Rockwell Automation FANM FanMaster Energy Saving Package - Manual (Page 48)

3-12 FanMaster Configuration and Start Up
Allen-Bradley® FanMaster™ Energy Saving Package Installation Manual - Publication FANM-IN001B-EN-P – December, 2009 PN-65329
34. Press “Next”. The third Setup screen displays.
35. If the AHU does not have a heating system, press “No” next to “Does
AHU Have Mech Heating?”. “Mech Heat” changes to display “No
Mech Heat”.
36. If the AHU does not have a cooling system, press “No” next to “Does
AHU Have Mech Cooling?”. “Mech Cool” changes to display “No
Mech Cool”.
37. If FanMaster will not be allowed to override the BAS control of the
outside air damper, press “No” next to “Allow Outside Air Damper
Override for Additional Savings?”. “Damper Override” changes to
display “No Damper Override”.
38. If the FanMaster will override the BAS control of the outside air
damper, press the value next to “Override Duty Cycle %” and enter the
percent of time the outside air damper will be closed during a 20 minute
cycle time. Enter a value between 10…50%. 10% = 2 minutes closed /
18 minutes open. 50% = 10 minutes closed / 10 minutes open.
Maximum savings setting = 50%.
39. If a pressure sensor is not used, continue with step 40 . If a pressure
sensor is used, press the value next to the “Pressure Low Limit inWC”
field and enter the inWC value below which FanMaster will command
the supply fan speed to increase in order to maintain the appropriate
pressure level.
40. If a CO
2
sensor is installed, press the value next to the “CO2 Demand
Setpoint ppm” field and enter the CO
2
parts per million (ppm) at which
outside air ventilation should occur. In this case, 60 seconds after the
value in this field has been exceeded, FanMaster will release override
control (if enabled) of the outside air damper, allowing it to return to the
normal position (open) and the supply fan to ramp to 100% speed until
the CO
2
level is 50 ppm below the setpoint.