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24 volt programmable timer

ST01 and Ei600 timers
7-day programmable
Battery operated
12- 24 volt AC or DC load
120-240 volt AC
Buy:
Intermatic ST01c timer
AHC15A 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
Twin timer and one-shot timer
Repeat cycle timer
24-120-240 volt AC
Buy:
Twin timers at Amazon
Omron twin timers

Resource:
How to wire twin timers
override air conditioner with timerReduce 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 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

Resources:
How to wire twin timer
Din rail timers and  manuals
Relays and contactors
THC 24 volt timer 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
ST01C           
          Larger image             

CR2 battery  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.


How to wire 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
ST01 timerOverride 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

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
CN101A timer wiring
Larger image/ amico timer with dust cover
CN101A timer
Amico panel mount timers
24 volt AC timer
Programmable feature/ 7 day / 17 on-off settings
Countdown feature/ 1 second to 99 minutes
Pulse feature/ 1 second to 99 minutes
3 year power reserve


Buy from my associate links:
24 volt AC timer
24 volt DC timer/ control voltage 24VDC / relay rated 16 amp 250VAC/ relay can control 24VDC r
Amico 120 volt 7-day timer
12 Volt/ 16 amp/ DC timer at Amazon
24 Volt/ 16 amp/  DC timer at Amazon
Dust cover for Amico timers at Amazon
Amico timers at Amazon
Transformer: 120-240 Volt to selectable DC voltage
dust cover for amico timer
Dust cover
Resources:
CN101A/ amico timer manual/ pdf with wiring
How to wire amico timer
Terminals
CN101 timer wiring24 volt timer
CN101 wiring
CN101A timers at Amazon
Deihl 880 FM-1 timerGrasslin-Intermatic FM1 timer and Diehl 880 TA-series timer
SPDT 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
FM-1 24 volt timer

FM1 Grasslin/ and Deihl
24-120-240 volt AC

Buy:
FM1STUZ/ 24-120-240 Volt
FM1SWUZ/ 24-120-240 Volt
Deihl 24 volt
Intermatic FM1 timer
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
-----------------------24 hour
FM1-timer
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
FM1-timer
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 timer
MIL72E series flush
24 hour/ 7-day flush mount
Resources
MIL series timers and manuals
Sell sheet with model numbers/ wiring
-----------------------24 hour
MIL72E timer
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
MIL72E timer
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
Intermatic MIL series
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
-----------------------24 hour
MIL72A timer
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
MIL72A timer
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
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

Support the economy:
Buy water heaters from my associate links:

50 gallon Gas water heaters at Amazon
40 gallon gas water heaters at Amazon
50 gallon Electric water heaters at Amazon
40 gallon electric water heaters at Amazon
Hybrid / heat pump/ water heaters at Amazon

Resources:
How to install gas water heater
How to install electric water heater
Troubleshoot gas water heater
Troubleshoot electric water heater
Point of use water heaters
Resources:
Troubleshoot Gas valves with manuals
Icon gas valve

How to replace water heater element Waste King disposal
How to wire tankless electric


Install point of use water heater
Titan tankless

Contactors/ relays
Install and troubleshoot garbage disposal Waste King disposal
Programmable timers

Woods timers
surge protection
Anode rods anode rods
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Tankless recirculation
Point of use water heater
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Hayward pool
Pentair pool

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Buy
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SKIL
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Fluke electrical testing
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Campbell Hausfeld air powered
Tekton automotive

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Saws and saw blades
box timers Resource:
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Control water heater w/ Z-wave
Intermatic control centers Resource:
Intermatic control centers: and parts
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programmable timer Resource:
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