenance is sufficient and safe. 3.2 Certification label N.B.: THIS APPLIANCE MUST BE INSTALLED IN ACCORDANCE WITH THE INSTRUCTIONS ON THE CERTIFICATION LABEL APPLIED ON THE UNIT. Location: You will find the certification label on the back of the appliance. Information found on the certification label always overrides the information published in any other publication. Content of certification label: Model number, serial number, certification agency, Standards, clearances to combustible material, as well as the main safety cautions.
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