TRENCH OUTPUTS

NOTE: Two columns of outputs are shown as some suppliers rely on the old BS3528 test results. The most up to date testing is BS EN442 which shows lower outputs due to a change in test procedure.

  OUTPUT* OUTPUT*  
ELEMENT BASED ON BASED ON TUBE 
TYPE TESTING TESTING DIAMETERS
  TO BS3528 (W) TO BS EN442 (W)  
D 212 175 15
DD/S 425 350 15
F 322 252 15/22
J 322 252 15/22
JJ LOW 495 410 15/22
N 480 385 15/22/28
AF 570 540 15/22
W 645 530 22/28
FF 645 580 15/22
JJ 645 600 15/22
AN 730 625 15/22
FN 820 720 15/22
NN 960 800 15/22/28
WW 1290 1060 22/28

In areas where more output is required, a fan assisted unit may be required.

* Outputs in Watts per metre of active element at 60 delta T and 0.31 kg/s mass flow rate.

 

 

Trench Heating

 

Trench Radiant

E & O E