Figure 5-4_Primary/Secondary Piping with DHW Normal
DIR #2000530477 00
TO EXPANSION TANK AND
MAKEUP WATER SYSTEM
HEATING SUPPLY LOOP
HEATING
RETURN
LOOP
SYSTEM PUMP
12” MAX OR
4 PIPE DIAMETERS
BOILER
PUMP
CHECK
VALVE
FROM
TO
INDIRECT
DOMESTIC
HOT WATER
29
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
(continued)