Nest Thermostat 2nd generation JAILBREAK
If you want to get NEST Learning Thermostat
and you are outside of US, Canada and some EU countries, you have a
problem, since Nest does not ship their product to your country. You can
still get it, but it is a bit challenging.
UPDATE : electric boiler to enable external control of heating stages
I had to hack into my electric boiler to enable external control of
heating stages. Originaly it was controled manualy by micro switches on
the boiler. Solution : bridge the switches with relays :
Since I have now 2 branches of the heating (Ground and 1st floor), I integrated 2nd (not Nest) thermostat on 1st floor, heatpipe valves and timer relays. Since the boiler
Since I have now 2 branches of the heating (Ground and 1st floor), I integrated 2nd (not Nest) thermostat on 1st floor, heatpipe valves and timer relays. Since the boiler
Honeywell E-Connect Thermostat - High Voltage 120 - 240
E-Connect Thermostat - High Voltage 120 - 240
Model :: honeywell ytl9160ar1000
Build Your Own Wi-Fi Connected Thermostat
Open-source Compliance
Nest Open Source packages
Open source smart thermostats rise to compete with Nest after Google acquisition
Build Your Own Wi-Fi Connected Thermostat
Open source Android thermostat
new solution
I figured it was worth my time to tell about this new solution https://casaconnect.com.
It's called Caleo, it's made by CaSA and it will ship in Jan '15. In the meantime, there's a crowdfunding effort on Kickstarter to push development even further. Perhaps that's the workaround you need ?
It's called Caleo, it's made by CaSA and it will ship in Jan '15. In the meantime, there's a crowdfunding effort on Kickstarter to push development even further. Perhaps that's the workaround you need ?
Nest Thermostat High Voltage Hack | Installation [High Voltage Conversion]
I
am a licensed electrician that specializes in commercial building
automation, lighting controls, fire alarm and security systems. I enjoy
my work and these type of gadgets intrigue me.
My Home:
I
live in a townhouse style of condo which has 3 thermostats that
controls a local 240v unit heater. It's about 1,100 sqft and was built
in the 80's.
My Problem:
Programmable line voltage thermostats are expensive and "smart" thermostats do not exist.
WARNING: THE FOLLOWING CONTENT IS FOR INFORMATIONAL PURPOSES ONLY
24V transformer to drive Nest
Just add one of these - a switching relay - which also includes 24V transformer to drive Nest:
Aube RC840T-240 On/Off Switching Electric Heating Relay with Built-in 24 V Transformer - Amazon.com
Aube RC840T-240 On/Off Switching Electric Heating Relay with Built-in 24 V Transformer - Amazon.com
Nest Thermostat to control line voltage electric baseboard heaters?
Is there a work-around for the Nest Thermostat to control line voltage electric baseboard heaters?
I just installed my Nest V2.0 thermostat yesterday - it is controls our oil furnace, which is actually a back-up system to electric baseboard heaters that are the primary heating system. I know you can't directly connect Nest to a line voltage thermostat, but is there a way to add a step-down transformer (or something similar) between the Nest and line-volt thermostat to get around this limitation?
I just installed my Nest V2.0 thermostat yesterday - it is controls our oil furnace, which is actually a back-up system to electric baseboard heaters that are the primary heating system. I know you can't directly connect Nest to a line voltage thermostat, but is there a way to add a step-down transformer (or something similar) between the Nest and line-volt thermostat to get around this limitation?
Convert line voltage heating system to use low voltage thermostats
I currently have two line voltage ceiling radiant heating systems in my
condo each with their own DPST thermostat. I'd like to use low voltage
thermostats such as the nest. I found this transformer/relay,
but it only has 3 wires. Will this work with a system designed to use
DPST thermostats? If not, is there something else out there that will
allow me to use low voltage thermostats with line voltage heaters?
A.)
A.)
The device you linked to will work. You are essentially converting to
a SPST "thermostat" from your current DPST thermostat. Some people feel
a SPST thermostat is dangerous because the heating device is always
connected to a hot leg of the power mains. Both legs are disconnected
with a DPST device. Yet this SPST practice is common and acceptable in
many jurisdictions. It's quite safe, there is no way to contact
energized components in a proper installation. And when the heat is on,
all components are energized under either system, and yet it's still
safe.
The only conceivable danger is if someone assumes it is a DPST system and foolishly attempts to work on the heater without turning off the power at the breakers. If you're OK with this marginal increase in risk, check with your local building authority, ask them if you can use a single pole line thermostat on a 240 volt (assuming US/Canada voltage system) resistive heater. The remaining details aren't pertinent.
If all is OK, the device's installation instructions are fairly clear on how to hook up both 2 and 3 wire low voltage thermostats. Just ensure you order the correct device for your heater's voltage and power or current rating. To be safe, the device rating should be 125% more than your heater's actual power or current draw.
If you or your building authority do not like SPST type installations, you should be able to find a similar relay that is DPST, even if you have to supply the transformer separately. Any possible solution will certainly involve some combination of transformer and relay, it's just a question of packaging and proper ratings.
The only conceivable danger is if someone assumes it is a DPST system and foolishly attempts to work on the heater without turning off the power at the breakers. If you're OK with this marginal increase in risk, check with your local building authority, ask them if you can use a single pole line thermostat on a 240 volt (assuming US/Canada voltage system) resistive heater. The remaining details aren't pertinent.
If all is OK, the device's installation instructions are fairly clear on how to hook up both 2 and 3 wire low voltage thermostats. Just ensure you order the correct device for your heater's voltage and power or current rating. To be safe, the device rating should be 125% more than your heater's actual power or current draw.
If you or your building authority do not like SPST type installations, you should be able to find a similar relay that is DPST, even if you have to supply the transformer separately. Any possible solution will certainly involve some combination of transformer and relay, it's just a question of packaging and proper ratings.
20VA 120/20/240 Volt 24 Volt Secondary 2 ft. Mount Transformer
20VA 120/20/240 Volt 24 Volt Secondary 2 ft. Mount Transformer
PRODUCT OVERVIEW
Model # PF42420
Internet # 203565056
This universal transformer will replace models with equal or lower VA ratings. Foot-mount UL listed class II transformer. Designed for over 60,000 hours of continuous use under normal load conditions.
8 in. Wire length
Output 20VA
Primary Voltage 120/208-240
Secondary rating 24 Volt
http://www.homedepot.com/p/Packard-20VA-120-20-240-Volt-24-Volt-Secondary-2-ft-Mount-Transformer-PF42420/203565056?MERCH=REC-_-PIPHorizontal1-3-_-NA-_-203565056-_-N
PRODUCT OVERVIEW
Model # PF42420
Internet # 203565056
This universal transformer will replace models with equal or lower VA ratings. Foot-mount UL listed class II transformer. Designed for over 60,000 hours of continuous use under normal load conditions.
8 in. Wire length
Output 20VA
Primary Voltage 120/208-240
Secondary rating 24 Volt
http://www.homedepot.com/p/Packard-20VA-120-20-240-Volt-24-Volt-Secondary-2-ft-Mount-Transformer-PF42420/203565056?MERCH=REC-_-PIPHorizontal1-3-_-NA-_-203565056-_-N
Converting to low voltage thermostat
So
I recently purchased a condo in a cold weather climate. Everywhere I've
ever lived has had central heat/air. My new place has central heat and
air conditioning, but it also has some baseboard heaters in the living
room. I'm from the South and have never had a heater like this, but it
has a knob with a water stain beneath it. I give this info because it
might be important for what I want to do (or hopefully won't be at all).
This place was built in the 60s and has what is likely the original thermostat still installed: a Honeywell T651A thermostat. Here is is new, and here is what mine looks like now without the cover. It works perfectly (as far as I can tell). It cools, and it heats. However I want to get with the times and install a programmable, low-voltage thermostat system. Options for new line voltage thermostats don't accomplish what I want.
So, my set up is this thermostat on the wall, AC intake and motor/fan in the ceiling above it, and wired to my breaker box which is in another room. There is only this thermostat in the condo.
Question is, what is the process for converting to a low voltage system? I'm literate and can read/figure out wiring diagrams/do basic wiring, but I want to understand what parts I'll need and whether it is difficult so I know if I can do this myself. What would it take, and could I make to where something like the Nest thermostat could be used?
This place was built in the 60s and has what is likely the original thermostat still installed: a Honeywell T651A thermostat. Here is is new, and here is what mine looks like now without the cover. It works perfectly (as far as I can tell). It cools, and it heats. However I want to get with the times and install a programmable, low-voltage thermostat system. Options for new line voltage thermostats don't accomplish what I want.
So, my set up is this thermostat on the wall, AC intake and motor/fan in the ceiling above it, and wired to my breaker box which is in another room. There is only this thermostat in the condo.
Question is, what is the process for converting to a low voltage system? I'm literate and can read/figure out wiring diagrams/do basic wiring, but I want to understand what parts I'll need and whether it is difficult so I know if I can do this myself. What would it take, and could I make to where something like the Nest thermostat could be used?
Aube RC840T-240 On/Off Switching Electric Heating Relay with Built-in 24 V Transformer
Aube RC840T-240 On/Off Switching Electric Heating Relay with Built-in 24 V Transformer
Relay is Compatible with Low Voltage Thermostats to Improve Temperature Control and Comfort
- Direct replacement for any brand name relay
- Built-in 24 V transformer for easy installation
- Compatible with 24 V thermostats with 2-wire connections (R, W) or 3-wire connections (R, W, C)
- Immediate relay activation provides improved temperature control and comfort
- Epoxy-soundproofed relay ensures quiet operation
- Low current consumption means multiple relays can be controlled by a single thermostat
- Heating command indicator light gives at-a-glance verification of relay operation
- Terminal board connection enables easy installation
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