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2014

How to wire Intermatic T104 and T103 and T101 timers

Including diagrams for T102, T105, T106 timers
T104 & T174 wiring
T103 & T173 wiring
T101 & T171 wiring
T101B wiring

Wiring

Click link on left ot right to scroll down page to location
T102 & T172 wiring
T105 & T175 wiring
T106 & T176 wiring
T104 manual
T104-50 / 50Hz timer/ same wiring as T104
T10404 manual
T106 manual with NO NC terminals
T10604 manual
T101 manual
T101B manual
T102 manual
T103 manual
T105 manual with NO NC terminals
T100 series sell sheet
T101R24 24Volt CW1570 clock motor

Manuals

T170 Series has same wiring as T100 Series except T170 has day skipper.
Pool timers have same wiring as shown below

T100 series R = raintight enclosure / example T104R
T100 series M = mechanism only/ example T104M
Pool timer manuals:
T104P201 manual
T104M201 timer manual
T104R201 manual
T104R3 same as T104
T101R3 same as T101
T101R201 manual
T101P201 manual
Firemans switch

Troubleshoot/ and fire safety

Troubleshoot resource:
How to Troubleshoot Intermatic timer

Fire safety resource:
Do not use stranded wire without soldering to make solid end. Stranded wire will come loose and cause arcing.
Use only solid copper wire. Do not use aluminum wire.
Maximum 2 wires under same screw plate.
Do not use 2 different gauge wires under same screw plate.
For more wires, or differen gauge wires, attach with wire nut and connect jumper wire to screw plate.
 
Tighten screws very tight against copper wire.
Keep Door to enclosure closed at all times.
Turn off power before working on wires.

Operation resource:
How to operate and set T104 timer

Close-up photos of T100 series

Photographs showing parts and maintenance:
See up close photos of WH40 (same as T104)
Intermatic clock motor
3 watt power consumption

Buy clock motors/ 50 and 60 Hz:

US power grid is 60 Hz
WG1573 208-277V Amazon
WG1570 120V at Amazon
WG1576 480V at Amazon
CW1570 24V at Aplus
50 Hz
WG1571 motor for 50 Hz 120Volt at Aplus
WG1574 motor for 50Hz 208-277V Amazon
Order T104-50 timer 208-240V 50 Hz     T104-50 at Amazon
Resource
How to replace Intermatic clock motor
Some Intermatic timers are rated both 50-60 Hz and can be used any country worldwide
See more 50-60 Hz mechanical timers at Intermatic
EH40 30 amp timer is 50-60 Hz
                                     156T1961A tripper                        
Enclosures                       T100 series mechanism          156T1976A tripper

More repair Parts

156T1978A T100 series trippers at Amazon
T100 series parts
T170 series parts
Prevent fires: Never put stranded wire and solid wire under same screw plate. Never mix different wire gauges under same screw plate. Use only copper wire. Observe load ratings for timer and wires, max 40 amp per pole. Keep enclosure door closed to prevent overheating from getting supply of oxygen and growing into fire that can spread to local room.

Intermatic T104P201 Intermatic 156T4042A fireman switch
Fireman's switch
How to wire fireman's switch

T100 series Pool timers

Pool timer manuals
Pool timers have same wiring as T100 series, except with fireman's switch
Fireman's switch is connected to wires from pool heater, and is not wired with electricity inside timer. Pool heater must have fireman switch connections.
PF1112T T104 with freeze thermostat

Control centers/ with T100 series timers

Maximum 15 amp breaker in control centers with circuit breaker
See T104 timer wiring below
Control centers and wiring
How to wire Intermatic Sprinkler timers
How to wire WH40, EH40, EH10, WH21 timers
How to wire Intermatic ET series timers
How to wire Intermatic GM40 and WHQ timers
How to wire T1906, T1905, T1975, T1976 timers
How to wire Intermatic ST01C, Ei600, EJ500 timers
How to wire remote control timer
How to wire 3 phase timer

More Intermatic

See all Intermatic timers
How to wire Intermatic timers
How to wire Intermatic/Malibu timers
How to wire Intermatic FM1 timer
How to wire Intermatic PB300 series timer
How to wire Intermatic whole house surge

T104 Wiring begins here

Applies to T104, T104R/P, T104-50, WH40, T174, T174R, T104R, T104R3, T104P201, T104R201, T104M, T174M, etc
How do you know if you have T104: Is power connected to double pole circuit breaker?, Are there 5 screw terminals on timer? Are white clock wires on terminals 1 and 3? Is clock motor WG1573?
T104 wiring
Detail below
       Intermatic WH40 timer       Intermatic T104P201 timer
T104/ T104R                        T174 day-skipper manuals          WH40                             T104 pool timer manuals ...have Identical wiring
T104 at Amazon                    T174 at Amazon                       WH40 at Amazon               Pool timers at Amazon
Intermatic T104
Basic wiring diagram

T-104 timer 240Volts or 208 Volts

T104 manual
T100 series sell sheet

T-104 timer for 240 Volt water heaters
Check label on side of water heater for Volts & Watts
This timer can be used for 120V circuit, see below

T104 uses WG1573 clock motor
T104 Nema 1 steel indoor box
T104R Nema 3R steel outdoor box
T104P Nema 3R plastic outdoor box
T104PCD3 Nema 3R see-thru door
Resources:
T104 & T103 & T101 at Intermatic
Repair part list
Ttripper pins/ and replacement clock motors

How to find Hot wire

Buy:

T104 series
T104     208-240-277V Grey metal indoor box at Amazon
T104-20 (WH40)     208-240-277V (no external switch)
T104     208-240-277 Volt SPDT at Amazon

T174 with day skipper
T174           208-240-277 Volt SPDT at Amazon
T174CR     208-240-277V outdoor box and carryover Amazon

Pool timers: 208-240V
Intermatic T104R3 at Amazon
T104P201 plastic box at Amazon
T104R201 metal box at Amazon

WG1573 208-277V Amazon
See another image of same wiring shown above
Basic wiring diagram

T-104 timer 240 Volts or 208 Volts

Same wiring applies to T174, WH40
and  T174
and  WH40

and T104P201 and T104R201


Add tape to white wire, when using black-and-white wires for 240Volt,
This will notify next electrician that white wire carries power
T104 controls two loads
Larger image

T-104/ Two 240 Volt loads or Two 208 Volt Loads

Move motor leads to terminals A and 1
Turning off 1 Hot wire will turn off 240Volt circuit.
Read difference between 120Volt and 240Volt

If you want both Loads to turn on-off at different times, then you need two timers, or digital timer with two-channel capability such as GM40AVE, GMX2FM2, ET1100, RT1700, P1353
Open following link and use Ctrl+F find feature on browser
Intermatic timers and manuals

240Volt wires can be
Black-White
Black-Red
Black-Black
Sometimes Red-Red
Should not be White-White
Wire T104 timer for 277 volts
Larger image

T-104 277 Volts

Move motor leads to terminals A and 1

Terminals 3 and 4 are dry (have no voltage) in this configuration, and can be wired to control any voltage, or jumper hot wire between terminals 1 and 3

277 Volt timer can be used to control 3-phase 3-pole contactor
How to install 3-phase timer
Intermatic T102 wiring
T-102 timer is pre-wired for this installation
See more T102 wiring
T104 controls two 277 volt loads
Larger image

T-104/ Two 277 Volt loads

Move motor leads to terminals A and 1
Add jumper from terminal 1 to terminal 3

If you want both Loads to turn on-off at different times, then you need two timers, or digital timer with two-channel capability such as GM40AVE, GMX2FM2, ET1100, RT1700
Open following link and use Ctrl+F find feature on browser
Intermatic timers and manuals
T104 timer 3-phase    277V
Larger image T104 controls 277 Volt
T104 208-240 3-phase    208-240V
Larger image 208-240 volt 3-phase

T-104 timer controls 3-phase

Control 480-277Volt 3-phase : use 277 Volt wiring above or diagram on left
Control 208 Volt 3-phase : Use 240-208 Volt wiring above or diagram on left
Control 240Volt 3-phase : use 240 Volt wiring above or diagram on left

Fused disconnect required on 3-phase line and timer in most commercial applications

Resources:
How to wire 3-phase timer
480 Volt timer
Larger image

T-104 timer controls 3-phase 480Volt

480Volt timer
Control 480 V 3-phase using T104 timer
Change 240V WG1573 clock motor to WG1576 clock motor

Read more about this 3-phase conversion

Intermatic clock motor

Change clock motor from 240V WG1573
Install 480V WG1576
WG1576 480V at Amazon
1) Control 120Volt Load using T-104
2) Control 2 - 120 Volt Loads
3) Rewire timer

4) Rewire timer + change clock motor to WG1570 120V

Use this diagram to control 3-phase using T104 timer

T-104 timer controls 120 Volts

Each single phase household circuit takes 2 wires to complete the circuit.

120V takes one 120V hot wire and one neutral wire to complete circuit.

240V takes two 120V hot wires: One 120V hot wire from each busbar to complete circuit.
Read difference between 120 volt and 240 volt


See basic water heater circuit
Intermatic RC939 controls timer  
Larger image            
 RC939 transmitter      RC613 receiver      WH40 or T104 timer

Override timer with remote control

Control 240Volt 3500 watt water heater using Intermatic RC 939 remote control and RC615 120Volt receiver
240Volt circuit can be turned off by turning off 1 hot wire
Do not exceed amp rating of RC615, otherwise install RC613RC relay or PT1203M

Buy:
RC939 3-channel radio transmitter at Amazon
RC613 receiver at Amazon


Resources:
Up to 100 feet away
Full product line
RC939 transmitter manual
Remote receiver manual
RC939 3-channel radio transmitter at Amazon
Fuseholders

How to find Hot wire

Ground wire not shown.
All ground wires connect to Neutral-ground busbar
Larger image

T-104 timer 240Volt: Pool control center

Control Centers with busbars for installing BR-type push down circuit breakers.

Breakers are installed and wired exactly like main breaker panel

Control centers have T104, T101, T106 mechanisms to control multiple pool functions such as pool pump, pool filter, pool light, outlets, and pool cleaner. Install extra circuit breaker for outdoor lights etc.
Install breakers in control panel

Resources
Control center is a subpanel: How to install a subpanel
See inside main breaker panel
How to replace circuit breaker
Intermatic T30000R5
Control center panels:
Sell sheet
More Control centers

Buy bare control center
T21000R Amazon
T30000R Amazon
T40000R Amazon
Wiring for two T104 timers
Larger image
Image for two independent breakers

Two T104 timers for filter and cleaner

Filter pump must be ON so cleaner does not burn up
Both clock motors connect to terminals 1 and 3 on filter timer.
Power only reaches cleaner timer when filter timer is ON

Resources:


T104 timer with freeze control
Larger image

T-104 timer 240Volts: Freeze thermostat

Prevent pool pump and pipes from freezing
Also use illustration below for SPST

Resources:
Intermatic freeze comtrols
PF1112T manual
PF1202T manual
PF1102M freeze control pdf
More control centers and wiring
PF1112T T104 with freeze thermostat
T104 freeze wiring
Larger image SPDT
Larger image SPST
Timer/ freeze control/ and 30 amp switch

T-104 timer 240Volts SPDT :Freeze thermostat

Prevent freezing
178T24 Thermostat overrides timer.
Also use illustration above for SPDT
When temperatures drop toward freezing, the freeze thermostat override timer operation

Buy:
178T24 thermostat at Amazon
40 amp contactor with 240Volt coil At Amazon

Resources:
Intermatic freeze controls
178T24 wiring
Terminals
Contactors

T-104 timer wired for 480 Volts

WG1576 for 60 Hz 480V at Amazon

Change T104 timer 

by changing clock motor

Intermatic clock motor >>>>> Intermatic clock motor








T-104 timer changed into T104-50

50 Hz timer for use in UK, India etc
WG1574-10D motor 50Hz 208-277V Amazon
T104-50 at Amazon

T-104 timer becomes T103 120 Volts

Change T104 timer into 120 volt timer
WG1570 for 60 Hz 120V at Amazon
Move clock motor wires to terminals A and 1
How to wire T103
How to replace Intermatic clock motor

At aplus
At ESO

T-104 timer 24 Volts

CW1570 for 60 Hz 24V at Aplus
Move clock motor wires to terminals A and 1
WG1573 208-277V Amazon

T101 Wiring begins here

Applies to T101, T101R, T171, T171R, T101R3, T101M, T171M
T101 wiring
Detail below
               Intermatic T101R3
T101                                     T101R Raintight                    T171 day-skipper manuals        T101 pool timer manuals  ... have Identical wiring
T101 at Amazon                           T101 at Amazon                     T171 at Amazon                  Pool timers at Amazon
Larger image

T-101 timer 120Volts

T101 Manual
Sell sheet with model numbers
Replacement clock motors
T100 series repair parts

T-101 timer has WG1570 120V clock.
Lift and rotate dial to set current time.

T-101 timer for 120 Volt water heaters

T-101 SPST [single-pole single-throw]
Black Hot wire must connect to pole 1.
Neutral must go to pole A
Black to Load goes to pole 2
White to Load goes to pole A
Buy T100 series:
T101   series  120V SPST at Amazon
T101PCD82     120Volt see-thru outdoor box
T171 series   120volt SPST at Amazon
T171 CR      120V SPST outdoor box and carryover
WG1570 clock motor 120V at Amazon

Buy T100 series pool timers:
Intermatic T101R3 at Amazon
T101P201 Plastic at amazon
T101R201 metal at Amazon


T101 Resources:


How to operate and set T101 timer
How to find Hot wire
Pool timers

T-101 wiring illustration larger: same diagram shown above

T-101 timer 120Volts

Same wiring applies to T101
and T171
and T101P201 and T101P and T101P3 and T101R201

T101 timer for 3 phase
Larger image

T-101 timer controls 3-phase

Use T101 120Volt timer to control 3 phase loads.
use wiring diagram above to control 3-pole contactor, or diagrams to left and right
Neutrals connect to terminal A
Hot from breaker connects to terminal 1
Hot to contactor connects to terminal 2
No fuse required on incoming line.
Fused disconnect required on 3-phase line and timer in most commercial applications
More 3-phase

Wire T101 to control 3 phase contactor
Larger image
Method 1: change clock motor
to 240Volt
Larger image

Method 2: Wire timer for 240Volt
Larger image

T-101 timer  240 Volts

Convert T101 into T102 timer to control 240Volt load:
Replace 120volt WG1570 clock motor with WG1573 clock motor. Connect new clock to same terminals A and 1.
240V: L1 Hot from breaker connects to terminal A; L2 Hot from breaker connects to terminal 1
240Volt wires going to Load connect to terminals A and 2.



Change T-101 timer into (208-277) 240Volt T102 timer

Change T101 timer into 240 Volt
WG1573 for 60 Hz 208-277V Amazon

Change T101 timer 

by changing clock motor

Intermatic clock motor >>>>> Intermatic clock motor









Change T-101 timer from 60Hz to 50 Hz

WG1571-10D motor for 50 Hz 120Volt at Aplus

T-101 timer 24 Volts

CW1570 for 60 Hz 24V at Aplus
How to replace Intermatic clock motor

T-101 timer wired for 480 Volts

WG1576 for 60 Hz 480V at Amazon
At aplus
At ESO

T-101 timer wired for 480 Volts

Change clock motor to WG1573
WG1576 for 60 Hz 480V at Amazon

T101B Wiring begins here

Applies to T101B with separate wiring terminals
T101B wiring

T101B timer / SPST / 40 amp/ 120V clock/ independent switch terminals control any voltage

120Volt clock motor
Buy:
T101B       120V SPST separate load terminals/ at Amazon
Resources:
T100 series sell sheet with model numbers and features
T101B manual/ pdf

At Intermatic
T101B timer
T101B timer

Change T-101B clock motor for 208-277

Change T101B timer into 240 Volt
WG1573 for 60 Hz 208-277V Amazon

T-101B clock motor 24 Volts

CW1570 for 60 Hz 24V at Aplus

T-101B clock motor 480 Volts

Change clock motor to WG1573
WG1576 for 60 Hz 480V at Amazon



Change clock motor voltage

Intermatic clock motor >>>>> Intermatic clock motor

Change T-101B clock motor from 60Hz to 50 Hz

WG1571-10D motor for 50 Hz 120Volt at Aplus

T103 Wiring begins here

Applies to T103, T103R, T173, T173R
T-103 120 Volt timer     
T103                                         T173  with day skipper manuals          ... have identical wiring
Buy: T103 at Amazon                      Buy:173 timer at Amazon
Larger image
Intermatic T-103

T-103 timer 120V or 240V

T103 timer requires neutral wire
T-103 has WG1570 120V clock motor
Intermatic T103 timer can be wired to control 120 Volt circuit -or- 240 Volt circuit
The key is that the T-103 has 120 Volt clock motor and a white Neutral is always connected at pole A

(If you have 240Volt line, and no neutral wire, then change clock motor to WG1573. Or to get this to work until new clock motor arrives, connect ground wire to terminal A, and one of the 240V Hot wires to Terminal 1)
Resources:
T-103 manual
T100 series parts
T170 series parts

See T100 timer series
See T173 timer series

How to operate and set T103 timer
Buy:
T103   series  120V SPDT at Amazon
T103PCD82      120-240V see-thur outdoor box
T173           120Volt SPDT  at Amazon
T173CR     120V DPST outdoor box and carryover
WG1570 clock motor 120V at Amazon

Generally, 240Volt wire with Neutral will be 10-3 wire. Black and Red are Hot. White is Neutral. Bare wire is ground

color code household wire
See wire sizes and load ratings

Larger image

T-103 timer 120Volts

Same wiring applies to T173 timer

Larger image

T-103 timer. Two 120Volt loads

Same wiring applies to T173 timer
T101 timer for 3 phase
Larger image

T-103 timer controls 3-phase

Use T103 120Volt timer to control 3 phase loads
Same wiring applies to T173 timer
More 3-phase


Wire T103 to control 3 phase contactor
Larger image

Change T-103 timer into (208-277) 240Volt T104 timer

WG1573 for 60 Hz 208-277V Amazon

Change T103 timer 

by changing clock motor

Intermatic clock motor >>>>> Intermatic clock motor








Change T-103 timer from 60Hz to 50 Hz

WG1571-10D motor for 50 Hz 120Volt at Aplus
WG1574-10D motor for 50Hz 208-277V Amazon

T-103 timer wired for 277 Volts

WG1573 for 60 Hz 208-277V Amazon
See wiring diagram above for T104 277V
How to replace Intermatic clock motor

T-103 timer wired for 480 Volts

WG1576 for 60 Hz 480V at Amazon
At aplus
At ESO

T-103 timer wired for 24 Volts

WG1576 for 60 Hz 480V at Amazon

How to wire Intermatic T102: Wiring begins here

Buy:
T102     208-240-277V SPST at Amazon
Intermatic T102 wiring

T-102 timer 277 volts

T102 is for voltages from 208V to 240V to 277V
Hot connects to Terminal 1
All Neutrals connect to Terminal A
Hot to load connects to Terminal 2
Timer clock motor is pre-wired for this installation


Resources:
T102 manual
T100 series parts
Convert indoor timer into outdoor timer:
Enclosures
Buy:
T102 208-240-277V at Amazon

T172    208-240-277Volt SPST
WG1573 clock 208-277V Amazon


277-480 3-phase
How to wire 3-phase timer

Wire Intermatic T102 timer

T-102 timer 208-240 volts

Hot1 and Hot2 connect to Terminals 1 and A
Hot 2 to Load connects to Terminal A
Hot1 to load connects to Terminal 2
Timer clock motor is pre-wired for this installation

When white wire is used to carry voltage, instead of used as neutral wire, then add black tape to notify next electrician what wiring is present.


When using black-and-white wires for 240Volt, add tape to white wire.
This action will tell next electrician that white wire carries power

Change T-102 timer into T101

WG1570 for 60 Hz 120V at Amazon

Change T102 timer 

by changing clock motor

Intermatic clock motor >>>>> Intermatic clock motor

How to replace Intermatic clock motor

T-102 timer wired for 480 Volts

WG1576 for 60 Hz 480V at Amazon
At aplus
At ESO

T-102 timer 24 Volts

CW1570 for 60 Hz 24V at Aplus
Convert  timer to 50 Hz:
WG1571-10D motor for 50 Hz 120Volt at Aplus
WG1574-10D motor for 50Hz 208-277V Amazon

How to wire Intermatic T105: Wiring begins here

Nema 1 indoor enclosure/
To convert to 208-277V operation, replace WG1570 clock motor with WG1573 clock motor
Wire Intermatic T105 timer

T-105 timer 120 volts

T105 timer has NO NC terminals
When timer is OFF, then NC Load2 is ON, and NO Load1 is OFF
When timer is ON, the reverse happens, and Load2 is OFF, and Load1 is ON


Resources
T105 manual

T100 series parts
Buy:
T105     208-240-277V w/ NO NC contacts at Amazon
T175           120Volt w/ NO NC contacts at Amazon
2T2502GA beige plastic Outdoor box at Amazon
WG1570 clock motor 120V at Amazon

T-105 timer converted to T106 timer

WG1573 for 60 Hz 208-277V Amazon

Change T105 timer 

by changing clock motor

Intermatic clock motor >>>>> Intermatic clock motor

Resources:
How to replace Intermatic clock motor

T-105 timer 480 Volts

WG1576 for 60 Hz 480V at Amazon
At aplus
At ESO

T-105 timer 24 Volts

CW1570 for 60 Hz 24V at Aplus

Convert  timer to 50 Hz:

WG1571-10D motor for 50 Hz 120Volt at Aplus
WG1574-10D motor for 50Hz 208-277V Amazon

How to wire Intermatic T106 timer: Wiring begins here

Nema 3R indoor-outdoot enclosure
To convert to 120V operation, replace WG1573 clock motor with WG1570 clock motor
Wire Intermatic T106 timer

T-106 timer 277 volts

T106 timer has NO NC terminals
When timer is OFF, then NC Load 2 is ON, and NO Load 1 is OFF
When timer is ON, the reverse happens, and Load 2 is OFF, and Load 1 is ON
Resources:
T106 manual
T10604R manual
T100 series parts
Buy:
T106R raintight timer at Amazon
T106      208-240-277v w/ NO NO contacts at Amazon
T106      208-240-277v w/ NO NO contacts at Amazon
T176           208-240-277 Volt w/ NO NC contacts
WG1573 clock motor 208-277V at Amazon

T106M
T106M mechanism-only will fit into any Intermatic enclosure.
Buy separate mechanisms for each T100 series timer by adding M suffix
Intermatic trippers and parts
AO Smith motor wiring Including 2 speed

3-phase 2 speed motor wiring

T-106 timer 480 Volts

WG1576 for 60 Hz 480V at Amazon

Wire Intermatic T106 timer for 208 volts

T-106 timer 208-240 volts

T106 timer has NO NC terminals
When timer is OFF, then NC Load2 is ON, and NO Load1 is OFF
When timer is ON, the reverse happens, and Load2 is OFF, and Load1 is ON

Use this configuration for 2-speed 240Volt pool pump that runs continuously.
Use NO NC connectiosn to change between High and Low speed

For 120Volt application,.buy T105 timer.
Or replace WG1573 clock motor with WG1570


When using black-and-white wires for 240Volt, add tape to white wire.
This action will tell next electrician that white wire carries power
T106 2-speed pump
2-speed pool pump wire colors may be different than illustration
For example High speed might be White and Low speed Yellow
Connect Low speed to NC terminals. High to NO terminal.

T-106 timer: 2-speed 240Volt pump

Timer acts as a high-low switch for continuous-running 2-speed pumps.
T106 timer does not turn pump off. Use P1353 for 2-speed pumps that turn off
Or use 2 timers, and wire first timer before T106.
Resources:
See wiring diagram for two timers

Wire colors will be different. For example white wire may be Low speed.
Check wiring diagram and instructions for pump

Typically Low speed is running most of the time
So connect Low speed wire to NC terminal 1, and High speed wire to NO terminal 4.
Set timer to turn ON during times when High speed is needed.
Minimum on-off is 1 hour.
Resources:
How to set Intermatic T100 series timers
Resources:
Other 40Amp timers can control 2-speed pump:
Intermatic GM40
GE 15207
Tork DTU40
Intermatic T1906 20 amp timer

2 speed motor wiring
2-speed motor wiring larger
Pump operates continuously. Install another timer on L2 Hot line to turn pump ON-OFF Pump motor must be grounded

Larger image

T106 and T104 timer control 2-speed pump

T104 turns pump on-off
T106 changes pump from high speed to low speed
Wire this configuration when 2-speed pump is not ON all the time
Use T106 without T104 when 2-speed pump is ON all the time

Resources:
T10604 Door label
More control centers
Intermatic P1353 timer
See P1353 manual and wiring

2-speed alternative timer

Buy:
P1353 timer at Amazon
PE153 at Amazon

Resources:
P1353 manuals and wiring
See more information on P1353 series
For 2-speed pumps that do not run continuously, install P1353 timer.
Snaps into any Intermatic enclosure

Convert indoor timer into outdoor timer:

Buy different enclosure
Enclosures

Buy:
2T2502GA beige plastic Outdoor box at Amazon
Intermatic GM series
T1906 and T1976

2-speed alternative timer/ 20 amp

Use T1906 and T1975
SPDT with NO NC terminals, For 2-speed pumps and other NO NC applications
15 minute time intervalvals instead of 1 hour for T106
T1976 has day skipper
Resource:
T1906 and T1976 wiring

Lower amperage 120Volt timers with NO NC terminals:

Resources:
FM1 series 
PB series 
FMD series
T106 timer wiring

T-106 timer: Single-pole Normally Closed

Normally Closed means the circuit is turned ON, and power is available to run Load.
When timer activates, the circuit is turned OFF

Move clock motor wires from A-3 to A-1

T-106 timer 24 Volts

Change clock motor to CW1570

At aplus
At ESO
control water heater with T106 timer
Larger image

T-106 timer changes water heater temperature

Use timer for two different temperatures on electric water heater.

Either upper thermostat and element have power or lower themostat and element have power. But not both at same time.

Install ECO-protected thermostat for lower thermostat.
Both upper and lower parts of tank are ECO-protected from overheating
Rewire tank so upper and lower parts are separate.
Use T106 timer to switch power between lower and upper parts of tank.

Normal operation, the lower thermostat and element receive power and keep tank at temperature set point. Upper thermostat and element have no power.
This is called 'redundant' water heater operation. This technique for heating tank more rapidly after cold water first enters tank.
Resources:
How to wire thermostats

When timer activates, power to lower part of tank turns OFF. Power to upper part of tank begins. Upper thermostat is set for higher temperature.
Since tank is at regular temperature, the higher setting means upper element will turn ON and begin heating tank to higher set point.

Use this technique to heat water very hot for laundry cycle.
Disadvantage: The lower part of tank will cool rapidly as new cold water enters tank, so this technique is good for making short-term batches of hot water.
Resources:
This technique applies to other timers:
Intermatic GM40 timer
Intermatic WHQ timer
Tork DTU40 timer
GE 15207 series timers
Intermatic T1906 & T1976
How to wire T106 timer

T106 with 240 Volt clock motor 

Toggle water heater between 240 Volt or 120 Volt

Move clock motor wire from A to NO terminal
Timer ON, then water heater 240Volt
Timer OFF, then water heater 120Volt
Use for off-peak, use for 120Volt solar panels

Resources:
How to wire water heater for 120Volt
Wires inside water heater do not change.
Elements and thermostats will work with 120Volt or 240Volt

Element watt consumption drops when voltage drops
No need to change breaker.
Just run additional neutral wire to timer.
Element rated for 4500 watts @ 240Volt, will consume 25% or 1125 watts
@ 120Volt

Resources:
This technique also applies to T105 timer, except Move exchange NC and NO wires so Hot 2 connects to NC, and Neutral connects to NO

Other timers can also toggle between 120 and 240
Intermatic GM40 timer
Intermatic WHQ timer
Tork DTU40 timer
GE 15207 series timers

Assorted information/ Pool control centers
T10604R Door label
T10604R Manual
E-mail if you need help with specific wiring problem
E-mail: info@waterheatertimer.org

240Volt/ fireman switch
T104R201 manual
T104P201 manual
Same wiring as T104

T104R201 at Amazon
T104P201 timer at Amazon

240Volt
T104R3 manual/ same at T104 timer manual
Same wiring as T104

T104R3 timer at Amazon
T104P3 timer at Amazon

120Volt, beige metal outdoor box
T101R3 manual/
same as T101 timer manual
Same wiring as T101

T101R3 timer at Amazon
T101P3 at Amazon

Pool timers

P series enclosure= plastic outdoor enclosure
R series enclosure= metal outdoor enclosure with locking hasp
Beige-colored enclosures.
Intermatic pool timers and manuals

Wiring same shown on this page except for fireman's switch.

Same clock motors.
Same wiring terminals.
Same 40 amp load rating.



Fireman switch wiring
Larger image
How to wire fireman's switch
T104M manual with firemans switch

120Volt/ fireman switch
T101R201 manual
T101R201 at Amazon

T101P201 manual
T101P201 at Amazon
Same wiring as T101


How to add a subpanel and other electrical wiring

See basic water heater circuit

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Figure volts amps watts for electric water heater
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How to change water heater from 240Volt to 120Volt
How to wire thermostats
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Terminals
Select and install wire nuts
Select wire size

Replace breaker
Install subpanel

Electrical formulas
Electricians forum
How to wire GFCI
How to wire GFCI combo

Basic water heater circuit
How to wire water heater for 120Volt
Install old work box

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Romex connector

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How to install 3-phase timer
How to wire 3-phase outlets
How to wire 3-phase surge protector
What is 3-phase

How to wire whole house surge protector
How to wire under-counter water heater

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Fuseholder
Contactors
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Whole house surge protector
3-phase surge protection
Circuit breakers

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Difference between 50Hz and 60Hz
How to install electric meter on water heater
How to wire water heater thermostat
How to wire water heater with switches and timers

6x6x4 Enclosures
Intermatic timer enclosures

Additional timers and links

Compare Box-type water heater timers
With manuals and wiring diagrams
 EJ500 Utilitec Tork ST01C  ST01C UPM Aube T1032Aube Intermatic EI500Intermatic
    Water heater
GE  Leviton Hagar Gardena T1030  Gardena
Brinks timer Brinks
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Timex
 Countdown
Westinghouse timers
Westinghouse
Sylvania

Omron
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Westek
Woods 49028
Outdoor timers

Power strips
3-phase timer
3-phase timer
Diehl timers
Diehl timers

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Intermatic trippers and parts
 Dayton Power pack Intermatic GM series
Intermatic GM series
Intermatic T1906 and T1905
  
Intermatic T-101 T103 T104
Paragon timers and manuals
Tork TU universal timer
Westek box timers
Intermatic EH40 and WH40
  
Tork timers and manuals
Tork TU universal timer
Troubleshoot intermatic
Sylvania timers

How to set analog  timers
Intermatic sprinkler timers

Melnor water timer manuals
Possible VIGORO manuals
Gardena water timer manuals
Orbit water timer manuals
Raindrip manuals
Hunter manuals

Pool timers and manuals
Intermatic T104P201
Wire GE 15207 timer
3-phase timer
3-phase timer


GE box timers
Gardena timers
Gardena T1030
Intermatic EH10 and WH21

How to wire Cooper 277
Westinghouse timers
Westinghouse timers
Timex timers
Brinks timers

FVIR flammable vapor
How to wire Intermatic GM40
Intermatic GM series
How to wire Tork DTU40
Tork-DTU40

Tork pool timers and manuals

Adjust temperature on gas water heater
Troubleshoot gas water heater


See basic water heater circuit

How to install gas water heater


How to troubleshoot Intermatic timer
How to operate and set T104 timer

Figure Volts Amps Watts for water heater

How to twist wire


Anode rods


Troubleshoot electric water heater

How to wire off-peak water heater

Compare all water heater timers

Clean sediment from tank

Electricity from pole to breaker box
Troubleshoot Rheem tankless
Troubleshoot Bosch tankless

Cost to run a water heater

Pro-n-con Tankless Water heater

New water heater ideas

Atwood water heater resources

Intermatic ST01C timer

How to remove old element

Re-circulation system
Gas and electric water heaters Support the economy:
Buy water heaters  from my associate links:

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

Resources:
How to install gas water heater
Troubleshoot gas water heater
Troubleshoot electric water heater

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