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Providing indoor climate comfort

Application guide

LXRCC20-AGU-0509-E

LXRCC20 Remote control

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Summary of Contents for LXRCC20

Page 1: ...Providing indoor climate comfort Application guide LXRCC20 AGU 0509 E LXRCC20 Remote control ...

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Page 3: ...ing changeover Operating modes normal energy saving and frost protection mode or OFF Operating mode changeover input for remote control Selectable control parameters Operating voltage AC 230 V Use Typical use Control of the room temperature in individual rooms that are heated or cooled with two pipe fan coil units equipped with an electrical heater For opening or closing a valve for switching an e...

Page 4: ...er must be equipped with a separate safety device thermal cutout The heating or cooling valve receives the OPEN command via control output Y11 when 1 the measured room temperature lies by half the switching differential below the setpoint heating mode or above the setpoint cooling mode and 2 the valve has been fully closed for more than one minute The heating or cooling valve receives the CLOSE co...

Page 5: ...e electrical heater has been switched on for more than one minute When two heating sequences are selected the two outputs cannot be switched ON the same time Two outputs must be switched ON seperately with at least 1 minute delay In case of set point change the two heaters are allowed to switch OFF together For this operation DIL switch no 8 must be set to ON factory setting The electrical heater ...

Page 6: ...C and the setpoint adjusted by the user will be ignored If frost protection operation is locked DIP switch no 4 in position ON standby is locked also which means that the controller will not switch to standby but to OFF In frost protection mode the electrical heater is always enabled independent of the position of DIL switch no 8 behaviour of electrical heater in cooling mode In energy saving mode...

Page 7: ...and fan operation 3 Setting facility for minimum setpoint limitation in increments of 1 K 4 Setting facility for maximum setpoint limitation in increments of 1 K 5 Room temperature setpoint knob 6 Set of DIP switches DIP switch no Meaning Position ON Position OFF 1 Fan control Fan control is temperature dependent in all operating modes Fan control in normal operation is tem perature independent 1 ...

Page 8: ...sed to direct solar radiation Mounting height is about 1 5 m above the floor The connecting wires can be run to the controller from a recessed conduit box Check the settings of the DIL switches no 1 through no 8 and change them if required It setpoint limitation is required use the minimum and maximum limitation facility en ergy saver After applying power the controller makes a reset during which ...

Page 9: ...ion at 25 C max 0 7 K Switching differential in heating mode SDH select able 1 K or 4 K Switching differential in cooling mode SDC select able 0 5 K or 2 K Dead zone Xdz in normal operation 2 K or 5 K Setpoint Energy saving mode heating 16 C Setpoint Energy saving mode cooling 28 C Setpoint Standby 8 C Operation Climatic conditions Temperature Humidity to IEC 721 3 3 class 3K5 0 50 C 95 r h Transp...

Page 10: ... operating mode changeover switch operating action can be selected Q1 Control output Fan speed I AC 230 V Q2 Control output Fan speed II AC 230 V Q3 Control output Fan speed III AC 230 V Y11 Control output Valve AC 230 V N O contact for N C valves Y12 Control output Valve AC 230 V N C contact for N O valves Y21 Control output Electric heating AC 230 V Connection diagram L L B1 M B2 D1 GND Q1 Q2 Q3...

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Page 12: ...to quality the Specifications Ratings and Dimensions are subject to change without notice and without incurring liability Improper installation adjustment alteration service or maintenance can cause property damage or personal injury Installation and service must be performed by a qualified installer and servicing agency Direct Sales Offices LENNOX DISTRIBUTION Distributors and Agents Algeria Aust...

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