Intermatic Timer T101 Digital Timer Instruction Manual
Intermatic Timer T101 Digital Timer
Intermatic Timer T101 Digital Timer
Intermatic Timer T101 Instructions
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Intermatic T101 Digital Timer Specifications
| Specification | Value |
|---|---|
| Model | T101 24 Hour Dial Time Switch |
| Type | Type 1 Indoor Use Only, Single Pole Single Throw (SPST) |
| Voltage Rating | 120/208/240 VAC |
| Frequency | 60 Hz (for clock motor) |
| Resistive / Inductive / Tungsten Load | 40 A @ 120/208/240 VAC |
| Pilot Duty | 1000 VA @ 120/208/240 VAC |
| Motor HP (120 VAC) | 2 HP (24 FLA) |
| Motor HP (240 VAC) | 5 HP (28 FLA) |
| Electronic Ballast | 16 A @ 277 VAC |
| Clock Motor Voltage | 120 VAC |
| Minimum Wire Insulation Temperature | 90°C |
| Conductor Type | COPPER conductors ONLY |
| Terminal Screw Torque | 2-18 in-lbs |
| Min. Copper Wire Size (AWG) / Max. Load | 14 AWG / 15A 12 AWG / 20A 10 AWG / 30A 8 AWG / 40A |
| Motor HP by Wire Size (120V / 240V) | 14 AWG: 1/2 HP / 2 HP 12 AWG: 1 HP / 2 1/2 HP 10 AWG: 2 HP / 3 HP 8 AWG: N/A / 5 HP |
Intermatic Timer T101 Digital Timer Details
The Intermatic Timer T101 is a robust 24-hour dial time switch designed for precise scheduling of electrical loads. Classified as a Type 1 device for indoor use only, it features a Single Pole Single Throw (SPST) configuration, making it suitable for a wide range of applications requiring timed on/off operations, from lighting to general-purpose appliances.
Programming the T101 is straightforward using its unique tripper system. Users simply hold the trippers against the edge of the clock dial, aligning them with the desired ON and OFF times (AM or PM). Once positioned, the tripper screws must be tightened firmly. For applications requiring more than one ON/OFF cycle per day, additional tripper pairs (part number 156T1978A) can be ordered and installed.
Setting the current time-of-day is equally intuitive. To adjust, gently pull the CLOCK-DIAL outward, then rotate it in either direction. The goal is to align the exact current time-of-day on the dial with the fixed time pointer. It's crucial to never move the pointer itself, as this can damage the timer's internal mechanism and affect its accuracy.
Manual operation is available for overriding programmed schedules without affecting subsequent operations. A convenient MANUAL LEVER located below the clock dial allows users to move the switch left or right, as indicated by arrows, to instantly turn the connected load ON or OFF. In the event of a power failure, the timer retains its programming but the clock-dial must be manually reset to the correct time-of-day to maintain accurate scheduling.
Installation safety is paramount. Before any wiring or servicing, it is essential to disconnect power at the circuit breaker or disconnect switches. All wiring and installation procedures must strictly adhere to national and local electrical code requirements. The timer is designed exclusively for COPPER conductors with a minimum insulation rating of 90°C. Wire ends should have 1/2 inch of insulation removed, and terminal screws must be tightened firmly between 2-18 in-lbs to ensure secure connections.
Beyond its general timing capabilities, the T101 also serves as a specialized control device for swimming pool pumps and heaters. This particular feature incorporates a "Fireman" switch, whose contacts are typically closed at all times, except for a 20-minute period before the pump is scheduled to turn OFF. This clever design prevents the heater from operating during the final circulation phase, promoting efficiency and safety.
The heater control is specifically engineered to allow the water to circulate for 20 minutes without heat, ensuring proper cooling. Furthermore, it enables a remote override function, allowing users to operate both the pump and the heater simultaneously from an external location without manually engaging the timer. This provides significant operational flexibility for pool owners.
For those utilizing the T101 (or T104) as the sole control for a pool pump and heater, an additional 156T4042A Heater Control Switch Kit can be installed on the time switch plate. This accessory ensures that the heater only operates when the Time Switch contacts are closed, either automatically via programming or manually. It's an important consideration for integrated pool system management.
It is critical to note that this specific type of heater control functionality should not be used as a substitute for a pressure or flow switch within the heater control circuit. These safety devices serve different, vital functions in heater protection. Always ensure your setup complies with all safety standards and local regulations.
Frequently Asked Questions (FAQs)
Can't find the answer you need? Here are some frequently asked questions about the Intermatic Timer T101 Digital Timer, and we answer them below.