Question about Hardware & Accessories
Posted by Anonymous on
Hello, Having the same power supply voltage to the coil of the relay, pin 7, and also the thing you want to stay on for more seconds, pin 8, will not work. When you kill the power to the relay the other thing will go off right away as well and a few seconds later, you will hear the relay switch. I made a diagram to show how it works to have a solenoid valve close 30 seconds after the water pumps stops. This is to let the water slow down before the valve closes to prevent water hammering.o,
Posted on Jan 23, 2015
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Posted on Jan 02, 2017
SOURCE: I have a Et 70115C
A) 5 terminal ET70115C.
Voltage selector set to 240.
B) BUT you say you have 120Volts from breaker >>> confusing, so I'm proceeding on basis that you meant to say 240V from breaker.
Add a comment at any time.
C) Review timer:
5-terminal ET70115 timer has NO and NC terminals
NC is normally closed >> this terminal has power when timer is OFF
NO is normally open >> this terminals has power when timer turns ON
For water heater, you want NO terminal 4 so water heater turns ON when timer turns ON
D) Wire for 240Volt water heater
Two hot wires from breaker connect to terminals 1 and 2. This powers timer clock.
Jumper wire connects between terminal 2 to terminal 3. This sends power to the switch circuit.
Wires to water heater connect to terminals 1 and 4
E) 5-terminal timer turns off 1 hot wire to 240V water heater.
Turning off 1 hot wire will stop 240V circuit from working; Water heater thermostats also turn off one hot wire.
240V water heater has black and red wire.
Wire from terminal 4 should connect to Black wire on water heater.
Diagram shows two wires on terminal 1
Two wires on terminal 2
One jumper wire on terminal 3
One wire on terminal 4
Zero wires on terminal 5
Posted on Dec 03, 2010
You have 120Volt 8-pin off-delay timer.
When you put power to terminals 2 and 7, test which other pins are energized.
120Volt Black Hot wire usually goes to terminal 7 and Neutral white wire goes to terminal 2.
As general rule the other terminals are dry and receive no voltage when timer is energized at terminals 7 and 2.
This means you must add a jumper wire from your Hot wire on terminal 7 to the Com terminal 8. This action will energize both Com terminal 8 and NC terminal 5. So test if 5 and 8 have continuity when timer is off. And test if both are powered when Com terminal is energized.
Then when timer activates, NC terminal 5 will no longer receive power from Come terminal, and NO terminal 6 receives power instead.
Copy following link for general illustrations that may apply to your timer and application:
Posted on Aug 05, 2012
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