York YLAA0041 Installation Operation & Maintenance page 45

Form 150.72-ICOM6
Issue date: 12/19/2023
Generally, the thermal dispersion flow switch is
shipped with the unit as a loose part.
To mount the IFM thermal dispersion switch, use the
following guidelines:
• Use a pipe coupling to mount the thermal disper-
sion flow switch. The length of the pipe coupling
must be suitable to ensure that the insertion depth
of the sensor is at least 12 mm.
• Mount the thermal dispersion flow switch in hori-
zontal pipes from the side. If it has to be mounted
in vertical pipes, mount the switch in the rising
pipes.
• Mount the thermal dispersion flow switch on the
top of the horizontal pipes only if the pipe is fully
filled with liquid. Mount the thermal dispersion
flow switch on the bottom of the horizontal pipes
only if the pipe is free from buildup.
Johnson Controls
• Ensure that the sensor tip does not contact the pipe
wall. Do not mount it in a downpipe, in which the
liquid flows downwards.
• Avoid turbulence of the liquid resulting from
bends, valves, reducers, and other pipe fittings.
Ensure that the distance from the potential turbu-
lence upstream or downstream of the sensor loca-
tion is at least 5 times of the pipe diameter.
• Connect the control monitor with the flow sensor
directly. No extension cable between them is al-
lowed.
Section 4: Installation
4
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