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Author Topic: bad thermostat, or bad wiring????  (Read 2557 times)

doo_hicky

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bad thermostat, or bad wiring????
« on: October 19, 2015, 04:57:49 AM »
Finally after 2 years I have in slab heat in my garage.....sorta...

I have a Tekmar 519 with slab sensor going to a Taco SR501,  Problem is,  that the wiring pics from tekmar doesn't jive with the switching relay...help?? 

Thanks

Mike
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slimjim

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Re: bad thermostat, or bad wiring????
« Reply #1 on: October 19, 2015, 05:40:56 AM »
Can you post their schematic?
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doo_hicky

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Re: bad thermostat, or bad wiring????
« Reply #2 on: October 19, 2015, 06:07:23 AM »
ill try, but at work
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doo_hicky

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Re: bad thermostat, or bad wiring????
« Reply #3 on: October 19, 2015, 06:34:00 AM »
see the schematics
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doo_hicky

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Re: bad thermostat, or bad wiring????
« Reply #4 on: October 20, 2015, 04:26:55 AM »
I figured it out....what was confusing me was the 24v and the com wire into the switching relay as shown on the tek pic.    What I needed to do was C to Com(which was labeled as 24vav/com on the taco switching relay) R to Rh, W to W1,  and put a jumper from R to Rh in the t-stat.

Initially I wanted the slab to be set at 55, but 65 is much nicer  :) but we shall see about the consumption.
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