Help hooking up Smart Thermostat

[Rod N]

Hi Guys,
Can I get some direction on hooking up my Modine gas heater to a Energate smart thermostat please? I've hooked up thermostats to house systemsbefore, but I'm not sure what I should leave off for no air-con.
Currently running an old manual thermostat, but when I connect the red and yellow wires in use on it to the new one it powers up but does not turn the heater on and resets itself after 15 sec. or so.
The writing on the thermostat panel is how I had it hooked up to my heat/air-con at work.
Thanks
Rod

 

[Rod N]

Stats and heater

 

[Jack D]

Smart Thermostats can run a conventional 2-wire furnace but it must be powered by a battery. If the smart tstat doesn't have a battery to power it as soon as the wires are closed to turn on the furnace it looses the 24v from the furnace.

The wiring instructions need to specifically state it can be used on a conventional 24v 2-wire system.

 

[Stuff]

From their manual: "Energate thermostats require a common wire." Installation-Guide-For-Energate-thermostats

You need to hook up a third wire - the C one - on both ends and you should be fine.

 

[Rod N]

Thanks for the info.
I figures I need a 3rd wire for power.
Stuff. Can you be more specific please?
C and R on the thermostat was what I tried. Where do I hook up the 3rd wire?
I don't want to go with trial and error in fear of running 24 volts to the wrong connection on the thermostat and frying it.

 

[manwithtools]

Take a look at page 27 of the manual that Stuff linked to. Three wires are C, R and W1.

 

[Rod N]

Take a look at page 27 of the manual that Stuff linked to. Three wires are C, R and W1.

Great thanks.
Is the 4th wire (G) for being able to run the fan on it's own?

 

[manwithtools]

Yes, but not all unit heaters support that. I started to mention that but did not want to confuse things.

 

[Rod N]

All good! Thank you!

I'd invite you over for a garage beer, but the distance might be a problem.

Now to figure out how access it through WiFi.

 

[manwithtools]

Virtual beers work too, good luck.

 

[BD1]

I hate that new technology BS, old style set it and leave it.

Neighbor tried to wire one for his in home unit and blew the transformer.

 

[Rod N]

I hate that new technology BS, old style set it and leave it.

Neighbor tried to wire one for his in home unit and blew the transformer.

I know it can be frustrating, but very handy in this case.

Now I can turn the heat up in the garage remotely when I know I will be in there that evening. I can also check to see if I forgot to turn the heat down. I've had times were i wasn't in the garage for days only to find out I'd forgotten to turn it down.

 

[Rod N]

Is it a good idea to use this thicker gauge wire?

 

[manwithtools]

Can't hurt, especially if you have far to go.

 

[Jack D]

That is way overkill. All you need is 18 gauge and if you use larger you may not be able to attach the wire to the thermostat.

 

[Stuff]

Most thermostat cables you can buy use 18 gauge wire - that is what it looks to me in post #13. The original looks thinner, almost like cat 5 data cable which can be 24 gauge. For shorter runs and electronic controls it doesn't much matter.

 

[manwithtools]

I thought the wire in post #13 looked like typical thermostat cable as well. Most likely 18ga, certainly no larger.

 

[Jack D]

Most thermostat cables you can buy use 18 gauge wire - that is what it looks to me in post #13.

I have been running some 18 gauge wire for thermostats in my detached garage and it looks bigger for some reason. I guess I looked at the size compared to the head of the stripper and made a judgement on that.