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Two Thermostats, One Zone

can i hook up two thermostats to one furnace

Rinnai expands programs for trade customers. I set the basement thermostat to reset to 10C every morning, just in case I forget to turn it off. I ran to Home Depot to grab some thermostat wiring and hooked it up in parallel with the nest. Join them; it only takes a minute: I see you haven't received any responses.

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I have a one zone HVAC system on a two-storey-plus-basement setup. If you need the bedroom a few degrees cooler in the summer, lower the setpoint for sleeping. It has a "run schedule" button on it, so when I run up the stairs all i have to do is push it and it will revert back to 10C. You could cause problems. I'm thinking now that with a few diodes and a relay this may be relatively easy except for the fact that you may need to control the compressor, fan, and gas burner separately. Questions Tags Users Badges Unanswered.

You might need to isolate the 2 thermostats from each other. What kind of thermostat do you have currently? I'm always confused, FWIW, but don't all of the low-voltage hot wires generate from the same source, and all the neutrals return to the same point? What diff does it make if two Tstats' hot wires meet at the relay? Nothing will happen, since they already "met" at the source, right?

I don't see a problem. I'm not sure off hand either - I'm not sure just what they use for output circuitry in those thermostats, but I DO know that the instructions on several that I've looked at SAY don't attempt to fire off the furnace by shorting the thermostat leads at the burner Which is a fairly standard trick used by many burner techs, and which is fine on something controlled by one of those old round Honeywell mercury stats.

I do know that I've had electronic stats that have failed to work right after that was done. Putting two stats on the same contacts is going to be doing effectively the same as jumping the contacts for the one that doesn't turn on first Some day, when I grow up, I am going to learn more Off to the sack.

BTW, if I remember, those instructions about not hot jumping are generic, and somewhat archaic, too. This induced a magnetic resonance in the capillary thermisters, that, if it became harmonic, would cause them to explode, like the original crankshafts on the experimental 3-cylinder Mercedes engine many years ago that is why it never came into mass production.

It was not a pretty site, and too many boiler techs lost fingers. That is a good point, goose - It may be they are worried about some type of inductive kickback from throwing a screwdriver across the terminals at the motor and the resulting surge when you break the contact. Though, 'technically' that's not what you're doing with the two stats. But it's always better to be safe than sorry! Well, I read instructions of how to build a tool to do it and they suggested not to simply short the two pins, but to put a small resistor in series with the pins for a particular reason.

I'm no EE or physics major but maybe this is what the purpose was for Could something similar be designed for 2 t-stats on one zone? Mount the zone control box near the furnace, either on the ductwork or a close wall. Run an gauge 4-conductor wire from the control board on the furnace to the terminals marked furnace on the zone control box.

Strip the ends of the wire and attach them to the furnace control board. They should be attached as follows: Attach the other end of the wire in the zone control box to the same color coded terminals in the space marked Furnace. Install a thermostat in each of the areas being fed by the zoned ducts, following the instructions for installation that are included with the thermostat.

Run a wire from each thermostat to the zone control box. Attach the wire from the thermostat being fed by Damper 1 to the terminals marked Thermostat 1. Repeat for the second thermostat, but attach to the terminals marked Thermostat 2. Again the color coding of the wires will be as follows: Test the thermostats in each area to make sure the system responds to a demand for heating or cooling.

Questions Tags Users Badges Unanswered. Join them; it only takes a minute: Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top. How to wire multiple thermostats. You won't be able to heat your basement and upstairs separately simply by adding a thermostat. If the basement thermostat calls for heat, the heat will be delivered to the whole house.

So your basement will be comfortable, but the upstairs will be extra toasty. There are some that allow multiple thermostats to be linked together eg, NEST, which also has motion sensors to automatically recognize when you're there , although this still doesn't get a multi-zone system, just a way to heat or cool the entire house from multiple locations. I have a similar dilemma with a 3-storey house. Rooms coming off each floor can be controlled by mechanical thermostatic valves on each radiator.

We cannot beat natural science and heat will rise so any space that is left open to heat coming from downstairs will be heated beyond the thermostat setting.

Therefore keep doors shut. Two risks that I see are: If you do this be aware each thermostat will be oblivious to actions of the other. Any cycling restrictions enforced by thermostat to prevent damage to heating or cooling systems will be ineffective.

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can i hook up two thermostats to one furnace

As for operation, I think I will leave the downstairs thermostat off except on those nights when we have a fire which creates a big difference in the temps on the two floors.

can i hook up two thermostats to one furnace

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can i hook up two thermostats to one furnace

I'd add the second thermostat in the basement and normally keep it at a low temperature unless I'm in the room. Generally we keep the vents upstairs in the room with the can i hook up two thermostats to one furnace stove closed, because we free dating site augusta ga enough heat in that room and it is the best insulated area of the house. If so will the Honeywell IAQ thermostat work - it came highly recommended Turn off the downstairs thermostat for upp summer and the upstairs one for the winter. Hoik a wire from each thermostat to the zone control box.