Rockwell Automation FANM FanMaster Energy Saving Package - Manual (Page 18)

1-12 FanMaster Overview
Allen-Bradley® FanMaster™ Energy Saving Package Installation Manual - Publication FANM-IN001B-EN-P – December, 2009 PN-65329
• Pressure Low Limit InWC - This value sets the minimum inside vs.
outside air pressure. If the differential is below this value (in a negative
direction) the fan speed will increase to 100%. The default value of
-0.010 means the outside air pressure is just slightly higher than the
inside air. If necessary, adjust this value so that the fan only goes into
override speed when building doors are opened or if some other factor
requires periodic additional airflow. Do not set this value such that
FanMaster is in continuous override. You may find that the HVAC unit
fan speed has no measurable affect on building pressure. In this case turn
off the pressure mode completely and do not use the sensor.
Integration of FanMaster
into Building Automation
Systems FanMaster provides an alarm contact for monitoring of faults by an existing
building automation system (BAS). This contact is normally closed when
FanMaster is operating properly. If power is not supplied to FanMaster or if
FanMaster detects certain conditions (see
FanMaster Alarms on page 4-2
for a complete list) the fault contact will open. The alarm panel lamp on the
FanMaster unit will also be illuminated if any of the alarm conditions are
detected. The alarm contact and alarm lamp will return to normal when the
fault condition has returned to a normal state.