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With the Remeha Calenta Ace Combi Comfort System, you bring the best combination of ultimate warmth comfort and energy savings into your home. This smart combination of the high-quality HR boiler and the smart eTwist thermostat is perfectly synchronized and enables the best performance.
Calenta Ace Boiler
The intelligent Calenta Ace is ready for the (digital) future thanks to the new appliance control (eSmart Inside). The Calenta Ace boiler is equipped with brass hydroblocks. The heat exchanger used in the Calenta Ace features a surface treatment, which means it does not need to be physically cleaned. Installing this boiler is easy, as the mounting bracket comes with an integrated level.
This version comes with a concentric flue gas outlet.
Smart eTwist Thermostat
The eTwist is designed as a modulating room thermostat, which can efficiently control the heating and cooling system. It has a wired connection to the device. It is possible to connect the eTwist to the internet via a Wi-Fi connection, allowing the thermostat to be controlled with an app on a mobile device.
Technical Specifications:
| Feature | Value |
|---|---|
| Brand | Remeha |
| Supplier code | 7672230 |
| EAN code | 8713809289072 |
| Width | 450 mm |
| Height | 690 mm |
| Depth | 450 mm |
| Operating voltage | 230 V |
| Number of phases | 1 |
| Material quality | Other |
| Supply connection | Press fitting |
| Return connection | Press fitting |
| Nominal voltage | 196 - 253 V |
| Frequency | 50 Hz |
| Closed version | Yes |
| Nominal domestic hot water power | 27.8 kW |
| Nominal upper load for hot water | 31.1 kW |
| Nominal lower load for hot water | 28 kW |
| Energy efficiency for water heating (Nwh) | 88 % |
| SEER (Ns) in average conditions | 97 |
| 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 electricity 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 electricity consumption in standby mode (Psb) | 0.004 kW |
| Standby heat loss (Pstby) | 0.078 kW |
| With built-in economizer | Yes |
| Energy efficiency for space heating | 97 % |
| Hot water flow rate according to EN 13203-1 | 14.5 l/min |
| Heat exchanger material | Aluminum |
| Adjustable heating capacity | Yes |
| Nominal diameter for cold water | DN 15 |
| Minimum flow rate | 1.5 l/min |
| Built-in pump switching | Yes |
| Gas certification VR/SV | No |
| Gas certification 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 controller | Yes |
| Built-in expansion vessel | No |
| Hydraulic resistance at ΔT 20 °C | 35 kPa |
| Nominal power at 80-60 °C | 24.8 kW |
| Maximum supply temperature (operating temperature) | 90 °C |
| Maximum operating pressure | 3 bar |
| Built-in fill/empty valve | No |
| Built-in pressure relief valve | Yes |
| External pipe diameter for supply | 22 mm |
| External pipe diameter for return | 22 mm |
| Fuel connection | Press fitting |
| External pipe diameter for fuel | 15 mm |
| Air supply connection | Push fit |
| Nominal pipe diameter for air supply | 100 mm |
| Flue gas outlet connection | Push fit |
| 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 certification VR | No |
| Cold water connection | Press fitting |
| Hot water connection | Press fitting |
| Nominal pipe diameter for flue gas outlet | 60 mm |
| Burner control high/low | No |
| Modulating burner control | Yes |
| Built-in manometer | Yes |
| Condensing | Yes |
| Gas certification HR | Yes |
| Efficiency | 99.2 % |
| Pilot flame | No |
| Second return connection | No |
| Control signal on/off | Yes |
| Control signal high/low | No |
| Control signal 0-10V | Yes |
| Control signal OpenTherm | 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 permissible operating pressure | 3 bar |
| Nominal diameter for supply | Other |
| Nominal diameter for return | Other |
| Nominal diameter for fuel | DN 15 |
| Hot water storage | 1 l |
| Nominal diameter for condensate | DN 25 |
| Conversion kit required | No |
| Built-in inlet combination | No |
| CW label | 4 |
| Gas certification HR | Yes |
| Gas certification NZ | Yes |
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