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PMML0129A rev.4 - 02/2010
ENGLISH
3. SYSTEM DESCRIPTION
■ Maximum 4 Indoor Unit can be controlled.
■ Long piping for high-rise buildings.
■ Various combinations, 7 types and 34 models of indoor units
type and capacity from 5.0 kW to 25.0kW.
■ Flexibility of indoor unit control.
■ Space saving.
■ Easy installation
.
(m)
UNIT POWER
RAS-8
~12HRNM
Maximum Piping Length Lo-i
Actual Length
100
Equivalent Length
120
Maximum Piping Length Ho-i
Outdoor Unit is higher than Indoor Unit
30
Indoor Unit is higher than Outdoor Unit
20
Maximum piping Lift Hi-i
3
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.
SYSTEM DESCRIPTION
