Baxi Luna Century Condensing boiler 35kW A7870639
BXI A7870639
8022945044583
Baxi Luna Century 35kW A7870639 is a condensing boiler for heating and DHW with a 45 L stainless steel tank: methane convertible to LPG/propane-air without kit, modulation 1:10, stainless steel exchangers and My Baxi app (with Mago not included) for comfort and efficiency.
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Type: condensing boiler for heating + DHW
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Nominal heating thermal power: 28.9 kW
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Nominal DHW thermal power: 34.9 kW
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Instantaneous DHW production: up to 19.5 l/min
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DHW load profile: XXL
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Heating energy class: A (with Baxi Mago A+ kit not included)
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DHW energy class: A
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Fuel: methane, convertible to LPG and propane-air (kit not required)
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Hydrogen blend compatibility: up to 20%
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Modulation: 1:10
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Exchangers: stainless steel (water/flue gas + single coil)
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Tank: 45 Litres stainless steel
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DHW expansion vessel: 2 L standard
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Hydraulic group: brass, electric 3-way valve
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Pump: high efficiency with total modulation
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Controls/comfort: GAC, Power set, standard climate control, zone setup
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Flue gas exhaust: split Ø80 mm standard; connection Ø50 mm; pressurised collective
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Protection: total antifreeze, degree IPX5D
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Dimensions (H×W×D): 763 × 450 × 334 mm
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Included accessories: system/tank drain taps, template and hooks, condensate drain pipe
€1,537.20
Items Available: 5
: 3
Frequently bought together
Baxi Luna Century 35: complete condensing boiler for high comfort
The Baxi Luna Century 35kW (A7870639) is designed for those seeking a modern and versatile boiler, capable of efficiently managing both heating and domestic hot water production. Its strength, besides condensation and wide modulation, is the integration of a 45-litre stainless steel boiler, which improves the continuity and stability of DHW, especially with multiple users or close requests.
The compact dimensions for its category (763 × 450 × 334 mm) make it suitable for advanced domestic installations and technical environments where space is valuable, without sacrificing features typical of higher ranges.
Powerful domestic hot water: XXL profile and high flow rate
With an XXL load profile and an instantaneous production declared up to 19.5 l/min, Luna Century 35 is indicated when DHW is a central requirement: large families, homes with multiple bathrooms, frequent showers, taps used simultaneously. The stainless steel boiler further supports the availability of hot water, reducing temperature drops during demand phases.
Stainless steel exchangers and brass hydraulics: reliability over time
The heart of the boiler is built to last:
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stainless steel water/flue gas exchanger with wide passages (more tolerant and easier to manage in maintenance)
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single coil stainless steel exchanger with wide water passage sections
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brass hydraulic group with three-way electric diverter valve
Completing the system are a high-efficiency fully modulating pump, automatic by-pass, and anti-blocking functions (pump and 3-way valve with periodic intervention), useful for maintaining the system's reliability even after periods of inactivity.
Modulation 1:10 and GAC: real efficiency and always correct combustion
The wide 1:10 modulation range helps keep the boiler more often in stable operation, limiting ignitions and shutdowns. This translates into:
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more consistent temperature at home
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greater quietness
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better seasonal efficiency
Additionally, the GAC (Gas Adaptive Control) system performs automatic combustion control, improving performance continuity even with changing conditions (gas, draft, usage).
Ready for today and tomorrow: gas, hydrogen, and hybrid systems
Luna Century is methane-powered but convertible to LPG and propane air without a conversion kit, making adaptation easier based on the available supply. It also supports operation with a mixture of up to 20% hydrogen, a requirement increasingly demanded in the context of energy transition. It is also compatible with factory-made hybrid systems, allowing you to build an advanced solution with a heat pump where provided by the project.
Installation and flue gas discharge: pre-arranged solutions
The boiler includes a standard Ø80 mm split discharge, in addition to the possibility of connecting to a Ø50 mm discharge pipe (rigid or flexible) for chimney rehabilitation interventions and connection to collective pressurized chimneys. These details facilitate installation and increase options in condominium renovation.
Simple and smart control: display, climate control, and My Baxi
The control panel is backlit, with clear icons and texts, knob, and menu buttons for intuitive management. The boiler has standard climate control and is prepared for zoned systems. For remote management, the My Baxi ecosystem is available via the Baxi Mago accessory, useful for monitoring, scheduling, and optimizing consumption directly from a smartphone.
Gas and hydraulic connection sizes
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Radiator supply G 3/4
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Sanitary outlet G 1/2
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GAS Gas inlet G 3/4
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Sanitary inlet G 1/2
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Radiator return G 3/4
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Condensate discharge connectable to Ø 22 pipe
| THERMAL PERFORMANCE | |
|---|---|
| Nominal thermal flow rate sanitary | 34.9 kW |
| Nominal thermal flow rate heating | 28.9 kW |
| Useful thermal power (P4, high temperature) | 28 kW |
| Load profile | XXL |
| ENERGY EFFICIENCY | |
| Space heating energy class | A |
| Domestic hot water energy class | A |
| Seasonal space heating energy efficiency (?s) | 94 % |
| Useful efficiency at nominal power (high T) ?4 | 87.9 % |
| Useful efficiency at 30% (low T) ?1 | 98.8 % |
| EMISSIONS AND LIMITS | |
| NOx emissions | 21.7 mg/kWh |
| Minimum operating temperature | -5 °C |
| DOMESTIC HOT WATER | |
| Specific flow rate EN 13203-1 | 16.2 l/min |
| DHW production ΔT 25 °C | 19.5 l/min |
| SYSTEM | |
| Heating expansion vessel capacity | 10 l |
| Type of gas | Methane / LPG / Propane-air |
| Protection degree | IPX5D |
| DIMENSIONS AND WEIGHT | |
| Dimensions (H × W × D) | 763 × 450 × 334 mm |
| Net weight | 32.5 kg |
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Data sheet
- Type: Boilers
- Model: Natural gas/LPG/Propane
- Thermal power: 35 kW
- Energy class: A
- Series: Luna Century
