8
8
5. Drill one 9/16 inch (14 mm) diameter hole in the size wall of the
fume hood approximately 6 inches (152 mm) behind the sash and
1 inch (25.4 mm) above the sash bottom when it is at its true fully
open position. Insert the side wall adapter from the inside of the
hood and securely lock it in place from the back with the locking
ring.
6. Connect the input/output signal wiring, if required, to the terminal
block on the back of the monitor. See the Electrical Wiring below.
7. Connect one end of the supplied air hose to the side wall adapter.
Route the hose as necessary to avoid kinks and bends which can
affect proper air flow. Trim slightly if required. Firmly connect the
other end to the flow tube on the back of the monitor.
8. Connect the power cord to the power jack.
9. Screw the monitor to the fume hood with the self-tapping screws
provided.
10. Plug the power supply into an appropriate electrical outlet.
Electrical Wiring
Power Jack
— Power is supplied to the monitor through a power jack
located on the back of the monitor. For units shipped within the United
States and Canada, a suitable AC/DC power supply is supplied with the
unit. Plug the power supply into 120 VAC nominal 60 Hz mains.
For monitors shipped outside the US/Canada, a 2.1 mm plug with a
1.8 m cord is provided. See the Specification section on the inside front
cover for power requirements.
Terminal Block
— The monitor has a seven-pin screw terminal block
connector protruding from the back of the monitor. The terminal block
accepts 14-24 AWG wires. These connections are for input/output
features. See the Configuration Parameters section where indicated.
The connections available are described below:
DIS INPUT: This allows you to activate the Test/Reset or Emergency
Purge functions with a remote contact closure or remotely disable the
monitor or change to a lower alarm setpoint during night setback. The
night setback function may be wired to use open or closed contacts.
When wired for “open” contacts, opening the contacts will disable the
monitor; when wired for “closed” contacts, closing the contacts will
disable the monitor. The connection should be made through a switch
to the INPUT COM terminal. See Configuration Parameter P07.
