Specifications

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Effect of full heat exchange
Effect of heating
-5 0 5 10 15 20 25 30 35 40
100 80
60
40
20
+
+
Efficient Outdoor Air Introduction with Heat Exchanger and Cooling/Heating Operation›
Indoor unit with outdoor air treatment.
The temperature can be brought close to room temperature with minimal cooling capacity through the use of
outdoor air.
Heating and cooling
Heat recovery
Humidifying
Outdoor air
temperature in winter
Outdoor air
temperature in summer
Effect of full heat exchange
Effect of cooling
Effect of humidifi-
cation
Indoor temperature during cooling
Indoor temperature during heating
Effect of heating
Effect of full heat exchange
Dry bulb temperature (°CDB)
Relative humidity (%)
Higher static pressure and reduced noise
The use of multiple, overlapping arc shaped
fan blades makes it possible to optimize the
chord lenght and blade outlet angle. This re-
sults in higher static pressure and quieter ope-
ration over the entire operating range.
Rotating currents for reduced loss
The use of a thinner scroll allows rectification
of rotating currents within the scroll.
Higher static pressure
The fan diameter has
been increased and blade
width
optimized, resulting
in higher
static pressure.
Higher static pressure and reduced pressure loss
In addition to increasing the scroll
wrap angle and boosting the static
pressure, the outflow angle has been
optimized to reduce pressure loss in
the outflow area.
Indoor Unit Connectability›
The indoor unit is connectable up to 130% of outdoor unit capacity.
11
2. DESIGN FLEXIBILITY
High Static Pressure›
Modifications to the fan, including the use of multiple arc blades, a thinner scroll and optimized fan scroll
angle, help to boost efficiency. Dramatically higher static pressure is achieved due to improved fan performance.
This reduces limitations on unit location and allows more flexibility in duct design.
EPC08-203.indd 11 12-03-2008 13:21:29