Carrier 42BVC, 42BHC manual WAY Motorized Valve Electric

PIPING COMPONENTS (cont)

SYMBOL/SKETCH	DESCRIPTION		CV FACTOR			RATING
		1/2		3/4	1	PSI	F
	2-WAY MOTORIZED VALVE: Electric
	2-position flow control valve (open/closed).	3.5		5.0	8.0
	Normally closed body with manual override
	lever. Installed in supply line to unit.
	Application — All standard control and valve	SPRING RETURN
	packages are based upon normally closed
	valves (valve electrically powered open and					300	200
	closed by spring return when electric power
	removed). Manual override lever allows valve	3.5		4.6	6.6
	to be placed in the open position for second-
	ary (unit) flushing, constant water flow prior to
	start-up, etc. Manual override is automatically
	disengaged when valve is electrically acti-		POWER ON/OFF
	vated. Consult factory for normally open
	valve applications.
	3-WAY MOTORIZED VALVE: Electric
	2-position flow control valve (closed to coil/	4.0		5.0	8.0
	open to bypass or open to coil/closed to
	bypass). Normally closed with manual over-
	ride lever. Installed in supply line to unit.
	Application — Same comments as 2-way	SPRING RETURN
	motorized valve except with manual override					300	200
	lever engaged the valve is open to both ports
	and water flow will take the path of least resis-	3.8		5.9	9.0
	tance through the valve package (not neces-
	sarily 100% through the coil).
			POWER ON/OFF

LEGEND

Cv — Coefficient of Velocity

DX — Direct Expansion

NOTES:

1.Motorized spring return 2-way valves have a maximum close-off differential of 25 psi.

2.Motorized spring return 3-way valves have a maximum close-off differential of 25 psi.

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