INSTALLATION, OPERATION AND MAINTENANCE MANUAL
FW cooling only range – Monosplit single-phase
Caution: the use of a manual that is not up to date with the condensing unit version does not
engage the responsibility of LTB
17 INSTALLATION: CHECK THE CONFIGURATION OF THE IU
The installation must be carried out by a person with the appropriate skills and qualifications.
When installing the indoor units, the installer must check the proper configuration of the switches on the printed circuit
board specific to each type of cassette* or ducted indoor unit. Wall mounted indoor units and consoles are not affected.
* Electro-mechanically modified cassettes are not affected.
The installer will have to take into account that it is the IU that authorizes the start or stop of the CU and that manages the
protocols of the different modes.
The positioning of the switches is done during the interconnection of the IUs to the CU. The installer should refer to the
interconnection diagram supplied with the indoor units.
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