Radiator Type K

The K type steel ladder radiator is the most popular type of radiator being manufactured for over 25 years. This classic model series made of the finest carbon steel is also available in an ECO variant with a smaller number of horizontal tubes. The minimalist design and proven quality of the original Thermal Trend product makes K-type one of the best-selling models on the market.

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Heat output Q [W] for the water heat carrier according to DIN EN 442

Type	Height H	Width W	Connecting pitch	t₁/t₂[°C]	Q[W] t_j [20 °C]	Temperature exponent n	Water capacity	Recommended input for combined heating [W]
Type	Height H	Width W	Connecting pitch	t₁/t₂[°C]		Temperature exponent n	Water capacity	Recommended input for combined heating [W]
K 450 / 720	720	450	420	90/70	417	13 222	2,6	200
K 600 / 720	720	600	570	90/70	538	13 114	3,25	300
K 750 / 720	720	750	720	90/70	655	13 005	3,9	300
K 450 / 960	960	450	420	90/70	526	13 106	3,37	300
K 600 / 960	960	600	570	90/70	679	13 042	4,18	300
K 750 / 960	960	750	720	90/70	828	12 977	4,98	400
K 450 / 1320	1320	450	420	90/70	713	12 922	4,6	400
K 600 / 1320	1320	600	570	90/70	922	12 927	5,65	500
K 750 / 1320	1320	750	720	90/70	1125	12 932	6,7	600
K 450 / 1680	1680	450	420	90/70	926	12 917	5,8	500
K 600 / 1680	1680	600	570	90/70	1200	13 064	7,05	600
K 750 / 1680	1680	750	720	90/70	1468	1 321	8,3	700
K 450 / 1840	1840	450	420	90/70	1062	13 027	6,8	500
K 600 / 1840	1840	600	570	90/70	1370	12 923	8,25	700
K 750 / 1840	1840	750	720	90/70	1669	12 819	9,7	900

Power output conversion coefficients for different types of connections:

One side connection – see the tab for fx = 1
Diagonal connection – see the tab for fx = 1,011
Down to up connection – see the tab for fx = 0,959
Central connection from the bottom (50 mm) fx = 0,89

Types of connection