Step1: Disconnect electrical power and shut off gas supply before servicing the equipment.
Step2: Remove control panel and carefully detach the existing thermostat sensing bulb and capillary tube.
Step3: Unscrew and remove the old thermostat from its mounting bracket.
Step4: Install the new thermostat, securing the mount firmly in place.
Step5: Route the bulb and capillary without kinks or sharp bends.
Step6: Reconnect wiring, restore power and gas, then test temperature control through full range.