Lochinvar WH 55-399 Hydronic piping, Installation & Operation Manual, Notice Notice, ZONE #1

Installation & Operation Manual

6 Hydronic piping

Figure 6-11Single Boiler - Full Flow - Single Temperature Zoned with Valves - DHW Piped as a Zone

ZONE #1

PRESSURE

REDUCING VALVE PRESSURE

GAUGE

BACKFLOW

PREVENTER

MAKE UP

WATER

SYSTEM SUPPLY

SENSOR

AIR SEPARATOR

EXPANSION

TANK

BALL VALVE (TYPICAL)

ZONE #2 ZONE #3 ZONE #4

ZONE VALVES (TYPICAL)

DIFFERENTIAL PRESSURE BYPASS VALVE (RECOMMENDED)

DRAIN POINT

(TYPICAL)

BOILER CIRCULATOR

Y-STRAINER (RECOMMENDED)

PRESSURE

RELIEF VALVE

HOT

WATER

OUT

ANTI-SCALD

MIXING VALVE

COLD WATER IN

BOILER

NOTICE

NOTICE

UNION

(TYPICAL)DRAIN

TEMPERATURE /

PRESSURE

GAUGE

It is the responsibility of the installer to ensure that the minimum flow requirements of the boiler are met at all times during boiler operation. If the minimum flow requirements cannot be met at any time the boiler must be hydraulically separated from the system.

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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