37
I20683 - Subject to change.
TNF
Installation Instructions
Mechanical Installation
Rotation Limitation
The angle of rotation limiter, ZDB-AF2, is used in conjunction
with the tab on the universal clamp or IND-AF2 position
indicator which comes with the ZDB-AF2. In order to function
properly, the clamp or indicator must be mounted correctly.
See Fig. A.
The ZDB-AF2 may not work in certain mounting orientations
using the ZG-106 or ZG-107 mounting brackets. It will not work
with the ZG-108 mounting bracket. Limiting the damper rotation
must be accomplished by adjusting the crank arm linkage.
The ZDB-AF2 may be used to control the rotational output of
the TNF series actuator where a damper has a designed rota-
tion less than 90°. An example would be a 45° or 60° rotating
damper.
Damper Rotation Limiting
1. Determine the amount of damper rotation required.
2. Locate the Angle of Rotation Limiter (ZDB-AF2) on the
actuator so that its edge lines up with the degree grad-
uation on the actuator face which corresponds with the
required rotation. See Figure. C.
3. Find the appropriate cross-hair location through the slot
of the limiter. This is the screw mounting location.
4. Pierce through the label material to allow easy
fastening of the retaining screw.
5. Position the limiter back to the desired position, making
sure the locating “teeth” on the limiter are engaged into
the locating holes on the actuator.
6. Fasten the limiter to the actuator using the self tapping
screw provided.
7. Test the damper rotation before applying power and if
required, a control signal. Re-adjust if necessary.
Auxiliary Switches
The TNF series actuators may be ordered with one built-in
SPDT auxiliary switch used for safety interfacing or signalling,
for example, for fan start-up. The switch position is adjustable
between 5° and 85° of rotation. The crank, supplied with the
actuator, or a 3mm allen wrench is used to adjust the
switching position. See Figure. D.
1
The actuator must be in its fail-safe position.
2. Insert the crank into the hexagon shaped hole located in
the center of the adjustable switch pointer.
3. Rotate the crank until the switch pointer is at the desired
switch point in degrees as shown.
20
30
40
Screw secured at
these cross hairs
20
30
40
Secure angle-of-
rotation limiter
Screw
Philips screwdriver
20
30
40
Angle of rotation
is now set at 40
°
.
Figure C ZDB-AF2 Securing the Angle of Rotation Limiter
Factory setting 5
ϒ
Rotate with
crank handle
45
ϒ
set
5…85
ϒ
10 20
30
40
50
60
70
80
5…85
ϒ
10 20
30
40
50
60
70
80
5…85
ϒ
10 20
30
40
50
60
70
80
Cran
k Handl
e
Figure D
Summary of Contents for TRANE TAF Series
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