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Airfel Digifel Duo 18 19.8 kW (KM1-18CE)

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Performant double-circuit gas boiler for wall mounting. Able to provide hot water and heating in a detached house or a spacious apartment with a total area of up to 158 m². Designed for wall mounting, it has a proven classic hydraulic circuit. Equipped with two separate heat exchangers for heating circuits (copper) and hot water circuits (stainless steel). It is positioned as a product of the middle price category. The closed combustion chamber with forced exhaust of flue gases with the help of a turbofan makes it possible to dispense with a special boiler room and install it in a residential area. The Airfel Digifel Duo 18 CE boiler is equipped with a high-quality low-noise three-speed pump and a modern digital control system. It is possible to connect a remote room thermostat and an outd...oor air temperature sensor, which are purchased separately. Able to prepare up to 10.2 L / min of hot water (at an inlet-outlet temperature delta of 25 °C). At the same time, the maximum temperature of hot water is 55 °C, which is completely safe for children. The boiler is able to operate in a fully automatic mode, reliable electric ignition and step modulation of the flame allow you to optimize the heat output and significantly reduce gas costs. Equipped with all necessary protective systems.
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Airfel Digifel Duo 18 19.8 kW
Energy source:gas
Mount:wall, dual-circuit
Boiler power:19.8 kW, area ~ 158 m²
Combustion chamber:closed, flue 60/100 mm
DHW temperature:from 35 °С, up to 55 °С

Performant double-circuit gas boiler for wall mounting. Able to provide hot water and heating in a detached house or a spacious apartment with a total area of up to 158 m². Designed for wall mounting, it has a proven classic hydraulic circuit. Equipped with two separate heat exchangers for heating circuits (copper) and hot water circuits (stainless steel). It is positioned as a product of the middle price category.

The closed combustion chamber with forced exhaust of flue gases with the help of a turbofan makes it possible to dispense with a special boiler room and install it in a residential area. The Airfel Digifel Duo 18 CE boiler is equipped with a high-quality low-noise three-speed pump and a modern digital control system. It is possible to connect a remote room thermostat and an outdoor air temperature sensor, which are purchased separately.

Able to prepare up to 10.2 L / min of hot water (at an inlet-outlet temperature delta of 25 °C). At the same time, the maximum temperature of hot water is 55 °C, which is completely safe for children. The boiler is able to operate in a fully automatic mode, reliable electric ignition and step modulation of the flame allow you to optimize the heat output and significantly reduce gas costs. Equipped with all necessary protective systems.

All specifications
Specifications Digifel Duo 18
Main
Energy sourcegas
Installationwall
Typedual-circuit (heating and DHW)
Heating area158 m²
Technical specs
Heat output19.8 kW
Power supply230 В
Power consumption110 W
Coolant min. T35 °С
Coolant max. T85 °С
Heating circuit max. pressure3 bar
DHW circuit max. pressure10 bar
Consumer specs
DHW min. T35 °С
DHW max. T55 °С
Performance (ΔT=25°C)10.2 L/min
"Summer" mode
Circulation pump
Boiler specs
Efficiency91 %
Combustion chamberclosed (turbocharged)
Flue diameter60/100 mm
Inlet gas pressure20 mbar
Max. gas consumption1.94 m³/h
Expansion vessel capacity7 L
Expansion vessel pressure1 bar
Connections
Mains water intake1/2"
DHW flow1/2"
Gas supply3/4"
Central heating flow3/4"
Central heating return3/4"
Safety
Safety systemsgas pressure drop
water overheating
flame loss
draft control
power outage
water circulation failure
frost protection
More specs
Dimensions (HxWxD)730x403x345 mm
Weight31 kg
Added to E-CatalogDecember 2017
P/N
KM1-18CE

The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
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a model with serious flaws
9 November 2019 
only one thing - appearance
during the first start-up, water started running out of the boiler. It turned out that the flow switch could not be seated tightly. They fixed it - but soon (six months later) the boiler stopped heating the batteries, because when the desired temperature was set, it increased several times in 2-3 seconds and the boiler immediately turned off. You set T 40 - and on the boiler it’s immediately 50-55, like it’s heated up and immediately turned off. It is impossible to heat hot water in the bath, because... the nozzle is designed in such a way that when the water is heated to 50 degrees, the boiler makes a sound like an airplane on the runway - you have to turn on the gas. Therefore, the water will no longer heat up as you want
 i recommend it don't buy
good model, I liked it.
4 August 2020 
A normal boiler with solutions proven over the years
Price, quality
There are no obvious shortcomings
use Airfel Digifel Duo 24 more than year
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