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Remote Thermostat Mode (Optional Accessory) ECONOMY UP PROGRAM A remote thermostat can be installed for the Rinnai furnace with the Remote Thermostat Installation Kit (Part # 204000045 for U.S. installations, Part # 204000048 for Canadian Installations). Once installed, the furnace must be placed in Remote Thermostat mode by following the steps below: 1. Ensure the furnace is plugged in but is turned OFF. 2. Ensure the Set back feature is turned OFF. 3. Press and hold the Economy + Up + Program buttons for 2.5 seconds and then release (00 appears in the display). 4. Press the UP button (01 appears in the display). 5. Press the ON/OFF button; the display will go blank. The furnace is now in Remote Thermostat mode.