The calculator features separate sections able to simultaneously record the following:• thermal energy in a heating and cooling circuit
-• sanitary cold water volume
-• sanitary hot water volume. The unit has been designed to facilitate the installation and reduce the time needed for the commissioning operations. The ECCM32 unit is equipped with a wired “M-Bus” interface and a wired “Local-bus” interface that allow the user to read, by means of compatible equipment, the consumption from inside one’s own apartment. Ambient operating temperature: +5 ÷ +55 °CStorage temperature: -20 ÷ +55 °CDimensions: 141 x 77,5 x 47 mmDegree of protection: IP52Environmental class: A (E1, M1)Maximum value of thermal power: 33000 kW with a pulse rate < 100 l/pulse
- 330000 kW with a pulse rate ≥ 100 l/pulseTemperature measurement range: 2 ÷ 150°C (Θmin=2°C Θmax=150°C)Temperature difference: 3 ÷ 148°C (ΔΘmin=3°C ΔΘmax=148°C)Heating/cooling switching: According to the sign of temperature difference between sensors (ΔΘ)
- in any case, no energyrecording takes place in case of –3°C < ΔΘ < +3°CDisplay unit features: Liquid crystal display (LCD) with 8 digits, 19 icons and 2 auxiliary digitsEnergy measurement unit on the LCD: MWh (standard), configurable kWh, MJ and GJType of sensors: Pt500 sensors pairs with 2-wire lead (Platinum precision resistor, IEC 60751 compliantType of sensor cables: UnshieldedRMS Sensor current value: < 72 µA (measurements made every 30 seconds)Pulse inputs: One input for the heating/cooling flow meter
- two inputs for the sanitary water flow metersPulse inputs class: IB (in accordance with the EN 1434-2 Standard)Pulse inputs circuit type: Pull-up (1 MΩ) with reference to ground (GND terminal)
- voltage: +3. 6 VPulse input compatibility: Flow Meters with class OA (reed output) and class OC (open-collector) pulse outputsMax. frequency / Pulse min. duration: 5Hz – 100msFlow Meter installation position: Return (standard), configurable on the forwardPulse rate: 1 – 2,5 – 10 – 25 – 100 – 250 – 1000 – 2500 litres/pulseHeat carrier fluid: Water (standard), configurable for water and glycol solutionM-Bus communication interface: Compliant to EN 1434-3, with galvanic separationM-Bus baud rate: 2400 baud (standard), also configurable to 300 or 9600 baudType of cable for M-Bus connection: Telephone cable J-Y(ST) Y2 x 2 x 0,8mm²Local Bus interface: Compliant to EN 13757-6, 2400 baud, proprietary unidirectional protocolType of cable for Local Bus connection: Two wire cable (2 x 0. 6mm² , max. length: 50m)Billing recording: 12 fixed monthly recordings, two periods with programmable dates (DD/MM)Anomaly/alarm recording: Circular log, four events (type of event and date)Other recordings: Heat carrier fluid max. flow rate and max. powerType of connections: Removable, 14-pole terminal block (5mm pitch)Electric featuresPower supply: Battery-operatedBattery rated voltage: 3,6VType of battery: Pre-wrapped package (2xAA – capacity: 4. 8 Ah – spare part code: 1592269)Battery life: 10 years operation + 1 year stock
