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How
to wire THC 15 timer Search waterheatertimer.org / all results Search with google Search using
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 THC 15
timer12-24-120 and 240 Volt 50/50 Hz 1 NO 1 NC 17 on-off each week Buy: THC 15 timers THC 15 120 volt THC15A 120 volt THC15A 240 volt 12 V DC Manual: THC 15 manual Sell sheet |
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How to wire THC 15 timer
Timer controls light bulb and contactor Buy: 2-Pole 40A contactor 120Volt coil 40 amp 240Volt coil 24 volt coil Resource Contactors Select wire and breaker size |
 Timer
controls 3-pole contactorBuy: THC 15 timers THC 15 120 volt Manual: THC 15 manual Add 10 amp line fuse to wires that connect to timer. Line fuse will protect 15 amp timer |
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Timer controls light bulb and 3-pole contactor Resources: 3-pole Contactors Select wire and breaker size |
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 Geyser, Onesto, Fatco Larger image Geyser timer/ 230 volt 7-day Same as Onesto and Fato on right Manuals/ Resources: Geyser timer sell sheet Possible Geyser timer manual How to wire timer |
 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 24 volt, and also 120 and 240 volt models. When the din rail timer is OFF, it turns ON a twin timer. When the din rail timer is ON, the twin timer is OFF. One of the 24 volt wires from thermostat is connected to the com terminal on the din rail timer. When timer is ON, the 24 volt thermostat circuit is routed straight to the contactor for normal operation of air conditioner. When the din rail timer is OFF, it switches the 24 volt thermostat wire away from contactor and to the Twin timer. The twin timer is rated for either 24 volt (also available in 120 and 240V). 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. |
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Illustration
on right shows similar diagram with one above except pulling power off the 240 volt AC
circuit, and using a relay. When pulling power off the 240V air conditioner, use 10-15 amp inline fuse to protect timer and relay 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 Uxcell DH48S-S twin 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 |
  | Din-rail mount fuseholder Busman panel mount line fuse holder Fuse protects timer from overamperage Timer has max rating 15 amps. To protect timer, install 5-10 amp fuse Buy: 10x38mm din-rail mount fuseholders 10 x 38 mm fuse 14x51mm din rail mount fuseholder 14 x 51mm fuse  Buy: Panel mount fuse holders at Amazon ANL fuseholder Fuse blocks at Amazon Din rail fuseholder 10 x 38 mm fuse Ceramic fuses at Amazon Fast acting ceramic fuses Electrical terminals Solder guns Resources: Terminals/ Yellow for 12 gauge/ Blue for 14 gauge Must solder solid copper wire when using fuseholder or terminal. Must solder stranded wire when using fuseholder. Stranded wire can be crimped to terminal. How to solder wire to fuseholder or to terminals. Put wire in place. Place hot tip on wire. Wait for wire to heat. Touch solder to hot wire. Solder melts. Withdraw solder. Withdraw hot tip. |
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Fuse holder - timer - contactor |
 MTD8 timer Larger image Image of buttons | Misc
Manuals/
Resources: MTD8 timer manual How to wire timer tddgt-manual.pdf Onesto PST20A manual Toptronic tddgt manual Toptronic timer manual Fato timers Fato ACH15A manual DCH15 timer manual |
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Add several layers of control using twin timer, delay
timer and 24-hour or 7-day timer Image show test wiring Buy Din rails THC 15 timer AH3 delay timer Indicator lights Resources: How to wire delay timer How to wire din rail timers + manuals |
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contactor wiring: Pull out the disconnect so electricity is OFF. Open wiring compartment on air conditioner. Use terminals to connect the smaller wires to line side of contactor. A capacitor will be connected to Load side of contactor. Use 10-15 amp inline fuse on one of the two wires to protect timer and relay circuit from 50-60 amp air conditioner circuit. The fuse will protect entire length of circuit. 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: HVAC contactors Inline fuse holders Din rail fuse holder Resources: Relays and contactors |
| Enclosures | |
 Larger image 9-3 ⁄8" x 5-1 ⁄2" x 3-5 ⁄8" Enclosures can be used for other electrical devices Shown are several devices mounted to din rail Delay timers will fit if mounted directly to metal box, and not din rail. Buy: 2T511GA Nema3R enclosure at Amazon 10 amp Relays 10 amp LY2 relays LY3 relay 120 volt LY2 15 amp Din rail timer Din rail Fuseholder Resources: Din rail timers Off Delay timers On delay timers |
 Larger image Another image Contactor, open-frame relay, and small relay with base will fit into Intermatic metal and plastic enclosures, but not the Grasslin enclosures Buy: 2T511GA Nema3R enclosure at Amazon Seimens 30 amp power relay 30-40 amp Contactors Resources: Contactors and relays Build a 2-speed motor control |
 Buy Plastic 2T2502GA Nema 3R Outside: 9-3/8x 5-1/2 x 3-3/4 Plastic outdoor beige Buy: 2T2502GA beige at Amazon |
 2T2500GA Plastic Nema 3R Outside: 9-3/8x 5-1/2 x 3-3/4 Plastic outdoor gray Buy: 2T2500GA grey at Amazon |
 2T2485GA Metal Nema 3R Outside: 9-3/8x 5-1/2 x 3-5/8 Rubber seal Standard Metal indoor beige Buy: 2T2485GA at Amazon |
 2T511GA Metal Nema 3R Outside: 9-3/8x 5-1/2 x 3-5/8 Rubber seal Standard Metal outdoor gray Buy: 2T511GA at Amazon |
 Contactors/ relays |
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