Section 1 - General Characteristics; Presentation Of The Manual; General Characteristics - MAXA OTA micro 15 Manuel Utilisateur

OTA micro 15÷50
INTRODUCTION
The OTA micro heat recovery units feature compact dimensions and easy assembly.
The OTA micro heat recovery units combine maximum room comfort with certain energy savings.
Current air-conditioning and air handling systems require forced ventilation, which consequently involves the discharge of
the conditioned air and as a result means significant energy consumption and an increase in running costs.
The OTA micro series has been designed to resolve these probles by the use of static exchangers.
The OTA micro series adopts an heat recovery made of plane sheets of special paper. These exchangers are also called
total heat recoveries: infact, they can recover both sensible and latent heat (humidity), with temperature efficiency between
60-80% and enthalpy efficiency tbetween 50-70%. Thanks to this high efficiency, the fresh air in winter conditions can be
directly introduced in air-conditioned rooms, without installing post-heating sections.
The drain pan collector is not present because the humidity contained in one of air flows is partially absorbed by the
porous surface but then completely transferred to the opposite flow: therefore the humidity condensation is avoided.
The high static pressure values available allow the use of ducting for the extraction or distribution of air in a series of rooms.

SECTION 1 - GENERAL CHARACTERISTICS

1.1 Presentation of the manual

This manual describes the rules for the transportation, the installation, the use and the maintenance of the heat reco-
very. The user will find everything that is normally useful to know for a correct and safe installation of the OTA micro
unit.
The non-observance of what is described in this handbook and an inadequate installation of the OTA micro unit may
cause the cancellation of the guarantee that the MAXA Company grants on the same one. The MAXA Company, moreo-
ver, does not answer to possible direct and/or indirect damages due to wrong installation carried out by inexpert and/or
non-authorised staff. At the moment of the purchase, check that the machine is integral and complete. Claims will have
to be produced within 8 days from the reception of the goods.

1.2 General characteristics

• Static, counterflow heat exchanger, made of plane sheets of special paper. These exchangers are also called "total
heat exchangers": infact, they can recover sensible heat in measure of 74% and latent heat (humidity) till 60% and
therefore they are particularly suitable for summer recuperation.
• The air flows are separated by proper seal.
• The heat exchanger is easily removable from the side for
periodical maintenance.
• The units dimensions are very compact, thanks to the accuracy of engineering.
• Very noiseless running, thanks to high quality of materials and components.
• With the fans working, it is possible to by-pass the heat exchanger: so we can realize a "free-cooling" condition, use-
ful during the between season.
• High efficient air filtration
• Unit control panel suitable for wall mounting, featuring the on/off function, speed switching, and free-cooling mode
selection.
Counterflow enthalpic heat exchanger
Exhaust air
OUTDOORS
Fresh air
Fresh air
INDOORS
Exhaust air
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