Lochinvar CW 645, CW 745 manual Piping Diagram, L E G E N D, Two Heaters-Twotanks

PIPING DIAGRAM TWO HEATERS-TWO TANKS

	COLD WATER
	SUPPLY
	LOCHINVAR
	WATER HEATERS
	OUTLET
BUILDING	RELIEF
	VALVE
HOT WATER
	INLET
SUPPLY
LOCK-TEMP	OUTLET
STORAGE
TANKS

DRAIN

Gray shaded area represents common manifold piping.	BUILDING
	RETURN

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”

This illustration is for concept only and should not be used for any actual installation without engineering	LIT0451
or technical advice from a licensed engineer. All necessary equipment may not be illustrated.

L E G E N D

FULL PORT BALL VALVE

SYSTEM

PUMP

SYSTEM

RELIEF VALVE

TEE

ELBOW

UNION

EXPANSION

TANK

CHECK VALVE

THERMOMETER

REDUCING

TEE

REDUCING

TEE

Lochinvar 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 615-889-8900 A5