Hitachi YUTAKI S Serie Manuel D'installation page 15

SYSTEM DESCRIPTION
3. SYSTEM DESCRIPTION
■ Long piping for high-rise buildings.
■ Flexibility of indoor unit control.
■ Space saving.
■ Easy installation.

NOTE:
For more information refer to indoor unit installation and
operation manual PMML0208A(RWM-(8.0/10.0)FSN3E) or
PMML0257A(RWM-(8.0/10.0)HFSN3E).
4. BEFORE OPERATION

CAUTION
:
- Supply electrical power to the system for approximately
12 hours before start-up or a long shutdown. Do not start
the system immediately after power supply, it may cause
a compressor is not heated well.
- When the system is started after a shutdown longer that
approximately 3 months, it is recommended to check the
system by your service contractor.
- Turn OFF the main switch when the system is to be
stopped for a long period of time: If the main switch is
not turned OFF, electricity will be used, because the oil
heater is always energised during compressor stopping.
- Make sure that the outdoor unit is not covered with
snow or ice. If covered, remove it by using hot water
(approximately 50 ºC). If the water temperature is higher
that 50 ºC, it will cause damage to plastic parts.
PMML0215A rev.1 - 02/2012
17