Installing UL
NOTICE!
Risk of damage due to incorrect use.
Do not use the UL non-return damper in external
walls or as an exhaust air or fresh air damper.
For external walls use only WG-KUL (with factory
mounted external weather louvre).
Fig. 4: Wall installation
UL1 Extract opening
UL2 Supply opening
Note the airflow direction (blade opening direction)
Installation opening
H
1
B
1
Without installation sub-
frame
H + 15
B + 15
With installation sub-
frame
H + 35
B + 35
Fix the damper with suitable screws (by others);
flange holes
≈∅
9 mm.
Installation
Non-return dampers Types UL, KUL, WG-KUL, ARK, ARK-1
5