LENNOX Thermostat 24V HEAT COOL W SUBBASE Mercury

Description

nice used Lennox t-stat
1 heat 1 cool
low voltage 30vac
connections Rc-Rh <  Y1 < W1 < G
tie Rc&Rh together for systems with one thermostat, Y1 is the cooling wire, W1 is the furnace wire, G is for the fan.
Tested working , remove from commercial building for controller upgrade.