Perma Pure Micro-GASS UG - Manual (Page 8)

8 Micro-GASS User Manual
3. Installation
3.1 Mounting
The Micro-GASS enclosure is rated NEMA-4, but the system is intended for indoor installation. For
mounting, choose a location to avoid exposure to direct sunlight as it may raise the internal
temperature above the operating limits, nor should the system be subjected to extreme cold
temperatures (< 10°C). Vertical orientation of the system is required for proper operation of the
flow meter. A set of four mounting feet are supplied for mounting the system on 12 ¼” centers.
3.2 Electrical Connections
Standard 110VAC receptacle is provided. For 220-volt systems, a pigtail cord is
provided for connection to the appropriate 220-volt plug (not provided).
For connection to the heated line, two female and one male bullet connectors; for neutral, line, and
ground connections respectively, are provided. An in-line fuse holder is provided for a fuse not to
exceed 10 amps (See wiring diagram on page 16).
3.3 Plumbing
a. Sample Connections
To prevent condensation of the sample gas, a heated
line may be required. The Micro-GASS is supplied
with a heat shrink sealing heated-line fitting sleeve or
“boot”. Connect the boot to the enclosure with the
fitting hub inside the enclosure and the o-ring seal on
the outside, as shown in Figure 3, tighten to secure.
The heated sample line passes through the sleeve
into the enclosure. Remove the insulation from the
heated line and connect the sample line to the ¼”
Figure 3
compression fitting at the inlet to the filter body.
Heat-shrink the boot sleeve to the heated line:
1. Before heat shrinking the boot connect the sample line to the filter and ensure that it
is in its final and ultimate position. The sleeve is adhesive lined and the heated line
cannot be removed after shrinking.
2. Provide adequate ventilation. Fumes from burning can cause eye, skin, nose and
throat irritation.
3. Using a low intensity heat source; such as a hot air heat gun, or infrared heat
source, heat the boot evenly until the sleeve shrinks into place. Allow extra heating
time to ensure that the adhesive melts and flows for proper adhesion.
4. Keep the heat source 1" away from the heated line. Keep the heat source moving;
do not concentrate the heat in one place. If charring or burning occurs, stop
heating immediately.
HEATED SAMPLE
LINE
FITTING
SLEEVE
O-RING
SEAL
FITTING
HUB
MINI-GASS
ENCLOSURE