Hitachi RAS-3HVRNME-AF, Installation And Operation Manual, Page: 15 / 40

15
PMML0205A rev.4 - 11/2012
ENGLISH
PART I- OPERATION
1 SAFETY SUMMARY
”
Identify the compatibility of the outdoor unit with YUTAKI S
and YUTAKI S80 indoor units by checking the black circle
into the indication poster.
YUTAKI S/S80
compatible
”
Verify, in accordance with the manuals which appear in the
outdoor 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.
”
No part of this manual may be reproduced without written
permission.
”
If you have any questions, contact your service contractor of
HITACHI.
”
This manual gives a common description and information
for this heat pump 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
characteristics of your system.
”
Signal words (DANGER, WARNING and CAUTION) are
used to identify levels of hazard seriousness. Definitions
for identifying 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 outdoor unit is exclusively to use for air to water
systems. It can not be used with indoor units in air to air
systems.
”
This heat pump has been designed for the following
temperature. Operate the air conditioner within this range:
Temperature
Maximum Minimum
Cooling Mode Outdoor 46 °C DB 10 °C DB
Heating Mode Outdoor 46 °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 heat pump. This manual gives a common description and
information for this heat pump which you operate as well as
for other models.

DANGER:
Pressure Vessel and Safety Device: This heat pump is equipped
with a high pressure vessel under PED (Pressure Equipment
Directive). The pressure vessel has been designed and tested
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 heat pump is protected from abnormal pressures.
However, if abnormally high pressure is applied to the refrigeration
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.

DANGER:
Do not pour water into the outdoor unit. These products are
equipped with electrical parts. If water contacts with electrical
components then it will cause a serious electrical shock.
Do not touch or adjust safety devices inside the indoor or
outdoor units. If these devices are touched or adjusted, it may
cause a serious accident.
Do not open the service cover or access the indoor or outdoor
units without disconnecting the main power supply.
In case of fire Turn OFF the main switch, put out the fire at once
and contact your service contractor.

CAUTION:
Refrigerant leakage can cause difficulty with breathing due to
insufficient air.

WARNING:
Do not use any sprays such as insecticide, lacquer, hair spray or
other flammable gases within approximately one (1) meter from
the system.
If circuit breaker or fuse is often activated, stop the system and
contact your service contractor.
Do not make service or inspections tasks by yourself. This works
must be performed by qualified service person.
Do not put any strange material (sticks, etc...) into the air inlet
and outlet. These units have high speed rotating fans and it is
dangerous that any object touches them.

NOTE:
It is recommended to ventilate the room every 3 or 4 hours.
Yutaki S indoor unit has two different ranges:
- Heating and cooling version (RWM-(2.0-10.0)FSN3E).
- Heating only version (RWM-(2.0-10.0)HFSN3E).
All the information in this manual related to cooling operation, only
applies to heating and cooling version (RWM-(2.0-10.0)FSN3E).
Yutaki S80:
- Heating only version: RWH-(4.0-6.0)FS(V)NFE
2 IMPORTANT NOTICE
SAFETY SUMMARY