Lochinvar 500 4Hydronic piping, Primary / Secondary Piping, Installation & Service Manual, Tank

Installation & Service Manual

4Hydronic piping

Primary / Secondary Piping

Figure 4-8_Multiple Boilers Zoned with Circulators

TEMPERATURE

LOOP 3

TEMPERATURE

LOOP 2

TEMPERATURE

LOOP 1

AIR SEPARATOR

M

E

T

S

Y

S

O

T

M

E

T

S

Y

S

M

O

R

F

Y-STRAINER

PRESSURE

GAUGE

MAKE UP WATER

BACK FLOW PREVENTER

PRESSURE REDUCING VALVE

SYSTEM SUPPLY SENSOR ( WHEN USED )

DRAIN POINT (TYPICAL)

NOT EXCEED 12" APART

(RECOMMENDED) (TYPICAL)

FLOW CHECK

VALVE (TYPICAL)

BOILER CIRCULATOR

	MAY
	SUBSTITUTE LOW
	LOSS HEADER
EXPANSION
TANK	PRESSURE
	RELIEF
	VALVE

		FLOW CHECK
INDIRECT DHW		VALVE
TANK
ANTI-SCALD
MIXING VALVE
HOT WATER OUT
	DRAIN	BALL VALVE
		(TYPICAL)
COLD WATER IN

DRAIN ( TYPICAL )

BOILER 2

TEMPERATURE / PRESSURE GAUGE ( TYPICAL)PRESSURE RELIEF VALVE (TYPICAL)

BOILER 1

UNION (TYPICAL)

DOMESTIC

HOT WATER

CIRCULATOR

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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