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4.3
chAnGinG operAtinG moDes
When used with a PIR9400, the operating mode of
the UD10 must be changed from “HART Device” to
“PIR9400” mode. Refer to the “Startup” section of this
manual for details.
orientAtion
It is highly recommended that the pIR9400 be
installed in the horizontal position.
The detector
is not position-sensitive in terms of its ability to detect
gas. However, the weather baffle assembly provides
superior performance when installed in a horizontal
position. (See illustration below).