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L-1. Maximum Draft or Combustion Air Verification
Press the “Increase” button until the CPC-3 display shows the fan is running at 100% speed.
Wait up to 90 seconds for Actual Pressure to stabilize.
Record the Actual Pressure
Top Line Reads:
(Disregard if system is for Combustion Air only)
Second from Top Line Reads:
(Disregard if system is for Draft only)
M-1. Ending the System’s Test Mode
Press the “Enter” button once. "Test Run Off" appears on the bottom line of the CPC-3 display. If "Test Run Off" does
not appear press the “Enter” button again.
Press the “Set Up” button once. "Key Pad Open" appears on the bottom line of the CPC-3 display. If "Key Pad Open"
does not appear press the “Set Up” button again.
Press the “Enter” button once. “Lock Out Key Pad” appears on the bottom line of the CPC-3 display. If "Key Pad Open"
does not appear press the “Set Up” button again.
Press the “Save Setting” button once. “Key Pad Locked” appears on the bottom ine of the CPC-3 display. If "Key Pad
Open" does not appear press the “Set Up” button again.
THIS GUIDE IS NOW COMPLETE. CONTINUE TO THE INTERLOCK AND BAFFLE BALANCING
GUIDE TO COMPLETE THE SYSTEM’S START-UP PROCESS.
I-2. Testing Rotation: Multiple Fans
Press the “Increase” button until the CPC-3 displays that the fan is running at 5% speed.
Locate the fan and visually inspect to confirm that the rotation of the impeller for each fan
is rotating in a counter-clockwise manner.
For a
VSUB
,
look at the cooling fan of the impeller which rotates the same
direction as the VSUB impeller
.
For a
VSAD
,
look through the discharge grill
to inspect the rotation of the
impeller.
NOTE
If at 5% speed you cannot conclusively confirm the rotation of the impeller, powfer down
the fan by switching the roof disconnect switch to the off position. As the fan impeller
slows, visually inspect the fan to confirm the direction of its rotation.
Operation
Mode
Set
Point
Actual
Pressure
% Speed
Operation
Mode
Set
Point
Actual
Pressure
% Speed
8
Note: The above numbers have no meaning in regards to these steps--
they are merely placeholders. Your numbers do not need to match these.