
Trench heaters - PK
Licon PK convectors are intended for embedding in floors, especially in places prohibiting installation of higher radiators, e.g. in front of french windows, winter garden entries, hall entrances, exits etc., in public buildings (shops, administrative buildings etc.), as well as in residential houses. Various colored designs of the floor grids are making convectors suitable for any interior.
• Natural convection convectors
• Wide type and design range
• Easy to clean and maintain
• The floor convectors are intended for dry environment
• For humid environment use version InPool
Version Basic* | zinc galvanised steel case, exchanger without any surface finish, no frame. Atention – intended for dry environment |
Version Economic | basic version in black coated galvanized steel case, exchanger without surface finishes |
Version Exclusive | black coated galvanized steel case, black coated exchanger |
Version Inox | case made of stainless steel AISI 304, unpainted exchanger (only for dry environment) |
Version InPool | case made of stainless steel AISI 316, unpainted exchanger (for humid environment) |
Depth (mm) | 90, 110, 150, 190, 300, 450 |
Width (mm) | 160, 200, 280, 340, 420 |
Length (mm) | 800 up to 3 000 (at 200 mm steps) |
Heat output (W) | from 87 to 4 100 |
Max. working pressure (bar) | 12 |
Max. working temperature | 110°C |
Connecting thread | inner G 1/2" |
Grids | Design grids for trench heaters |
Design finishes | Trench heaters - Design finishes |
Basic* – manufactured in depths of 9 and 11 cm, in widths of 16, 20, 28, 34 and 42 cm and in lengths from 80 cm to 3 m. The Basic version of the floor convector can be combined to any floor grid.
Heat outputs (W) at t1/t2/ti = at 75/65/20 °C (Δt=50) and 65/55/20 °C (Δt=40) / EN 442 temperature exponent m=1,3
Depth (cm) | Length L (cm) | ||||||||||||
Δt | 80 | 100 | 120 | 140 | 160 | 180 | 200 | 220 | 240 | 260 | 280 | 300 |
Width 16 | 9 | Δt 50 | 87 | 121 | 156 | 191 | 226 | 260 | 295 | 330 | 364 | 399 | 434 | 469 |
11 | Δt 50 | 100 | 140 | 180 | 220 | 260 | 300 | 340 | 380 | 420 | 460 | 500 | 540 |
Width 20 | 9 | Δt 50 | 110 | 154 | 197 | 241 | 285 | 329 | 373 | 417 | 461 | 505 | 549 | 592 |
11 | Δt 50 | 127 | 178 | 229 | 280 | 330 | 381 | 432 | 483 | 534 | 584 | 635 | 686 |
Width 28 | 9 | Δt 50 | 161 | 226 | 290 | 355 | 419 | 484 | 548 | 612 | 677 | 741 | 806 | 870 |
11 | Δt 50 | 174 | 244 | 313 | 383 | 453 | 522 | 592 | 662 | 731 | 801 | 871 | 940 | |
15 | Δt 50 | 245 | 344 | 442 | 540 | 638 | 736 | 834 | 932 | 1031 | 1129 | 1227 | 1325 | |
19 | Δt 50 | 267 | 374 | 480 | 587 | 694 | 801 | 908 | 1014 | 1121 | 1228 | 1335 | 1441 | |
30 | Δt 50 | 313 | 439 | 564 | 690 | 815 | 940 | 1066 | 1191 | 1317 | 1442 | 1567 | 1693 | |
45 | Δt 50 | 483 | 676 | 870 | 1063 | 1256 | 1449 | 1642 | 1836 | 2029 | 2222 | 2415 | 2609 |
Width 34 | 9 | Δt 50 | 226 | 316 | 406 | 497 | 587 | 677 | 768 | 858 | 948 | 1039 | 1129 | 1219 |
11 | Δt 50 | 242 | 339 | 436 | 533 | 630 | 727 | 824 | 921 | 1018 | 1115 | 1212 | 1308 | |
15 | Δt 50 | 315 | 440 | 566 | 692 | 818 | 944 | 1070 | 1196 | 1321 | 1447 | 1573 | 1699 | |
19 | Δt 50 | 360 | 503 | 647 | 791 | 935 | 1079 | 1223 | 1367 | 1510 | 1654 | 1798 | 1942 |
Width 42 | 9 | Δt 50 | 318 | 445 | 573 | 700 | 827 | 954 | 1081 | 1209 | 1336 | 1463 | 1590 | 1718 |
11 | Δt 50 | 337 | 472 | 606 | 741 | 876 | 1011 | 1146 | 1280 | 1415 | 1550 | 1685 | 1819 | |
15 | Δt 50 | 433 | 606 | 779 | 952 | 1125 | 1298 | 1471 | 1644 | 1817 | 1990 | 2163 | 2337 | |
19 | Δt 50 | 471 | 660 | 848 | 1037 | 1225 | 1413 | 1602 | 1790 | 1979 | 2167 | 2356 | 2544 | |
30 | Δt 50 | 546 | 765 | 983 | 1202 | 1420 | 1638 | 1857 | 2075 | 2294 | 2512 | 2731 | 2949 | |
45 | Δt 50 | 759 | 1063 | 1367 | 1670 | 1974 | 2278 | 2581 | 2885 | 3189 | 3492 | 3796 | 4100 |
Correction factor kt for a variant temperature difference Δt (K)
Δt(K) | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 |
kt | 0,265 | 0,284 | 0,304 | 0,324 | 0,344 | 0,364 | 0,385 | 0,406 | 0,427 | 0,449 | 0,471 | 0,493 | 0,515 | 0,537 | 0,560 | 0,583 |
Δt(K) | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 |
kt | 0,606 | 0,629 | 0,652 | 0,676 | 0,700 | 0,724 | 0,748 | 0,773 | 0,797 | 0,822 | 0,847 | 0,872 | 0,897 | 0,923 | 0,948 | 0,974 |
Δt(K) | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | |||||
kt | 1,000 | 1,026 | 1,052 | 1,079 | 1,105 | 1,132 | 1,159 | 1,186 | 1,213 | 1,240 | 1,267 |
Optional versionBasic - zinc galvanised steel case, exchanger without any surface finish, no frame. | Standard delivery containsversion Economic – black coated zinc galvanised steel case
Optional specification
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Aluminium frame profiles
Standard design – U frameStandard PK design contains silver U profile. Profile colour is equal with grid colour, for other colours. | Selectable version – F frameWhen the selectable frame F is ordered, it is attached separately to convector (not installed on convector). Frame colours are identical with aluminium grid colours. |
Pertl - Version Basic – without frameFloor convector finish with no frame fitting option (U and F). |
Convectors installation
Connecting the floor convectors Licon PK
Cases' types according to water inlets' location and lowering of faces for batch assembly.
Lowering of the cases' faces is used where it is not desirable to see the connections between the convectors (long rows of convectors, i.e. administative buildings, hotels etc.). When ordering the walkable grid it is necessary to mention that it is the PM, which will be used for the convector with the lowered face.
Note: The PKB convectors' individual cases cannot be mutually interconnected. These are made only in P0 design.
Building recommendation Several general principles must be fulfilled for proper function of the convector.
- To interconnect the exchanger and the distributing pipeline, the standard stainless-steel hoses with stainless-steel jacketing must be used (unless recommended otherwise) which always form a part of the delivery. In practice they provide a better access under the heat exchanger without having to dismantle the heating system, e.g. during cleaning.
- A correctly installed convector is mounted horizontally and the top edges of the convector case are not warped or deflected to ensure proper functioning of the walk-on grid and allows venting of the heat exchanger.
- Correctly installed convector's decorative frame at the floor covering is within the margin of + 2 mm.
- We recommend to keep the cover board in its place for the full duration of the building work to prevent dirt getting inside the convector. The standard board supplied is not walkable. A higher load bearing capacity board can be ordered.
- The height adjustment screws are only used for horizontal levelling of the convector case.
- During concreting the convector must be fixed to the floor with the use of fixing anchors screws that will prevent vertical shifting of the convector during subsequent pouring of concrete. The convector can be vertically loaded during concrete pouring. During concreting the convector must be strutted to prevent deformation of the case. When using other casting material (e.g. anhydride) seal thoroughly all passages into the convector to prevent it from flooding.
- Convectors with stainless steel case, designed for humid environments and identified as PKB have a standard built-in water drainage. It must be interconnected during the installation with a pipe with secured slope to drain the waste water. We recommend to fit the drain with the odour trap.
- For further versions for PK built-in (Possibility to imbed in floors according to floor types).
Heat exchanger placement
Standard design | PKB pool version (InPool) |
The specified dimensions do not include the decorative frame | Suitable for interiors with increased humidity, must be fitted with Al grid |
Weights and water volumes of floor convectors
steel type | 9/16 | 9/20 | 9/28 | 9/34 | 9/42 | 11/16 | 11/20 | 11/28 | 11/34 | 11/42 | 15/28 | 15/34 | 15/42 | 19/28 | 19/34 | 19/42 | 30/28 | 30/42 | 45/28 | 45/42 |
kg/linear meter | 4,1 | 5,12 | 5,96 | 7,24 | 8,47 | 4,43 | 5,54 | 6,4 | 7,7 | 9 | 8,59 | 10,53 | 12 | 9,47 | 11,5 | 12,96 | 13,9 | 18,45 | 17,7 | 22,3 |
stainless steel kg/linear meter | - | 5,07 | 5,94 | 7,24 | 8,5 | - | 5,47 | 6,36 | 7,7 | 9 | - | - | - | - | - | - | - | - | - | - |
l/linear meter | 0,18 | 0,4 | 0,4 | 0,6 | 0,8 | 0,18 | 0,4 | 0,4 | 0,6 | 0,8 | 0,8 | 1,2 | 1,6 | 0,8 | 1,2 | 1,6 | 0,8 | 1,2 | 0,8 | 1,2 |
Assembly instruction PK
Assembly instruction PKB
Assembly instruction PM
Enquiry form for production of specific convector, floor grid
Note: please download the form and save it to your computer to some file or desktop, then fill in the saved form.
Contact form
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