U Fit left and right cover plates to
insulation on stoker duct
Installing the burn back flap drive (only with burn back flap)
Back-fire flap drive must be pre-
tensioned by 5°.
(delivery configuration)
À See included manufacturer’s
documentation for how to pre-
tension the drive
U Insert clamping piece as illustrated
(90° position) and secure at back
with fixing clamp
U Attach drive to shaft of burn back
flap
U Tighten clamping piece so that the
clamp and triangular shafts fit
positively
U Turn the whole unit 90° anti-
clockwise
´ The burn back flap is closed