Rockwell Automation FANM FanMaster Energy Saving Package - Manual (Page 22)

2-4 FanMaster Installation
Allen-Bradley® FanMaster™ Energy Saving Package Installation Manual - Publication FANM-IN001B-EN-P – December, 2009 PN-65329
Installation Install the Instruments on the AHU
Refer to Figure 2.1 on page 2-3 the for guidance on instrument locations.
Important: Instrument cables must be no longer than 3200 m (10499 ft) for
4…20 mA signals using a minimum of 20 AWG wire and 200
m (656 ft) for digital signals using a minimum of 20 AWG
wire.
Supply Air Temperature Transmitter
•
Using the two screws and mounting flanges provided on the enclosure,
mount the supply air temperature transmitter to the outside of the AHU
sheet metal cover, in the middle of the supply air plenum. Placement
must be after the heating and cooling exchangers.
Important: Verify that the transmitter probe is installed in a position
that does not cause contact with any internal equipment
and that no internal equipment will be damaged while
drilling the insertion and mounting holes.
Mixed Air Temperature Transmitter
•
Using the two screws and mounting flanges provided on the enclosure,
mount the mixed air temperature transmitter to the outside of the AHU
sheet metal cover, in the middle of the mixed air plenum. Placement
should be in a position where the outside air and return air are equally
mixed and the temperature reflects the average temperature entering the
heating and cooling exchangers.
Important: Verify that the transmitter probe is installed in a position
that does not cause contact with any internal equipment
and that no internal equipment will be damaged while
drilling the insertion and mounting holes.
Carbon Dioxide Sensor
•
Using the two screws and mounting flanges provided on the enclosure,
mount the carbon dioxide sensor in the return air plenum. Placement
must be prior to the mixing of outside air with the return air.
Important: The carbon dioxide sensor will not operate properly
below 0
°
C (32
°
F).
Important: Verify that the sensor probe is installed in a position that
does not cause contact with any internal equipment and
that no internal equipment will be damaged while drilling
the insertion and mounting holes.