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Idiomas disponibles
Idiomas disponibles
1 - Features and Benefits
1.1 Features and Benefits
The Liebert
HCR heat exchangers are our new range of remote
®
air-cooled condensers especially designed to be coupled with the
Liebert
CRV (A type) air conditioning units power supplied at 50Hz
®
(CE market), within a standard range of external air temperature
from -20°C to + 48°C.
They cover a complete range of nominal heat rejection capacities,
from 7 to 100kW.
The HCR family comes with a factory-installed stepless fan speed
controller (Variex) especially designed and set for R410A refrigerant
and digital scroll refrigerant circuit use.
The Liebert
HCR condensers have suction type axial fans.
®
They are suitable for both vertical and horizontal air flow installation.
1.2 Power supply
All models are available for 230V/1ph/50Hz power supply.
1.3 Low Noise and Energy Efficiency Ratio
The achievement of a low sound pressure level during the night is
obtained by the already factory-installed electronic voltage variator
(Variex).
The achievement of a low sound pressure level 24 hours a day is
obtained by using a condenser with a higher capacity, according to
the required operating conditions.
The proper solution should be calculated case by case.
The achievement of an higher energy efficiency ratio of the system
is obtained moving the set point value of Variex from the factory
preset higher value (default mode) to the factory preset lower value
just acting on terminals 70-71 of electrical panel by means of an
external contact (normally open 24V AC terminals 70-71 means
higher set point, normally closed 24V AC terminals 70-71 means
lower set point).
2- Mechanical Specifications
2.1 Cabinet
It is made of aluminum and painted galvanized steel. In the multi-
fan models the air flow is maintained separated.
The models are delivered provided with movable protection on the
side of terminal box / refrigerant connections. The attaching legs
are in aluminum for both horizontal and vertical installation.
2.2 Coil
The circuits are in counterflow. All the collectors for the refrigerant
connections are provided with pressure intakes with connection
1/4" SAE.
The single-circuit HCR coils are made with copper tubes and
aluminum fins (default option), according to the geometry with
staggered ranks, and are tested in dry air at the pressure of 45
barg after they have been carefully cleaned, chemically degrease
and dehydrated, then delivered pressurized (2 barg dry air). The
out diameter of the tubes is 5 mm for all models.
2.3 Fan Motors
The axial fan motors are built with external rotor.
The motors are single - phase 230/1/50 (V/Ph/Hz), built according
to the norms VDE (EN60034) and class of insulation F.
The protective grills produced with anti - corrosive clading, are in
accordance with the safety norms EN13857.
The electrical connections between the fans and the terminal box
IP65 are made of electrical cables for the outdoor installation, non
- combustible in accordance with the norms CEI 20-22 and IEC
332-3 category A.
Liebert
HCR - UM - 265224_EN - 13.10.2022
®
The main switch (IP65) is externally installed on the fan panel.
2.4 Variex
Each HCR condenser is equipped (as standard) with a factory
set and installed stepless fan speed controller (triac cut phase)
formally called Variex (230V single phase). This device have
been especially designed for usage with R410A refrigerant and
digital scroll circuit. It allows to operate with two different levels of
condensing pressure set point, as default it works with the higher
level of set point (equal to 23 barg). By acting on terminals 7-71 of
electrical board it is possible to switch from high to low set point:
normally open 24V AC terminals 70-71 (default condition) means
higher set point, normally closed 24V AC terminals means lower
set point.
2.5 Shut off valve kit
Each HCR condenser is supplied with a shut off valve kit to be
welded on field.
2.6 Filter
A filter can be placed on the suction side of the coil, in order to
reduce the frequency of coil cleaning maintenance. The filter
locking fasteners are provided as standard.
2.7 Packing
Condensers are packed in wooden crate packing. A plastic film
protects the surfaces.
The units with their packages can be stacked for max. three units/
stack, overlapping them.
2.8 Options
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Coils with copper pipes and pre- painted aluminum fins with
epoxy/acrylic resin
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Coils with copper pipes and copper fins
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Seaworthy packing.
3 - Test and Reference Norms
3.1 Safety
Liebert
HCR units are designed, manufactured and tested
®
according to the European Union Directives:
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MD: 2006/42/EC;
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EMC: 2014/30/EU;
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LVD: 2014/35/EU;
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PED: 2014/68/EU.
3.2 Electrical Board
Design and manufacturing is compliant with EN 60204-1, CEI 20-
22 II and IEC 332-3 cat. A.
3.3 Electro-Magnetic Compability (EMC)
Liebert
HCR complies with the following EMC standards:
®
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EN 61000-6-2:2005 Electromagnetic compatibility (EMC) - Part
6-2: Generic standards - Immunity for industrial environments
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EN 61000-6-3:2007 Electromagnetic compatibility (EMC) -
Part 6-3: Generic standards - Emission standard for residential,
commercial and light-industrial environments
3.4 Performances
Heat rejection capacities - with refrigerant R410A - have been
evaluated following to the European Standard UNI EN 327.
Sound pressure levels have been evaluated according to the norm
EN13487 (referred to 5m far from the unit).
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