Figure 5-3_Primary/Secondary Piping of a Single Boiler
DIR #2000527832 00
TO FLOOR DRAIN
TO EXPANSION TANK AND
MAKEUP WATER SYSTEM
HEATING SUPPLY LOOP
HEATING
RETURN
LOOP
12” MAX OR 4 PIPE DIAMETERS
28
Installation & Operation Manual
*Please note that these illustrations are meant to show system piping concept only, the installer is responsible
for all equipment and detailing required by local codes.
NOTICE
5
Water connections