Hitachi RAS-10HNCE, Installation And Operation Manual

Page: 13 / 372

PMML0251A rev.2 - 02/2013
Important notice
13
ENGLISH
4 IMPORTANT NOTICE
• Verify, in accordance with the manuals which appear in the
outdoor and indoor units, that all the information required for
the correct installation of the system is included. If this is not
the case, contact your distributor.
• HITACHI pursues a policy of continuing improvement
in design and performance of products. The right is therefore
reserved to vary specifications without notice.
• HITACHI cannot anticipate every possible circumstance that
might involve a potential hazard.
• This air conditioner has been designed for standard air condi-
tioning for human beings. For use in other applications, please
contact your HITACHI dealer or service contractor.
• No part of this manual may be reproduced without written per-
mission.
• If you have any questions, contact your service contractor of
HITACHI.
• This manual gives a common description and information
for this air conditioner which you operate as well as for other
models.
• Check and make sure that the explanations of each part of
this manual correspond to your air conditioner model.
• Refer to the models codification to confirm the main charac-
teristics of your system.
• Signal words (DANGER, WARNING and CAUTION) are used
to identify levels of hazard seriousness. Definitions for iden-
tifying hazard levels are provided below with their respective
signal words.
• It is assumed that this unit will be operated and serviced by
English speaking people. If this is not the case, the customer
should add safety, caution and operating signs in the native
language of the personal.
• This air conditioner has been designed for the following tem-
perature. Operate the air conditioner within this range:
Temperature
Maximum Minimum
Cooling
Mode
Indoor 32°C DB/23°C WB 21°C DB/15°C WB
Outdoor 46 ºC DB -5 °C DB
Heating
Mode
Indoor 27 °C DB 15 °C DB
Outdoor 15 °C WB -20 °C WB
DB: Dry Bulb Temperature
WB: Wet Bulb Temperature
• These operations modes are controlled by the remote control
switch.
• This manual should be considered as a permanent part of the
air conditioner. This manual gives a common description and
information for this air conditioner which you operate as well
as for other models.
D A N G E R
Pressure Vessel and Safety Device: This air conditioner is
equipped with a high pressure vessel under PED (Pressure Equip-
ment Directive). The pressure vessel has been designed and test-
ed before shipment according to PED. Also, in order to prevent the
system from an abnormal pressure, a high pressure switch, which
needs no field adjustment, is utilized in the refrigeration system.
Therefore, this air conditioner is protected from abnormal pres-
sures. However, if abnormally high pressure is applied to the re-
frigeration cycle including the high pressure vessel(s), it will result
in serious injury or death due to explosion of the pressure vessel.
Do not apply a pressure higher than the following pressure to the
system, by modifying or changing the high pressure switch.
C A U T I O N
This unit is designed for commercial and light industrial applica-
tion. If installed in house hold appliance, it could cause electro-
magnetic interference.
Start-up and Operation: Check to ensure that all the stop valves
are fully opened and no obstacle exists at the inlet/outlet sides
before start-up and during the operation.
Maintenance: Periodically check the high pressure side pres-
sure. If the pressure is higher than the maximum allowable pres-
sure, stop the system and clean the heat exchanger or remove
the cause.
Maximum Allowable Pressure and High Pressure Cut-out Value:
Outdoor Unit Model Refrigerant Maximum Allowable
Pressure (MPa)
High Pressure Switch
Cut-out Value (MPa)
RAS-(3-10)H(V)N(P/C)E R410A 4.15 4.00 ~ 4.10
_PMML0251A_r2.indb 13 06/02/2013 9:04:50