21
Installation & Operation Manual
5
Boiler side piping
(continued)
IMG00091
BACKUP
HEAT SOURCE
PRESSURE
RELIEF VALVE
BOILER
CIRCULATOR
TEMPERATURE /
PRESSURE
GAUGE
DRAIN
CHECK
VALVE
Y-STRAINER
(TYPICAL)
EXPANSION
TANK
FILL
VALVE
PRESSURE
RELIEF VALVE
AIR
SEPARATOR
TEMPERATURE
GAUGE
BACKUP
HEAT
SOURCE
SENSOR
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
Figure 5-2 Multiple Tank Backup Heat Source Connection