19-2021 Rev E, 06/05/07 6 2. Determine the number and configuration of Lamp Modules and Power Junction Modules.
Note: the maximum number of Lamp Modules (19-1000) to be installed per Power
Junction Module (19-1020) is 24.
3. Mark the location of the lower mounting bracket on the lower mounting surface of the
installation area.
4. Measure overall length/height required for the installation (Figure 2a, dimension ‘A’).
This dimension is the distance from the lower mounting surface to the upper
mounting surface of the mounting location. Record the measurement in the table in
Figure 2a. for Dimension A.
5. Referencing Dimension A, deduct ½” from the overall distance from the lower to
upper mounting surface and record as Dimension B. This is the overall length of the
Main Support.
6. Install the lower bracket to the lower mounting surface of the installation area in the
previously marked location. Four sheet metal screws (provided) should be used to
securely fasten the lower bracket to the lower mounting surface (see Figure 2a).
7. Place the Main Support on a horizontal surface in an appropriate work area.
Measure and mark off the Dimension B onto the Main Support (see Figure 2b).
Then make one cut through the cross-section of the Main Support using a tool
appropriate for cutting aluminum. Cut only from one end, as it is important to retain a
wiring feed-through hole in the Main Support section to be installed.
Figure 2b
INSTALLATION OF THE LAMP MODULES
1. Carry the Main Support into the installation area. Place the upper mounting bracket
onto the top end of the Main Support. Do not install screws in the upper
mounting bracket at this time.
2. Place the lower end of the Main Support into the lower mounting bracket, which is
secured to the lower mounting surface.
3. Swing the Main Support into place so that it is vertical.
4. When vertical, use the supplied hardware to anchor the upper mounting bracket into
the duct ceiling.
5. First mark the location where the Power Junction Module is to be attached. It is
important to mount the Power Junction Module near, but not covering, the wire feed
through hole in the Main Support. It is recommended that the Power Junction
Module be attached to the upper end of the Main Support.
6. Mark the Main Support locations where the Lamp Modules should be attached.
Note: the maximum number of Lamp Modules (19-1000) to be installed per
Power Junction Module (19-1020) is 24.
7. Once the desired locations for the Lamp Modules and Power Junction Modules have
been identified, disassemble the upper mounting bracket from the upper mounting
surface and return the Main Support to the work area.