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Installation and Maintenance Manual
Cross product family
General information
The Airec Cross exchanger is an asymmetric brazed plate heat
exchanger consisting of stainless steel plates brazed together
with copper or nickel. The Cross design has open sides to allow
gas to enter and leave. It must have a housing in order to be
functional.
Principle sketch of Cross 30
Denomination / Product identification
All Airec heat exchangers are equipped with an adhesive label
that includes information about the unit.
❶
Cross 30-C-140
Product type: Cross 30
Brazing material: N (nickel) / C (copper)
Number of plates: 140
❷
Item number
❸
Serial number
❹
Operating conditions:
TS: Material temperature min/max
PS: Operating pressure min/max bar (a) side A at max
temperature
PT: Test pressure Side A
Volume: side A (Litre)
Fluid group: according to approving organization
❺
Pressure vessel classification
❻
Label for CE-certified item
Pressure vessels
The Cross product type is manufactured according to the
European Directive for Pressure Equipment (PED 97/23/EEC).
Note: The gas temperature may be considerably higher than
the material temperature provided there is sufficient coolant
temperature and flow.
For divergent operating conditions, please contact Airec.
For approved units, the data on the label must not be exceeded
under any circumstances. The heat exchangers are designed for
use with fluids according to groups 1 and 2 in PED 97/23/EEC.
For operating conditions relating to the European approval PED,
please see Product sheets on www.airec.com. For more infor-
mation about approvals, please contact Airec.
Installation
Personal protection
Suitable protective clothing, i.e. goggles, gloves and shoes, must
be worn during the installation and/or maintenance of heat
exchangers. Caution: filled heat exchangers may be heavy; heat
exchangers may be hot from high-temperature operation;
condensate may be corrosive/caustic.
Mounting the Cross
The Cross 30 can be installed with either vertical or horizontal
gas flow.
Horizontal gas flow Vertical gas flow
Note: For condensing applications, installation must be vertical
with the gas flow from the top and down through the heat
exchanger. Condensate is then collected under the heat
exchanger.
Never expose Cross heat exchangers to excessive pulsations
(i.e. cyclic pressure or temperature changes). It is also important
that no vibrations are transferred to the unit. If there is a risk of
this, install vibration absorbers / muffler. If the installation
allows, it is also suggested that a buffer is installed between the
Cross and the support.
Whether the heat exchanger is mounted with horizontal or
vertical gas flow, it must be fully supported.
Support from the bottom
The Cross 30 must have a housing in order to be functional. The
Cross module should be installed in the housing in such a
manner that it is easy to connect the coolant piping.
Note: Never expose the Cross 30 to excessive thermal or me-
chanical forces.
Connections
The Cross is available with threaded liquid connections,
ISO-G 1” or 1.25” with length 22 mm or 44 mm.
Available connections
❶
❷
❸
❹
❺
❻
G 1 G1.25
