The Cointra CPA Low NOx is a high-performance, low-emission water heater designed for domestic hot water production. It is powered by natural gas or LPG and features a compact, water-cooled, battery-powered burner with electronic ignition, making it suitable for indoor installation. The unit is designed to operate in partially protected environments with temperatures ranging from -5°C to +60°C.
Function Description:
The primary function of the Cointra CPA Low NOx is to provide on-demand hot water for domestic use. It achieves this through a battery-powered electronic ignition system that activates the burner when hot water is drawn. The unit is designed for efficient combustion with low nitrogen oxide (NOx) emissions, complying with current environmental standards.
Important Technical Specifications:
The manual provides detailed technical data for three models: CPA 6, CPA 11, and CPA 14.
General:
- Gas Category: II2H3+ (ES-PT-GB) / II2HM3+ (IT) / II2E+3+ (FR) / I2E+ (BE) / I3+ (BE)
- NOx Emission Class: 6 (<56 mg/kWh)
- Degree of Protection: IPX4D
- Supply Voltage: 3V = (Batteries)
- Type of Unit: B11BS
CPA 6:
- Maximum Heat Capacity (Q): 11.8 kW
- Minimum Heat Capacity (Q): 6.3 kW
- Maximum Heat Output (Pn): 10.4 kW
- Minimum Heat Output (Pn): 5.4 kW
- Performance at Max. Power: 87%
- Burner Injectors G20 (Natural Gas): 14 x 0.82 mm
- Gas Supply Pressure G20: 20 mbar
- Max. Gas Delivery G20: 1.25 m³/h
- Min. Gas Delivery G20: 0.67 m³/h
- Burner Injectors G230 (Natural Gas): 14 x 0.95 mm
- Gas Supply Pressure G230: 20 mbar
- Max. Gas Delivery G230: 0.97 m³/h
- Min. Gas Delivery G230: 0.52 m³/h
- Burner Injectors G31/G30 (LPG): 8 x 0.49 / 6 x 0.47 mm
- Gas Supply Pressure G31/G30: 37 mbar
- Max. Gas Delivery G31/G30: 0.92 m³/h
- Min. Gas Delivery G31/G30: 0.49 m³/h
- Max. Operating Pressure (PMS): 10 bar
- Min. Operating Pressure: 0.2 bar
- DHW Delivery (Δ25°C): 6.0 l/min
- DHW Delivery (Δ30°C): 5.0 l/min
- Empty Weight: 8.5 kg
- Sound Power Level (LWA): 57 dB
- Emissions of Nitrogen Oxides (NOx): 52 mg/kWh (NG), 37 mg/kWh (LPG)
- ErP Energy Efficiency Class (Water Heating): A
- Declared Load Profile: XS
CPA 11:
- Maximum Heat Capacity (Q): 21.1 kW
- Minimum Heat Capacity (Q): 8.1 kW
- Maximum Heat Output (Pn): 18.9 kW
- Minimum Heat Output (Pn): 7.0 kW
- Performance at Max. Power: 87%
- Burner Injectors G20 (Natural Gas): 24 x 0.85 mm
- Gas Supply Pressure G20: 20 mbar
- Max. Gas Delivery G20: 2.23 m³/h
- Min. Gas Delivery G20: 0.86 m³/h
- Burner Injectors G230 (Natural Gas): 24 x 0.95 mm
- Gas Supply Pressure G230: 20 mbar
- Max. Gas Delivery G230: 1.73 m³/h
- Min. Gas Delivery G230: 0.66 m³/h
- Burner Injectors G31/G30 (LPG): 18 x 0.49 / 6 x 0.47 mm
- Gas Supply Pressure G31/G30: 37 mbar
- Max. Gas Delivery G31/G30: 1.64 m³/h
- Min. Gas Delivery G31/G30: 0.63 m³/h
- Max. Operating Pressure (PMS): 10 bar
- Min. Operating Pressure: 0.2 bar
- DHW Delivery (Δ25°C): 10.8 l/min
- DHW Delivery (Δ30°C): 9.0 l/min
- Empty Weight: 9.50 kg
- Sound Power Level (LWA): 58 dB
- Emissions of Nitrogen Oxides (NOx): 37 mg/kWh (NG), 58 mg/kWh (LPG)
- ErP Energy Efficiency Class (Water Heating): A
- Declared Load Profile: M
CPA 14:
- Maximum Heat Capacity (Q): 26.8 kW
- Minimum Heat Capacity (Q): 10.7 kW
- Maximum Heat Output (Pn): 23.8 kW
- Minimum Heat Output (Pn): 9.3 kW
- Performance at Max. Power: 87%
- Burner Injectors G20 (Natural Gas): 28 x 0.85 mm
- Gas Supply Pressure G20: 20 mbar
- Max. Gas Delivery G20: 2.84 m³/h
- Min. Gas Delivery G20: 1.13 m³/h
- Burner Injectors G230 (Natural Gas): 28 x 0.95 mm
- Gas Supply Pressure G230: 20 mbar
- Max. Gas Delivery G230: 2.20 m³/h
- Min. Gas Delivery G230: 0.88 m³/h
- Burner Injectors G31/G30 (LPG): 16 x 0.49 / 12 x 0.47 mm
- Gas Supply Pressure G31/G30: 37 mbar
- Max. Gas Delivery G31/G30: 2.08 m³/h
- Min. Gas Delivery G31/G30: 0.83 m³/h
- Max. Operating Pressure (PMS): 10 bar
- Min. Operating Pressure: 0.2 bar
- DHW Delivery (Δ25°C): 13.6 l/min
- DHW Delivery (Δ30°C): 11.4 l/min
- Empty Weight: 13.50 kg
- Sound Power Level (LWA): 59 dB
- Emissions of Nitrogen Oxides (NOx): 42 mg/kWh (NG), 62 mg/kWh (LPG)
- ErP Energy Efficiency Class (Water Heating): A
- Declared Load Profile: M
Usage Features:
- Control Panel: The unit features a user-friendly control panel with a DHW temperature indication, battery charge indicator, burner power adjustment, and temperature adjustment knobs. A fixed battery symbol indicates very low battery, while a flashing symbol means the battery is dead and needs replacement.
- Turning On/Off: To turn on, the user rotates the knob to the desired water heating level. The unit automatically starts when hot water is drawn and turns off when demand ceases.
- Temperature Adjustment: The water temperature selector knob allows users to increase or decrease the temperature.
- Manual Burner Power Adjustment: The knob can be turned counter-clockwise for minimum power or clockwise for maximum power.
- Safety Warnings: The manual highlights critical safety precautions, including avoiding contact with hot surfaces near the peephole, ensuring proper ventilation, and only allowing authorized technicians to perform installation and maintenance.
- Gas Conversion: The unit is factory-set for a specific gas type (methane, LPG, or Propane-Air). Conversion to another gas type requires a conversion kit and must be performed by an authorized technician.
Maintenance Features:
- Installation and Maintenance: These operations must be performed by a registered technician in accordance with current standards and manufacturer's instructions. Tampering with sealed adjustment devices is prohibited.
- Pre-Ignition Checks: Before igniting, verify gas connection tightness, ensure the hydraulic system is filled and air-free, check for water leaks, confirm adequate grounding and electrical connection, and verify correct gas pressure.
- Operation Checks: During operation, light the unit, ensure fuel and water systems are tight, check the efficiency of air and flue gas ducts, verify correct gas valve modulation, and ensure easy ignition.
- Periodic Checks: An authorized technician should perform annual inspections to check control and safety devices, exhaust vent efficiency, air and flue gas duct integrity, and cleanliness of the burner and exchanger.
- Cleaning: The casing and exterior parts can be cleaned with a soft, damp cloth and soapy water. Abrasive detergents or solvents should not be used.
- Battery Replacement: The manual provides instructions for replacing the batteries, which involves unscrewing the A screws, rotating the casing, lifting it, and accessing the battery box. Before performing this, the gas cock must be closed.
- Fume Exhaust Safety Device (Fume Thermostat): This device ensures correct exhaust of flue gases. It must not be deactivated. If it cuts in, the flue gas outlet and exhaust system should be checked. Replacement must be done by qualified technicians using original parts.
- Water Hardness: If water hardness exceeds 25°Fr (1°F=10ppm CaCO3), the water must be treated to prevent deposits on the unit.
Need help?
To Next Page
General
