Operation Manual - GB
GB
www.atmos.cz
GB - 5
1. Application
ATMOS D14P, D21P and D25P hot-water boilers are designed for convenient heating of family
houses, holiday homes and other buildings with pellets. For the heating you can use high-quality
wooden pellets with the diameter of 6 to 8 mm. The boiler is not intended for burning of wood,
sawdust and minor wood waste.
2. Technical description
The boilers are designed in such a way that in their left or right side an ATMOS A25 pellet burner
with a conveyor is installed that is attached to a boiler frame with an 18 x 32 mm sealing cord with the
use of screws. The boiler body is made as a weldment of steel sheets with the thickness of 3-6 mm.
It consists of a combustion chamber that is equipped in its top part with a three-tube exchanger with
inserted decelerators that increase efficiency. In the bottom part of the boiler there is a large ash pan.
The front part of the boiler is equipped in its top part with a cleaning door behind which a stainless-
steel screen ensuring high quality of fuel combustion with high efficiency is inserted. The boiler
body is insulated from the outside with mineral felt located under the sheet-metal covers of the outer
boiler jacket. In the top part of the boiler there is a panel with the main switch, the automatic deashing
switch (if installed), the switch of the pellet burner, an operation (control) thermostat, a pump thermo-
stat, a safety thermostat, a thermometer and a 6.3A fuse. In the bottom right part of the boiler there is
a blind flange for additional installation of automatic ash discharge. The boiler is not equipped with a
cooling loop against overheating as thanks to the small quantity of fuel in the burner there is no risk
of boiler overheating in case of a power supply failure.
Boiler with an ATMOS A25 burner, a 500 l fuel container and a 1.5 m conveyor.
