There is apparently another glitch arriving using the Nest. As time passes battery pack voltage falls and requirements to be recharged. It pulls a large amount of current when it goes into that recharge mode. I am hearing rumors that a maximum of two Nests per 40 VA transformer.
2 Nests per 40 VA.Been here, Done that.
Have six Nests in the home.
We have one running on A sr-506 that is old with in the areas that just had 18-2 operating for them.
one other areas are driven through the Air Conditioning region of the Nest.Absolutely no problems with fall outs. The thermostats are 99 % available regarding the application.
On clients systems, we make an effort to pull at the very least 5 cable, frequently seven cable. I quickly can power it any means we want. Even when the Nest is doing temperature, it could be driven through the AC part. Yes, the therm acknowledges a combi system, however it is, and contains been an excellent workaround.
I’ve a couple of words on vapor out there likewise that is powered an 18VA transformer installed on a 1900 field from the boiler.
Your post right right here actually caught my attention. We have a 3 area setup with TACO zone valves. 2 are controlled by NEST thermostats, 1 with a old-fashioned thermoregulator. We have just 2 cables operating towards the NESTs and have always been getting a buzzing when you look at the NESTs once they take capacity to charge their battery pack. Changing the cables is simply too foreign brides complicated. Alternatively i’m about to feed energy from the transformer near to each NEST into C and Rc.