4
MKT-0262 MPC-1748 Rev 02/13
Advanced Pressure Monitor II Rough-In Installation
Installation Overview
•
Strip 0.25" (6.4 mm) of insulation from each conductor, twist the strands, insert the conductor fully into
the terminal block, and tighten the terminal.
•Test the wire connection by pulling on each conductor.
WARNING:
Wiring must
b
e performed
b
y a licensed electrician according to local and state codes.
1.3.2 Wiring Triple Gang Electrical Box
USE ONLY THE KNOCKOUTS ON THE TOP OR BOTTOM AT THE BACK OF THE ROUGH-IN
ELECTRICAL BOX.
The front knockouts will be inaccessible once the APM2 is installed. Strain relief and seal
box as required.
NOTE:
Install power and signal wires into separate knockouts to avoid noise.
Figure 1-2.
Wiring in the Triple Gang Electrical Box
1.3.3 Plumbing Rough-In
If the internal pressure sensor will be used, then typically a Pressure Pickup Port is installed in the monitored
room and another one is installed in the reference area (typically a hallway). 0.25" nylon tubing is typically used
to bring the pressure signal from this point of measurement to the pressure inputs on the back of the APM2.
Install a single gang electrical box anywhere inside the room, typically high on the wall in an inconspicuous area.
This will be used for the room pressure signal (room monitor pressure port labeled
HIGH
). Run 0.25" tubing
from this electrical box to the triple gang box that the pressure monitor will be mounted to in the finish stage
of the installation.
CAUTION:
Be careful in running the tu
b
ing in a way that the tu
b
e is protected from
b
eing damaged
b
y
b
eing cut
or penetrated
b
y screws or nails or
b
eing crimped so that the pressure signal integrity is affected. Do
not tighten strain reliefs so that they crimp the tu
b
ing. Tape the open ends of the tu
b
es closed to
prevent contamination of the inside of the tu
b
ing.
Install a second single gang box on the corridor, ante room or other reference pressure area. This will be used
for the low pressure side or reference side pressure signal. This will be run to the triple gang box and connected
to the APM2 pressure port labeled
LOW
.
