FMS-2000M Lite
LIT-12013692
15
The FMS-2000M Lite Critical Environment Monitor includes one remote pressure sensor to measure the differential pressure of the
monitored spaces. Install the remote pressure sensor module in the wall facing the monitored space such as an isolation room. Install
the flow tube mounting plate facing the adjoining reference space such as the corridor or anteroom. With this sensor orientation, a
positive pressure value indicates that the monitored space is positive with respect to the reference space. Choose a location that is
away from any moving air source such as ceiling-mounted air registers. This can cause unstable sensor behavior.
See
Figure 8
for more
information.
Before you begin, determine the sensor location and gather the cable that you need. To mount the remote pressure sensor, make sure
you have the following tools:
•
a drill and a 7/16 in. drill bit
•
a #2 Phillips head screwdriver
•
a drywall saw or an oscillating tool with a drywall saw blade
To mount the remote pressure sensor, complete the following steps:
1.
Connect a 4-conductor 22 AWG cable between the remote pressure sensor module. The length of the cable should not exceed
1,000 ft.
2. Remove the sensor’s louvered cover plate and stainless steel backplate from the orange wall bracket.
3. Cut an opening in the wall of the monitored space for the orange low voltage mounting bracket and for the remote pressure sensor
electronics. Nominal hole dimensions are 3.65 in. (9.271 cm) H x 2.15 in. (5.461 cm) W.
4. Use the rotating clamps to secure the bracket to the wall safely.
5.
Drill a 7/16 in. hole through the opposite wall for the flow tube.
6. Pull the 4-conductor signal wire through the cut out.
7. Install the mounting bracket in the drywall opening and pull the 4-conductor signal cable through the mounting bracket.
8.
Push a length of flow tube through the hole and the 7/16 in. hole in the opposite wall.
9.
Attach the flow tube to the sensor port.
When you install the mounting plate directly opposite the sensor, cut the flow tubing as short
as possible to prevent kinks.
10.
Push the tube and sensor module into place and secure it with the two #6-32 x 3/4 in. screws supplied.
11. Screw the louvered cover plate to the front.
12.
In the reference space, attach the flow tube to the barbed fitting of the flow tube mounting plate.
Apply thin silicone caulking around
the tube, between the stainless steel plate and the wall to seal against penetration.
13. Press the mounting plate into place. Allow the excess tube length to go into the wall space. Secure the mounting plate with the
screws and anchors.
14. Screw the louvered cover plate to the front.
Mounting the remote pressure sensor
