Post in 'The Boiler Room - Wood Boilers and Furnaces' started by huffdawg, Feb 21, 2013.
Can anyone tell me how to wire this relay. I want to use it to control a circ pump for slab heating
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It's a 3 pole, double throw
A-B is your control voltage.
When you have 110V over AB then 3 switches to 6, 8 to 5 and 4 to 7
What's your control signal? Concrete temp? or room temp? or ... ?
Room temp. 24v -2 wire from wall thermostat.
Don't see how this relay can be used for this purpose. You need a 110V control voltage to activate the relay
But I may need to brush up on my eletrical skills
I think your right . An electrician friend gave it to me . I think he gave me the wrong relay. trying to find more info on it.
This is what a friend uses to turn his pump on when his thermostat calls for heat.
No. For a circ relay, something like this;
Essential features: socket mounted for easy troubleshooting/replacement, low cost, choose the control voltage and poles, throws, to match the existing system, easy for group mounting in a separate enclosure.
If you need a single relay in its own enclosure, RIBs are good. I am usually on one side or the other, ice cube relays or the next step up for me is definite purpose DP contactors.
I hope you have an outdoor reset controller to set the slab water temp. I hope you understand I can only bring myself to give how to wiring advice to a licensed person. I cannot otherwise. You are certainly encouraged to ask of others.
Well I'm not a certified. Electrician. But I wired my 2800 square foot house and 1600 square foot shop.
The the electrical inspector said my wiring was excellent . All my work passed. I did have a certified electrician install the panel and meter. His work failed. Cost me the price of another inspection.
You could install a second relay, a simple "ice cube" type dpdt 24 v coil controling 120. Long way around but could work. Not expensive. Might need transformer
Plus you stayed at a Holiday inn last night!
You need a line voltage (120v in this case) temp control to signal relay or a transformer to step voltage from 24v to 120v if using a low voltage temp controler.
The industry concern is the liability, generally the law will assign the liability to the guy with the license. And, generally, the performance of J Q Public is to punish the other guy without reason or mercy. I am not too concerned about my liability, but J Q P is something to be afraid of. Certainly not you, but it is a learned and standard method of trying to treat everyone fairly. Even with friends and neighbors, I would get blamed when TSHTF as the last guy in there, for stuff I have nothing to do with, but saw and said was bad. Just mentioning my name would get me in deposition, which I am ready for (I said I do not give wiring advice unless you have a license). Nothing personally of course, I intended to give a standard CYA disclaimer.
Lots of guys survive by not knowing or touching anything. So, it must be someone else's fault, is their game plan. Creative and productive people get tarred and feathered for their efforts. This I had to learn.
Why would anyone waste their time typing all those words to tell someone that they can't tell them anything?
You are reading something that is not there. I gave a semihelpful response, he had chosen the wrong relay which would have given him the grief of needing a separate enclosure and convertng back and forth from class 1 to class 2 wiring.
I did not offend or intend to and did not call anyone a compete moron. But of course I am able, if that's what you need me to do.
You are looking for a 24v thermostat to turn on a 120volt circulator pump correct? Try one of these http://www.zorotools.com/g/RIB Relay in a Box/00061844/
Don't worry Fred I'm not that someone? I listen and learn from advice wether its good or bad. And thanks Dan and everyone for the good advice.
The law here in BC changed about 5 yrs. ago. Electricians are allowed to help and advise home owners , in fact they encourage it as there is a better chance it will be done right. Hence safer for home owner..
No offence taken at all Dan. Just bad texting vocabulary on my part
At the moment I am using a double pole line voltage thermostat that's wired to the pump and is plugged into a receptacle . I did this as a temporary measure as it beats plugging the pump cord into the wall every time I need heat. I have a roughed in 18 gauge wire in a more desirable location that I would rather use permanently. I have a thermostatic valve that I set at 110 f. In the loop for the slab. No outdoor reset.
A $10 solution from my favorite surplus store:
If you are like me you probably have a handful of 12v wallworts lying around and you're down to a few bucks (plus shipping)
Else use a 24v doorbell transformer and one of their 24v models.
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