AEC Glacier Series Air and Water Cooler Portable Chillers - Manual (Page 31)

Page 30 Glacier Series Portable Chillers
The reservoir is not designed to withstand water pressure in excess of 5 psi. The fill opening and
vent line must be vented to the atmosphere for proper operation. The optional automatic make up
system is described in Section 3-12 on Page xx.
If your application has chilled water or process piping above the reservoir fill and vent level,
install a standpipe to a point 1'0" (30 cm) above the highest point in the system.
Installation Note: In applications where the process or process piping is 15 feet (3 m) or more
above the reservoir, take steps to prevent over-pressurization of the
reservoir.
This condition can occur on system shutdown when the water in the system
drains into the reservoir. To prevent this, install a check valve in the unit
TO
PROCESS line and a vacuum breaker at the high point of the return FROM
PROCESS line. See Figure 13 on the following page for more information.