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”...
FAULT IN GRND PWR + PWR - Jumper J3 is used to connect between H2 Zero Main Controller using the 8p position connector. See “Figure 2. Scheme 2 Wiring Diagram” on page 4 PAGE 2 H2 ZERO: VRLA BATTERY ROOM HYDROGEN VENTILATION SYSTEM...
PIN 1 POS (+) NEG (-) POS (+) NEG (-) Jumper J4 and J5 (auxiliary power inputs) is necessary when connecting between H2 Zero Main Controller using the minor alarm dry contact. FORM C PINOUT (J6) PIN 2 PIN 1...
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