To Next PageTo Next PageWhat to do if Nordyne Furnace operates when the Blower Limit Switch is reset?
If your Nordyne furnace only operates after resetting the blower limit switch, it's recommended to contact a qualified service technician to diagnose and fix the underlying issue.
What to do if Nordyne CMF95 Furnace operates when the flame rollout switch is reset?
If your Nordyne furnace runs only after you reset the flame rollout switch, you should contact a qualified service technician to find and repair the problem.
What to do if my Nordyne Furnace fails to operate?
If your Nordyne Furnace isn't working, begin by verifying that the thermostat is correctly set. Then, check that the ON/OFF switch inside the front door is turned on. Also, make sure the circuit breaker hasn't tripped, the manual gas shutoff is open, and the filter isn't dirty or clogged.
Highlights critical safety warnings for operation and maintenance, including general hazards and specific cautions.
Provides step-by-step instructions on what to do if a gas leak is detected, emphasizing immediate evacuation and contacting authorities.
Details risks associated with gas piping, modifications, and the importance of licensed installers to prevent fire or explosion.
Stresses the need for unobstructed airflow for combustion and ventilation to prevent dangerous carbon monoxide production.
Offers basic checks for furnace non-operation, such as thermostat settings, circuit breakers, and filter condition.
Highlights critical safety warnings for operation and maintenance, including general hazards and specific cautions.
Provides step-by-step instructions on what to do if a gas leak is detected, emphasizing immediate evacuation and contacting authorities.
Details risks associated with gas piping, modifications, and the importance of licensed installers to prevent fire or explosion.
Stresses the need for unobstructed airflow for combustion and ventilation to prevent dangerous carbon monoxide production.
Offers basic checks for furnace non-operation, such as thermostat settings, circuit breakers, and filter condition.
This document is a user manual for the CMF95 Series Downflow, Single Stage Condensing Gas Furnace, providing essential information for its safe operation and maintenance. The furnace is designed to deliver efficient heating and comfort, with a 95.1 AFUE (Annual Fuel Utilization Efficiency) rating, indicating that 95.1% of the fuel consumed is converted into usable heat. It is classified as a Category IV furnace, typically vented through plastic PVC pipe.
The CMF95 Series furnace is a heating appliance that uses natural gas (or LP/propane gas with a conversion kit) to generate heat. It is equipped with an automatic ignition device, meaning there is no pilot light to manually ignite. The furnace draws combustion air, burns the fuel, and then vents the combustion products outside. A blower assembly circulates heated air throughout the building via a duct system, while a control board manages the overall operation, including ignition, safety checks, and temperature regulation. Safety features like a limit switch, flame sensor, and roll-out switch are integrated to monitor the furnace's operation and prevent hazardous conditions such as overheating or flame rollout. The furnace is designed for installation in various settings, including manufactured homes, recreational vehicles, park models, manufactured buildings, and modular homes/buildings.
The manual emphasizes safe and proper usage. Users are instructed to familiarize themselves with the furnace's controls, particularly the gas valve's ON/OFF knob and the electrical ON/OFF switch, which are crucial for starting and shutting down the unit. The thermostat, typically a conventional single-stage type, controls the furnace's operation based on desired temperature settings. It should be mounted on an inside wall, away from heat sources or drafts that could affect its accuracy. The manual provides detailed step-by-step instructions for both starting and shutting down the furnace, including procedures for handling a gas smell, which prioritizes safety by advising immediate evacuation and contacting the gas supplier or fire department. It also warns against storing combustible materials, gasoline, or other flammable vapors and liquids near the furnace to prevent fire or explosion hazards. The furnace requires unrestricted airflow for combustion and ventilation, so users must ensure that air openings on or around the furnace are never blocked.
Regular maintenance is critical for the furnace's optimum performance, efficiency, and longevity. The manual recommends annual inspections by a licensed HVAC technician to check the overall condition, venting system, burners, and condensate drainage. Key maintenance tasks for homeowners include monthly inspection and cleaning or replacement of the air filter. The filter is essential for preventing dust and lint buildup on internal components, which can lead to reduced efficiency, equipment damage, and potential fire hazards. The furnace should never be operated without a filter in place. The condensate drainage system, which handles the slightly acidic liquid produced during operation, also requires periodic inspection to ensure proper drainage and prevent blockages. Homeowners are advised to visually inspect the furnace for signs of deterioration, such as sagging, cracks, or loose connections, and to ensure that supply air registers and return grilles are not obstructed by furniture or drapery. The manual also lists common household chemicals that can cause heat exchanger corrosion if their vapors are drawn into the furnace's burners, advising against storing them near the unit. For any issues beyond routine filter maintenance, users are strongly cautioned against attempting repairs themselves and should contact a licensed HVAC technician. The manual includes a troubleshooting section for common operational failures, guiding users to check basic settings like the thermostat, ON/OFF switch, circuit breaker, gas supply, and filter condition before calling for professional service.
General| Fuel Type | Natural Gas or Propane |
|---|---|
| Efficiency | 95% AFUE |
| Ignition Type | Hot Surface Ignition |
| Configuration | Upflow |
| Blower Motor | Variable Speed |
| Dimensions (H x W x D) | Varies by model |
| Weight | Varies by model |
