Mini Digital (DKEM). Intended for heating of premises up to 50 sq.m. or as an additional device in an existing heating system. The boiler is used only in systems with forced circulation of the coolant (the circulating pump, the expansion tank, the safety valve on 3 bars, the automatic air vent must be installed in system). Could work in both open and closed heating system. The maximum pressure in the system is 2.5 bar.
In addition, to protect the boiler from overheating, an emergency thermal switch is installed with the operating temperature of 95C. The coolant in the system is regulated smoothly in the range of 0-80 C. The model range consists of boilers with a capacity of 3 and 4.5 kW. Connection is possible only to the 220V network. It has two power levels (1 – 50 percent of power, 2 – full power), 3⁄4 connection (coolant reverse branch pipe – on the right side, supply branch pipe – on top). Relays (almost silent) are used as a communication device.
Digital (DKE). Intended for heating of premises up to 150 sq.m. or as an additional device in an existing heating system. The boiler is used only in systems with forced circulation of the coolant (the circulating pump, the expansion tank, the safety valve on 3 bars must be installed in system). Could work in both open and closed heating system. The maximum pressure in the system is 2.5 bar. The Digital series of boilers has a possibility of controlling the pump on/off before or after switching on the heaters, a two-stage protection system that prevents overheating, two temperature sensors (coolant and indoor air), protective modular contactor. There is also a terminal for connecting an external device, closed by a jumper (room thermostat, daily-weekly programmer, flow sensor). The coolant in the system is regulated smoothly in the range of 20-75 C. The model range consists of boilers with a capacity of 3 to 15 kW. Connection is possible both to a network of 220V (capacity from 3 to 7,5 kW), and 380V (capacity from 4,5 to 15 kW). Switching the 3, 4,5 and 6 kW capacity on 220B occurs on a board from the relay (almost silent), all others – on modular contactors. It has three power levels (button "Level 1" turns on 1 heater, button "Level 2" turns on 2 heaters, both buttons turn on three heaters), 3⁄4 connection (coolant reverse pipe – bottom, supply pipe – on top).
Digital Standard (SDKE). Used for heating premises from 30 to 150 sq.m. or as an additional device in an existing heating system. Models of this series stand out by high efficiency and reliability, being produced with capacity from 3 to 15 kW, and may be connected to a network of 220V and 380V (from 9 kW – only 380V).
Electric boilers of Standart Digital series have touch control, which allows adjusting the operation of the boiler more accurately. In addition, Standart Digital boilers are able control the on/off time of the built-in pump (from the European manufacturer) before and after turning on the heaters, as well as two temperature sensors (coolant and indoor air). At the same time, it is possible to choose an operating mode of a boiler via the display – on temperature of the coolant or on air temperature displayed with light indicators. This series is equipped with a high-quality (Italian production) hydraulic safety group: an automatic air extractor, a digital pressure sensor, a safety valve. Standart Digital boilers have additional electrical protection – a duplicating modular contactor. They could be operated only in a closed heating system with a pressure of at least 1 bar. Also, there is a terminal in the boiler control system for connecting an external device, closed by a jumper (a room thermostat, a daily-week programmer, a flow sensor). The coolant is smoothly regulated in the range of 0-80C, air – in the range of 1-40C. Boiler power switching takes place on solid-state relays with water cooling, due to which the boiler is absolutely silent. It has three power stages, 3⁄4 connection (coolant reverse pipe – bottom, supply pipe – on top).
Standart Digital+(SDKE+). Used for heating premises up to 360 sq.m. or as an additional device in an existing heating system. Models of this series stand out by high efficiency and reliability, being produced with a capacity from 3 to 36 kW, and may be connected to a network of 220V (capacity up to 7,5 kW) and 380V (from 4,5 to 36 kW). At the same time, boilers with a capacity of 3-9 kW are made with one block of heating elements, 12-36 kW ones – with two units of heating elements. Electric boilers of Standart Digital+ series have touch control, allowing adjusting the boiler more accurately. In addition, Standart Digital + boilers are able to control the on/off time of the built-in Grundfos pump (UPSO 15-60/130) before and after switching on the heaters; they have an expansion tank (Italian production) with a capacity of 7 liters, and two temperature sensors (coolant and air indoors). At the same time, it is possible to choose an operating mode of a boiler via the display – on temperature of the coolant or on air temperature displayed with light indicators. This series is equipped with a high-quality (Italian production) hydraulic safety group: an automatic air extractor, a digital pressure sensor, a safety valve. Standart Digital+ boilers have additional electrical protection – a duplicating modular contactor. They could be operated only in a closed heating system with a pressure of at least 1 bar. Also, there is a terminal in the boiler control system for connecting an external device, closed by a jumper (a room thermostat, a daily-week programmer, a flow sensor).
The coolant is smoothly regulated in the range of 0-80C, air – in the range of 1-40C. Boiler power switching takes place on solid-state relays with water cooling, due to which the boiler is absolutely silent. It has three power stages, 3⁄4 connection (coolant reverse pipe – bottom, supply pipe – on top).