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With the Remeha Calenta Ace Combi Comfort System, you get the best combination of ultimate warmth comfort and energy savings in your home. This smart combination of the high-quality HR boiler and the intelligent eTwist thermostat is perfectly aligned and enables optimal performance.
Calenta Ace Boiler
The intelligent Calenta Ace is future-proof, thanks to the new device control system (eSmart Inside). The Calenta Ace boiler is equipped with brass hydroblocks. The heat exchanger used in the Calenta Ace has an applied surface treatment, which means it doesn't require physical cleaning. Installing this boiler is simple due to the integrated spirit level in the mounting bracket.
This model is equipped with an eccentric flue gas discharge.
Smart eTwist Thermostat
The eTwist is designed as a modulating room thermostat that allows the heating and cooling system to be efficiently controlled. It has a wired connection to the device. The eTwist can be connected to the internet via Wi-Fi, allowing it to be controlled using an app on a mobile device.
Technical Specifications:
| Feature | Value |
|---|---|
| Brand | Remeha |
| Supplier code | 7649968 |
| EAN code | 8713809288266 |
| Width | 450 mm |
| Height | 690 mm |
| Depth | 450 mm |
| Voltage | 230 V |
| 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 output for hot water | 38.5 kW |
| Nominal load upper value for hot water | 43.1 kW |
| Nominal load lower value for hot water | 38.8 kW |
| Energy efficiency of water heating (Nwh) | 87% |
| SEER (Ns) in average conditions | 98 |
| SEER (Ns) in colder conditions | 99.6 |
| SEER (Ns) in warmer conditions | 89.3 |
| Capacity profile | XXL |
| Energy efficiency class for space heating | A+ |
| Energy efficiency class for water heating | A |
| Nominal diameter hot water | DN 15 |
| Additional electricity consumption at full load (ELmax) | 0.005 kW |
| Useful heat output at nominal heat output and high-temperature operation (P4) | 34.5 kW |
| Useful efficiency at nominal heat output and high-temperature operation (n4) | 89.3% |
| Additional electricity consumption in standby mode (Psb) | 0.004 kW |
| Standby heat loss (Pstby) | 0.054 kW |
| With built-in economizer | Yes |
| Energy efficiency for space heating | 98% |
| Hot water flow rate according to EN 13203-1 | 20.3 l/min |
| Material of heat exchanger | Aluminum |
| Heating power adjustable | Yes |
| Nominal diameter cold water | DN 15 |
| Minimum flow threshold | 1.5 l/min |
| Built-in pump switching | Yes |
| Gas certification VR/SV | No |
| Gas certification NZ | Yes |
| CW label | 5 |
| Nominal load lower value | 34.8 kW |
| Nominal load upper value | 38.7 kW |
| Minimum operating pressure | 0.8 bar |
| Minimum return temperature | 20°C |
| Maximum gas inlet pressure | 30 mbar |
| Hot water capacity at 60°C | 11 l/min |
| Built-in weather-dependent controller | Yes |
| Built-in expansion vessel | No |
| Hydraulic resistance at dT 20°C | 46 kPa |
| Nominal output 80-60°C | 34.5 kW |
| Maximum supply temperature (operating temperature) | 90°C |
| Maximum operating pressure | 3 bar |
| Built-in filling/emptying valve | No |
| Built-in pressure relief valve | Yes |
| External pipe diameter supply | 22 mm |
| External pipe diameter return | 22 mm |
| Fuel connection | Compression fitting |
| External pipe diameter fuel | 15 mm |
| Air supply connection | Push-fit end |
| Nominal air supply pipe diameter | 80 mm |
| Flue gas discharge connection | Push-fit end |
| External pipe diameter cold water | 15 mm |
| External pipe diameter hot water | 15 mm |
| Condensate connection | Other |
| External pipe diameter condensate | 25 mm |
| Minimum gas inlet 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 discharge pipe diameter | 80 mm |
| Burner control high/low | No |
| Modulating burner control | Yes |
| Built-in manometer | Yes |
| Condensing | Yes |
| Gas certification HR | Yes |
| Efficiency | 99.1% |
| 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 output 50-30°C | 35.6 kW |
| Suitable for propane | Yes |
| Suitable for butane | No |
| Suitable for methane | Yes |
| Maximum allowable operating pressure | 3 bar |
| Nominal diameter supply | Other |
| Nominal diameter return | Other |
| Nominal diameter fuel | DN 15 |
| Hot water reserve | 1 l |
| Nominal diameter condensate | DN 25 |
| Conversion kit required | No |
| Built-in inlet combination | No |
| CW label | 5 |
| Gas certification HR | Yes |
| Gas certification NZ | Yes |
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