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Application, Operating Conditions and Construction
Manufacturer's Notification
CAKE compact units are manufactured in accordance with valid
Czech and European regulations and technical standards. These
units must be installed and used only in accordance with this do-
cumentation. The installation and operating documentation must
be available to the operating and servicing staff, and it is advisable
to store this documentation close to the installed air-handling unit.
Application and Operating Conditions
CAKE compact units are designed for the ventilation and air-
-conditioning of building interiors, especially commercial facilities
with low air flow rates of approx. 500 to 3,000 m3/h (e.g., small
commercial premises, offices, restaurants and schools). They are
designed to transport air without solid, fibrous, sticky, aggressive,
respectively explosive impurities. The inlet air must be drawn from
a hygienically wholesome environment. If not stated otherwise,
the transported air must be free of chemicals or chemicals corro-
sive to metal or aggressive zinc and aluminium.
CAKE compact air-handling units can be used in normal rooms
(IEC 60364-5-51, resp. ČSN 33 2000-5-51 ed. 3, ČSN 33 2000-
1 ed. 2) and in rooms with an extended ambient temperature
range ranging from -20 to +40°C without additional measures,
respectively -40°C to +55°C (customization). When designing the
air-handling assembly lay-out, it is necessary to take into account
the temperature and humidity of the inlet and outlet air in rela-
tion to the ambient temperature and humidity. This is especially
important for sufficient ventilation of the air-handling plant. For
outdoor installations where excessively humid air is exhausted
from the room (e.g., applications with a humidifier or other source
of humidity), it is necessary to consult this environment with the
manufacturer (for additional installation of a condensate drainage
tray inside the device). Failure to meet these conditions will result
in excessive condensation (misting and leaking) and possible
freezing. If the device is designed for outdoor environments (out-
door version), it is advisable to protect it with a roof. Degree of
protection against foreign matters and water is IP 44. The unit's
accessories (M&C) are not included – they must be assessed
separately according to their documentation.
CAKE compact air-handling units are designed to be installed on
the floor or a supporting structure. CAKE compact air-handling
units can be connected to a 1x230V+N+PE /50Hz or 3x400V+-
N+PE /50Hz power supply system (depending on the motor type).
The unit's operation is possible only with a measuring and
control system, ensuring control and safety functions. The main
precondition is the installation of functional antifreeze protection
elements of heat-exchangers, plate or rotary heat exchangers,
including active protection of the unit when reaching the final
pressure loss of filters.
This device must not be used (operated) by young (children, etc.)
or disabled persons.
Air-Handling unit Construction
This air-handling unit is designed as a panel and compact system.
All the panels are of sandwich construction with a total thickness
of 50 mm, and are made of hot–dip galvanized sheet steel in
accordance with ČSN EN 10 346 Z275 g/m
resistance for the C2 environment class in accordance with ČSN
EN ISO 14713. Alternatively, the panels can be provided with
additional surface finish:
EN10169, corrosion resistance for the C3 environment class in
accordance with ČSN EN ISO 14713
corrosion resistance for the C3 environment class in accordan-
ce with ČSN EN ISO 14713
EN10169, corrosion resistance for environments with a higher
content of chloramine (swimming pools). Insulation of the pa-
nels is created by 50mm thick non-combustible mineral wool,
50 kg/m
M6x20 metric Allen screws or alternatively the 4,2x16 self-
-tapping hexagon-head screws (DIN 7504-K) and plugs. To
install and remove the panels attached with metric screws, it
is necessary to use an Allen wrench, size 5 and for the panels
attached with self-tapping screws, it is recommended to use
a magnetic screwdriver inner hexagon bit, size 7 (BN 31522,
length 75 mm).
access the internal assemblies in order to perform checks,
periodic maintenance, service operations or unit cleaning, have
doors equipped with rotary safety closures.
The contact surfaces of the panels are fitted with the 12x3
self-adhesive PE sealing, temperature resistance from -40 °C to
+80 °C and rate of volume absorption below 5%. The contact
surfaces of the doors are fitted with the moisture-resisting EPDM
sealing, temperature resistance from -40 °C to +80 °C. The per-
manent joints are sealed with non-silicone sealant of temperature
resistance from -40 °C to +90 °C.
access to the switchboard box is ensured through the inspection
door from the service side. This door can be opened using a special
tool (Triangular 8). The box degree of protection is IP44.
The complete CAKE compact air-handling unit is manufactured as
a compact block, delivered in separate sub-blocks designed to be
assembled on the site or in special cases delivered disassembled
into separate assemblies. Basic versions according to the internal
arrangement of CAKE compact air-handling units:
VZ
VR
Base Frame
The base frame is an integral part of the compact air-handling
unit. It can be equipped with fixed or adjustable support legs. The
height of the base frame without legs is 85 mm and the height of
the base frame with legs is 185 mm.
Air-Handling Unit Designation
Each block of the compact air-handling unit is provided with a type
(name) plate indicating the following data (if applicable):
with basic corrosion
2
CAKE Air-handling units
Continuous polyester paint 25 μm, RAL 9002 ČSN
Powder polyester paint 60 μm, RAL 9002 ČSN EN10169,
Powder EP/PES paint, min. 60 μm, RAL 3020 ČSN
.
2
The fixed panels are attached with screw joints – the
The panels, which are supposed to be regularly used to
If the compact unit includes an integrated control unit, the
– a vertical unit equipped with a plate heat exchanger
(counter-flow version)
– a vertical unit equipped with a rotary exchanger
Manufacturer's name
Type, size and code designation
Order number
Weight
Power supply connecting data (electric distribution system)
3
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