Siemens OpenAir GBB161.1U Technical Instructions page 5

GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control
Accessories,
Continued
Siemens Industry, Inc.
Figure 5. Tandem Mounting Bracket.
Figure 6. Special Shaft Adapter.
Figure 7. NEMA 3R Weather Shield.
Figure 8. NEMA Type 4X Weather Shield.
Document Number 155-176P25
ASK73.1U: Provides an extended anti-
rotation pin that allows two modulating GIB
actuators to directly drive a single damper
shaft. For any combination of GIB161x
and GIB166x actuators.
Bracket must be ordered for tandem
installation.
ASK74.1U: Shaft adapter attaches to a
1.05-inch (26.6 mm) diameter shaft;
whereas, the standard self-centering
adapter accepts up to a 1.00-inch (25 mm)
diameter shaft. This special adapter can be
used for coupling to 1-inch jackshafts that
are slightly oversized.
Shaft adapter is 13/16-inches (20 mm)
shorter than the height of the self-centering
shaft adapter.
985-052P20: Small shaft insert (package of
20) when using the GIB actuator on a
damper shaft less than 3/4-inch (20 mm)
diameter.
ASK75.1U: GBB and GIB Actuators are
UL listed to meet NEMA 3R requirements
(a degree of protection against rain,
sleet, snow and damage from external
ice formation) when installed with
ASK75.1U Weather Shield and outdoor-
rated conduit fittings in the vertical
position.
For dimensions, see Figure 28.
ASK75.7U: GBB and GIB Actuators are
UL listed to meet NEMA Type 4X
requirements (a degree of protection
against falling dirt, rain, sleet, snow,
windblown dust, splashing water, hose-
directed water, corrosion, and damage
from external ice formation) when
installed with an ASK75.7U Weather
Shield and outdoor-rated conduit fittings.
This weather shield may be mounted in
any orientation.
For dimensions, see Figure 29.
Technical Instructions
June 22, 2015
Page 5