Question about Intermatic T104-20 Indoor Hot Water Timer

Open Question

WIRING IN A ROOM STAT

I need to wire in a room stat to a siemens rwb 30 timer on a combi boiler system.The heat is either on or off at the moment with no temp. control.I do not the instructions of the timer so not sure if any of the un-used terminals are for a stat.I know i can wire the stat in to the presently used terminals to the pump then to the pump afterwards but would rather use the terminals if there are any specifically for this.
I have been on siemens website but cannot find a wiring diagram.

Thank you.

Posted by on

  • Rob Duron
    Rob Duron May 11, 2010

    You want to use the timer to power down the combi boiler when it's not needed and a room stat for temp control. right? what is the boiler make and model?

×

6 Suggested Answers

gotgeek2
  • 565 Answers

SOURCE: clock doesn't work

The wiring diagram for that timer is somewhat misleading. The 120 volt clock timer motor is connected internally to the "A" (neutral) terminal and the #3 terminal. The "A" (neutral) terminal is to the immediate left of the #1 terminal.
Here's how to do the wiring for your use, (assuming a 120 volt supply circuit and a 120 volt lighting or other load):
Connect the incoming power (line) black wire to terminal # 3. Connect the incoming (neutral) white wire to terminal "A".
Connect the outgoing (load) black wire to terminal # 4.
Connect the outgoing (neutral) white wire to terminal "A".

Posted on Mar 08, 2009

john224
  • 1378 Answers

SOURCE: Bought an Intermatic T104 Timer for a 120v pool

T104 series intermatic timers are 208/230/277 volt clocks, not 120. I believe you have the wrong model and need a T101 series instead.

Posted on Jun 13, 2009

  • 90 Answers

SOURCE: Intermatic T103 timer wired for 240V

yes u will, but u will have to make sure one of the motor wires are hooked up that way also, in case it has been moved, here is a link with the diagram u need

http://www.intermatic.com/~/media/files/intermatic/products/instructions/timers/t103%20-%20english.ashx

Posted on Aug 21, 2009

  • 243 Answers

SOURCE: Bought a Intermatic sprinkler timer. need help.

reading the specs i should say its a timer for only one zone. you can use it for one zone switching or for the pump. sorry.

Posted on Feb 14, 2010

  • 2841 Answers

SOURCE: I have purchased a Utilitech

What you have a single pole light switch you are replacing with the timer. As you say you have 2 black wires. One black wire is the incoming power wire and the other black wire goes up to the light. On a normal single pole switch is makes no difference which of the screws you connect it to. Of course with the exception of the ground screw. Tie all the white wires back together that are in the wall box and shove them to the rear as they are not needed to make this connection. The correct connection is to connect one of the black existing black wires in the wall switch box to the black wire on the timer. Now connect the other black wire to the blue wire on the timer. The red wire is not used in a single pole connection and is only used in a 3 way switch connection, so just put a twist connector on it and shove it back in the box. To recap, connect black wire on timer to either black wire in box. Connect the other blue wire to the other black wire. Do not use the red wire. Hopefully you did not hurt the timer by connecting it incorrectly. If it does not work after setting the timer up according to the instructions you have ruined the timer by wiring it incorrectly. Hopefully no damage has been done.

Posted on Aug 14, 2010

SOURCE: Triing to install intermatic t103 please help.

T103 has 120Volt clock motor, so we can wire this timer.

T103 timer is rated for 30 amps and 2horsepower and your blowers use 28 amps.
So we're getting close to max on the timer. Hopefully blowers won't all be started at one time since motors draw maximum amperage when they start.
However, you need 30 amp breaker and orange 10 gauge wire for that much amperage >> unless only one blower is turned ON at any given time.
Always match wire size, amperage of breaker and amperage of Load or it will trip the breaker.
If you put 30 amp breaker on size 10 wire it is good. But 30 amp breaker on smaller size 14 or 12 gauge wire is fire hazard.
http://waterheatertimer.org/Color-codewire.html
Add a comment at any time, and I will respond

Look at the basics:
You have 2 cables.
One cable comes from breaker box.
Other cable goes to three 120V plugs (120V is same as 110V).

Each cable has black-wire, white-wire and bare-copper-ground-wire.

How to wire the timer.
Timer has 5 terminals: A 1 2 3 4

A) Cable from breaker box:
White wire from breaker connects to terminal A
Black-wire from breaker connects to terminal 1

B) Cable going to 3 plugs
Black wire to plugs connects to terminal 2
White wire to plugs connects to terminal A
Ground wires connect to green ground screw.

Terminals 3 and 4 are not used in this case.
Here is a wiring diagram that shows 120Volt from breaker box and 120Volt going to Load
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T103

Posted on Nov 27, 2010

Testimonial: "Great help quickly thanks"

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

How to set boiler timer


Find typical timer modules and manuals following link:
http://waterheatertimer.org/Woods-timers-and-manuals.html#PB

Gene
h

Jan 17, 2014 | Timers

1 Answer

I am wanting to wire a Baxi 105E boiler to a Danfoss 102 mechanical timer. The boiler has 5 wires = red, blue, earth, black and yellow. The Timer has six terminals = 1 DHW, 2 HTG, 3 COM, I (earth), 5...


1) Contact baxi:
http://www.baxi.co.uk/contact.htm

2) Which boiler wires? I don't know. Page 24 manual.
Manual says to disconnect link between terminals 1 and 2, and instert timer in-line.
http://www.acwilgar.co.uk/Boiler-Manual-PDF/Baxi/Combi%20instant%2080E%20&%20105E.pdf

2) I can tell you about the timer wiring.
Timer is 230Volts
Not sure if you have British Hot-Neutral 230Volt, or Hot-Hot 230Volt.
Wiring is same 2 wires, but words to describe are different.
Let's say you have Hot-Neutral 230V
Connect Hot to L6
Connect Neutral to N5
This will power the timer so it runs and keeps time.
You can get Hot-Neutral wires from Hot-Neutral that arrive to power the boiler.

Now the timer terminals are separate.
E terminal is Earth or ground.
The Common is Hot wire.
The timer then turns on-off and switches back and forth between DHW and HTG.
HTG is heating
DHW is defrost.
Timer has 2 sets contacts.

When timer activates first set of contacts, then DHW defrost terminal receives power from Hot wire on Com terminal. At this time, all power is cut to HTG heating terminal.

When the defrost cycle ends, then the heating circuit receives power, and then the timer has programming that opens and closes a second set of contacts going to HTG heating terminal.

Which wires from boiler connect to each terminal, I am not sure.

Feb 03, 2013 | Timers

1 Answer

How to wire a paragon defrost timer with liquid line solenoid valve t-stat electric heater for walk in freezer


page 20 in the heatcraft refrigeration manual shows how to interface a paragon defrost timer with the t-stat and evaporator coil.

Oct 21, 2012 | Paragon 8145-20 Defrost Timer

1 Answer

How i can do the instalation


1) Need more information.
Heres some help to get you started, then you add a comment and fill in details so I can give accurate answer.

2) You posted under Paragon 7008-00 timer.

3) People post under Paragon when they have Tork, so I need exact model number and what voltage you have and what Load you are trying to wire.

4) Also what terminals appear on timer, since any timer can be in a box that is marked 7008.
Then add what color wires you have coming from breaker box, what size breaker, and if same breaker is going to supply voltage to timer and to Load, and what color wires are going to Load.

5) Open following link to identify timer for sure, and see manual and wiring diagrams.
http://waterheatertimer.org/Paragon-timers-and-manuals.html#7000

6) Typical wiring diagram for 7008 showing one set of NO NC terminals:
http://waterheatertimer.org/images/Paragon-7008-00-timer-wiring-350.jpg

7) 7008 timer has 120Volt clock motor. So power to terminals A and B has to be 120V.
But timer can still control 120V or 240V loads.

8) According to manual, 7008 timer has 2 NO (normally open) terminals that are OFF when timer is OFF
Timer also has 2 NC (normally closed) terminals that are ON when timer is OFF

9) Both sets of terminals reverse when timer turns ON.

10) NO and NC terminals are frequently used for continuous-operation 2-speed motors, for example.
You do not want power to both speeds at same time, or motor will burn out. So low speed is connected to NO terminal, and high speed is connected to NC terminal. This way the motors windings are kept separate, and either low speed is ON or high speed is ON.

11) Another example of NO NC terminals could be store lighting. When store closes, the timer turns off exit signs and store-room lights inside store, and at same moment timer turns on burglar alarm and outdoor lights. In this example the timer controlled 4 different circuits: exit signs, store-room, alarm, and outdoor lights. With 2-NO and 2-NC terminals, that is possible.

Apr 15, 2011 | Paragon Indoor Electromechanical Timer...

2 Answers

Wired incorrectly need wiring diagram


I have baxi combi boiler genesis 80 and grasslin timer need to no what wires go were there are 4 wires coming out the timer red and brown together white and blue the timer is internal one can you help

Mar 18, 2010 | Intermatic Grasslin KM2ST-2D Timer, 2 Gang...

2 Answers

Our TH132-AF keeps going blank and shutting down just as the heating element bars are due to show up on the display


Robbo,

I've had the same problem and it's due to the unit breaking down due to a 'snubber' not being fitted to the contactor (across the coil). It's a small resistor/capacitor that smooths the switching load coming from the stat. Without it, the trickle feed coming from the stat makes the contactor's coil bounce and damages the stat. Tracking one down, however, is proving to be a problem, as no-one seems to have them in stock. I have found one now, though from elementshop.co.uk here:

http://www.elementshop.co.uk/product.php?pid=1022&cat=251&nm=

Dec 03, 2009 | Intermatic FD60MH Energy Controls -...

1 Answer

My daughter has a Baxi Combo 105e fitted with an optional timer. I believe that the timer is possibly a Grasslin although it has no name on it. Although the clock goes round, the Central Heating doesn't...


I have a Baxi Combi 105 HE boiler that has just been fitted and it has the optional 7 day digital timer but no instructions on how to set it does anyone know where I could get them from. Many thanks

Feb 21, 2009 | Timers

Not finding what you are looking for?
Intermatic T104-20 Indoor Hot Water Timer Logo

Related Topics:

72 people viewed this question

Ask a Question

Usually answered in minutes!

Top Intermatic Timers Experts

Jay Finke
Jay Finke

Level 3 Expert

1222 Answers

Steve

Level 3 Expert

3287 Answers

Hippy_dd

Level 2 Expert

90 Answers

Are you an Intermatic Timer Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...