Neptune R450 MC, Installation And Maintenance Manual

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R450 Mini Collector Installation and Maintenance Guide 69
Appendix B: R450 MC Stand
Using the R450 MC Stand
Ballast Requirements vs. Wind Speed
The tables in this appendix demonstrate the requirements for a proper ballast for the
R450 Mini Collector (R450 MC) stand.
Ballast requirements are listed for the “Rohn Industries Stand – Part # JRM23855” on
page 70. Be sure to evenly distribute the ballast to secure the stand in its position as illus-
trated in Figure 77.
Ballast Considerations
If the stand you are installing is in a rooftop location, Neptune recommends using a ballast
to secure the stand against high winds. Refer to the following section for ballast recom-
mendations.
Applying the Ballast to the Stand
After the R450 MC is wired, the next stage is to secure the entire unit in its
location by applying the ballast.
To apply the ballast to the stand, complete the following steps.
1 Refer to Table 15 on page 70 to determine the adequate amount of
ballast for your installation.
2 Evenly distribute the ballast to secure the stand in its position as
illustrated in Figure 77.
For AC-powered systems, only eight (8) concrete blocks are required.
Install a rubber pad beneath the stand to protect the roof surface.
•
For Rohn stand, use Rohn P/N: JRMPAD
• For Valmont stand, use Valmont P/N: B1564
Figure 77 Stand with Concrete
Block Ballast