Installing an Intermatic T104 timer is a great way to dramatically reduce run time and energy costs. This is a guide on how to install the T104 timer. Note, timers vary with supply voltage. A T104 timer is used for 230V supply voltage. If you are using 115V supply voltage, you will need a T101 timer. The installation steps are the same for either.
1. Open up the T104 box and remove the black plastic insulator. The insulator is held in place by one screw.
2. Locate an area on the wall near the pool equipment for the timer box. Locate the timer out of reach of the sprinklers or drainage spouts.
3. Mark the locations for the three mounting screws. One is located on top of the timer box and two are located inside the timer box towards the bottom.
4. Drill three holes where the mounting screws will be installed. Note: We used a special 3/16" carbide drill bit to drill into the concrete.
5. Install screws (or other hardware appropriate for the mounting surface) through the mounting holes of the Intermatic T104 timer box. Note: We used 1/4" x 1-1/4" hex head concrete anchors. Hex head anchors are recommended for better traction when installing into concrete.
6. Remove two of the knockouts from the timer box. One knockout will lead to the breaker panel and the other will lead to the pool equipment.
7. Thread a 1/2" mpt terminal adapter into the knockouts on the timer box.
8. Your next step is to wire the power from the breaker panel to the pool timer. When wiring, be sure to follow local and NEC/CEC electrical codes. CONTACT A PROFESSIONAL ELECTRICTIAN IF YOU ARE UNCOMFORTABLE WORKING WITH POWER. Incorrect wiring can cause dangerous shocks and may void your warranty.
9. TURN OFF THE POWER AT THE BREAKER PANEL.
10. Measure the distance from the breaker panel to the timer box. Cut a piece of 1/2" electrical conduit to match this distance.
11. Feed the three cables from the breaker panel through the conduit and into the Intermatic timer box.
12. Press the conduit into the terminal adapter.
13. Connect the ground wire to the green screw located on the Intermatic timer mechanism. The ground wire will be green or exposed copper.
14. Locate the two input power cables that come from the breaker. Connect one to terminal 1 and the other to terminal 3. Terminals 1 and 3 are called the "Lines". Note: it does not matter what color goes to 1 or 3. It only matters that one cable is on 1 and the other is on 3.
15. The next steps will involve connecting the equipment to the timer.
16. Measure the distance from the equipment to the timer box. Cut a piece of 1/2" electrical conduit to match this distance.
17. Feed the three cables from the equipment through the conduit and into the Intermatic timer box.
18. Press the conduit into the terminal adapter.
19. Connect the ground wire to the green screw located on the Intermatic timer mechanism. The ground wire will be green or exposed copper.
20. Connect the cables running from the equipment to terminals 2 and 4. One cable will go to teminal 2 and the other to terminal 4. Terminals 2 and 4 are called the "Loads". The Loads are what the timer controls. Note: it does not matter what color goes to 2 or 4.
21. Place the black plastic insulator back into the box and tighten the screw to keep it in place.
22. The next steps will involve programming the timer.
23. There is a silver Time Pointer on the Clock-Dial. This Time Pointer will point directly to the current time.
24. To set the time, pull the Intermatic Clock-Dial outward. Turn the dial in either direction and align the exact time of day on the Clock-Dial to the Time Pointer. The picture displays the timer set to 12:00 pm.
25. The next steps will demonstrate how to set the trippers. The trippers will determine when the equipment will turn on and off.
26. Locate the "On" tripper. The "On" tripper is typically green and will be labeled "On".
27. To set the "On" tripper, hold the tripper against the desired time and tighten the tripper screw firmly. The picture displays the "On" tripper set at 8:00 am.
28. Locate the "Off" tripper. The "Off" tripper is typically gold and will be labeled "Off".
29. To set the "Off" tripper, hold the tripper against the desired time and tighten the tripper screw firmly. The picture displays the "Off" tripper set at 4:00 pm.
30. Turn on the the power at the breaker panel.
31. The Intermatic T104 Series Timer should now be successfully installed. The yellow clock dial should be spinning and the equipment should turn on and off at the set time. Close the timer door and enjoy the energy savings with using a timer.
If you have any other questions about pool and spa products please do let us know - we are here to help!