Navien NPE Hot button and Navlink

[Derf]

Hello,
After installing a “hot button” on my Navien 240, I lost the weekly setting schedule.
After reading all the documentation, it states the hot button doesn’t allow any form of scheduling. Is that correct or is there a work around? I thought, what a great idea, install a hot button, use if needed when hot water required before normal program. Why waste gallons of water. Now, think I wasted money on the hot button and will continue wasting water.
Thanks in advance,
Fred

 

[John Gayewski]

Hello,
After installing a “hot button” on my Navien 240, I lost the weekly setting schedule.
After reading all the documentation, it states the hot button doesn’t allow any form of scheduling. Is that correct or is there a work around? I thought, what a great idea, install a hot button, use if needed when hot water required before normal program. Why waste gallons of water. Now, think I wasted money on the hot button and will continue wasting water.
Thanks in advance,
Fred

No the hot button is to replace the schedule. Your supposed to use it every time. I always thought it was a dumb idea, but surprisingly people like the hot button.

 

[Sponsor]

 

[Derf]

No the hot button is to replace the schedule. Your supposed to use it every time. I always thought it was a dumb idea, but surprisingly people like the hot button.

John,
I agree, if the hot button is designed to be activated every time when hot water required, it is not a great product. I was hoping it would have worked with a schedule, activated if hot water need before schedule turn on circulation pump is turned on.
Knowing now what I know, probably would have setup a programable WiFi switch on the circulating pump.
Thanks

 

[Dradam]

work around:

Get rid of the hot button and pcb.
Set your unit to automatic not learning.
enable your weekly schedule as you see fit. Schedule option returns in the app when the hot button is gone.

Now if you disable your schedule in the app (orange slider is dark) the unit will return to automatic recirculation and begin a circulation cycle. When done turn on the schedule slider again (turns orange) and the schedule resumes and auto circulation will stop.

 

[Reach4]

Hot button sounds like a good idea to me for a bathroom, but I guess you would need more than one button. What is the delay before hot water is ready?

The button should be most energy-efficient, if the users are regular users, but would add confusion for guests...

 

[Dradam]

Yes hot button alone likely most efficient- guests would still get hot water as the unit senses flow regardless it just will take longer to see hot water unless you use the hot button first.

I only used a hot button for a short time but as I recall it was app based. If so anyone on your account with the app could use it. I got rid of it because I wanted to run a schedule and have hot button abilty too. Hence the work around I posted. It is beyond me why even 8 years after my install Navien can not offer a schedule as well as a hot button in the same app. Just turning off the schedule has the same effect.

Delay before hot water will depend on the length of your recirculation loop If you have one and the sensing parameters you set. Time between sensing, cut of temp, duration of circulation, duration between circulations. I posted these a while ago for my setup and you should be able to locate them under my name. It takes some playing with. If durations are too short the unit will be almost always on during a scheduled recirculation.

I have a long home with my shower at the opposite end of the house from the NPE. During a scheduled recirculation cycle it takes about 4 seconds for my water to be hot. When outside of the schedule and not recirculating it takes about 70 seconds.

Hope this makes sense. hope it helps.

 

[Tanklees]

Someone posted online a nice solution that I copied. There is a key fob style relay you can buy for cheap. Then wire that up to the hot button. You then have wireless hot buttons.

I took that a step further and added a Switchbot bot unit to press the remote. Then hooked that up to Alexa where the button press is on a schedule (routine) and I can also ask Alexa to "turn on the hot water" from anywhere Alexa is. Solves my on-demand & schedule needs.