1.0. PREFACE
Please carefully read this manual before installation and operation. When reading this manual, please
be aware of the following key user notices:
• This unit measures based on AS/NZS 60335.2.40:2006
• For your personal safety when operating this system, always follow the instructions in the manual.
• The total capacity of the indoor units which runs at the same time cannot exceed that of the
outdoor units; otherwise the cooling (heating) peormance of each indoor unit will be aected.
Table 1: Minimum and Maximum Number of Connectable Units
Model LNMT100V4 LNMT114V4
Minimum number of connectable indoor units 2 2
Maximum number of connectable indoor units 4 5
Minimum capacity of connectable indoor units 18 18
Maximum capacity of connectable indoor units 48 51
• Switch the main power on 8 hours before starting the unit for a successful startup.
• It is a normal operation that the indoor unit fan will still run for 20~70 seconds aer the indoor unit
receives the “stop” signal to make full use of aer-heat for the next operation.
• When the running modes of the indoor and outdoor units are in conflict, this will be indicated on
the wired controller display for five seconds and then the indoor unit will stop. The unit will return
to normal operation by harmonizing their running modes: the cooling mode is compatible with the
dehumidifying mode and the fan mode can operate in all modes. If the supply power fails when
the unit is running, the indoor unit will send the “start” signal to the outdoor unit three minutes aer
power recovery.
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LENNOX MULTI SPLIT INVERTER
Outdoor Unit
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