The KHT domestic hot water (DHW) boiler with 2 heat exchangers is an innovative device that combines advanced technology and top-quality craftsmanship. Designed with the aim of ensuring maximum user comfort, this model is the perfect solution for both single-family homes and smaller businesses. It is made of black steel, phosphated and coated with high-quality ceramic enamel, which is perfectly suited for use in drinking water tanks. The tanks are equipped with an inspection hole in the flange with a diameter of 120 mm. The heat exchangers are made of black steel and coated with ceramic enamel.

Main Features:

Performance and Efficiency:

Capacity: Our boiler is available in various capacity options, allowing it to be tailored to the user's individual needs.
Heat Exchanger: Equipped with two heat exchangers, the boiler ensures fast and even heating of domestic hot water.
Insulation: High-quality thermal insulation minimizes heat loss, resulting in energy savings and lower operating costs.

The KHT DHW boiler with 2 heat exchangers is an ideal solution for use in:

Single-family homes
Apartments
Small businesses
Recreational facilities

Why choose the KHT boiler?

Innovation and reliability: Thanks to the use of modern technology and high-quality materials, the KHT boiler guarantees years of trouble-free operation.
Comfort of use: Quick water heating makes the boiler extremely convenient to use.
Savings: High energy efficiency and the possibility of integration with eco-friendly energy sources contribute to significant savings.

Technical Data:

Technical Data	Unit	Nominal Capacity
Technical Data	Unit	BT-11 200	BT-11 300	BT-11 400	BT-11 500
Cold water inlet h1	["/mm]	1 / 80	1 / 91	1 / 91	1 / 101
Circulation connection h2	["/mm]	3/4 / 830	3/4 / 841	3/4 / 1276	3/4 / 1286
DHW outlet h3	["/mm]	1 / 1065	1 / 1076	1 / 1581	1 / 1591
Return from lower coil h4	["/mm]	1 / 235	1 / 246	1 / 266	1 / 276
Supply to lower coil h5	["/mm]	1 / 605	1 / 616	1 / 851	1 / 861
Return from upper coil h6	["/mm]	1 / 705	1 / 716	1 / 976	1 / 986
Supply to upper coil h7	["/mm]	1 / 915	1 / 926	1 / 1376	1 / 1386
Sensor sleeve h9	[mm]	768	779	1176	1186
Sensor sleeve h10	[mm]	420	431	656	666
Electric heater connection h11	[mm]	6/4 / 655	6/4 / 666	6/4 / 913	6/4 / 923
Electric heater connection h12	[mm]	6/4 / 280	6/4 / 291	6/4 / 311	6/4 / 321
Inspection flange TU1 h12	[mm]	DN 120
Thermometer sleeve h13	[mm]	925	936	1406	1416
Lower heat exchanger capacity	[L]	6	7.6	13.9	13.9
Lower heat exchanger surface	[m²]	0.9	1.2	1.6	1.6
Lower heat exchanger power (70/10/45°C)	[kW]	21	28	37	37
Constant output of lower heat exchanger	[l/h]	500	700	900	900
Upper heat exchanger capacity	[L]	3.8	3.8	7.6	7.6
Upper heat exchanger surface	[m²]	0.6	0.6	1.2	1.2
Upper heat exchanger power (70/10/45°C)	[kW]	14	14	28	28
Constant output of upper heat exchanger	[l/h]	350	350	700	700
Heat exchanger operating pressure	[MPa]	1
Max. tank operating pressure	[MPa]	0.6
Height H	[mm]	1166	1196	1687	1679
Diameter without insulation d / with insulation D	[mm]	502/603	603/704	603/704	652/753
Total capacity	[L]	183	267	408	479
Nominal capacity V	[L]	171	253	382	453
Magnesium anode	[IG/mm]	6/4 / 33x400	6/4 / 33x500	6/4 / 33x650	6/4 / 33x750
Magnesium anode weight	[kg]	0.9	0.9	1.3	1.3
Main/additional magnesium anode length	[mm]	400/400	400/400	650/400	650/400
Internal boiler surface	[m²]	3.3	4.05	5.97	6.28
Weight	[kg]	72	87	120	128
Tilt diagonal R	[mm]	1313	1388	1828	1841
Heater length	[mm]	540	580	580	620
Energy efficiency class	[-]	B	B	B	B