Introduction; Meaning Of Symbols; General Equipment Specification; Aura Hcs Model Line - flowair AURA HCS Series Installation And Operating Instruction

1. I
NTRODUCTION
This manual is intended for qualified operators and contains information on standard functions and operation of units of the
HCS product line, it is not intended for unprofessional personnel. Detailed information for controlling the cooling system
is given in the Manual of the ACS control system.
With the device is supplied this operating instruction and the following documents.: ACS system manual, Technical passport,
Wiring diagram, dimensional drawing, device nameplate and, if applicable, operation test protocols. In the case of different
information, the supreme documents in terms of technical specifications are documents with marked serial number of the
device (e.g. dimensional drawing with attachment points for transport).
Before installing and commissioning the device, it is essential to read the information in this manual. Improper installation
can cause very serious injuries - electric hazards, refrigerant leakage, fire, etc. or cause damage to equipment and property.
Installation work, commissioning and regular maintenance of the cooling equipment must be carried out by qualified and
trained personnel. All operations must be performed in full compliance with local laws and regulations.
If you have any questions about the documentation, contact an authorized partner or FLOWAIR service organization.

Meaning of symbols

The following types of informational alerts are used in this document:
(Other symbols of specific safety instructions are explained below)

1.1. General equipment specification

The air-cooled chiller or condensing unit (CU version) is intended for cooling water (possible glycol mixtures) or, in the case
of the CU version, for cooling the evaporator in air-conditioning units. The operating parameters are defined when ordering
the device and subsequently confirmed in the Technological Parameters Card (TPC) of the device.
The function of the cooling equipment is based on the heat transfer of condensation and evaporation in the cooling circuit,
which is divided into a high-pressure and a low-pressure part. The main functional parts of the device are:

Scroll type compressor, which increases the pressure of the evaporated refrigerant to the condensing pressure;

Condenser cooled by forced air flow, in which high-pressure steam condenses and thus transfers latent heat to the
surrounding air. Axial fans, fully integrated in the condenser housing, are used to ensure air flow;

Expansion valve that reduces the pressure of condensate flowing from the condenser from the condensing pressure
back to the evaporating pressure;

Evaporator in which the liquid refrigerant evaporates at low pressure and cools the water (possibly air - CU version
- condensing unit).
All cooling units are completely assembled in the factory and tested before shipment - cooling units are filled by refrigerant
and tested operationally, condensing units or coolers with a separate evaporator are tested with computer simulation.

1.2. AURA HCS model line

Water cooled units can be made with possibilities free-cooling, recuperation, reversible heat pumps or condensing units that
allow a wide range of applications
INFORMATION
Notice of important technical information
! NOTICE !
Warning of important safety information
!!! SAFETY WARNINGS!!!
Strong warning of potential danger
FLOWAIR sp. z o.o. / OMSAC210708EN 3