Greenheck Fan EP Switch manual Ep switch, Assembly, Typical Setup, Vdc / 24 Vac / 120 Vac

Ep switch

24 Vdc / 24 Vac / 120 Vac

Application & Design

An electro-pneumatic (EP) switch, also known as a three way solenoid valve, is used to electrically open and close a pneumatic actuated damper. It is wired in series with a normally closed thermostat when used with a fire smoke damper (FSD) to initiate closure at elevated temperatures. The EP switch can also be used on a smoke damper (SMD) to initiate closure when required in a smoke control system.

Assembly	Input Signal:	24 Vdc
	(specify)	24 Vac			1
		120 Vac
					6
		3
	2
	7				4
		8		5
		Item Qty.		Part #	Description	Kit #
		1	1	-	Valve 1⁄8" NPT
	9	2	1	-	Retaining Clip
		3	1	452460	S/V 120 Vac	812441
		-	1	380913	S/V 24 Vac	812442
		-	1	381042	S/V 24 Vdc	812443
		4	1	651371	Mounting Bracket
		5	1	380850	2 x 4 x 1.875 Ext. Box
		6	2	415555	#10 x 0.50 TEK Screw
		7	1	380257	2 x 4 Blank Cover
		8	1	415539	#10-32 HH Grounding
					Screw (green)
		9	1	454850	Label

Typical Setup	Kit #s include appropriate voltage solenoid valve shown
	under Item 3 and all other Item #s above.

Port 3

Exhaust

ASCO Solenoid Va lve Assembly

Port 1

To Actuator

TOR/RRL

Wiring

Har dware

Port 2

Supply

Red

Red

Solenoid		Va lve With RRL
Solenoid Valve			RRL
	Red		Orange
	Red		Black
Solenoid		Va lve With TOR
Solenoid Valve			TOR
			Brown
			Orange
	Red		Black
	Red		Blue
			Red
			Purple
			Yellow

Copyright © 2007 Greenheck Fan Corporation EP Switch Rev. 3 May 2007