A.O. Smith APW015DW Installation & Service Manual page 13

3
Hydronic piping
Figure 3-6 Multiple Units with Boiler Side Buffer Tank as a Zone
APW WATER HEATER
Please note that these illustrations are meant to show system piping concept only, the installer is responsible
NOTICE
for all equipment and detailing required by local codes.
Indirect Plate Water Heater Installation & Service Manual
(continued)
ZONE SUPPLY
ZONE RETURN
AUTOMATIC AIR VENT
BUFFER TANK
ZONE PUMP
DIR #2000577555
13