Conair EARTHSMART UGH031-0209 - Manual (Page 69)

A p p e n d i x l G - 1
O v e r h e a d P l u m b i n g D e t a i l s
Overhead piping installations above process connections require installing a check
valve in the “To Process” line and a 12 inch {305 mm} riser with a check valve and
vacuum break in the “From Process” line to prevent siphoning when shutting down
the chiller. Install a vent tube at 12 inches {305 mm} above the highest system point
to prevent over pressurization. Maximum height of piping above process connections
is 25 ft {7.6 m}.
back view
Internal vent; 1 ft above
highest water level
vacuum break
check valve
12 in. riser
From process
To process