Daktronics AF-3090-89-R,A - Manual (Page 14)

Mechanical Installation
2-3
The installer is responsible to ensure the installation will adequately meet local codes and
standards. The installer is also responsible for the mounting method and hardware.
Before beginning the installation process, verify the following items.
• The mounting structure will provide a straight and square frame for the sign. Height variation in
any four-foot horizontal section may not exceed ¼- inch.
• The mounting structure will not give way at any unsupported points after the sign is mounted.
The back of the sign uses 3x2x 3 /
8
″
steel clip angles at the locations shown in Drawings B-160986, B -
160987, B -160988 and B-160989. These angles assist in mounting the sign. Remember to have all
mounted signs inspected by a qualified structural engineer.
The customer must have a qualified structural engineer review the number of attachment points
needed and the wall structure to ensure both meet all national and local codes. Daktronics
recommends using all clip angles as attachment points.
1. Carefully uncrate the sign. Look each side of the sign over for damage during shipping.
2. Following the guidelines described in Section 2.4, lift the sign into position on the support
structure using all provided eyebolts.
3. Weld or use ½
O Grade-5 bolts and hardware to secure the clip angles to the support structure as
shown in Top View in Drawings B-160986, B -160987, B -160988 and B-160989.
4. Refer to Section 3 for information on routing power and signal.
5. Upon completing the installation, carefully inspect the sign for any holes that may allow
water to seep into the sign. Seal any openings with silicone. If you remove the eyebolts on the
top of the sign, plug the holes with bolts and the rubber sealing washers that you removed
with the eyebolts. Silicone the threads on the bolts.
2.6 Optional Temperature Sensor Mounting
The Temperature Sensor mounts separately
and requires a location away from the
influence of chimneys, air conditioners, vents,
tar roofs, concrete, and parking lots, which can
cause abnormal temperature fluctuations.
Usually, a separation of at least 20-30 feet
horizontally and 8 feet vertically is required to
achieve this. Locations where air movement is
restricted are also unsatisfactory. Refer to
Drawing A-79767.
The ideal sensor location is a north eaves or a
northern exposure, above grass and away from
direct sunlight. This location gives extra
stability and accuracy to the sensor because of
the added shading usually obtained on a
northern exposure. See Figure 7 for details.
The second choice for locating a temperature sensor is on the display itself, or somewhere on the
display structure. A light-colored display is preferred in this application. Location of the sensor should
be above, below, or on a northern edge of the display to keep the sensor shaded. If mounting above the
Temp Sensor Housing
(Supplied by Daktronics)
Conduit Outlet Body
(Supplied by Daktronics)
1/2” Conduit
(Supplied by Customer)
1.0’
Figure 7: Temperature Sensor Eave/Wall Mount