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Two blowers for large rooms, (see also section on flex-duct testing)
Use the second control cord for blower #2. Install while the blower is on the ground, and then install the
blower in the panel.
Complete steps 1 to 3 on the previous page first. Then go to step 7.
7. Turn on the power to blower
#1 and #2.
9. When the desired room
pressure is achieved, flip the
toggle up to "Flow". Read the
flow pressure (Flow #1) for 30
seconds.
2000 Fire Door-Fan Manual
8. Adjust the speed controls to get
the required room pressure. Read
the room pressure for 30 seconds.
10. Read the flow pressure (Flow #2)
for 30 seconds. Turn the blower OFF
with the rocker switches and turn
the blowers around to test the other
direction. Go to Step 6.
updated 2002-05-28
Page 28 of 58
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