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How to install firemans switch entire 400hd

How to install firemans switch I have a timer to start the pump would like turn off heater 20mim befor pump turns off

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If the timer has the fireman switch attach the 2 wire to the heater and the fuse panel inside you will see a fuse with a yellow jumper wire ,remove the jumper and connect your switch

Posted on Dec 11, 2014

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I upgraded my Jandy RS controller to run Jandy epumps and installed a new Pentair Mastertemp 400HD heater. Prior to connecting the pool heater thermostat all worked perfect. all instructions stated to...


bad info firemans switch is continuity only if hooked up to firemans switch run new wire from each end of firemans switch to pins 1 and 2 of long plug along top of PCB board make sure to read inside schematic for dip switch positions firemans switch to control heater on and off you will have to turn heater all the way up max setting for temp

Jan 16, 2015 | Jandy AquaLink RS OneTouch Wired White...

1 Answer

I want to know how to set the time on my swimmimg pool timers


Hello Gerhard
1) Unknown brand name pool timer, probably Intermatic:
Unknown if this is mechanical timer, or digital, or remote control, or air activated. Or if this is control center with circuit breakers and multiple timers to control heater, and pool pump, or if unit has firemans switch to turn pool heater off 20 minutes before pool pump, or if unit has freeze protection thermostat, etc
http://waterheatertimer.org/pdf/How-to-operate-and-set-T104-timer.pdf
http://waterheatertimer.org/Intermatic-trippers-and-parts.html#pool

2) For Tork:
http://waterheatertimer.org/Tork-Pool-timers-and-manuals.html

3) Jan 2013.
Add a comment with model number or attach photograph and add any other information available for best possible answer based on specific product.

Jan 02, 2013 | Hardware & Accessories

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I NEEDAND CAN'T FIND DIAGRAM FOR THE INTERMATIC T101P201 FIREMAN SWICH


1) T101P201 timer does not have a separate manual yet
http://www.poolandspacontrols.com/products/mechanical%20time%20switches/pool%20and%20spa%20time%20switches.aspx

2) However typical T101P201 timer is ordinary T101 timing mechanism inside Nema 3R beige-colored outdoor plastic enclosure, with additional fireman's switch.
Wiring for T101 shows on following link, and shows on door of timer enclosure:
Check that your timer terminals match illustrations because many timers can fit inside Intermatic enclosures.
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T101

3) Fireman switch wiring:
T101P201 has a fireman's switch that wires directly to the pool heater thermostat.
http://waterheatertimer.org/pdf/Intermatic-Firemans-switch-156T4042A.pdf
If you are not using the timer for pool heater, or if heater does not have connection for fireman's switch, then do not connect fireman switch wires, and just tape them out of the way.

Add a comment for more information

Jun 16, 2011 | Intermatic & Indoor/Outdoor Rain Tight...

1 Answer

I've installed a intermatic t101p201 which has a heater delay circuit - but can't get power to the heater through the delay switch when i turn the switch manually on - i haven't checked yet to...


Check that your pool heater supports optional fireman's switch
Black wires on firemans switch connect to pool heater. Power to fireman switch comes from pool equipment and not the timer.
If pool equipment does not support fireman, then cap off the wires.

Fireman switch turns off heater 15-20 minutes before turning off pump.
The purpose is so pool equipment lasts longer.

You can buy the fireman's switch separately, but if this is new timer, then switch is probably good.
Open following link to identify fireman's switch and related parts for the timer:
http://waterheatertimer.org/Intermatic-trippers-and-parts.html#fireman

Upvote the help.
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

May 30, 2011 | Intermatic HEATER DELAY SHUT OFF SWITCH...

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My timer for my water feature looks like your Intermatic T101R3 timer. I do not have an instruction manual. Can you e-mail me some simple instructions for using this so I won't get charged an...


T101R3 is outdoor pool timer with fireman's switch.
Some are double-pole, some are single pole, some are 240V and others are 120V.
They each look like the other so eyeball identification is not enough information.
The model number should be inside door of timer.
http://www.poolandspacontrols.com/products/mechanical%20time%20switches/pool%20and%20spa%20time%20switches.aspx
http://www.intermatic.com/products/timers/mechanical%20time%20switches/24%20hour%20dial.aspx
http://www.intermatic.com/customer%20service/instruction%20manuals.aspx

I have been unable to locate manual specific for these products, and I have looked.
I was looking yesterday for this instruction manual.
Some wiring diagrams appear on following page, but again it depends on your specific model
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html
http://waterheatertimer.org/Intermatic-trippers-and-parts.html#T100

The T101R series is designed to control pool pump and pool heater.
Fireman's switch automatically turns off pool heater 20 minutes before pool pump is scheduled to turn off.
So you set the trippers on dial, and then the fireman's switch does the rest automatically.

Add a comment with in-focus photo of inside of timer door and I can put together all the information and simplify instructions. Put your digital camera in 'macro' with the flower-symbol to take close-up photos. Photo has to be in focus so I can read information and see wiring schematic.
http://www.fixya.com/support/r6568559-post_photograph_fixya_questions_answers

Apr 20, 2011 | Hardware & Accessories

1 Answer

Hi expert: I am installing intermatic P1353me digital pool or spa mechanism and having trouble to figure out how to do this heater Firemen Switch connection. My existing pool timer is T104 and there were...


1) Fireman's switch automatically turns off heater few minutes before turning off pump.
Not all pool timers have fireman's switch.
If old timer did not have it, then don't worry about it.
P1353 has wires marked for fireman's switch, so simply don't use them if you don't want to.
http://waterheatertimer.org/pdf/Intermatic-P1353-manual.pdf
page 21 of manual shows wiring for fireman's switch.

2) T104 and P1353 comparison
Difference 1: T104 turns OFF both hot wires, while P1353 turns Off 1 hot wire.
http://waterheatertimer.org/Compare-120-and-240.html
Difference 2: T104 controls 1 240V load with 1 time schedule, while P1353 controls 3 different 240V loads, each with different time schedule.
Check that wire(s) coming from breaker can handle all 3 loads.
http://waterheatertimer.org/Color-codewire.html

3) 240Volt T104 is wired as follows:
http://waterheatertimer.org/images/T-104-240-Volt-400.jpg
Hot1 from breaker connects to T104 terminal 1
Hot2 from breaker connects to T104 terminal 3
There is constant power on terminals 1 and 3, each terminal has 120V when combined makes the 240V circuit.
Load1 wire connects to T104 terminal 2
Load2 wire connects to T104 terminal 4
Terminals 2 and 4 have power whenever timer turns ON

4) Definition:
In electric wiring, Line means power from breaker, and Load means wire going to light,fan, motor, pump.

5) Converting T104 to P1353
http://waterheatertimer.org/images/P1353-timer-350.jpg
http://waterheatertimer.org/images/P1353-terminals-566.jpg
Hot1 from breaker connects to P1353 terminal 1
Hot2 from breaker connects to P1353 terminal 2
This will power timer electronics and timer clock and switches.

Jumper wire is placed from Hot1 at terminal 1 to each Line terminals 3 5 and 7.
This will put power at the switch, and when switch turns ON, then power will flow from Line wires to Load wires and then on to the Load.
Load 1 connects to terminal 4, Load 2 connects to terminal 6, Load 3 connects to terminal 8
To complete each 240V circuit, Hot2 is connected directly to each Load.

6) You say 'salt' system connects to terminals 1 and 3 on T104, then those wires are carrying constant 240V to that device. So Salt system connects to terminals 1 and 2 on P1353

7) Get a second opinion:
I frequently contact Intermatic for various problems.
P1353 is fairly new product, and manual is long, and I might not fully understand your problem or wiring.
Intermatic answers their email.
http://www.intermatic.com/customer%20service.aspx

Add a comment for more free help.
Also take advantage of fixya phone service.
For a price, expert speaks with you over phone while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

Jan 28, 2011 | Intermatic Digital 3-Circuit Timer...

1 Answer

I am installing an intermatic t104m with firemans switch.I hooked up the switch to the pool heater and no power to heater?


Add a comment and provide more information.
A lot of factors need to be narrowed down.

Did everything work fine before connecting fireman burn-out protection switch?
What happens when you disconnect switch?
Is the timer rotating?
Does the manual override work?
Is this a new installation?
This sounds like a dual T-104 pool timer that controls more than the heater, what else is controlled, and do the other Loads work correctly?

Nov 19, 2010 | Intermatic HEATER DELAY SHUT OFF SWITCH...

2 Answers

Turn heater for pool while pump in on, everything is fine, pool heats then when timer stops pumping, the heater will stop but the digital temp climbs,on display and eventually goes on the display...


When the system shuts down the water inside the heater collects residual heat in the heater. For most systems that have intermatic timers (yellow dial) you can get a fireman's switch kit that will shut the heater off about fifteen minutes before the pump goes off to let it cool down. If you have electronic controls you should have one built into the system and will just have to activate it.
No promises but this could cause problems with time.

Oct 30, 2010 | Sta Rite 200k Btu Nat Gas Heater Maxetherm...

1 Answer

JUST PURCHASED A LAARS LJ250 ELEC PROPANE HEATER. IWAS SURPRISED THAT A FIREMANS SWITCH IS NECESSARY, BUT NOT INCLUDED. CAN I RUN IT WITHOUT THE SWITCH AS LONG AS i HAVE THE PUMP RUNNING CONSTANTLY?


A fireman's switch is not required, and usually not even "recommended". It is usually mentioned in the instructions only in the event you want to hook it up. The switch is actually a remote tied to a timer that turns the heater off ~20 minutes before the pump to save the gas and use up the remaining heat energy in the exchanger as the pump finishes it's cycle.

Jun 26, 2009 | Pool & Spa

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