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 ST01 and Ei600 timers 7-day programmable Battery operated 12- 24 volt AC or DC load 120-240 volt AC Buy: Intermatic ST01c timer |
 THC din rail timer 7-day programmable 12-24-120-240 volt AC operation Buy: THC 15 timers Resource: How to wire Din rail timers |
 FM1 grasslin/ and Deihl 24 hour analog timer 24-120-240 volt AC Buy: FM1STUZ/ 24-120-240 Volt FM1SWUZ/ 24-120-240 Volt Deihl 24 volt Resource: All FM timer modules |
 CN101 timer 7-day programmable 24 volt AC DC 120-240 volt AC Buy: CN101A 12 volt DC 12 volt AC 24 volt |
 Twin timer and one-shot timer Repeat cycle twin timer, one-shot timer 24-120-240 volt AC 12-24-120-240 volt AC or DC Buy: Twin timers at Amazon Sestos twin timer Omron DH48S twin timers Resource: How to wire twin timers How to wire off delay timers How to wire one-shot timers |
 AH3-3 delay timer and base 12-24-120-240 volt off delay timer/ 0-60 minutes Buy: 120 volt AH3-3 at Amazon Resources: How to wire AH3-3 timer How to wire H3CR timer |
 ICM 102 on-delay timer 0 Hp Must use contactor 19-240 volt AC Buy: ICM 102 Dayton off delay timers Resource: Use off delay to control motors |
 Buy Model 6a859 15 seconds to 300 seconds Model 6a858 3 seconds to 60 seconds Dayton off delay timers Resource: How to wire Dayton off delay timer |
 12-24-120-240 volt digital twin timer Buy Uxcell DH48S-S twin timer Resource: DH48S twin timer manual Override air conditioner with timer |
Twin timer and one-shot timer Repeat cycle timer 24-120-240 volt AC 12-24-120-240 volt AC or DC Buy: Twin timers at Amazon Sestos twin timer Omron DH48S twin timer Resource: How to wire twin timers |
 Reduce run-time of air
conditioner.Problem: air conditioner runs too much during peak electric prices. Programmable thermostat for the air conditioner can control peak usage by raising temperature and reducing hours of operation during peak times, but it cannot be programmed to limit actual number of run-time minutes per hour. This diagram solves problem without compromising integrity of AC motor or equipment. The din rail timer is programmed so timer is ON during peak hours. Any programmable timer will do the job but din rail timers are available in both 120 and 240 volt models. And 12-24 volt also. When the din rail timer is ON, it turns ON a relay, and turns ON a twin timer. When the din rail timer is OFF, the relay is OFF and the twin timer is OFF. One of the 24 volt wires from thermostat is connected to the com terminal on one side of relay. When the din rail timer is OFF, the relay is OFF, and the 24 volt thermostat circuit is routed straight to the contactor for normal operation of air conditioner. When the din rail timer is ON, the relay is ON, and it switches the 24 volt thermostat wire away from contactor and to the Twin timer. The twin timer is rated for either 120 or 240 volt. Twin timer is designed to turn on-off-on-off-on-off in endless repeat cycle. ON times and OFF times are set independently, and can be any value between .01 second and 99.99 hours. For example, the twin timer ON time can be set for 40 minutes. And OFF time set for 20 minutes. This limits the operation of air conditioner to 40 minutes. During the 40 minute period, the twin time routes 24 volts to the air conditioner contactor for normal operation. After 40 minutes, the twin timer cycles OFF, and then air conditioner cannot turn on for 20 minutes until the twin timer cycles back ON again. When the 20 minutes expires, the twin timer again lets the 24 volts complete circuit to contactor for 40 minutes. The cycle of 40 ON and 20 OFF continues as long as din rail timer is ON. Set the din rail timer to turn ON during peak electric prices. Illustration on right shows same diagram except pulling power off the 240 volt AC circuit. Use 10-15 amp inline fuse to protect timer and relay circuit from 50-60 24-volt-programmable-timer.html  amp
air conditioner circuit. Use terminals to connect the smaller wires to
contactor. Prevent loose connection and risk of fire: Do not put two
different gauge wires under the screw plate on contactor. Never put
stranded wire under screw plate.Buy: 120-240 volt THC15 din rail timer 120 volt LY2 relay 240 volt relay 120-240 volt Twin timer HVAC contactors Inline fuse holders Din rail fuse holder 120Volt contactor 40 amp 240Volt contactor Resources: How to wire twin timer Din rail timers and manuals Relays and contactors |
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THC 24 volt timer Use 24 volt timer to control AC contactor or Relay Buy: THC 15 timers Resources: Din rail timers and manuals Relays and contactors DC relays |
Larger image  ST01 uses CR2 battery |
Why
are ST01 and Ei600 timers 24 Volt AC or DC Because the timer is battery-operated. Battery lasts 2-3 years. Because the timer does not need to be connected to 120 Volt AC or 240 Volt AC power to operate. Just the battery is needed Timer can be located inside electric box, anywhere outdoors-or-indoors. Buy: Intermatic ST01c timer/ 1 year warranty ST01a almond ST01a almond Intermatic ST01K combination timer Ei600 5-year warranty timer at Amazon CR2 replacement battery at Amazon Resources: How to program and wire ST01 timer Use ST01 as 24 volt photoeye Load ratings for Intermatic timers/ pdf Load rating for ST01 timer: 120V ac, 6A, 208-277V ac; DC Loads 4A 12V dc, 2A 28V dc; Motors 1HP 120VAC, 2HP 240V ac, Ballast 16A 120V ac, 208-277V ac; Resistive 20A 120-277Vac. |
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 How to wire 24 volt ST01 timer Connect 24 V AC to black wire Connect Load to Blue wire Cap off Red wire (red and blue connected, reverses timer programming) Buy: Intermatic ST01c timer/ 1 year warranty ST01a almond Resource: How to program and wire ST01 timer LED display is not illuminated |
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 Override thermostat?Add more programs to control furnace? Use ST01 without any voltage, or with any voltage I cannot say exactly which HVAC or thermostat wires you connect this to ../ for example the AC control board sends 24 volts to a contactor ... you can limit the times when the AC runs by cutting one of the wires, and insert ST01 as shown., but a programmable thermostat can do same job. It might be possible to overide the thermostat operation and turn power ON when thermostat calls for off. The wire to ST10 does not need power, or it can have 12-24 AC/DC or 120, 208, 240, 277 volt AC. Timer red wire is capped. ST01 is programmable, or dusk-dawn timer. Dusk-dawn means timer is ON at night. Choose up to 6 on-off programs, or choose dusk-dawn. (either-or, not both) If you connect timer red and blue wires together, then timer programming is reversed, so timer is ON in day and OFF at night, or timed programs are inverted. Buy: Intermatic ST01c timer at Amazon/ 1 year warranty |
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 Testing the ST01 timer |
Other
uses for ST01 timer: ST01 timer controls water heater or any 240 volt load Reverse ST01 using Intermatic air switch / Resource: Intermatic air switches Use ST01C for 4-way timer ST01 24 volt DC photoeye Convert single-pole switch into 3-way switch using ST01/ Resource: How to add a switch How to add 3-way switch Turn off doorbell certain hours of day Override any hardwired timer Override any electric circuit Wire into z-wave circuit Control water heater |
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Larger image/ amico timer with dust cover |
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CN101 timer wiring  CN101A timers at Amazon |
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 24 volt Grasslin-Intermatic FM1
timer and
Diehl
880 TA-series timerSPDT with NO NC terminals Buy: 24 hour/ Diehl 24 VAC timer module at Amazon Resources: Dieh 880 instruction manual 880 wiring 880 wiring How to set timers |
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 FM1 Grasslin/ and Deihl 24-120-240 volt AC Buy: FM1STUZ/ 24-120-240 Volt FM1SWUZ/ 24-120-240 Volt Deihl 24 volt |
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 Larger image FM1 timer module Resources FM1 timers / manuals / wirings FM1 Model numbers FM1 series manual + model numbers/pdf Newest FM1 sell sheet How to set timers |
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hour Buy 24 hour no override/ no carryover: FM1STUZ/ 24-120-240 Volt timer models Buy 24 hour WITH override/ no carryover: FM1STUZH/ 24-120-240 Volt timer models Battery-carryover models Buy 24 hour with override/ with carryover: FM1QTUZH/ 24-120-240 Volt timer models Buy 24 hour no override/ with carryover FM1QTUZ/ 24-120-240 volt timer models |
-----------------------7-day Buy 7-day no override/ no carryover: FM1SWUZ/ 24-120-240 Volt timer models Buy 7-day WITH override/ no carryover: FM1SWUZH/ 24-120-240 Volt timer models Battery-carryover models Buy 7-day no override/ with carryover: FM1QWUZ/ 24-120-240 Volt timer models Buy 7-day WITH override/ with carryover: FM1QWUZH/ 24-120-240 Volt timer model |
 MIL72E series flush 24 hour/ 7-day flush mount Resources MIL series timers and manuals Sell sheet with model numbers/ wiring |
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hour Buy 24 hour no override/ with carryover: MIL72EQTUZ/ 120-240V timer models Buy 24 hour with override/ with carryover: MIL72EQTUZH/ 24-120V timer models Buy 24 hour no override/ no carryover: MIL72ESTUZ/ 24-120-240V timer models Buy 24 hour with override/ no carryover: MIL72ESTUZH/ 24-120-240V timer models MIL72ESTUZH timer |
-----------------------7-day Buy 7-day no override/ with carryover: MIL72EQWUZ/ 120-240V timer models Buy 7-day with override/ with carryover: MIL72EQWUZH/ 24-120V timer models Buy 7-day no override/ no carryover: MIL72ESWUZ/ 24-120-240V timer models Buy 7-day with override/ no carryover: MIL72ESWUZH/ 24-120-240V timer model |
 MIL72A series surface 24 hour/ 7-day surface mount/ din rail Power carryover option 24-120-240 volt Resources MIL series timers and manuals Sell sheet with model numbers/ wiring |
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hour Buy 24 hour no override/ with carryover: MIL72AQTUZ/ 120-240V timer models Buy 24 hour with override/ with carryover: MIL72AQTUZH/ 24-120V timer models Buy 24 hour no override/ no carryover: MIL72ASTUZ/ 24-120-240V timer models Buy 24 hour with override/ no carryover: MIL72ASTUZH/ 24-120-240V timer models |
------------------------7-day Buy 7-day no override/ with carryover: MIL72AQWUZ/ 120-240V timer models Buy 7-day with override/ with carryover: MIL72AQWUZH/ 24-120V timer models Buy 7-day no override/ no carryover: MIL72ASWUZ/ 24-120-240V timer models Buy 7-day with override/ no carryover: MIL72ASWUZH/ 24-120-240V timer models |
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GM 40 timer is NOT rated for DC voltage,
but can switch 24 DC volt line Wire GM40 timer to control DC motor: Use same diagram to control any single-phase voltage. Buy: Omron-DC-Power-Relay Resource: DC relays How to wire GM40 timer |
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Resource: Compare box timers DPDT timers Intermatic Control water heater w/ Z-wave |
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Resource: Intermatic control centers: and parts Digital control centers and parts Tork control centers and parts Subpanels All control centers and parts Enclosures |
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Resource: Programmable timers Countdown timers Off delay timers On delay timers Timer modules Din rail Twin & one-shot Woods Intermatic Tork |
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Recirculation systems |
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