A new generation of gas-fired boilers

The boiler intended for combustion of gas: 2E, 2H, 2Lw, 2Ls, 3B/P, 3P

DCG COMFORT 25 boiler is available in heat-only (1F) and combination (2F) versions.

Adhering to high production standards and using the highest quality components we provide a warranty for up to five (5) years.

Discover advantages of our product:

wide range of power modulation up to 2.5 kW,
An energy efficiency class,
the components used, such as gas valve, fan, controller from renowned manufacturer EBM PAPST,
option to combust several types of gas by adjustment of fan revolutions without needing to replace the gas nozzles,
boiler’s heat exchanger made of stainless steel,
burner featuring an innovative BLU JET combustion process,
built-in 3d brass change-over valve,
built-in Wilo circulating pump
built-in 10L diaphragm vessel,
protections system ensuring the safety of operation,
Anti Back Flow system allows connecting several boilers to one shaft,
the solutions used to improve the comfort of operation such as: drip tray, condensate drainage system, damping mat, by-pass protecting the pump against damage,
Functions implemented by the controller: central heating mode, dhw heating mode (dhw sensor as a standard), dhw priority, function of dhw pre-heating, weather-responsive control, OpenTherm communication, possibility to control via the internet, clear display,

Technical drawings

Parameter	unit of measure	value
Boiler power	kW	2,5 - 24
Maximum boiler efficiency (50/30°C)	%	107,4
Maximum operating temperature for central heating	°C	80
Range of central heating temperature adjustment	°C	30 - 80
Range of dhw temperature adjustment	°C	30 - 65
Dhw efficiency for continuous operation (ΔT=30°C) 1	l / min	11
Weight of empty / filled boiler	kg	35,5 / 38
Supply	V / Hz	230 / 50
Rated electric power	W	100
Electric protection rating	-	IPX4D
Seasonal efficiency for space heating	-	A
Boiler sound level	dB	48
Capacity of diaphragm vessel	l	10

¹2 F - combination boiler

The boiler is adapted for connection with (co-axial) direct vent pipe or with separate ducts using appropriate couplings.

A gas boiler can be installed in one of the following configurations

Air intake for combustion from the room:

B23 - flue gas outlet connected to the smoke flue, the air is drawn from the room using separate duct connected to the boiler.
B33 - flue gas outlet connected to the smoke flue with coaxial duct, whose air duct draws the air from the room.

Air intake from outside:

C43 - boiler connection using one co-axial direct vent pipe to a co-axial direct vent system
C53 - furnace connection with a separate flue pipe to the smoke flue, combustion air is supplied by a separate vertical air duct from outside.
C63 - flue gas exhaust with a vertical duct through the wall to outside of the building. Air intake by vertical air duct through the wall of the building (to 20 kW) or from a flue with a co-axial direct vent system.
C13 - flue gas discharge and air intake through the wall of the building (only for boilers of power up to 20 kW). Implemented by two separated pipes or one co-axial pipe.
C33 - connection to the co-axial direct vent pipe.

Controller

AeModul application

The eModul application is an ideal solution for people living intensively, who often work during different hours and do not have time for household chores. It has been known for some time that edition of parameters the heating equipment operation depending on your activities has a significant influence on the decrease of the heating bills. Using this application you may perform the same operations both at home and in the office and all that is being done to achieve maximum comfort and efficiency of operation with the lowest possible energy consumption. Using the schedules of equipment operation you may change the temperature during the day in various periods using your laptop, tablet or smartphone from anywhere in the world. Using the eModul application you may decrease the temperature if you forgot to do this before leaving to work or going on holiday.

Boiler controller

Functions:

central heating mode
dhw heating/summer mode
dhw priority
the function of dhw pre-heating for combination boiler
weather-responsive control
local control
OpenTherm communication
possibility to control via the internet
clear display
intuitive operation

Controllers for the system

i-2 Plus

Functions:

control of two mixing valves,
control of DHW pump,
option to control parameters of the heating equipment thanks to OpenTherm + communication in 4.0 version,
weather compensated control and weekly control,
two configurable voltage-free outputs,
two configurable voltage outputs,
cooperation with two two-state room controllers,
cooperation with room controller with RS transmission,
option to connect ST-505 or WIFI module,
possibility of a software update via the USB port.

i-3 Plus

Functions:

control of three mixing valves,
control of DHW pump,
two configurable outputs 0-10V,
option to control parameters of the heating equipment thanks to OpenTherm + communication in 4.0 version,
weather compensated control and weekly control,
two configurable voltage-free outputs,
two configurable voltage outputs,
cooperation with three two-state room controllers,
cooperation with room controller with RS transmission,
option to connect ST-505 or WIFI module,
possibility of a software update via the USB port.

Wifi-OT

Functions:

smart maintaining of room temperature
control of the set temperature of central heating boiler
control of DHW temperature
change of set boiler temperature based on the outdoor temperature
weather compensated control
burner power modulation
preview of outdoor temperature
a weekly programme for room heating and boiler
option of two-state control
WiFi module built-in - option of remote control via eModule application
the controller operates in the OpenTherm + in version 4.0

ST-292 v3

Functions:

two-state regulator,
room temperature control,
weekly heating plan,
day/night programme,
manual programme,
OptimumStart function - selection of optimum time for boiler start-up to achieve thermal comfort to heat the room to the set temperature for a previously set time,
heating/cooling function,
momentary display backlight,
built-in room sensor.

ST-292 v2

Functions:

two-state regulator;
wireless communication;
room temperature control;
weekly heating plan;
day/night programme;
manual programme;
OptimumStart function - selection of optimum time for boiler start-up to achieve thermal comfort to heat the room to the set temperature for a previously set time;
heating/cooling function;
momentary display backlight;
built-in room sensor;
wireless external sensor (additional option);
floor temperature sensor (additional option);