Nest thermostats & Taco SR-504 Switching Relay. Any experience or information on that concern?

Nest thermostats & Taco SR-504 Switching Relay. Any experience or information on that concern?
Commentary
There appears to be another glitch arriving aided by the Nest. Over time battery pack voltage falls and needs to be recharged. With regards to goes in that recharge mode it brings a lot of present. I am hearing rumors that the maximum of two Nests per 40 VA transformer.
2 Nests per 40 VA.Been here, complete that.
Have actually six Nests in the home.
We have one operating on a classic sr-506 with resistors regarding the areas that just had 18-2 operating for them.
one other areas are driven through the Air Conditioning part for the Nest.Absolutely no problems with fall outs. The thermostats are 99 per cent available from the software.
On clients systems, I you will need to pull at the least 5 wire, often seven cable. I quickly can power it any means I want. Even when the Nest is just doing temperature, it may be driven through the AC side. Yes, the therm recognizes a combi system, but it is, and has now been a workaround that is great.
We have a few Lyrics on steam out there powered likewise with an 18VA transformer installed on a 1900 package from the boiler.
Your post right here really caught my attention. We have a 3 area setup with TACO zone valves. 2 are managed by NEST thermostats, 1 by way of a thermostat that is traditional. I’ve only 2 cables operating into the NESTs and am getting a buzzing when you look at the NESTs once they take power to charge their battery pack. Changing the cables is simply too complicated. Rather i will be intending to feed energy from a transformer near to each NEST into C and Rc. Any experience whether this can work?
Did your overload that is NESTs the system transformer? My HVAC technology can be involved this could take place in my own setup.
“We have one operating on a classic sr-506 with resistors regarding the areas that just had 18-2 operating in their mind.” Which are the resistors for? […]