HELIOTHERME 4000® Axial air heaters Assembly accessories A different assembly for each use. RETURN AIR MODULE Size A B C Codes 4300 395 7417083 4350 440 7185105 Filter box (G1 filter in accordance with EN 779) 4400 520 7185106 Prevents premature clogging of exchanger coils 220 Not ductable 4450 600 7185107 4500 680 7185108 4630 840 7185110 DIFFUSION MODULE Size A B C Codes 4300 750 655 300 7417084 4350 750 700 300 7185133 Diffuser on door 4400 7185134 Create an air curtain that limits energy loss when doors are 850 750 325 opened. 4450 970 850 350 7185135 Warning: Use a system that is suited to the diffuser mounting. 4500 1100 970 375 7185136 4630 1250 1170 400 7185137 Size A B C Codes 4300 _ _ _ _ 4350 _ _ _ _ 4400 7185138 Diffuser for large spaces 178 555 522 Reduction cone for increasing the air throws. 4450 136 637 618 7185139 4500 132 740 714 7185140 4630 282 872 814 7185141 ASSEMBLY SUPPORT ACCESSORIES Size Codes Wall bracket All 7181226 300 to 450 7181228 Additional kit for fastening on an IPN 500 to 630 7181230 Size Codes Suspension support for ceiling mounting All 7282116 190 190 CATALOGUE 2021