Pacific Research Solutions PET-820 User Manual
Page 49
Pacific Research
PET-820 User Manual
Page 48
6.3.2
TO MOUNT ON CONCRETE OR MORTAR WALLS
1.
Place the template (included in "Appendix-D") on the wall and mark the three screw positions.
2.
Drill three holes and drive the anchor plugs (included) with a hammer, flush to the wall.
3.
Install the top middle screw into the anchor plug so that the head is 1/16" to 1/8" from the wall.
4.
Remove the terminal cover, this is the lower cover that is held on by two screws. Hook the PET-820 on the first
screw already installed.
4.
Finish mounting the PET-820, using the lower two holes on the left and right side of the terminal compartment.
6.4
CONNECTIONS
There are six 1/2" conduit knockouts, three on the bottom and three on the back, provided in the PET-820 enclosure. Before
punching out these knockouts, you should remove the front panel and circuit board or boards from the enclosure as not to
damage them. The main circuit board will rotate out of the enclosure without force. Make sure the enclosure is on a flat and
solid surface. Using a punch and hammer tap on the inside edges of the knockout plug until it is removed. Once this is done
the circuit board and panel may be replaced.
When connecting conduit to the PET-820 enclosure, use only U.L. LISTED or recognized conduit hubs that have a minimum
of NEMA 12 type rating, same as the enclosure. Conduit hubs must be connected to the conduit before being connected to the
enclosure.
Refer to figure 6.1 for additional information on connections.
1.
Attach an earth ground wire minimum 18 gauge to the PET-820 terminal 22. Although a ground terminal is
provided on the three prong line cord, a direct connection to a ground rod is preferred. Do not use conduit, gas or
water pipe. A good earth is required in order for transient protection to be effective.
2.
Direct wire or connect the three prong line cord white wire (NEUTRAL) to terminals 21 and the black wire (LINE)
to terminal 20, do not plug in the line cord or connect AC power at this time.
3.
Turn the power switch off. The switch is located behind terminal 20, 21, and 22.
4.
If 12VDC operation is intended, make sure the power switch is off and connect the positive battery terminal to the
PET-820 terminal 23 and the negative battery terminal to PET-820 terminal 24.
5.
Connect the telephone line, loop circuits and relay contacts as required per your installation planning.
6.
Verify that the program enable switch, right of the power switch is off.
7.
Connect AC power or plug in three prong line cord.
8.
Turn on the power switch.