Lochinvar 000 - 500 Installation & Service Manual page 30

4
Hydronic piping
Primary / Secondary Piping
Figure 4-4_Primary / Secondary Piping of a Single Boiler
LOW LOSS HEADER
AIR SEPARATOR
DRAIN POINT
(TYPICAL)
SYSTEM SUPPLY SENSOR
(WHEN USED)
SYSTEM CIRCULATOR
MAKE UP WATER
BACK FLOW
PREVENTER
PRESSURE REDUCING
Please note that these illustrations are meant to show system piping concept only, the installer is responsible for
NOTICE
all equipment and detailing required by local codes.
30
MAY SUBSTITUTE
PRESSURE GAUGE
EXPANSION TANK
VALVE
BOILER CIRCULATOR
NOT TO EXCEED 4 PIPE DIA OR MAX. OF 12" APART
BALL VALVE
(TYPICAL)
Y-STRAINER
(RECOMMENDED)
FLOW CHECK
VALVE (TYPICAL)
Installation & Service Manual
PRESSURE RELIEF
VALVE
TEMPERATURE / PRESSURE
FLOW SWITCH
DRAIN
UNION (TYPICAL)
GAUGE
BOILER