I currently have a Robertshaw 300-208 thermostat running my Luxaire
heat-pump and (some other brand) electric furnace as auxiliary heat.
I just bought the Honeywell RTH8500 thermostat to replace it.
There are two labels on the Robertshaw thermostat which do not
correspond to any label referred by the installation manual for the
Honeywell thermostat : "24V" and "24V(c)".
I've included pictures of the current wiring. Because some of the
labels are hidden in the pictures, here's a top-to-bottom list:
Here are the pictures:
Can anyone tell me which of my wires I should connect to which
terminal on the Honeywell ?
Only need one pix. I'm not even in the biz but I could do it. If I
were you I would pull new wire because the Robertshaw wire isn't
accurate for the Honeywell. Add an extra 20' on each end for expansion
and contraction and the way the price of copper is going up I would buy
On Fri, 20 Jul 2007 08:00:07 -0700, firstname.lastname@example.org wrote:
"Im a tight ass. I bought a pretty new thermostat all on my own. I
thought it would be soooooo easy. Who the hell needs one of those
fancy expensive hvac techs?"
Hook half the wires to the R terminal
Hook the other half to the C terminal.
Turn it on and watch EVERYTHING light up (for a split second).
Then comes the fireworks and smoke because of the swell job you just
"Spank me, beat me, bite me". I dont even want your money in my Pay-
Pal. Id rather just watch the fun.
..........and I havent even finished my first beer this evening.
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