Luna Air is the ideal boiler for outdoor hanging installation: in partially protected places (e.g., balcony) and also in the open air, with the addition of the outdoor cover kit.

 

Luna Air can also be installed built-in with the specific containment box, available as an accessory. The special telescopic fittings kit (supplied as an accessory) for built-in installation (with gas and domestic water tap) should also be provided. Inside the package is the bracket for inserting the boiler into the containment box.

• 1:7 Wide modulation range: higher efficiency given by less switching on and off: with a high modulation ratio, the reduction of continuous on/off cycles results in a significant reduction in consumption (by 8-10%) and an equal reduction in pollutant emissions
• Digital control panel that allows easy programming and immediate boiler operation diagnostics with logging of the latest anomalies (STANDARD in Luna Air 24/28 models)
• The boiler is designed to operate down to -15°C. In addition, the antifreeze function, provides automatic burner ignition, preventing freezing phenomena
• Depth of only 238 mm, which allows its installation in most of the cases on the market
  
   

Advantages:

• Remote digital control panel with LCD display STANDARD in Luna Air models
• Wall-mounted installation in partially protected locations
• Open-air hanging installation with cover kit, available as an accessory
• Electrogalvanized shroud for outdoor use
• Minimum operating temperature: -15°C
• Antifreeze function and IPX5D degree of protection
• Wide 1:7 modulation range greater efficiency and quietness
• GAC (gas adaptive control): automatic combustion control
• Built-in installation with accessory not included: the ultra-compact 770x470x238 mm dimensions of the boiler make it installable in the majority of cases on the market; built-in telescopic fittings kit available as an accessory
• Provision for pairing with Baxi integrated solar system
• Ø50 mm rigid and flexible exhaust pipe connection - for 24 kW model total length (exhaust+suction) 40 meters: solution for chimney renovation and in case of replacing a natural draft boiler with a condensing boiler
  
   

Hydraulic system:

• Electric three-way diverter valve
• Stainless steel premix burner
• Stainless steel water/flue gas exchanger
• Stainless steel oversized sanitary heat exchanger that allows the boiler to condense even in sanitary operation
• Modulating fan with electronic speed variation
• Automatic by-pass
• High-efficiency circulation pump with total modulation
• Pump antilock system and three-way valve that trips every 24 hours
• 3-bar heating circuit safety valve
  
   

Control system:

• Safety thermostat against overtemperature of water/flue exchanger
• Hydraulic pressure switch that shuts off gas in case of water shortage
• Safety NTC probe against flue gas overtemperatures
• Temperature control using NTC probes
• Total antifreeze device
• Electronic thermometer
• Digital heating circuit pressure gauge
  
   

Features:

 

Heating and DHW production:

• Rated DHW heating capacity 28.9kW
• Rated heating heat flow rate 24.7 kW
• Reduced heating capacity 3.9 kW
• Rated domestic heating capacity 28 kW
• Rated rated heat output 24 kW
• Useful heat output at rated thermal power and high temp regime 24 kW
• Useful heat output at 30% nom. heat output and low temp regime 8 kW
  
   

Heating:

• XL load profile
• Seasonal energy efficiency of space heating ?s 93%.
• Energy efficiency of water heating 86%.
• Useful efficiency at nom. heat output and high temp regime 87.9%
• Useful efficiency at 30% nom. heat output and low temp regime 98%
• Useful efficiency (pci) Pn - average temperature 70°C 97.6%
• Useful efficiency (pci) at 30% - return temperature 30°C 108.8%
• Useful efficiency (pci) intermediate - average temperature 70°C 98.0%
• Emissions of nitrogen oxides NOx 17 mg/kWh
• Minimum operating temperature -15 C
• Expansion tank capacity 8 liters
• Heating circuit water temperature regulation 25-80 C
• Domestic water temperature regulation 35-60 C
• Specific flow rate according to EN 13203-1 13.4 l/min
• Domestic water production ?T 25°C 16.1 l/min
  
   

Sanitary:

• Minimum domestic water flow rate 2 l/min
• Minimum heating circuit water pressure 0.5 bar
• Minimum dynamic sanitary circuit water pressure 0.15 bar
• Maximum heating circuit water pressure 3 bar
• Maximum sanitary circuit water pressure 8 bar
• Maximum length of concentric exhaust-suction pipe Ø 60/100 10 meters
• Maximum length of split exhaust-suction pipe Ø 80 meters 80
• Flue gas mass flow rate max 0.014 kg/s
• Flue gas mass flow rate min 0.002 kg/s
• Flue gas temperature max 80 C
  
   

Technical data:

• Dimensions (h x l x p) - boiler 770x470x238mm
• Dimensions (h x l x p) - with case 1170x600x245mm
• Net weight 32.5kg
• Rated electrical power 99W
• Auxiliary electricity consumption at full load 0.042 kW
• Auxiliary electricity consumption at partial load 0.013 kW
• Auxiliary power consumption stand-by mode 0.003 kW
• Sound power level, indoor 50 dB
• Degree of protection IPX5D
  
   

Connections:

• Heating system flow G3/4
• Domestic hot water supply (G1/2) models 24 and 28
• GAS inlet (G3/4)
• Domestic cold water inlet / System loading (G1/2)
• Heating system return (G3/4)