Installation
WARNING: DISCONNECT THE POWER TO THE TIMER
AND THE LOADS BEFORE INSTALLING THIS TIMER.
1. Remove the mechanism from the case by depressing
the catch at the top of the case and pulling out. (See
Fig. 2) CAUTION: DO NOT TOUCH CIRCUIT BOARD
COMPONENTS.
2. Mount the timer in the desired location (three holes for
mounting are located on the back). (See FIg. 1).
3. Replace the mechanism in the case.
4. Lift left side of insulation off of retaining post and pivot
it up and away to expose the terminal strip.
5. Strip supply and load wires by removing 1/2” of insula-
tion.(Do not use aluminum wire.) Insert the wire ends
under the proper terminal plates and tighten the
screws firmly. (See Note Below)
6. Locate photo sensor timer input lead (large black cable
at bottom of terminal strip). Strip leads and connect
directly to photo cell or to connecting bell wire (14-18
AWG). Up to 1,000 feet of bell wire may be
used.
CAUTION: make all photo sensor connections
outside of the enclosure.
7. Replace the plastic insulator.
8. Be sure that the battery clip is connected to the battery.
The batteries are factory installed.
9. Place the selector switch in the “MAN” position.
10. Re-apply power to the timer.
11. Wait until the display is lit steadily, then press “RESET” for two seconds. The display will now show: 1’10:00. The timer is now ready
for programming.
NOTE:
For inductive loads (lighting contactors, relays, etc.), it is necessary to install a surge suppressor across the time switch contacts. The
surge suppressor selected must be of the same voltage as the load (contactor or relay coil) being controlled. Use Intermatic part
number as follows:
176ET8A for 24 volt nominal loads - marked 8A
176ET9A for 120 volt nominal loads - marked 9A
176ET10A for 240 volt nominal loads - marked 10A
176ET22A for 277 volt nominal loads - marked 22A
Where excessive electrical noise is generated elsewhere in the load circuit an isolation relay may be required in addition to the surge sup-
pressor or additional surge suppressors may be required on external contacts.
STEP 1. Insert load wire under one side of pressure plate and insert surge suppressor lead under other side of pressure plate.
STEP 2. Securely tighten the terminal screw.
Be certain that the body of the surge suppressor is at least 1/2 inch from the timer switch case. Insert surge suppressor(s) across each con-
tact switching an inductive load. Do not use surge suppressors on both the normally open and normally closed side of the same output relay.
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TIMER POWER
TIMER POWER
BASIC DIAGRAM DOOR LABEL ET716CK
BASIC DIAGRAM DOOR LABEL ET716CK
PHOTO SENSOR CONNECTION
PHOTO SENSOR CONNECTION
(DO NOT APPLY POWER)
(DO NOT APPLY POWER)
General Information (See Fig. 3)
MODE SELECTOR switch has four settings:
“MAN” -The automatic operation is bypassed while in
this position. Load(s) can be manually switched “ON”
or “OFF”.*
“AUTO”-Normal position for automatic operation.
Load(s) can be manually switched “ON” or “OFF”. The
timer will resume automatic operation beginning with
the next set point.*
“SET”-To set or modify the clock, and program.
“REVIEW”-To check the program, or clear entries for
program modification.
ON INDICATOR LIGHT:*
Flashes when the selector switch is set in “REVIEW”
or “SET”.
Glows steadily when normally “open” contacts are
“closed” during automatic or manual operation.
Does not glow when normally “open” contacts are
“open” during automatic or manual operation.
RESET BUTTON:
Resets the microprocessor before programming or to
erase the entire program.
CLEAR BUTTON:
Clears the displayed entry in “SET” or “REVIEW”.
CLOCK BUTTON:
Sets the time of day.
ON AND OFF BUTTONS:*
To enter programming steps for “ON/OFF” set points as well as manually controlling the loads.
*NOTE: If the photo sensor has been connected the load will not switch ON unless darkness is sensed. To check the wiring, tempor-
arily disconnect the photo sensor from the time switch. This will allow the load to be switched ON, regardless of the ambient light
level, by pressing the ON keypad in either MAN or AUTO modes. A built in time delay may cause up to a 2 minute response delay to
sudden changes at Photo Sensor input.
•ET716CK POWER AND LOAD CONNECTIONS
TIMER SCHEMATIC: Turn off power at fuse box or circuit breaker. Use
approved #18 to #14 gauge solid or stranded copper wire.
-2-
Mounting Holes
Knockouts
