LK Systems S2 Manuals

1 (4) Functional description Normal mode for the room thermostat when in operation is displaying current room tempera- ture. The temperature setting of the room thermostat can be changed using the “arrow up” or “ar- row down” touch buttons. When the buttons are touched, the temperature display shows more brightly. The thermostat is then displaying the set/desired room temperature. Once changes have been made with the “arrow up” or “arrow down” buttons, the thermostat returns to a redu- ced brightness level, once again displaying the current room temperature. The thermostat comes with a function LED which shows whether the set temperature has been reached or not. If the LED is off, the set tempera- ture has been reached. Installation When fitting, bear the following in mind: • Fitting height, approx. 1.5 m above floor level. • Best installed on an inner wall. • Make sure there is circulation of air. • Avoid secondary heat from other heat sources, such as sunlight, lighting, etc. Electrical connection 1. Remove the back cover of the thermostat. 2. Fit the back cover to the wall. If the back cover is to be fitted to an electrical box, the pattress which comes supplied with the thermostat should be used. 3. Electrical installation must be performed as per the circuit diagram below. LK Room Thermostat S2 is an electronic room thermostat with a triac output specially adapted for the LK Floor Heating System. The room ther- mostat is used together with electrothermal ac- tuators of normally closed (NC) type. To achieve maximum energy efficiency the thermostat uses so-called self-modulating technology via signal pulses to the valve actuator. The self-modulating technology adjusts the output of the underfloor heating to the set temperature. Once the room temperature approaches the set temperature, the output of the heating is gradually reduced to pre- vent overheating. LK Room Thermostat S2, 24V NC is available in two different designs, S2 and S2 EXT, where S2 EXT can be connected to LK Remote Sensor ICS/S2 for controlling e.g. floor temperature. The room thermostat is also used in so-called public environments, where the temperature setting of the thermostat can be locked by pressing buttons in combination. Product range • LK Room Thermostat S2 NC (Article no. 243 43 98): Basic thermostat for con- trolling room temperature • LK Room Thermostat S2 EXT NC (Article no. 243 44 00): Thermostat for controlling room temperature or for controlling e.g. floor temperature via LK Remote Sensor ICS/S2 (Article no. 241 73 23). Accessories • LK Remote Sensor ICS/S2, matches room ther- mostat S2 EXT (Article no. 241 73 23) Spare parts • LK Pattress S2, comes supplied with the thermo- stat, (Article no. 33454) Particular benefits to note: • Self-modulating technology via signal pulses for maximum energy efficiency. • Modern design with polished vitreous surface and touch temperature setting. • Intended for mounting directly on a wall, or on an electrical installation box. • Option of connecting a remote temperature sen- sor for model S2 EXT. • The room thermostat settings can be locked by pressing buttons in combination. • The temperature can be reduced via a separate timer (timer not included). • Silent thermostat function. • Easy functional check via LED. LK Room Thermostat S2, 24 V NC EN.33.C.149.1511 Assembly instructions | LK Room Thermostat S2, 24 V NC

1 Assembly Instruction | Dismount and Re-Mount LK Room Thermostat S2 EN.33.C.163.1411 Dismount and Re-Mount LK Room Thermostat S2 1 2 3 4 This assembly instruction shows how to correctly dismount and re-mount LK Room Thermostat S2. With the help of a screwdriver, unsnap the clips on either side of the thermostat. The front of the thermostat disconnects from the wall mount. Bring the lower part of the thermostat outwards from the wall. Bring the thermostat straight upwards along the wall.