Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.
Question on T-stat wiring on a Weil McLain Steam Boiler
Chris_108
Member Posts: 23
Hi guys,
I am a bit confused on my basic 2 wire steam heat T-stat wiring.... At the T-stat I have 2 wires: 1 going to R terminal and 2nd wire going to R/RC (jumper between R & RC)
so at the transformer on my Weil McLain Peg steam boiler the wires connect to terminals other then W & R. The W wire connects to Y terminal and the R wire connects to the G terminal. I always thought they should correspond the the same terminals at both ends? Am I mistaken?
Reason I am asking is I would like to replace my basic honeywell basic programable T-stat with a Ecobee 3 lite that I bought over a year ago but never hooked it up.
I realize Ideally I need a common wire which I don't think I have so I will need to look at the various options available but before I start to mess with this I want to make sure my existing wiring is ok and to be clear everything currently works as it should but was just surprised to not see the W and R terminal utilized on the transformer...
Any help is greatly appreciated...
thx in advance,
Chris
I am a bit confused on my basic 2 wire steam heat T-stat wiring.... At the T-stat I have 2 wires: 1 going to R terminal and 2nd wire going to R/RC (jumper between R & RC)
so at the transformer on my Weil McLain Peg steam boiler the wires connect to terminals other then W & R. The W wire connects to Y terminal and the R wire connects to the G terminal. I always thought they should correspond the the same terminals at both ends? Am I mistaken?
Reason I am asking is I would like to replace my basic honeywell basic programable T-stat with a Ecobee 3 lite that I bought over a year ago but never hooked it up.
I realize Ideally I need a common wire which I don't think I have so I will need to look at the various options available but before I start to mess with this I want to make sure my existing wiring is ok and to be clear everything currently works as it should but was just surprised to not see the W and R terminal utilized on the transformer...
Any help is greatly appreciated...
thx in advance,
Chris
0
Comments
-
Can you post some pics of what you have, and the wiring diagram?
Should be R and W at the thermostat, and R and G at the fan center control but Y could also be used in the circuit.0
Categories
- All Categories
- 86.6K THE MAIN WALL
- 3.1K A-C, Heat Pumps & Refrigeration
- 54 Biomass
- 423 Carbon Monoxide Awareness
- 98 Chimneys & Flues
- 2K Domestic Hot Water
- 5.5K Gas Heating
- 101 Geothermal
- 157 Indoor-Air Quality
- 3.5K Oil Heating
- 64 Pipe Deterioration
- 931 Plumbing
- 6.2K Radiant Heating
- 384 Solar
- 15.2K Strictly Steam
- 3.3K Thermostats and Controls
- 54 Water Quality
- 42 Industry Classes
- 48 Job Opportunities
- 17 Recall Announcements