Installation & Service Manual

4Hydronic piping

Primary / Secondary Piping

Figure 4-4_Primary / Secondary Piping of a Single Boiler

MAY SUBSTITUTE

LOW LOSS HEADER

AIR SEPARATOR

M E T S Y S M O R F

DRAIN POINT (TYPICAL)

SYSTEM SUPPLY SENSOR (WHEN USED)

SYSTEM CIRCULATOR

M

E

T

S

Y

S

O

T

 

NOT TO EXCEED 4 PIPE DIA OR MAX. OF 12" APART

 

BALL VALVE

 

(TYPICAL)

PRESSURE GAUGE

 

 

PRESSURE RELIEF

EXPANSION TANK

VALVE

 

 

TEMPERATURE / PRESSURE

 

GAUGE

Y-STRAINER

 

(RECOMMENDED)

MAKE UP WATER

BACK FLOW

 

FLOW SWITCH

FLOW CHECK

 

PREVENTER

 

VALVE (TYPICAL)

DRAIN

 

PRESSURE REDUCING

 

 

 

VALVE

BOILER CIRCULATOR

 

 

 

BOILER

UNION (TYPICAL)

NOTICE

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.

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Lochinvar 500, 90 service manual 4Primary / Secondary Piping of a Single Boiler