15
4
Hydronic piping
(continued)
Figure 4-3 Domestic Indirect Water Heating
Boiler must be sized to meet all space heating and domestic hot water loads simultaneously. Failure to properly
size the heat source can cause operational issues.
WARNING
BACKFLOW
PREVENTER
PRESSURE
REDUCING
VALVE
PRESSURE
GAUGE
AIR
SEPARATOR
LOW TEMP.
ZONE
ZONE #1
SHUTOFF
VALVE
(TYPICAL)
HIGH
RETURN
LOW
RETURN
TEMPERATURE
GAUGE
EXPANSION
TANK
MIXING
VALVE
PRESSURE
RELIEF
VALVE
IMG00125
ZONE
CIRCULATORS
(TYPICAL)
UNION
Y-STRAINER
(TYPICAL)
BOILER
CIRCULATOR
T&P
GAUGE
DRAIN
PRESSURE
RELIEF
VALVE
CHECK
VALVE
SHOCK
ARRESTOR
CHECK
VALVE
DOMESTIC
HOT WATER
DOMESTIC
COLD WATER
MAKE UP
WATER
AUXILIARY
HEAT
SUPPLY
SPACE
HEAT
SUPPLY
BRAISED PLATE
HEAT EXCHANGER
TEMPERATURE
TEMPERATURE
HIGH TEMP. HIGH TEMP.
ZONE #2
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
