ENGLISH
1 GENERAL INFORMATION
1.1 GENERAL INFORMATION
1.1.1 General notes
© Copyright 2021 Johnson Controls-Hitachi Air Conditioning Spain, S.A.U. – All rights reserved.
No part of this publication may be reproduced, copied, filed or transmitted in any shape or form without the permission of Johnson
Controls-Hitachi Air Conditioning Spain, S.A.U.
Within the policy of continuous improvement of its products, Johnson Controls-Hitachi Air Conditioning Spain, S.A.U. reserves the
right to make changes at any time without prior notification and without being compelled to introducing them into previously sold
products. 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 specific models. No claims will be accepted
based on the data, illustrations and descriptions included in this manual.
No type of modification must be made to the equipment without prior, written authorization from the manufacturer.
1.1.2 Introduction
Hitachi proudly announces the newest complete range of air-to-water heat pumps in its award-winning YUTAKI range.
YUTAKI units produce heating and domestic hot water like any oil or gas boiler, but transforming renewable energy from the outside
air into heat. Air to water heat pumps extract the free energy present in the air, which is enough to heat a home up to a comfortable
temperature, even on the coldest winter day. Every kW of electricity used to power the heat pump can yield up to more than 5 kW of
energy for heating; this provides savings of up to 80% on heating expenses compared to a traditional fossil fuel boiler.
The new YUTAKI series, based on state-of-the-art technology, does not only achieve an outstanding performance in space heating
but also provides domestic hot water with high efficiency. Additionally, cooling operation for summer can also be provided installing
the dedicated “Cooling kit” accessory of Hitachi.
The system is simple to control; its new user controller (PC-ARFH2E) improves the acclaimed and successful design used with the
existing LCD controller and provides a great deal of new functions like: wizard start-up configuration, auto cool/heat, improved timer,
etc.
1.1.2.1 Overview of YUTAKI system
Split system - YUTAKI S, YUTAKI S COMBI
It consists of one outdoor unit and one indoor unit. The outdoor unit extracts the heat present in the air, increases its refrigerant
temperature and transmits it to the water circuit using the plate heat exchanger of the indoor unit where the heat is taken to radiators
(fan-coils), underfloor heating components or both (2nd temperature area).
Two types of indoor unit can be used in heating split systems:
YUTAKI S
The indoor unit of YUTAKI S is designed for space heating, in wall-mounted installation. It is convenient for new installations with low
capacity requirements (Well isolated installations, high efficiency radiators...).
YUTAKI S COMBI
The indoor unit of YUTAKI S COMBI is conceived as a floor standing unit. It is prepared for heating operation as well as for domestic
hot water production. For this purpose, it has a built-in domestic hot water tank (220 L). In line with YUTAKI S units, it meets the
needs of installations with low capacity requirements.
Also, new models of YUTAKI S COMBI have been specially designed for the UK market that meet the requirements referred in the
UK Building Regulations.
GENERAL INFORMATION
PMML0575 rev.1 - 09/2021
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