The Ruud Ultra Series™ 90 Plus High Efficiency line of upflow gas furnaces are designed for utility rooms, closets, or alcoves. Because of the lowprofile 34 inch height, the RGFG- model can be used vertically to satisfy most applications that traditionally call for a horizontal furnace.  The design is certified by CSA.







 

• The Comfort Control 2 System™ provides 28 on-board diagnostic codes and fault history codes by detecting system and electrical problems. “Call for Service” alert notification is sent to the thermostat to alert the homeownerof required service
• Serial Communication Enhanced – When installed with a Serial Com municating Condensing Unit and user interface control (RHC-TST550CMMS) 500 Series thermostat this unit offers 4 or 2 wire installation, auto-configuration, and diagnostic messaging with full communicating capability
• Heat exchanger is constructed of all stainless steel for maximum corrosion resistance and thermal fatigue reliability
• Modulating Function: when used with a modulating or communicating thermostat, modulation rate between 40% and 100% of total capacity
• Two-stage Function: when used with a two-stage thermostat, furnace operates at 40% on first stage, and stages up to 65%, then 100% for second stage
• Multistage Function: when used with a single-stage thermostat, furnace functions as a three stage furnace operating at 40%, 65% and 100% of total capacity
• Reduced firing rates, electrically efficient ECM 3.0 motor, and solid doors provide the ultimate in quiet operation
• Low speed constant fan
• Constant temperature rise for superior comfort
• Seven segment LED for system diagnostics
• Diagnostic history for troubleshooting
• Two-speed induced draft motor
• Direct spark ignition with remote sense
• Optional indoor or outdoor combustion air

                                                                                                                           Gas Furnaces