Important Notice; Before Operation - Hitachi RCIM-1.0FSN4 Installations- Und Betriebshandbuch

Important notice

3 IMPORTANT NOTICE
This air conditioner has been designed for standard air
conditioning for human beings. For use in other applications,
please contact your HITACHI dealer or service contractor.
The air conditioning system should only be installed by qualified
personnel, with the necessary resources, tools and equipment,
who are familiar with the safety procedures required to
successfully carry out the installation.
PLEASE READ AND FAMILIARISE YOURSELF WITH
THE MANUAL BEFORE STARTING WORK ON THE
INSTALLATION OF THE AIR CONDITIONING SYSTEM.
Failure to observe the instructions for installation, use and
operation described in this Manual may result in operating failure
including potentially serious faults, or even the destruction of the
air conditioning system.
It is assumed that the air conditioning system will be installed
and maintained by responsible personnel trained for the
purpose. If this is not the case, the customer should include all
the safety, caution and operating signs in the native language of
the personnel responsible.
DB: Dry Bulb; WB: Wet Bulb
* The temperature may change depending on the outdoor unit

4 BEFORE OPERATION

!
C A U T I O N
• Supply electrical power to the system for approximately 12 hours
before start-up after long shutdown. Do not start the system
immediately after power supply, it may cause a compressor failure,
because the compressor is not heated well.
• Make sure that the outdoor unit is not covered with snow or ice. If
covered, remove it by using hot water (approximately 50ºC). If the water
temperature is higher than 50ºC, it will cause damage to plastic parts.
4.1 EFFICIENT USE OF INDOOR UNIT
• Do not leave a window or a door open.
The operating efficiency will be decreased.
It may cause dew condensation of the indoor unit. (Ventilate
a room sufficiently too.)
• Attach a curtain or a blind to a window.
Direct sunlight is prevented and the cooling efficiency will be
increased.
• Do not use heating appliances during the cooling operation
as possible.
The cooling efficiency will be decreased. It may cause dew
condensation and dropping dew.
3 PMML0363A rev.2 - 08/2016 - P5416559
Indoor
Cooling operation
Outdoor
Indoor
Heating operation
Outdoor
Do not install the unit in the following places, as this may lead to
a fire, deformities, rusting or faults:
• Places where oil is present (including oil for machinery).
• Places with a high concentration of sulphurous gas, such as
spas.
• Places where flammable gases may be generated or
circulate.
• Places with a saline, acidic or alkaline atmosphere.
Do not install the unit in places where silicon gas is present. Any
silicon gas deposited on the surface of the heat exchanger will
repel water. As a result, the condensate water will splash out
of the collection tray and into the electrical box. Water leaks or
electrical faults may eventually be caused.
Do not install the unit in a place where the current of expelled
air directly affects animals or plants as they could be adversely
affected.
This heat pump air conditioner has been designed for the
following temperatures. Operate the heat pump air conditioner
within this range:
Maximum Minimum
32ºC DB / 23ºC WB 21ºC DB / 15ºC WB
43ºC DB * -5ºC DB *
27 ºC DB 15ºC DB
15ºC WB* -20ºC WB *
• When the system is started after a shutdown longer than approximately
3 months, it is recommended that the system be checked by your
service contractor.
• Turn OFF the main switch when the system is stopped for a long
period of time. If the main switch is not turned OFF, electricity is
consumed, because the oil heater is always energized during
compressor stopping.
• Use a circulator if warm air stays around ceiling.
The comfortability will be increased. Contact your distributor
for the detail.
• Change the air flow direction downward if the ceiling surface
gets dirty.
It is recommended to change the air flow direction by approx.
30º downward from the levelness.
• Turn OFF the main power source if the indoor unit is not
used for a long time.
If not, the standby electricity charges will have to be paid
even if the indoor unit is unused.