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Compare box timers |
 Larger image/ Read about surge protectors |
 Large image of 240 Volt EH40 All Intermatic timers- manuals |
Intermatic EH40
240Volt/ 7-day programmable / 7 programs/ 30 amp for 1 water heater/
external override until next programmed setting/ battery back-up Size A battery located below programming buttons, lasts 3 years Made for resistive loads like water heater/ For inductive motor loads etc see ET1100 and ET1700 series lower on page 30 amp up to 5500 watt non-simultaneous 240Volt/ to check your heater, look at label on side of tank >7-day programmable > 7 TOTAL PROGRAMS > 1 minute minimum on-off times/ Indoor box > Each days of the week can be different > no memory loss with power outage > 3-year back-up battery No repair parts are offered for digital timers > Reset after power surge Warranty support through Intermatic Buy 240 volt/ 7-day: Intermatic EH40 timer 30 amp water heater timers Resources: 240V EH40 manual Figure volts amps watts of water heater How to repair EH40 How to wire EH40 water heater timer  |
 120Volt timer Same appearance as EH40 above |
Intermatic EH10
120Volt 7-day programmable Size A battery located below programming buttons, lasts 3 years >7-day programmable > 7 TOTAL PROGRAMS > 1 minute minimum on-off times/ indoor box > Each days of the week can be different > no memory loss with power outage > 3-year back-up battery. No repair parts are offered for digital timers > Reset after power surge. Warranty support through Intermatic Buy 120 volt/ 7-day: Intermatic EH10 timer Resources: 120V EH10 manual Figure volts amps watts of water heater How to wire 120Volt EH10 water heater timer  |
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WiFi
relay
Woods 50054/ 30-40 amp DPDT Auto detect voltage/ 120, 208, 240, 277 volt Outdoor metal box with 3 knockouts for 1/2" or 3/4", located on sides and bottom. Illustration shows test wire at my house before installation. NO NC terminals/ DPDT WiFi Buy from my links DEWENWILS brand wifi Wifi power switch Woods WiOn contactor DEWENWILS brand wifi Resource: How to wire wifi and install relay |
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Z-wave
contactor 120 - 208 - 240 - 277 volt 40 amp DPST 1 channel operation Range 50' indoor, 100' sight line outdoor. Min temperature 4°F Max temperature 104°F Metal outdoor box/ Nema3R Different brands interoperate with other brands zwave Buy GE z-wave contactor Zwave from GE Zwave from Leviton Zwave from Aeon Zwave from Smartthings Resource GE z-wave manual How to wire z-wave contactor |
 Large image of 240Volt WH40 Same as T104 except with convenient override lever Larger image All Intermatic timers- manuals All T100 series timers |
Intermatic
WH40 208-240Volt /10000watt /40 amp/ DPDT/
24-hour /
override on front of unit 40 amp up to 9000 watt non-simultaneous 240Volt/ to check your heater, look at label on side of tank > 24 hour dial/ add up to 12 sets on-off trippers/ 2 sets on-off trippers arrive with product > 1 hour minimum on-off time/ indoor box Repair parts available. Warranty support through Intermatic Buy 240 volt/ 24 hour: WH40 208-240-277Volt 10000 watt 40 amp T104 208-240-277V (same as WH40 except no external override) Repair parts 156T1978 trippers Replacement trippers Clock motor WG1573 Resources WH40 manual WH40 sell sheet How to operate and set timer List of replacement parts Parts and maintenance How to wire WH40  |
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Nema1 indoor More T100 series timers including pool timers |
Intermatic
T104 series 208-240Volt
/10000watt /40 amp/ DPDT/ 24-hour/ override located inside unit/ choose
T104 indoor box or T104R outdoor metal box, T104P outdoor plastic box More box choices available: See full list of models (sell sheet pdf) Exactly same timer as WH40 except override located inside box 40 amp up to 9000 watt non-simultaneous 240Volt/ to check your heater, look at label on side of tank > 24 hour dial/ add up to 12 sets on-off trippers/ 2 sets on-off trippers arrive with product > 1 hour minimum on-off time/ indoor box Repair parts available. Warranty support through Intermatic Buy 240 volt/ 24 hour: T104 208-240-277V Grey metal indoor box T174 skip a day T174 R outdoor box T104R outdoor box T104P Grey plastic outdoor box T104M mechanism only/ no box T104R3 Beige plastic outdoor box T104P3 Beige plastic outdoor box Buy repair parts 156T1978 trippers Replacement trippers Clock motor WG1573 Resources More T100 series timers including pool timers All available parts T104 manual T100 series sell sheet Complete parts list Pool timers How to set and operate T100 series How to wire T104 series |
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Pool timers and manuals and parts |
 Larger image T170 series All Intermatic timers- manuals |
Intermatic T174 240 volt
series
same as above except with day-skipper Same as T104 above/ except with day-skipper... you can skip any day or multiple days of the week Repair parts available. Warranty support through Intermatic Buy 240 volt/ 24 hour T174 skip a day T174 R skip a day outdoor box Clock motor Replacement trippers Resources: Complete parts list Sell Sheet with model numbers How to wire T170 series/ identical to T104 and WH40 above |
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WH21
/ TL11 / 240volt / 23
amp/ maximum 4500
watt water heater Minimum 1/2 hour on-off times. On trippers cannot be set closer than 2 hours 25 amp controls up to 5000watt water heater SPST 240Volt Red indicator light is ON when Load is ON Replacement parts available/ Unknown warranty support/ Buy 240 volt/ 24 hour: WH21 240Volt 23 amp 156EB1945a replacement trippers WH21 clock motor WG233-18 from Intermatic Manuals/ Resource: WH21 manual Troubleshoot WH21 timer How to wire WH21/ illustration  |
 Larger image Tork EW 103B All Tork digital timers- manuals |
Tork
EW103B 7-day digital Programmable/ 20 set
points per week > 120 Volt or 240 Volt water heater timer > 20 set points per week > each day can be different > 1 minute minimum > Capacitor back-up: no memory loss with power outage No replacement parts are offered/ warranty support through NSI Buy 120-208-240-277 volt/ 7-day: Tork EW103B DPST 120-208-240-277Volt Resources: More EW series 7-day models E-EW100B wiring manual EW100B sales sheet with models and wiring See all Tork timers EW series instruction/programming manual How to wire EW103B  |
 Steel outdoor box Larger image  Plastic outdoor box w/ see thru door More ET series timers |
ET1700 series
/ 30 amp timer/ DPST/ 7-day programmable/ 28 set points (14 ON- 14 OFF) Arrives with default 120Volt, choice of output 120, 208, 240, 277V Set selector switch to 240 for water heater/ can be used for motor loads and water heaters etc Retains programs after power loss/ choice of box types for indoor and outdoor No repair parts are offered for digital timers Warranty support through Intermatic Buy 120-208-240-277 volt/ 7-day: ET1705C/ Steel indoor box/ 30 amp/ 7-day/ SPST programmable/ ET1705CPD82/ Plastic outdoor box w/ see-thru door/ 30 amp ET1705CR/ Steel outdoor box/ 30 amp ET1725C Steel indoor box/ 30 amp / 7-day/ SPST or DPST ET1725CPD82 Plastic outdoor box w/ see thru door/ 30 amp ET1725CR Steel outdoor box/ 30 amp Resources: ET1700 series sell sheet with model numbers and features ET1715C manual ET1725C manual More ET series timers/ including 24-hour ET1100 series, and ET1800 astronomic series |
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ET8000
Series /7-day astronomic or programmable/ 1 or 2 channel/
120-240-208-277Volt/ 1 and 2 channel models/ programs held in memory
with power loss 7-day astronomic dawn-dusk timer/ or 28 ON and 28 OFF setpoints 2 channel timer means 2 independent circuits can be operated with separate programs for each/ 1 channel means timer can operate 1 circuit with same program Sunset ON and programmed OFF options Selectable voltage 120 thru 277 volt 30 amp. Warranty support through Intermatic Buy; ET8015C/ steel indoor box/ 30 amp/ SPST / 1 channel/timer ET8015CR/ steel outdoor box/ 30 amp Intermatic ET8215 timer Resources: ET 8000 series sell sheet with model numbers and features ET8015C manual ET8115C manual ET8215C manual How to wire ET series timers |
 Larger image Tork DTU40 digital timer All Tork digital timers- manuals |
Tork
DTWH40 and
DTU40
40
amp/ programmable/ 120-208-240V auto detects voltage 40 amp timer in Nema3 outdoor enclosure/ Nema 1 indoor box Automatically detects voltage/ no dip switches 7-day programmable timer/ Minimum 1 minute schedule Versatile wiring options/Ni-MH Battery Type No replacement parts are offered/ warranty support offered through NSI Buy 120-208-240-277 volt/ 7-day: DTU40 120-208-240-277V electronic with override/ outdoor box Resources: Sell sheet Tork DTU40 timer instructions More Tork digital timers How to wire Tork DTU timer Large image of 240Volt wiring  |
 Tork TU-40 Universal Timer All Tork timers and manuals |
Tork
TU Universal timer for 120V-208V-240V/ auto
detects voltage 40 amp timer in Nema3 outdoor enclosure Automatically detects voltage/ no dip switches 24-hour dial/ Minimum 15 minute schedule Versatile wiring options No replacement parts are offered/ warranty support offered through NSI Buy 120-208-240-277 volt/ 24 hour: Tork TU series universal timer Resources Large image of 240Volt wiring Tork TU manual Tork TU and other Tork mechanical timers Large image of 240Volt wiring |
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 Larger image All GE timers and manuals |
Tork 1102/ GE 15146 240 volt/ 40 amp 24 hour /indoor metal box/ same as Tork above 24 hour-240Volt, Same as Tork 1104/ 240Volt clock motor Replacement parts available. Warranty support through Jasco Buy 240 volt/ 24 hour: Tork 1102 208-277 SPST Tork P47 trippers #101 120Volt clock motor #201 208-277Volt clock motor Resources: Tork 1100 series timer and manuals Control 277 volt or two 240Volt GE 15146 Larger image 240Volt wiring  Larger image: timer controls two 240Volt Loads |
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 Larger image Terminals All GE timers and manuals |
GE
15328 timer/ 40 amp 240Volt// 24 hour/ same as
Tork above
except different override 40 amp/ indoor box On-off override on front of box Similar to Tork 1104 timer/ except override location 1/2"-3/4" Knockouts on sides, bottom, back of timer Replacement parts available/ warranty support through Jasco Buy 240 volt/ 24 hour Buy 1 Buy 2 Buy replacement parts Tork P47 trippers #201 208-277Volt clock motor Replacement parts list Resources: GE Jasco 15328 timer manual Large image of wiring Same as Tork WH and Tork 1104 timers shown above |
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 Larger Image Buttons larger SA 315Sylvania timersSylvania timers and manuals |
Sylvania
/ Tork SA315/
7-day programmable/ 240Volt / 40 amp Up to 7680 watts at 240Volt CR2032 batteries. Battery back up holds programming in power outage, metal outdoor box 'Lifetime warranty'/ most timers have standard 1 year warranty/ however most 240Volt electronic appliances are NOT protected from surge, and warranty might not cover surge damage+ No replacement parts are offered/ warranty support offered from Sylvania or NSI Tork Buy 240 volt/ 7 day: SA307 240 volt indoor box SA315 240 volt indoor/outdoor box Resources SA315 sell sheet wiring SA307 sell sheet wiring Buy 120Volt models SA300 / 120 Volt DP indoorSA310 120 Volt DP outdoorSA306 120 Volt SP outdoorMore Sylvania timers and manuals |
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GE 15136
7-day programmable/ 120-208-240V/ select voltage using dip switches > 120 Volt or 240 Volt water heater timer/ change dip switch to select clock voltage > DPST turns off both hot wires to 240V water heater > Outdoor box> 7 day programmable timer > 9 on-off settings per day > days of the week can be different > back-up battery > no reset after power outage >Indicator lights show operation. No replacement parts available/ warranty support through Jasco Buy 120-208-240-277 volt/ 7 day: GE 15136 outdoor metal box Resources: GE 15132 manual How to wire GE 15136  |
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 All GE timers and manuals |
GE
15207
24 hour/
120-208-240V/ select voltage using dip switches>
120 Volt or 240 Volt water heater timer/ change
dip switch to select clock voltage> DPST turns off both hot
wires to 240V water heaterMinimum 1/2 hour on-off
> each day is same >
rotate dial to set time > push dial segments down to set on-off
functions > Indicator lights show operation> Reset time
dialafter power outageNo replacement parts available/
warranty support offered through Jasco Buy 120-208-240-277 volt/ 24 hour: GE 15135 outdoor metal box Resources: GE 15207 manual How to wire GE indoor 15135 
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 See Larger All Woods timers- manuals |
Woods
59402 / DPST/ 40 amp/ 24 hour/ use jumpers to select
120-208-240V
Woods 59401/ SPST/ 40 amp/ 24 hour/ use jumpers to select 120-208-240V 120V or 277V or 208V-240V water heater and appliance Jumper settings to change voltage 48 segments located around edge of timer dial/ 15 minute intervals No replacement parts available/ warranty support through CCI Buy 120-208-240-277 volt/ 24 hour: Woods 59402 DPST Buy 120-208-240-277 volt/ 24 hour: Woods 59401 SPST Manuals/ resources Woods 59401 and 59402 manual 59401 sell sheet 59402 sell sheet Wiring for 59402 DPST same-similar to GM40 timer How to set analog timers Typical 59401 SPST wiring  Typical 59402 DPST 240Volt water heater wiring  More wiring options for DPST timers |
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 40 amp Larger image  |
Coleman
59000 series box timer/ 40 amp Nema1 indoor enclosure, or Nema 3R outdoor enclosure 48 set points per 24 hour. 1/2 hour ON-OFF. Manual overide 1/2 hour segments located around timer dial: Push downward for ON, upward for OFF 1) Rotate dial until current time lines up with stationary pointer 2) These timers Fit directly into Intermatic enclosures, or can fit Tork enclosure using IAP adapter Resources: Intermatic enclosure, or Tork enclosure
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 Westek TM104 DPST Larger image |
Westek
TM104 / 240Volt / 24 hour/ SPDT/ choose indoor
or outdoor
metal box/ 40 amp
max 5800
watt 40 amp capacity/ Pins located on dial, divide 24 hour/ 15 minute intervals Repeats schedule each day Permanent, on-off-timer override switch No parts available/ unknown warranty support...probably shows on manual American Tack & Hardware, Tel: (800) 777-0802 ? Buy 240 Volt/ 24 hour: TM104 (T104D) /208-240-277V 40 amp/ DPST with 1 NC and 1 NO terminals/ TM104R with outdoor box TM21 240 Volt 25 amp (max 4500Watt) Buy 120 Volt/ 24 hour: TM101 SPST 120Volt 30 amp TM103 DPST NO NC terminals 120 Volt clock motor/ 40 amp Resources How to set analog timers TM104R manual/ pdf Possible wiring for TM104 (T104D)/ SPDT 208-240-277Volt/ 40 amp  Possible wiring for 120Volt TM101 SPST |
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 Larger image |
Westek
THWH21 /
240Volt / 24 hour/ SPST/ indoor metal box/ 25 amp max 4500 watt 25 amp capacity/ maximum 4500 watt Pins located on dial, divide 24 hour/ 15 minute intervals Repeats schedule each day Permanent, on-off-timer override switch No parts available/ unknown warranty support...probably shows on manual American Tack & Hardware, Tel: (800) 777-0802? Buy 240 Volt/ 24 hour: TM21 240Volt 25 amp (max 4500Watt) / indoor box/ TM104R 120Volt 40 amp / outdoor box)/ Resources: How to set analog timers THWH21 240Volt 40 amp timer manual/ pdf Wiring for 240Volt TMWH21 240Volt 25 amp timer  |
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120Volt timer |
Westek
TM101 / 120Volt
/ 24 hour/ SPST/ choose indoor or outdoor metal box/ 45 amp
For 120Volt water heaters 40 amp capacity Pins located on dial, divide 24 hour/ 15 minute intervals Repeats schedule each day Permanent, on-off-timer override switch No parts available/ unknown warranty support...probably shows on manual American Tack & Hardware, Tel: (800) 777-0802? Buy 120 Volt/ 24 hour: TM101R 120Volt 40 amp / outdoor box)/ TM101 120Volt 40 amp/ indoor box Resources: How to set analog timers TM101 120Volt 40 amp timer manual/ pdf Wiring for 120Volt TM101 120 Volt 40 amp timer |
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 GM40 electronic time switch All Intermatic timers- manuals |
Intermatic
GM40 Series commercial grade 24-hour or 7-day
models/
indoor-outdoor
box/
120-208-240V/ 40
amps GM40 24-hour GM40W 7-day 40 amp NO NC contacts/ 120V 208-240V 277 V/ Dip switches to select voltage 50,000 operations full load Set dip switches before applying voltage 15 minute timer intervals on 24 hour timer/ 2-1/2 hour time intervals on 7-day No replacement parts/ warranty support through Intermatic Buy 120-208-240-277 volt/ 24 hour:> GM 40 120-208-240-277Volt 24-hour GM40 AVE auto-detect voltage 24 hour GM40AV-Q digital 7 day Manuals/ Resource: GM40 instruction manual Sell sheet with model numbers Sell sheet 2 Wiring diagrams: How to wire GM40 timer Wiring diagrams: How to wire GM40 timer/ GM40 water heater timer wiring See wiring for two 4500Watt water heaters |
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 GM40AVE digital 20 ON-OFF for 7-day or 24-Hour All Intermatic timers- manuals |
Intermatic
GM40AV-Q 7-day/ 20-50 set points / 40 amp/
indoor-outdoor box/ 120-208-240-277V/ auto detect voltage Automatic voltage detection 120-277V Single channel FM1D20 digital timer/ 20 set points Digital / 40 amp NO NC contacts NEMA 3R indoor/outdoor enclosure Automatically detects voltage 120V thru 277V automatic voltage detection 24 or 7-day. Battery back-up 1 channel timer: The independent relays can be wired for different loads, but both relays turn on-off at same time. Replacement timer module available/ warranty support through Intermatic Buy 120-208-240-277 volt/ 24 hour and 7-day: GM40AV-Q 120-208-240-277Volt Manuals/Resources: GM40AVE manual GM40AVE sell sheet FM1D 20 setpoint programming FM2D 50 setpoint programming Wiring diagrams: How to wire GMAVE timer/ same as GM40 and WHQ series Basic GM40AVE timer wiring See wiring for two 4500Watt water heaters |
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 Large image of 120Volt T7401 All Intermatic timers- manuals |
Intermatic
heavy-duty 7-day mechanical timer/ minimum 3
1/2 hour on-off/ 40 amp Heavy duty 7-day mechanical timers > more expensive than digital programmable shown at page top > mechanical timers are simple to set > each day of the week can be different > day skipper > some models have load carryover during power outage T7400B series 120V models /208-277V models/ 4PST/ dry terminal T7800B series 120V models /208-277V/ 2 NO 2 NC/ dry terminals Repair parts available/ warranty support through Intermatic Buy 208-240-277 volt/ 7-day: T7402BC indoor box/ power carry-over/ 208-240-277V/ 4PST/ T7402B indoor box/ 208-277Volt/ 4PST/ T7802B indoor box/ 208-277Volt/ DPDT 2NO 2NC/ Intermatic T7802B timer Buy 120 volt/ 7-day: T7401BC indoor box/ power carry-over/ 120V/ 4PST/ T7401B / indoor box/ 120 Volt/ 4PST/ T7801BC indoor box/ power carry-over/ 120V/ DPDT 2NO 2NC/ T7801B / indoor box/ 120 Volt/ DPDT 2NO 2NC// Repair parts 156T1978 trippersReplacement trippers 131T68GA 125V motor with carryover WG1600 125V motor WG1603 208-277V motor Resources: T7400-7800 Sell sheet with wiring Sample manual |
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| Electrical
Tips
for choosing box timer 1. Check load rating is 30 Amps or more for safety. Most 240V water heaters are 3500, 4500 and 5500 Watts divided by 240 Volts = 14.5 Amps, 18.8 Amps, and 23 Amps. 2. In southern states, outdoor installation in direct sun will shorten life of timer. 3. For easy wiring, match clock voltage with water heater voltage 4. Timers listed on this page are safe for 1 residential water heater/ but some of them are rated 9,000 watts and can control two water heaters (GM40, T104) |
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 Water heater timer in attic is not convenient |
Tips
for choosing & installing water heater timer 1. Re-setting timers after power outage is inconvenient, especially when located outdoors after thunderstorm. 2. It is difficult to reset timers located in remote locations requiring flashlight, for example in attic or cluttered utility area. 3. Check timer has enough on-off periods per day or per week 4. Put timer at eye-level |
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Install timer for easy access | ||||||||||||||||||||||||||||||||||||||||||
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In-wall
water heater timer More difficult to install, but easier to set controls Modular repairs, more timer choices Water heater is controlled by timer, or home automation: zwave, wifi, insteon How to install All timer options |
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See water heater timer installation |
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I discovered that the
timer caused me to schedule hot water use, and my overall usage
declined. Reducing consumption is the key to saving money with any type water heater Handy resources: Family chart for setting water heater timer How to install electric meter on water heater How much does it cost to operate water heater How much does water heater timer save Off-peak water heater options Troubleshoot electric water heater |
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 Contactors/ relays |
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