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1. OPERATING INSTRUCTIONS
1.1 Introduction
Dear Customer,
Thank you for choosing FERtech 25 OV, a FER wall-mounted boiler of the latest generation, featuring
advanced design and cutting-edge technology.
FERtech 25 OV is a high-efficiency condensing pre-mix appliance for heating with extremely low emis-
sions, running on natural gas or LPG.
The boiler consists of an aluminium laminar heat exchanger providing effective condensation of the
water vapour contained in the flue gases, permitting extremely high efficiency.
Above the heat exchanger, in the boiler, there is a ceramic surface pre-mix burner, equipped with
electronic ignition and ionization flame control, which achieves extremely low emissions while ensuring
high reliability and long life operation.
The boiler is totally room sealed from the installation room: the air needed for combustion is drawn from
outside. The boiler also includes a modulating speed fan, modulating gas valve, safety valve, temperature
sensors, a safety thermostat and a flue gas sensor.
Thanks to the twin microprocessor control and adjustment system with advanced self-diagnosis, unit
operation is for the most part automatic. The power for heating is automatically governed by the control
system.
The user only has to set the temperature desired inside the home (by means of a room thermostat and
or regulate the temperature of the system). The adjustment and control system will provide optimum
operation throughout the year.
The display continuously provides information on the unit's operating status and it is easily possible
to obtain additional information on the sensor temperatures, set-points, etc. or configure them. Any
operating problems associated with the boiler or system is immediately signalled by the display and, if
possible, corrected automatically.
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Cod. 3540U431 - 11/2009 (Rev. 00)
FERtech 25 OV
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