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ATON Atmo 12.5E 12.5 kW

Photos - Boiler ATON Atmo 12.5E 12.5 kW
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One of the most affordable single-circuit gas boilers with an efficiency of 90% on the market today. However, low cost is not the only unique feature of ATON Atmo 12.5E. It is also worth paying attention to the open combustion chamber and the maximum gas consumption of 1.39 m3 / h, which in total allows us to classify the model as a fairly economical solution. The device does not require a connection to the power supply, while its capacity is quite enough for efficient heating of rooms up to 94 m2. A classic set of protection systems is provided, including protection of the device in the event of a drop in gas pressure, overheating of the water in the circuit, extinction of the flame, etc.
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ATON Atmo 12.5E 12.5 kW
Energy source:gas
Mount:floor, single-circuit
Boiler power:12.5 kW, area ~ 94 m²
Combustion chamber:open, flue 110 mm

One of the most affordable single-circuit gas boilers with an efficiency of 90% on the market today. However, low cost is not the only unique feature of ATON Atmo 12.5E. It is also worth paying attention to the open combustion chamber and the maximum gas consumption of 1.39 m3 / h, which in total allows us to classify the model as a fairly economical solution. The device does not require a connection to the power supply, while its capacity is quite enough for efficient heating of rooms up to 94 m2. A classic set of protection systems is provided, including protection of the device in the event of a drop in gas pressure, overheating of the water in the circuit, extinction of the flame, etc.

All specifications
Specifications Atmo 12.5E
Main
Energy sourcegas
Installationfloor
Typesingle-circuit (heating only)
Heating area94 m²
Technical specs
Heat output12.5 kW
Power supplyautonomous (no electricity)
Coolant min. T50 °С
Coolant max. T90 °С
Heating circuit max. pressure1 bar
Consumer specs
Circulation pump
Boiler specs
Efficiency90 %
Combustion chamberopen (atmospheric)
Flue diameter110 mm
Inlet gas pressure12 mbar
Max. gas consumption1.39 m³/h
Connections
Gas supply1/2"
Central heating flow1 1/2"
Central heating return1 1/2"
Safety
Safety systemsgas pressure drop
water overheating
flame loss
draft control
More specs
Dimensions (HxWxD)746x384x610 mm
Weight50 kg
Added to E-CatalogAugust 2012
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.
Catalog ATON 2026 - new arrivals, bestsellers, and the most relevant models ATON.
It's hard to find a better deal for this money
29 February 2016 
We needed a simple and reliable boiler at a reasonable price. The choice on the market is good, but given the limited budget, we chose from domestic production.
Simple and reliable design. There is every chance that you will work happily ever after. And even if a problem occurs, there is a guarantee, and from a domestic manufacturer. It can be repaired quickly and you won’t have to wait for spare parts from abroad. High quality Polidoro burner. The burner is made of good stainless heat-resistant steel and does not require electricity to start. Piezo ignition in our conditions is an extremely useful thing. The boiler has good gas energy efficiency. This is, of course, not a condensing boiler, but still very good. Compact, takes up little space. Thanks to this, it was easy to find a corner for installation. Very quiet. Actually, there is nothing to make noise there, since there is no fan or circulation pump. Beautiful appearance. Anti-corrosion treatment of the body. Very good price. It’s difficult to decide to buy a European-made boiler if you know that something similar can be bought at several times cheaper.
If for some reason the boiler goes out, re-ignition can only be done manually. There was already a situation with a drop in pressure in the network and the valve was triggered.
use ATON Atmo 8E month or more
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