Williamson Heat Pump

[fatslapper123]

Hello,

After briefly perusing the threads on this website, I have not been able to find any information on this unit ANYWHERE! including the manufacturer.. they merged or got bought out about 20 years ago. Im trying to wire the thermostat up to this heat pump, and trying to make sense of the labeling for the tstat wiring.. any idea of what the x,k, w1, w2 get wired to in regards to the tstat? Unfortunately i do not have a ton of experience with heat pumps, and seeing as this unit was made in 1988, im going to assume there were no standards regarding tstat wiring?

Any help would be greatly appreciated.

Thanks,
Kevin

Williamson heat pump nameplate picture.jpgWilliamson HP wires.jpg

[Brian_UK]

If the thermostat is the one in the picture then it looks like a simple NO/NC changeover model.

Replace like for like.