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The intelligent Calenta Ace is ready for the (digital) future, thanks to the new device control (eSmart Inside). The Calenta Ace boiler is equipped with brass hydraulic blocks. The heat exchanger used in the Calenta Ace has a surface treatment, meaning it does not need to be physically cleaned. The installation of this boiler is simple as the mounting bracket has an integrated spirit level.
The system can be optionally expanded with a (semi-)automatic refill unit, which allows the system to be automatically and intelligently refilled via the boiler’s control panel, the eTwist, or through the convenient eTwist app.
This version is equipped with a concentric flue gas outlet.
Technical Specifications:
| Feature | Value |
|---|---|
| Brand | Remeha |
| Supplier Code | 7672228 |
| EAN Code | 8713809289058 |
| Width | 450 mm |
| Height | 690 mm |
| Depth | 450 mm |
| Nominal Voltage | 230 V |
| Number of Phases | 1 |
| Material Quality | Other |
| Inlet Connection | Compression fitting |
| Return Connection | Compression fitting |
| Nominal Voltage | 196 - 253 V |
| Frequency | 50 Hz |
| Closed Construction | Yes |
| Nominal Domestic Hot Water Capacity | 27.8 kW |
| Nominal Upper Domestic Hot Water Load | 31.1 kW |
| Nominal Lower Domestic Hot Water Load | 28 kW |
| Energy Efficiency of Water Heating (Nwh) | 88 % |
| SEER (Ns) in average conditions | 94 |
| SEER (Ns) in colder conditions | 99.2 |
| SEER (Ns) in warmer conditions | 89.4 |
| Capacity Profile | XL |
| Energy Efficiency Class for Space Heating | A |
| Energy Efficiency Class for Water Heating | A |
| Nominal Diameter for Hot Water | DN 15 |
| Additional Power Consumption at Full Load (ELmax) | 0.004 kW |
| Useful Heat Output at Nominal Heat Output and Operation at High Temperature (P4) | 24.8 kW |
| Useful Efficiency at Nominal Heat Output and Operation at High Temperature (n4) | 89.4 % |
| Additional Power Consumption in Standby (Psb) | 0.004 kW |
| Standby Heat Loss (Pstby) | 0.078 kW |
| With Built-in Economizer | Yes |
| Energy Efficiency for Space Heating | 94 % |
| Domestic Hot Water Flow according to EN 13203-1 | 14.5 l/min |
| Heat Exchanger Material | Aluminium |
| Adjustable Heating Power | Yes |
| Nominal Diameter for Cold Water | DN 15 |
| Minimum Flow Rate | 1.5 l/min |
| Built-in Pump Switching | Yes |
| Gas Certificate VR/SV | No |
| Gas Certificate NZ | Yes |
| CW Label | 4 |
| Nominal Lower Load | 25 kW |
| Nominal Upper Load | 27.8 kW |
| Minimum Operating Pressure | 0.8 bar |
| Minimum Return Temperature | 20 °C |
| Maximum Gas Supply Pressure | 30 mbar |
| Hot Water Capacity at 60 °C | 8.2 l/min |
| Built-in Weather Dependent Regulator | Yes |
| Built-in Expansion Vessel | No |
| Hydraulic Resistance at dT 20 °C | 35 kPa |
| Nominal Power 80-60 °C | 24.8 kW |
| Maximum Flow Temperature (Operating Temperature) | 90 °C |
| Maximum Operating Pressure | 3 bar |
| Built-in Fill/Drain Valve | No |
| Built-in Overpressure Valve | Yes |
| External Pipe Diameter for Inlet | 22 mm |
| External Pipe Diameter for Return | 22 mm |
| Fuel Connection | Compression fitting |
| External Pipe Diameter for Fuel Connection | 15 mm |
| Air Supply Connection | Push-fit connection |
| Nominal Air Supply Pipe Diameter | 100 mm |
| Flue Gas Outlet Connection | Push-fit connection |
| External Pipe Diameter for Cold Water | 15 mm |
| External Pipe Diameter for Hot Water | 15 mm |
| Condensate Connection | Other |
| External Pipe Diameter for Condensate | 25 mm |
| Minimum Gas Supply Pressure | 20 mbar |
| Suitable for Natural Gas | Yes |
| Gas Certificate VR | No |
| Cold Water Connection | Compression fitting |
| Hot Water Connection | Compression fitting |
| Nominal Flue Gas Pipe Diameter | 60 mm |
| Burner Control High/Low | No |
| Burner Control Modulating | Yes |
| Built-in Manometer | Yes |
| Condensing | Yes |
| Gas Certificate HR | Yes |
| Efficiency | 99.2 % |
| Pilot Flame | No |
| Second Return Connection | No |
| On/Off Control Signal | Yes |
| High/Low Control Signal | No |
| 0-10V Control Signal | Yes |
| OpenTherm Control Signal | Yes |
| Operation as Open Version (Air Supply) Possible | Yes |
| Nominal Power 50-30 °C | 25.5 kW |
| Suitable for Propane | Yes |
| Suitable for Butane | No |
| Suitable for Methane | Yes |
| Maximum Allowable Operating Pressure | 3 bar |
| Nominal Diameter for Inlet | Other |
| Nominal Diameter for Return | Other |
| Nominal Diameter for Fuel | DN 15 |
| Hot Water Stock | 1 l |
| Nominal Diameter for Condensate | DN 25 |
| Conversion Kit Required | No |
| Built-in Inlet Combination | No |
| CW Label | 4 |
| Gas Certificate HR | Yes |
| Gas Certificate NZ | Yes |
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