C.7 Wiring Diagram
See “Figure 2-4. Wiring Diagram” on page 4-6
A AUXILIARY POWER INPUTS (J4)
PIN 2 PIN 1
B AUXILIARY POWER INPUTS (J5)
PIN 2 PIN 1
POS (+) NEG (-) POS (+) NEG (-)
PAGE 3 H2 ZERO: VRLA BATTERY ROOM HYDROGEN VENTILATION SYSTEM
FORM C PINOUT (J6)
PIN 2 PIN 1
OPEN OPEN
COM NC/NO
Jumper J4 and J5 (auxiliary power inputs) is necessary when connecting between H2 Zero Main Controller using the minor alarm
dry contact.
Jumper J6 is used to select whether the re suppression signal is normally open or normally closed.
See “Figure 4. Scheme 4 Wiring Diagram” on page 6
C.8 Power-On and Test
Before powering on the system, ensure that:
The damper unit is securely mounted on the wall.
There is no obstruction of the damper door.
The POWER ON switch on the controller I/O board is in the OFF position.
Turn OFF all the breaker feeding system.
Power on the system as follows:
Step 1. Turn OFF all the breaker feeding system and the controller I/O board before installing the Return Air
Damper Unit.
Step 2. After installing the Return Air Damper Unit turn the POWER switch on the controller I/O board to ON
position.
Step 3. The BLUE Power LED on the Return Air Damper unit should turn ON, within one minute.
When the Return Air Damper unit is powered up for the rst time, it will perform an automatic test an will cycle the Return Air
Damper once.
During the cycle all four LED will illuminate for a few seconds and the green LED will ash. The amber LED will illuminate if the
damper door is in the OPEN stage. The red FAULT LED will illuminate if any malfunction or obstruction. Once the automatic test
is complete the damper will be in a closed position with the green READY LED on steady.
C.9 Detail Drawing
See “Figure 5 Detail Drawing”on page 7
INSTALLATION & OPERATIONAL MANUAL
