HVAC Delay On Make Timer (How it works & How To Wire) Compressor Staging/Startup Delay Timer

Today we will go over what is a HVAC delay on make timer and how it works, how to wire the delay on make timer and when to use a delay on make time delay for an air conditioning or refrigeration system.

ICM Controls ICM102 DOM Timer

2 wire compressor staging/startup delay timer made by ICM CONTROLS (ICM102)

Delay on Make Timer with .03-10 minute adjustable delay, universal 18-240 VAC

When power is applied to the input, the
time delays begins. After the time delay is
complete, the load energizes and remains
energized as long as power is applied. The
control is reset by removing power during
or after the time delay period.

[wiserdaley]

You're an excellent teacher. Lots of other channels make the same topic seem soooo complicated and hard to grasp. I wish I had you to teach all my classes... then I'd have all the Aces in the deck 💯👍

[BlackBirdMax]

Plumber here: just used a time start delay you described as a temporary fix for a broken control panel for a lift station. Used a single float from the pitt, to one of the contactors, and the float to the time delay. Works great and the pump is not short cycling.

[LetsDIYIt]

This is the best explanation of an A/C circuit I've seen. Great video.

[izzybell]

Good tutorial. Interesting subject. As always good job. Be safe. ⭐️⭐️⭐️⭐️⭐️

[EyesofIllusion]

Very helpful and especially the diagram while you were explaining 👌

[davidblue]

Nice tutorial and very detailed! You are very gifted in communication skills. You should be teaching at a Tech college making lots of money Jumper Man.

[peterwilliams]

very useful gadget for any application, on my main switch i added a system with contactors and time delays on make and break, so any time there is power outage these time delays prevent the inrush when there is no one at home. after the set time on make then the contactors drop and the other energizes, in this way when the city power goes and come your appliances is protected from inrush voltage. Thanks for the lesson on the use of time delay.

[gerardolopez]

Waow didnt know those things were so cake to install. Never had to install one but now I know ez.

[diegocatacutan]

Wow! It's so clear and easy to follow, thanks.

[levarcheatham]

You are the future thank you so much jumper man tech

[phototec]

Hey Jumper man Tech, I am not a HVAC tech person, just a regular guy with a question about what kind of timer I need.

My situation is as follows, I have a zoned HVAC system (at least that is what I call it), I have a 3.5 ton Lenox heat pump that supplies most of the living space in my house and then a separate 2.5 ton Lenox heat pump that supplies the 4 bedrooms. I am 74 and me and the wife are retired and to save money we only run one system at a time. Mostly during the day when run the 3.5 ton unit, and then at night when sleeping we run the 2.5 ton system.

Sometimes we need to run both systems, but not at the same time, we run one system for an hour, then turn it off and run the other system for an hour and keep cycling this process which tends to make the whole house comfortable without running both units at the same time (which uses lots of electricity)

So, I am in search for one central timing device (timer) that I can set to turn ON one HVAC system for an hour (or whatever time I like) while the other system is OFF, and then after an hour, it would switch units turning one OFF and the other system ON (from ONE timer).

I know I will have to add a relay to each unit to take the START/STOP signal from the timer and then in turn that would cycle the HVAC systems one ON and the other OFF and then after an hour the time r would reverse the systems.

What kind of time do I need? Thanks

[mjsadiq]

Great video dear sir please upload all safety controller video....thank you & god bless you...

[michaelminihan]

Again another Great learning video. 👍
Blessings, and Thanks so much for sharing 🙏.

[johnhansen]

Your videos are great, thank you for taking the time to make this content! Where would this DOM typically be installed? At the air handler or outside at the condenser? I have two units and one t-stat, would like to delay one to minimize voltage drops when they both kick on at once. Thanks in advance!

[dougfelsenthal]

Yes, this helps, I have a Essex 133 make delay, I'm trying to test if they are good for a staged electric furnace control. My mystery was how the circuit was completed. In your diagram, it seems like the contactor coil is the circuit completion. Can you give some idea of how much resistance is in a contractor coil? Or can it be zero. Then I can see if I can make a test rig on the bench. I look forward to your opinion. Tx

[PJ-eemc]

Hey, Jumper man: Great video. Thank you! I am trying to find a way to briefly delay the start of my small irrigation pump so that there will be time for the water valve to open first (better for the system over all). The sprinkler controller provides 24 volts AC to activate a 110V pump relay. If I install this unit that you are showing 'inline' on one of those 24 volt AC wires will that work to give me a programmable delay to the pump relay? Thanks for any confirmation you can provide and keep up the great work.

[tp]

This is excellent. Can you create a similar guide for a two thermostat one compressor system?

[-._MXN]

Great video. Question: can this also be installed on a freezer compressor?

[mamumonkan]

Hello there, we have problems with Voltage fluctuations, where the voltage dips briefly and then comes back on right away. This causes my AC compressor many problems, so I installed a ICM Delay on Make Timer. The strange thing is that the timer does not cut out at those dips but only delays once the electricity goes off completely ( same counts for the built in delay in my Air handler thermostat. So here my question : would a Ditek Surge Protector be a solution or do I need to install something else ? Thank you so much !

[soundaryakotagiri]

This is very helpful, can we use the same circuit for Delay On Break Timer as well. Intercepting the wire from T-Stat Y and the contactor ?