Service Manual

1. General information
2
SMGB0079 rev.0 - 01/2013
1.1 General information
1.1.1 General notes
No part of this publication may be reproduced, copied, led or transmitted in any shape or form without the permission of
HITACHI Air Conditioning Products Europe, S.A.
Within the policy of continuous improvement of its products, HITACHI Air Conditioning Products Europe, S.A. reserves the
right to make changes at any time without prior notication and without being compelled to introducing them into products
subsequently sold. This document may therefore have been subject to amendments during the life of the product.
HITACHI makes every effort to offer correct, up-to-date documentation. Despite this, printing errors cannot be controlled by
HITACHI and are not its responsibility.
As a result, some of the images or data used to illustrate this document may not refer to specic models. No claims will be
accepted based on the data, illustrations and descriptions included in this manual.
No type of modication must be made to the equipment without prior, written authorisation from the manufacturer.
HITACHI pursues a policy of continuing improvement in design and performance of Products. The right is therefore reser-
ved to vary specications without notice.
HITACHI cannot anticipate every possible circumstance that might involve a potential hazard.
No part of this manual may be reproduced without written permission.
1.1.2 Introduction
Hitachi UTOPIA series is an outdoor unit series designed with the goal to cover the requirements of the split and multisplit
systems, for installations where from one indoor unit (single system) to up to 8 indoor units, are connected to the same IVX
Premium outdoor unit (depending on model).
New UTOPIA series consists in two different outdoor unit series: IVX Premium and IVX Standard, which compliant with
the Seasonal Efciency driven by the EU’s Energy Product Directive (Eco Design Directive (EuP Lot 10)) and Seasonal
Efciency design concept in order to meet the European Directive on seasonal efciency (Lot 6/21 coming in 2015) (depen-
ding on the model). The Seasonal Energy Efciency Ratio (SEER) in cooling and the Seasonal Coefcient of Performance
(SCOP) in heating, show an approach values to the real energy consumption.
UTOPIA series incorporate the Hitachi inverter technology, which makes possible to adapt automatically and without the
user operation the capacity of the unit, so the power input, to the real demand of the installation, increasing the system
efciency to unattainable levels with other technologies. All UTOPIA units are equipped with a heat pump, resulting in an
air conditioning system valid for the whole year, in which the installation of additional and specic systems a not necessary.
IVX Premium
Nominal capacity from 5 kW to 30 kW (cooling mode). Connectable indoor units up to 8 units (depending on model) and
total combination power from 50% up to 120%, outdoor units from 3 to 12HP, or 90% up to 110% for 2 and 2.5 HP outdoor
units.
IVX Standard
Nominal capacity from 7.1 kW to 30 kW (cooling mode). Connectable indoor units up to 4 units (3 units for 3HP model) and
total combination power from 90% up to 115%, outdoor units from 4 to 12HP, or 90% up to 110% for 3HP outdoor units.
Indoor Units
One of the main merits of Hitachi units range is the combinability and exibility of its indoor units SYSTEM FREE. This outs-
tanding technology makes possible to use the same indoor units with both UTOPIA and SET FREE outdoor units, making
easier the design, installation and control of the air conditioning installations.
1.1.3 Environment-friendly units
This range of HITACHI outdoor units uses environmentally-friendly R410A gas
refrigerant, and the RoHS and Green Dot regulations are applied throughout
the manufacturing and installation process to reect HITACHI’s awareness of
environmental respect and commitment.
R410A is totally environmentally-friendly since it does not contain any
substances that damage the ozone layer:
ODP (ozone depleting product) =0.
HITACHI’s UTOPIA series are very efcient and allow signicant energy
savings compared with conventional systems.
This energy efciency means less production of CO2, which causes the
greenhouse effect.