Air Flow Switch; Control Unit - Emerson OPM4001 Installation And Operation Manual

I N S T R U C T I O N M A N U A L

AIR FLOW SWITCH

If you have an airflow alarm when the system is powered check the airflow switch. With the blower running and the source under
normal conditions disconnect the leads of the switch and place an ohmmeter across them. The switch should be closed, less than 2
ohms, if flow is enough to overcome stack pressure and blower inlet is clear. Cover the air cleaner inlet and verify the switch opens.
Replace the leads the test is complete.

CONTROL UNIT

Mount the control unit at eye level for best viewing of the display.
Cut out for panel mounting is shown in the drawing section. Insert the control unit through the cut out hole. Insert the panel
mounting hardware in the slots provided on each side of the control unit from the rear. Tighten the screws until the control unit is
securely held in place.
Wire the control unit per drawing section and Energized power.
NOTE: CONTROLLER REQUIRES 24VDC.

5.7" 256-Color Touch panel, QVGA TFT display (or CSTN), 197X146.6X68.5mm (7.75" X 5.77" X2.7")

Display 'touchable' images, text and graphs according to real-time conditions and historical values

'Touch' properties can be assigned to all text and graphic on-screen elements

Data entry/modification via keypad

LCD illuminated screen

Virtual keyboard

Info mode: view/modify I/O status, integer values, and system data via the
panel
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