Ok, I am not completely inept but working on a small project and hit a snag due to how something I am hacking was originally configured. I bought a device that can do heating and cooling. It originally had a three-way toggle switch (Hot-off-Cold) that was wired in such a way to switch the polarity of a peltier cooling unit to cause it to heat or cool respectively, and be off. I want to wire in a thermostat with two spst relays to now control what the toggle did before and found out that I probably need one or two other relays in order to make it work.
Here is the toggle switch wiring, it has six posts:
P0 P1 P2
P3 P4 P5
COLD
P0 = +12VDC
P1 = +12VDC
P2 = no contact
P3 = -12VDC
P4 = -12VDC
p5 = no contact
HOT
P0 = no contact
P1 = -12VDC
P2 = -12VDC
P3 = no contact
P4 = +12VDC
P5 = +12VDC
Thermostat has 12VDC inputs and two spst relays for HOT and COLD actuation, and an off state where both relays are open and no circuit is complete for either.
I have ordered a DPDT relay (8 posts; 2 NO, 2 NC, 2 COM, 2 COIL) to replace the toggle switch, but I am not sure if that alone will do the trick nor how to wire it properly with the thermostat. Can anyone help me figure this out? I can provide more info if needed. It seemed fairly simple when I started, but got a little more complicated for my comfort level.
Here is the toggle switch wiring, it has six posts:
P0 P1 P2
P3 P4 P5
COLD
P0 = +12VDC
P1 = +12VDC
P2 = no contact
P3 = -12VDC
P4 = -12VDC
p5 = no contact
HOT
P0 = no contact
P1 = -12VDC
P2 = -12VDC
P3 = no contact
P4 = +12VDC
P5 = +12VDC
Thermostat has 12VDC inputs and two spst relays for HOT and COLD actuation, and an off state where both relays are open and no circuit is complete for either.
I have ordered a DPDT relay (8 posts; 2 NO, 2 NC, 2 COM, 2 COIL) to replace the toggle switch, but I am not sure if that alone will do the trick nor how to wire it properly with the thermostat. Can anyone help me figure this out? I can provide more info if needed. It seemed fairly simple when I started, but got a little more complicated for my comfort level.