The RTH230B programmable thermostat can be used to control a gas, fuel oil or electric furnace – 2 or 3 wires, a central air conditioner – 2 or 3 wires, a hot water system with or without pump – 2 wires, a millivolt system – 2 wires, a central heating and cooling system – 4 or 5 wires
This Manual is used for installation of Honeywell RTH230B programmable thermostat. This Howneywell RTH230B thermostat is easy to install, easy to program and easy to use! It is lacking one minor feature that happens to be important.
Note: This thermostat is not compatible with heat pumps or multi-stage systems.