Crown Boiler PHNTM080 - Page 98

96
Indirect
Water
Heater
Exp.
Tank
DHW
Pump
Boiler
Boiler
Pump
RS
System
Pump*
CH(Heating)Zone
*SystemPumpOperation:
Option1–OffduringDHW
priority
Option2–Onanytimethereis
callforCH
FIGURE 12.2: PIPING FOR DHW OPTIONS #1 & 2 (ALSO SEE FIGURES 9.3A & 9.3B)
Indirect
Water
Heater
Exp.
Tank
DHW
Pump
Boiler
Boiler
Pump
RS
CH(Heating)
Pump–Controlsuppliedbyinstaller
CH(Heating)Zone
SystemPump‐
RunsonCallforCHorDHW
FIGURE 12.3: PIPING FOR DHW OPTION #3