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www.blaubergventilatoren.de
FRESHBOX 60
UNIT DESIGN AND OPERATING LOGIC
Fig. 1. Unit design
Fig. 2. Operation logic
DELIVERY SET
Unit - 1 item;
Sensor speed switch - 1 item;
Power cable - 1 item;
Fasteners (screw 5.0x50 – 2 items; dowel 8x40 - 2 items);
Operation manual - 1 item;
Master plate - 1 item;
Packing box - 1 item.
The compact casing is made of polymer coated steel and has a 15 mm
thermal and sound insulation of PE foam film. The front panel serves for ac-
cessing to the unit internals.
The unit is powered through an integrated power supply unit with a wide
range of supply voltage from 100 to 240 V and frequency 50-60 Hz. The unit
is supplied with a power cord with a standard adapter and is compatible with
round Ø125 mm air ducts.
Axial EC fans provide air supply and air extract. EC motor technologies
meet the latest engineering demands for energy saving and for high-efficient
ventilation. Due to EC technology the single room air handling unit is featured
with a low energy demand. The fan motors are equipped with built-in thermal
overheating protection with automatic restart and ball bearings for longer
service life.
The unit incorporates a plate counter-flow plastic heat exchanger with
large surface area and high efficiency. Recuperating efficiency reaches 79%.
The air flows are fully separated within the heat exchanger. Odours and con-
taminants contained in the extract air are not transferred to the supply air
flow.
Heat recovery is based on the utilization of the thermal energy of the ex-
tract air for heating up the supply air. The extract air transfers most of its heat
to the intake air flow. This reduces thermal energy losses in cold seasons. In
summer the heat exchanger performs reverse and transfers cold from the
cooled extract air for cooling the warm intake air. This contributes to better
performance of the air conditioner in ventilated premises.
The integrated protection system is used for freezing protection of the
unit in cold seasons. The temperature sensor is installed in the section behind
the heat exchanger before the extract fan and is used for freezing protection
of the unit. If the exhaust temperature drops below +3 °C the heat exchanger
freezing danger is registered. In this case the supply fan is turned off and the
unit operates in exhaust mode which enables the heat exchanger get warmed
up with extract air. After freezing danger is off the unit reverts to the standard
operation mode.
The unit is equipped with BLAUBERG SGR-3/1 sensor speed switch for the
unit speed changeover.
Supply fan
Automation unit
Exhaust fan
Heat exchanger
Supply filter
Front panel
Extract filter
Intake air
Extract air
Supply filter
Extract filter
Heat exchanger
