VIMAR WELL-CONTACT PLUS 02952

Characteristics

• Supply Voltage: BUS 29 V SELV.
• Consumption: 10 mA.
• Terminals: TP bus; Digital input for NO or NC contact (potential-free, SELV); Max distance for digital input: 30 m; NO relay output (24 V~ SELV 4A cos φ 1; 24 V~ SELV 2A cos φ 0.6).
• Operating Temperature: 0 °C - +40 °C (indoor use).
• ErP Classification (Reg. EU 811/2013): ON/OFF: Class I (1%); PI: Class IV (2%); With KNX proportional analog output actuator: Class V (3%).
• Circuitry: Contains only SELV circuits, which must be kept separate from dangerous voltage circuits.
• Display: RGB backlit touch display with colors configurable via ETS parameters (fixed color or dynamic change based on set-point via Ecometer function).
• Internal Temperature Probe: Measurement range 0-40 °C; Accuracy: ≤±0.5 °C (15-30 °C), ≤±0.8 °C (at extremes).
• External Temperature Probe: Measurement range -20 to 70 °C; Accuracy comparable to internal probe (error increases beyond stated temperatures, max 2.0 °C @ 70 °C).
• Manageable Temperature Sensors: Internal NTC; External NTC (art. 02965.1, 20432, 19432, 14432); Up to 8 KNX temperature sensors via bus (DPT_Value_Temp data).
• Reference Temperature: Weighted average of available temperature sources (internal NTC, external NTC, bus sensors) set via ETS. Sources with weight 0 are excluded.
• System Management: 2/4 pipe systems, ON/OFF and proportional valves; 3-speed, proportional, and continuous proportional fan coils; Neutral zone (4-pipe only); Control algorithms: On/Off, I, PI.
• Boost Function: Second control stage for each thermostat (A/B) to accelerate temperature achievement.
• Ambient Humidity Display: Can display humidity data received from the bus.
• Dew Point: Functionality available.
• System Protection Functions: Antifreeze, Overheat, Floor temperature protection, Generic alarm.
• Scenarios: Supports 16 scenarios.

Configuration

Configuration, including physical address, parameters, and operation, is performed using ETS software. Refer to the Well-contact Plus manual on www.vimar.com for detailed ETS communication objects and parameters. Users can modify temperature set-point and fan coil speed via front buttons, which forces the thermostat into manual operation.

Using the Thermostat

The thermostat allows setting:

• Operating mode (Comfort, Stand-by, Economy, Protected, OFF) by tapping the mode icon.
• Fan coil speed by tapping the speed icon.
• Room temperature set-point increase by tapping the '+' icon.
• Room temperature set-point decrease by tapping the '-' icon.

Set-point adjustment limits can be configured by the control room or reception via the 'Client Permissible Control' parameter. Thermostat B selection is made by tapping the 'B' icon.

Display Icons

• [Window Open Icon]: Window open indicator.
• [Comfort Icon]: Comfort mode (Guest present in room).
• [Standby Icon]: Standby mode (Guest not present in room).
• [Economy Icon]: Economy mode (Room free).
• [OFF Icon]: Device is off.
• [Protected Mode Icon]: Protected mode.
• [Locked Buttons Icon]: Buttons locked.
• [Heating Valve Active Icon]: Heating valve is active.
• [Air-conditioning Valve Active Icon]: Air-conditioning valve is active.
• [Heating Boost Icon]: Heating with boost function.
• [Air-conditioning Boost Icon]: Air-conditioning with boost function.
• [Temperature Unit Icon]: Unit of measurement for temperature (°C or °F).
• [Humidity Icon]: Relative humidity display.
• [Dew Point Alarm Icon]: Dew point alarm indicator.
• [Temperature Alarm Icon]: Temperature alarm for exceeding threshold.
• [Fan Coil Speed v1 Icon]: Fan coil speed 1.
• [Fan Coil Speed v2 Icon]: Fan coil speed 2.
• [Fan Coil Speed v3 Icon]: Fan coil speed 3.
• [Proportional Speed Icon]: Proportional speed control indicated by a circular icon divided into 10 parts (each representing 10% of maximum speed).
• [Thermostat B Menu Icon]: Temperature display and thermostat B menu.

Installation Rules

Installation must be performed by qualified personnel in compliance with local electrical installation regulations. The appliance should be installed in flush- or wall-mounting boxes at a height of 1.5 m from the floor, in a position suitable for accurate ambient temperature detection. Avoid installation in niches, behind doors/curtains, or near heat sources/atmospheric factors, especially on perimeter walls or near heat-generating appliances.

• Important: Max. external sensor cable length: 60 m (use twisted cable, min. 0.8 mm²). Max. input cable length: 30 m. Ensure the BUS power supply unit's earth terminal is correctly connected to the system earth. Provide sufficient cable length for device extraction to access the configuration button.

Regulatory Compliance

• EMC Directive: Standards EN 50428, EN 50491.
• REACH Regulation (EU) No. 1907/2006 - Art.33: Product may contain traces of lead.
• WEEE (Waste Electrical and Electronic Equipment): The crossed-out bin symbol indicates separate collection at the end of the product's life. Users should take the product to designated collection centers or return it to the retailer. Free disposal is possible for products under 25 cm at retailers with sales areas of at least 400 m². Proper disposal and recycling help prevent negative environmental and health effects.

Front View and Connections

The thermostat features a touchscreen interface with several buttons:

• Operation Setup Button: For configuring device settings.
• Fan Coil Speed Button: To adjust fan coil speed.
• Selected Thermostat Button: To select between thermostat A or B.
• Setpoint Increase Button: To increase the desired temperature.
• Setpoint Decrease Button: To decrease the desired temperature.

The display shows the current operating mode (e.g., Comfort active), current temperature, heating valve status, fan coil speed, ambient humidity, and allows for setpoint adjustments.

Connections:

• KNX Bus Line: For communication within the KNX system.
• Input: For connecting a digital input contact (NO or NC).
• Common Input: Terminal for common connection.
• Relay Output (C NO): For controlling external devices.
• External Temperature Sensor Terminals: For connecting an external temperature sensor.