Greenheck Fan Ep Switch Users Manual

EP Switch to the manual 8dcf10d9-93bf-4fcd-b7fb-91d2872fba48

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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
		 120 Vac

1

6
3
2
4

7
5

8

Item	 Qty.	Part #	 Description	

Kit #

	 1	
1	
-	
Valve 1⁄8" NPT
	 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
Kit #s include appropriate voltage solenoid valve shown
under Item 3 and all other Item #s above.

9

Typical Setup
Port 3
Exhaust

Solenoid Va lve With RRL

TOR/RRL
Wiring
Har dware

ASCO Solenoid
Va lve Assembly

Port 1

Port 2

To Actuator

Supply

Solenoid Valve
Red

RRL
Orange

Red

Black

Solenoid Va lve With TOR
Solenoid Valve

Red
Red

TOR
Brown
Orange
Black
Blue
Red
Purple
Yellow

Red
Red

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



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