User manual LG LA090HPO

[. . . ] IF IN DOUBT - ASK! The RBC IT2 ­ PE time switch interface is intended for use with all the LG cooling only and heat pump indoor units in the RAV range and it should be fitted in accordance with these instructions. The RBC IT2 - PE allows these systems to be externally switched on and off by means of any volt-free external terminals rated at 230 volts a/c. [. . . ] Typically this will be a time switch, automatic restart after a power failure, frost thermostat protection or other form of switching. For advice in this area, please call Toshiba Air Conditioning Technical on (01276) 694205 It is important to note that if a RBC IT2 - PE interface is used the standard 24hour timer functions on any of the Toshiba remote or central controllers must not be selected to avoid conflict in switching commands. Do not use the standard RBC WT1-PE 7 ­ day timer. The remote controller on/off button will be overridden whenever an interface is connected to socket CN06, regardless of whether the RBC IT2 ­ PE is in use or not. All other functions of the remote controller remain unaffected. When more than one system is connected for group operation, it is essential to arrange the power supply to the outdoor units so that the control circuits for all the indoor units are fed from the same phase. 1a Heat Pump Splice Red External Switch 1 2 3 A B C RBC IT2 - PE Black Orange Yellow INDOOR UNIT TERMINALS Terminals 1 & 2 are 230 volts a/c. Site Wiring 1 2 3 4 5 6 7 8 SOLDERED CONNECTIONS CN06 ON INDOOR PCB BLACK LEAD 1. 5m Note: Socket CN06 is referred to as PJ06 on earlier RAV Heat Pump indoor units, the wiring remains the same. Fig. 1b Cooling Only Splice Red External Switch 1 2 3 A B C 1 2 3 4 5 6 7 8 RBC IT2 - PE Black Orange Yellow INDOOR UNIT TERMINALS Terminals 1 & 3 are 230 volts a/c. Site Wiring SOLDERED CONNECTIONS CN06 ON INDOOR PCB BLACK LEAD 1. 5m IMPORTANT Ensure that the electrical feed to the time clock is the same electrical phase as the " L" terminal on the single phase units or " L1" on the three phase units. These terminals are the single phase derivation from the outdoor unit in each case. Zero voltage should be measured between terminal 1 of the Type T2 and terminal 1 of the indoor unit when energised. [. . . ] These terminals are the single phase derivation from the outdoor unit in each case. Zero voltage should be measured between terminal 1 of the Type T2 and terminal 1 of the indoor unit when energised. [. . . ]