DVU HP brochure uk 06 2015 V3

DVU-HP
Integrated Reversible Heat Pump System
The DVU-HP is a complete section
with an integrated reversible heat
pump for both heating and cooling,
and a rotary heat exchanger for
effective heat recovery. The section is
delivered built into Systemair’s air
handling units; Danvent DV and TIME
ec, and is pretested from factory
ready for operation. The combination
of a heat pump and a rotary
exchanger ensures a short length and
an outstanding operating economy in
both heating and cooling situations.
The DVU-HP is equipped with two
scroll compressors (only one com-
pressor in the two smallest sizes DV
10 and DV 15) and capacity is step-
less regulated between 5–100% for
optimal comfort and minimum ener-
gy consumption. The heat pump is
based on the refrigerant R-410A.
Control system
DVU-HP is delivered with integrated
control system for total control and
operation of the heat pump’s regula-
tion and safety functions. The DVU-
HP’s own intelligent control system
communicates with the air handling
units’ control system in order to
ensure that the desired heating and
cooling capacity is provided at all
times. If a demand for heating or cool-
ing is registered, the heat pump’s
compressor will start and the capacity
is regulated by the modular digital
function of the scroll compressor. The
integrated control system also ensures
that the compressor and associated
components are always working
inside the permitted maximum/mini-
mum levels, which means that over-
load is prevented. Air output and tem-
perature is controlled by the control
system of the air handling unit.
Installation and maintenance
Installation is very easy, as the DVU-
HP is assembled and pretested from
factory. Service and maintenance are
also easy compared with traditional
systems, as all components are inte-
grated in the same air handling unit
section.
Technical data
The design programme
SystemairCAD makes it quick and
easy to calculate all technical data.
The most important preconditions
are set as default, but can be easily
adjusted to any specific project.
SystemairCAD also provides a quick
overview of the capacities and ener-
gy consumption levels. SystemairCAD
automatically conducts all calcula-
tions and provides the full technical
documentation that must be included
in any professional project.
Unique advantages
All DVU-HP components are carefully
selected and system design is opti-
mized for the best performance. This
system has a lower sound level than
traditional systems with an external
compressor. The complete section is
controlled and pretested from factory
so that mechanical errors are avoid-
ed, which may save vital time on the
building site. The stepless regulation
of the capacity ensures an optimal
indoor climate and assures that heat-
ing and cooling is available only with
a minimum of energy consumption.
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