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The ATAG i-Series boilers are an example of comfort and efficiency. The i Zone boiler is "heat pump ready" and can seamlessly work with the ATAG Energion M heat pump and other heat pumps. The wall-hung boiler provides comfortable heating and quick, abundant hot water. Filling a bathtub quickly or using the shower with plenty of water is no problem for the ATAG i-Zone.
Choosing Stainless Steel (RVS) The stainless steel heat exchanger, the "heart" of the boiler, is the most important and also the most vulnerable part of the boiler. This heat exchanger is made from stainless steel, which is resistant to corrosion and wear and provides maximum heat transfer. This not only reduces maintenance frequency but also heating costs. After 15 years, the P-Series is still as energy-efficient as on day one after purchase.
Energy-Efficient Heating with ATAG One The ATAG One is a smart thermostat that thinks along with you and looks ahead. Thanks to the so-called "switch-on optimization," the ATAG One helps determine when warmth is needed in your home—completely according to your preferences.
| Feature | Value |
|---|---|
| Brand | Atag |
| Supplier Code | TY28B50H |
| EAN Code | 8719874612272 |
| Discount Group | 065 |
| Width | 440 mm |
| Height | 700 mm |
| Depth | 275 mm |
| Number of Phases | 1 |
| Material Quality | Other |
| Supply Connection | Compression |
| Return Connection | Compression |
| Nominal Voltage | 196 - 253 V |
| Frequency | 50 Hz |
| Closed Design | Yes |
| Nominal Power for Hot Water | 28.1 kW |
| Nominal Power Upper Hot Water Limit | 31.9 kW |
| Nominal Power Lower Hot Water Limit | 28.7 kW |
| Energy Efficiency of Water Heating (Nwh) | 87% |
| SEER (Ns) under average conditions | 94 |
| Capacity Profile | XL |
| Energy Efficiency Class for Space Heating | A |
| Energy Efficiency Class for Water Heating | A |
| Nominal Diameter of Hot Water Connection | 1/2" (15) |
| Additional Electricity Consumption at Full Load (ELmax) | 0.039 kW |
| Useful Heat Output at Nominal Heat Output and High Temperature (P4) | 22.1 kW |
| Efficiency at Nominal Heat Output and High Temperature (n4) | 88.3% |
| Additional Electricity Consumption in Standby Mode (Psb) | 0.004 kW |
| Standby Heat Loss (Pstby) | 0.047 kW |
| With Built-in Economizer | No |
| Energy Efficiency for Space Heating | 94% |
| Max Hydrogen Mix with Natural Gas | 30% |
| Suitable for Low Calorific Value Natural Gas | Standard factory setting |
| Suitable for High Calorific Value Natural Gas | Manually adjustable |
| Suitable for Propane | With conversion kit, not included |
| Suitable for Butane | Not suitable |
| Suitable for Methane | Not suitable |
| Suitable for LPG | Not suitable |
| Suitable for Hydrogen | With conversion kit, included |
| Material of Heat Exchanger | Stainless Steel (RVS) |
| Adjustable Heating Power | Yes |
| Nominal Diameter of Cold Water Connection | 1/2" (15) |
| Minimum Flow Rate | 1.5 l/min |
| Built-in Pump Switch | Yes |
| Gas Approval VR/SV | No |
| Gas Approval NZ | No |
| Nominal Power Lower Value | 22.5 kW |
| Nominal Power Upper Value | 25 kW |
| Minimum Operating Pressure | 1 bar |
| Minimum Return Temperature | 20 °C |
| Maximum Gas Inlet Pressure | 60 mbar |
| Hot Water Capacity at 60 °C | 8 l/min |
| Built-in Weather Dependent Controller | Yes |
| Built-in Expansion Tank | No |
| Water-side Resistance at dT 20 °C | 20 kPa |
| Nominal Power 80-60 °C | 22.1 kW |
| Maximum Supply Temperature (Operating Temperature) | 85 °C |
| Maximum Operating Pressure | 3 bar |
| Built-in Fill/Drain Valve | No |
| Built-in Overpressure Valve | Yes |
| External Pipe Diameter Supply | 22 mm |
| External Pipe Diameter Return | 22 mm |
| Fuel Connection | Compression |
| External Pipe Diameter Fuel | 15 mm |
| Air Supply Connection | Socket |
| Nominal Channel Diameter Air Supply | 100 mm |
| Flue Gas Outlet Connection | Socket |
| External Pipe Diameter Cold Water | 15 mm |
| External Pipe Diameter Hot Water | 15 mm |
| Condensate Connection | Flexible |
| External Pipe Diameter Condensate | 21.5 mm |
| Minimum Gas Inlet Pressure | 20 mbar |
| Suitable for Natural Gas | Yes |
| Gas Approval VR | No |
| Cold Water Connection | Compression |
| Hot Water Connection | Compression |
| Nominal Channel Diameter Flue Gas Outlet | 60 mm |
| Burner Control High/Low | No |
| Modulating Burner Control | Yes |
| Nominal Diameter Expansion Connection | 1/2" (15) |
| External Pipe Diameter Expansion Connection | 15 mm |
| Built-in Manometer | Yes |
| Condensing | Yes |
| Gas Approval 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 Design (Air Supply) | Yes |
| Nominal Power 50-30 °C | 24.3 kW |
| Suitable for Propane | Yes |
| Suitable for Butane | No |
| Suitable for Methane | No |
| Max Allowable Operating Pressure | 3 bar |
| Nominal Diameter Supply | 3/4" (20) |
| Nominal Diameter Return | 3/4" (20) |
| Nominal Diameter Fuel | 1/2" (15) |
| Hot Water Storage | 0 l |
| Nominal Diameter Condensate | 3/4" (20) |
| Conversion Kit Required | Yes |
| Built-in Inlet Combination | No |
| Expansion Connection | Compression |
| CW Label | 4 |
| Gas Approval HR | Yes |
| Gas Approval NZ | No |
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