SYSTEMP brochure
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Technological innovations
12
DualPower
Dual circuit system
Systemair offers specic units, named DualPower, pro-
vided with two independent cooling sources for critical
applications where the discontinuity of equipment opera-
tion is not acceptable.
High operational safety
Sometime the main cooling source may be insufcient to
guarantee suitable environmental conditions. This may be
due to an overload of the system, possible seasonal clo-
sures or any type of emergency. A reduction in the ma-
chine cooling capacity can lead to great instability in the
system, even in the presence of redundancy or Smart Net
systems.
To avoid these problems, specic DualPower units have
been developed providing a second source of cooling,
complete with its own control valve and independent
from the primary one.
A safe, exible system
The DualPower system is very exible and allows three
different types of systems.
Chilled water + direct expansion two sources
The chilled water primary source of the unit is connected
to a building chiller or to district cooling, whereas the sec-
ondary, emergency, and direct expansion one is connect-
ed to remote air or in-built water condensers (1).
Direct expansion + chilled water two sources
The direct expansion primary source of the unit is con-
nected to remote air or in-built water condensers, where-
as the secondary, emergency, and water one is connected
to a dedicated chiller, to a groundwater/aqueduct water
distribution network or to district cooling (2).
Chilled water + chilled water two sources
Both sources of the unit are chilled water coils. The pri-
mary one is normally connected to a building chiller or to
district cooling. The emergency source can be connected
to a dedicated chiller or a groundwater/aqueduct water
distribution network (3).
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