Lochinvar COPPER-FIN CW 745 - Manual (Page 20)

A4 L o c h i n v a r D E S I G N E R ’ S G U I D E C O P P E R - F I N W A T E R H E A T E R 6 1 5 - 8 8 9 - 8 9 0 0
PIPING DIAGRAM TWO HEATERS-SINGLE TANK
FULL PORT
BALL VALVE
SYSTEM
PUMP
SYSTEM
RELIEF VALVE
TEE ELBOW UNION EXPANSION
TANK
CHECK
VALVE
THERMOMETER REDUCING
TEE
REDUCING
TEE
L E G E N D
LOCHINVAR
WATER HEATERS
INLET
INLET
OUTLET
RELIEF
VALVE
OUTLET
BUILDING RETURN
DRAIN
LOCK-TEMP
STORAGE TANK
COLD WATER
SUPPLY
BUILDING
HOT WATER
SUPPLY
LIT0138
This illustration is for concept only and should not be used for any actual installation without engineering
or technical advice from a licensed engineer. All necessary equipment may not be illustrated.
COMMON WATER MANIFOLD SIZE FOR MULTIPLE WATER HEATER INSTALLATION
Pipe sizing chart provides minimum pipe size for common manifold piping to ensure adequate flow.
NUMBER OF COMMON MANIFOLD SIZE NUMBER OF COMMON MANIFOLD SIZE
UNITS (Min.) UNITS (Min.)
CW 495-745 CW 986-2066
1 2” 1 2-1/2”
2 3” 2 4”
3 3-1/2” 3 4”
4 4” 4 5”
5 5” 5 6”
6 5” 6 6”
Gray shaded area represents common manifold piping.