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The P20C is an energy-efficient boiler designed for the project market, providing both heating and hot water. It features a compact design, modular construction, high performance, easy installation, and low total cost of ownership. The P-Series is compatible with the Energion M and can also be used with other hybrid heat pumps.
| Feature | Value |
|---|---|
| Brand | Atag |
| Supplier Code | TZ20B50H |
| EAN Code | 8719874613545 |
| Width | 440 mm |
| Height | 700 mm |
| Depth | 275 mm |
| Number of Phases | 1 |
| Material Quality | Other |
| Flow Connection | Compression fitting |
| Return Connection | Compression fitting |
| Nominal Voltage | 196 - 253 V |
| Frequency | 50 Hz |
| Sealed System | Yes |
| Nominal Hot Water Power | 23.5 kW |
| Nominal Hot Water Load (Higher Heating Value) | 26.7 kW |
| Nominal Hot Water Load (Lower Heating Value) | 24 kW |
| Water Heating Efficiency (Nwh) | 85 % |
| SEER (Ns) under Average Conditions | 93 % |
| Capacity Profile | XL |
| Energy Efficiency Class (Space Heating) | A |
| Energy Efficiency Class (Water Heating) | A |
| Nominal Hot Water Diameter | 1/2" (15 mm) |
| Additional Power Consumption at Full Load (ELmax) | 0.048 kW |
| Useful Heat Output at Nominal Load (P4) and High Temperature | 17.6 kW |
| Useful Efficiency at Nominal Load (n4) and High Temperature | 87.9 % |
| Standby Power Consumption (Psb) | 0.004 kW |
| Standby Heat Loss (Pstby) | 0.047 kW |
| Built-in Economiser | No |
| Space Heating Efficiency | 93 % |
| Heat Exchanger Material | Stainless Steel (RVS) |
| Adjustable Heating Power | Yes |
| Nominal Cold Water Diameter | 1/2" (15 mm) |
| Minimum Hot Water Flow Rate | 1.5 l/min |
| Integrated Pump Control | Yes |
| Gaskeur VR/SV | No |
| Gaskeur NZ | No |
| Nominal Load (Lower Heating Value) | 18 kW |
| Nominal Load (Higher Heating Value) | 20 kW |
| Minimum Operating Pressure | 1 bar |
| Minimum Return Temperature | 20 °C |
| Maximum Gas Inlet Pressure | 60 mbar |
| Hot Water Capacity at 60 °C | 6 l/min |
| Integrated Weather Compensation Controller | Yes |
| Built-in Expansion Vessel | No |
| Water-Side Resistance at ΔT 20 °C | 20 kPa |
| Nominal Power 80-60 °C | 17.7 kW |
| Maximum Flow Temperature (Operating Temperature) | 85 °C |
| Maximum Operating Pressure | 3 bar |
| Built-in Filling/Drain Valve | No |
| Built-in Pressure Relief Valve | No |
| External Flow Pipe Diameter | 22 mm |
| External Return Pipe Diameter | 22 mm |
| Fuel Connection | Compression fitting |
| External Fuel Pipe Diameter | 15 mm |
| Air Supply Connection | Socket |
| Nominal Air Supply Duct Diameter | 100 mm |
| Flue Gas Exhaust Connection | Socket |
| External Cold Water Pipe Diameter | 15 mm |
| External Hot Water Pipe Diameter | 15 mm |
| Condensate Connection | Other |
| External Condensate Pipe Diameter | 21.5 mm |
| Minimum Gas Inlet Pressure | 20 mbar |
| Suitable for Natural Gas | Yes |
| Gaskeur VR | No |
| Cold Water Connection | Compression fitting |
| Hot Water Connection | Compression fitting |
| Nominal Flue Gas Exhaust Diameter | 60 mm |
| Burner Control High/Low | No |
| Modulating Burner Control | Yes |
| External Expansion Connection Diameter | 15 mm |
| Built-in Pressure Gauge | Yes |
| Condensing Technology | Yes |
| Gaskeur HR | Yes |
| Pilot Flame | No |
| Second Return Connection | No |
| Control Signal On/Off | Yes |
| Control Signal High/Low | No |
| Control Signal 0-10V | No |
| Control Signal OpenTherm | Yes |
| Operation as Open System (Air Supply Possible) | Yes |
| Nominal Power 50-30 °C | 19.4 kW |
| Suitable for Propane | No |
| Suitable for Butane | No |
| Suitable for Methane | No |
| Max. Allowable Operating Pressure | 3 bar |
| Nominal Flow Diameter | 3/4" (20 mm) |
| Nominal Return Diameter | 3/4" (20 mm) |
| Nominal Fuel Diameter | 1/2" (15 mm) |
| Hot Water Storage Volume | 0 l |
| Conversion Kit Required | No |
| Built-in Safety Valve | No |
| Expansion Connection | Compression fitting |
| CW Label | 3 |
| Gaskeur HR | Yes |
| Gaskeur NZ | No |
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