Lochinvar Knight 151 Installation & Operation Manual page 17

3
Hydronic piping
Figure 3-4 Single Boiler - Single Temperature Zoned with Circulators
PRESSURE
REDUCING VALVE
BACKFLOW
PREVENTER
MAKE UP WATER
SYSTEM SUPPLY
AIR SEPARATOR
BALL VALVE
(TYPICAL)
DRAIN POINT
(TYPICAL)
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.
Indoor tank shown for illustration purposes.
(continued)
ZONE #1
PRESSURE
GAUGE
SENSOR
(WHEN USED)
EXPANSION
TANK
MAY SUBSTITUTE LOW LOSS HEADER
Y-STRAINER
(RECOMMENDED)
BOILER
CIRCULATOR
UNION
(TYPICAL)
TEMPERATURE /
PRESSURE
DRAIN
GAUGE
Outdoor Knight Boiler Installation & Operation Manual
ZONE #2 ZONE #3 ZONE #4
DOMESTIC
HOT WATER
CIRCULATOR
BOILER
FLOW CHECK
VALVE
(TYPICAL)
ZONE CIRCULATORS
(TYPICAL)
HOT
WATER
OUT
ANTI-SCALD
MIXING VALVE
COLD
WATER
INDIRECT
DHW TANK
IMG00370
IN
17