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The P27C is an energy-efficient heating boiler for the project market, providing heat and hot water. It is characterized by compactness, modularity, high performance, ease of installation, and low total cost of ownership. The P series works in collaboration with the Energion M and is also compatible with other hybrid heat pumps.
| Feature | Value |
|---|---|
| Brand | Atag |
| Supplier Code | TZ27B50H |
| EAN Code | 8719874612913 |
| Discount Group | 066 |
| Width | 440 mm |
| Height | 700 mm |
| Depth | 275 mm |
| Number of Phases | 1 |
| Material Quality | Other |
| Supply Connection | Compression fitting |
| Return Connection | Compression fitting |
| Nominal Voltage | 196 - 253 V |
| Frequency | 50 Hz |
| Closed Version | Yes |
| Nominal Hot Water Power | 28.1 kW |
| Nominal Upper Hot Water Load | 31.9 kW |
| Nominal Lower Hot Water Load | 28.7 kW |
| Water Heating Efficiency (Nwh) | 87% |
| SEER (Ns) under average conditions | 94% |
| Capacity Profile | XL |
| Space Heating Efficiency Class | A |
| Water Heating Efficiency Class | A |
| Nominal Diameter Hot Water | 1/2" (15 mm) |
| Supplementary Electricity Consumption at Full Load (ELmax) | 0.039 kW |
| Useful Heat Output at Nominal Heat Output and High Temperature Operation (P4) | 22.1 kW |
| Useful Efficiency at Nominal Heat Output and High Temperature Operation (n4) | 88.3% |
| Supplementary Electricity Consumption in Standby Mode (Psb) | 0.004 kW |
| Standby Heat Loss (Pstby) | 0.047 kW |
| Built-in Economizer | No |
| Space Heating Efficiency | 94% |
| Heat Exchanger Material | Stainless steel (RVS) |
| Adjustable Heating Power | Yes |
| Nominal Diameter Cold Water | 1/2" (15 mm) |
| Hot Water Threshold | 1.5 l/min |
| Built-in Pump Switching | Yes |
| Gas Certification VR/SV | No |
| Gas Certification NZ | No |
| Nominal Lower Load | 22.5 kW |
| Nominal Upper Load | 25 kW |
| Minimum Operating Pressure | 1 bar |
| Minimum Return Temperature | 20°C |
| Maximum Gas Supply Pressure | 60 mbar |
| Hot Water Capacity at 60°C | 7.5 l/min |
| Built-in Weather-Dependent Regulator | Yes |
| Built-in Expansion Vessel | No |
| Water Resistance at ΔT 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 Pressure Relief Valve | No |
| External Pipe Diameter Supply | 22 mm |
| External Pipe Diameter Return | 22 mm |
| Fuel Connection | Compression fitting |
| External Pipe Diameter Fuel Line | 15 mm |
| Air Supply Connection | Socket |
| Nominal Air Supply Channel Diameter | 100 mm |
| Flue Gas Outlet Connection | Socket |
| External Pipe Diameter Cold Water | 15 mm |
| External Pipe Diameter Hot Water | 15 mm |
| Condensate Connection | Other |
| External Pipe Diameter Condensate | 21.5 mm |
| Minimum Gas Supply Pressure | 20 mbar |
| Suitable for Natural Gas | Yes |
| Gas Certification VR | No |
| Cold Water Connection | Compression fitting |
| Hot Water Connection | Compression fitting |
| Nominal Flue Gas Outlet Diameter | 60 mm |
| Burner Control High/Low | No |
| Modulating Burner Control | Yes |
| External Pipe Diameter Expansion Connection | 15 mm |
| Built-in Manometer | Yes |
| Condensing | Yes |
| Gas Certification 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 Version (Air Supply) Possible | Yes |
| Nominal Power 50-30°C | 24.3 kW |
| Suitable for Propane | No |
| Suitable for Butane | No |
| Suitable for Methane | No |
| Maximum Allowed Operating Pressure | 3 bar |
| Nominal Diameter Supply | 3/4" (20 mm) |
| Nominal Diameter Return | 3/4" (20 mm) |
| Nominal Diameter Fuel | 1/2" (15 mm) |
| Hot Water Storage | 0 l |
| Conversion Kit Required | No |
| Built-in Inlet Combination | No |
| Expansion Connection | Compression fitting |
| CW Label | 4 |
| Gas Certification HR | Yes |
| Gas Certification NZ | No |
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