When your thermostat cables connect with terminals marked Th, Tr, and Th-Tr, these are generally most likely connecting to a gas valve.

Nevertheless, you will have to locate the wires linking towards the fuel valve and follow them into the transformer that is 24VAC the heating gear to recognize where your “C” connection will soon be. In the event that you need advice about this, be sure to contact ecobee help.

Merely link the free cable towards the typical connection point.

IF NO EXTRA is had by you WIRES

Should you not have any extra cables, you’ve got two choices:

• Run a extra cable at your thermoregulator down to your gear

• Purchase and put in a Fast-Stat Common Maker

ALTERNATE SOLUTION: 24VAC PLUG-IN TRANSFORMER

Another solution would be to power the ecobee with a outside 24VAC plug-in transformer.

This transformer may be attached to a wall surface, and will be wired the following:

• The transformer that is 24VAC would hook up to RC and C regarding the ecobee
• The 2 cables on the old thermostat would connect with RH and W1 from the ecobee

NOTE: Ensure the transformer is with the capacity of 24V AC production ( perhaps perhaps maybe not DC production)

Situation C:MY THERMOSTAT LINKS TO T/T TERMINALS

In case your thermostat cables hook up to T/T terminals, observe that you’ll need an independent 24VAC transformer to power the ecobee. You may even need components that are additional.

T/T connections usually suggest a link to a tool referred to as an Aquastat.

IF AN EXTRA is had by you CABLE

You will require an isolation relay and a separate 24VAC transformer if you have an extra wire.

ecobee requires an isolation relay with a 24vac coil and Normally Open (N/O) connections.

IF YOU’VE GOT NO EXTRA WIRES

For those who have no additional cables, you will need both a Fast-Stat popular Maker and an independent transformer that is 24VAC

ALTERNATE SOLUTION: 24VAC TRANSFORMER that is PLUG-IN

Another solution would be to power the ecobee having an outside plug-in transformer that is 24VAC.

This transformer could be connected to a wall surface, and will be wired the following:

• The transformer that is 24VAC would hook up to RC and C from the ecobee
• The 2 cables on your own old thermostat would connect with RH and W1 regarding the ecobee

NOTE: make sure the transformer is with the capacity of 24V AC output ( maybe maybe maybe not DC production)

NOTE (2): Some T/T connections might not work reliably whenever linked straight to the Rh and W1 terminals regarding the ecobee. If so, a 24 VAC transformer and isolation relay in the gear part could be necessary (see details under “WHEN YOU HAVE A SUPPLEMENTARY WIRE” above).

When you have a couple of thermostats managing your heat:

If for example the home heating is managed by a lot more than one thermoregulator, the body likely has area valves or perhaps an area control relay.

Please reach out to ecobee help utilizing the information that is following purchase to ascertain compatibility and appropriate installation directions:

• Exactly exactly How thermostats that are many have actually as a whole for the home heating
• Photos for the wiring at each thermostat
• Photos regarding the wiring at any area valves or area panels
• The make and model of each and every area valve and/or area panels
• The amount of additional cables which are behind the wall surface at each thermostat

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If you should be having trouble distinguishing your area valves or zone boards, some widely used manufacturers for zone valves/zone control gear consist of:

• Taco
• Honeywell
• Erie
• Energy Kinetics

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