Quick Start Guide
Precut your jumper wires to these sizes.
4.5” Jumper 1/2” Exposed
7” Jumper 1/2” Exposed
Commonly Used Tools
– Flat Head Screwdriver
– Hammer
– Wire Cutter/Stripper
What are the connections?
Power Dip Switch
Orange Wire Nut
for ground wire
* not included
MINIMUM
COPPER
WIRE SIZE
(AWG)
14
12
10
8
Figure 1 – Use chart to decide which size jumper is best for
your application.
LOAD
(AMP)
15
20
30
40
INSUL-
ATION
TEMP(°C)
60
60
60
105
PRESSURE PLATE
TERMINAL SCREW
MAKE SURE WIRE
INSULATION CLEARS
PRESSURE PLATE
MIN.
MAX.
Relay 1: SPDT
NC, NO, COM
Timer Motor Connections: 120VAC to 277VAC.
Relay 2: SPDT
NC2, NO2, COM2
Let’s look at an example hookup where the clock and load connection are 120VAC.
Denitions of Terms:
• COM contact is switched between the NO and the NC contacts. This is not “AC Common”
or neutral.
• Normally-open (NO) contacts connect the circuit when the relay is activated; the circuit is
disconnected when the relay is inactive.
• Normally-closed (NC) contacts disconnect the circuit when the relay is activated; the circuit
is connected when the relay is inactive.
• SPST - Single Pole Single Throw. These have two terminals which can be connected or
disconnected.
• SPDT - Single Pole Double Throw. A common terminal connects to either of two others.
• DPST - Double Pole Single Throw. These have two pairs of terminals. Equivalent to two
SPST switches or relay.
• DPDT - Double Pole Double Throw. Equivalent to two SPDT switches or relay.
SPST
SPDT
DPST
DPDT
Do NOT use this for removal!
For 1/2” knock out place small
blade screw driver as pictured. Tap
lightly to punch “knockout” loose.
The following steps show the two most common connections seen in a residence.
For 3/4” “knockout” rst use screwdriver to punchout 1/2” “knockout”
then use pliers to remove outer ring.
120VAC Setup
Make sure you turn off power at the circuit breaker before touching any wires.
*If you are not comfortable installing this product please contact a certied electrician.
Step 1: Connect the Clock Motor Voltage
Dip switch set
for 120 Volts.
The neutral and hot must be connected to “timer” contacts. The dip switch is set to match the input voltage. In this case it is set for 120VAC (all switches ON or to the Left).
Step 2: Connect Power to the Relay
Power to the relay common must be made on the connector block. It is not connected internally. Here,
the 120V Hot is tied to the Relay 1 Com input. This common input will be switched between the NC and
NO contacts of the relay. (This is not to be confused with the neutral or “AC Common” line.)
Step 3: Complete the circuit to the load.
Return side of load to neutral. This
connection may or may not be
made inside timer box, but must
be made.
Hot from NO contact to Load
Here, the load is connected to the NO side of relay. This means the load is not normally on. It will come
on when the Timer “On” time is reached as set by the dial.
*The Green or “Ground” wires from the input and load should be connected together with the wire nut
tucked inside the box.
Activate Timer
* After wiring and setting of the timer, be sure to set the red rocker switch to the “timer” position to
activate the timer.
* Please review “Operating Instructions” in the user manual.```
240VAC Setup
Make sure you turn off power at the circuit breaker before touching any wires.
*If you are not comfortable installing this product please contact a certied electrician.
Step 1: Connect the Clock Motor Voltage
The two hot lines (L1 & L2) must be connected to the “timer” contacts. The dip switch is set to match
the input voltage. In this case it is set for 240VAC (Positions 2 & 3 On and 1 & 4 off).
Step 2: Connect Power to the Relay
L1 tied to Relay 1 COM input
L2 tied to Relay 2 COM input
Power to the relays commons must be made on the connector block. It is not connected internally.
Here, L1 is tied to the Relay 1 Com input. L2 is tied to Relay 2 Com input. The lines will be switched
between the NC and NO contacts of the relay. (Relay Common is not to be confused with “AC
Common” or with Neutral.)
Step 3: Complete the circuit to the load.
Hot (L1) from NO contact to Load
Hot (L2) from NO contact to Load
Here, the load is connected to the NO side of relays. This means the load is not normally on. It will
come on when the Timer “On” time is reached as set by the dial.
*The Green or “Ground” wires from the input and load should be connected together with the wire nut
tucked inside the box
Activate Timer
* After wiring and setting of the timer, be sure to set the red rocker switch to the “timer” position to
activate the timer.
* Please review “Operating Instructions” in the user manual.
For technical assistance please visit our website:
www.jascoproducts.com/timer
or call our technical support at
800-654-8483 press option 4 for any questions.
Jasco Products Company
10 E. Memorial Road
Oklahoma City, OK 73114
Made in China 10/09
15132
15087
15207
56922
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