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Installation
Locating the Sensor
Because each sensor can only "report" what it is
seeing at the moment, it is very important that the
sensor be located where leaks are most likely to
occur. CFC/ HCFC/HFC vapor is heavier than ambient
air, so in a room with no air movement it will tend to
settle. For quickest detection, mount the sensor about
one to two feet from the floor, close to the potential
leak source.
If the primary application is the fastest possible leak
detection, mount the sensor near the potential leak
sources. In doing this, be aware that the indicated
concentration may not be representative of personnel
exposure and easy access for the required calibration
and maintenance could be compromised.
General Mounting Considerations:
• Must be easily accessible for calibration and
maintenance.
• Always mount the sensor vertically.
• Mount the sensor close to the potential leak source
for fastest possible leak detection.
• If personnel protection is the primary application,
mount in the "breathing zone."
• Protect sensor from water, excessive humidity, and
wash-down.
• Take air movement and ventilation patterns into
account.
• To prevent electrical interference, keep sensor and
wire runs away from mercury vapor lights, variable
speed drives, and radio repeaters.
• Protect sensor from physical damage (fork lifts,
etc.).
• Do not mount the sensor over a door in a
refrigerated area.
• For highly critical locations more than one sensor
should be installed in each room.
Very Important:
• Sensor must be mounted vertically
• Never mount sensor flat on a ceiling
• Enter enclosure only through existing hole in bottom
of enclosure
• Always make a drip loop in the conduit
• Never mount sensor on a vibrating surface.
Mount sensor enclosures through the flange holes as
AirScan iR - Industrial
shown in Figure 1, and always mount vertically.
Penthouses:
Multi-Coil (defrost one coil at a time) In this case
the best location is usually in the center of the
penthouse four or five feet above the grate.
Single Coil (or when all coils defrost at the same
time) In this case high moisture conditions can
occur and the sensor should be mounted one foot
above the grate.
Engine Rooms: The Manning AirScanTMiR sensor
should be mounted in a cool part of the room,
if possible. Keep the sensor away from hot air
exhausting from electric motors or other machinery.
Figure 1. Mounting Dimensions
5
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