Appendix C: Return Air Damper Assembly Kit
C.1 Box Content
The H2 Zero Return Air Damper box contains:
Return Air Damper Assembly Kit (P/N 016-556-10).
Unistrut Mounting Kit (P/N 016-555-10).
8” Diameter Galvanized Steel Collar (643-506-10).
C.2 Installation
Before installing the H2 Zero Return Air Damper, you need to plan where you will place the unit.
If possible, to simplify ductwork, it is recommended that this be an outside wall such that a straight 8”
diameter duct can be installed.
The wall must have sucient strength to support 30 lbs.
Clearance around the unit should be 18” on all sides except the mounting surface.
C.3 Return Air Damper Assembly and Installation
The Return Air Damper Assembly Kit was shipped in a separate box to protect it during shipping.
C.4 Mounting
IMPORTANT: The wall and anchor system must be capable of supporting 30 lbs.!
Step 1. Attach the two pieces of unistrut to wall such that the unistrut runs vertically, and the centers are
27” apart.
Step 2. Using the six U-nuts, 3/8-16 screws, fender washers, and split lock washers provided, mount
the Return Air Damper Assembly to the unistrut.
See “Figure 1. Wall mount illustration with unistrut” on Page 2
PAGE 1 H2 ZERO: VRLA BATTERY ROOM HYDROGEN VENTILATION SYSTEM
INSTALLATION & OPERATIONAL MANUAL
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