Contents

OWNERS MANUAL
- TABLE OF CONTENTS
- IMPORTANT FACTS (DOS AND DONTS)
- FURNACE COMPONENTS
  - Fig. 1 A170127AFurnace Components
- SAFETY CONSIDERATIONS
  - Fig. 2 Exterior Vent Pipes
  - Fig. 3 Interior Combustion - Air Pipe
  - Fig. 4 NO combustible materials near furnace
- BEFORE STARTING YOUR FURNACE
  - 1. All flue gas carrying areas external to the furnace (i.e. chimney, vent connector) are clear and free of obstructions.
  - 2. The vent connector is in place, slopes upward and is physically sound without holes or gaps.
  - 3. The return-air duct connection(s) is physically sound, is sealed to the furnace casing, and terminates outside the space containing the furnace.
  - 4. The physical support of the furnace is sound without sagging cracks, gaps, etc. around the base.
  - 5. There are no obvious signs of deterioration of the furnace.
  - 6. The burner flames are in good adjustment (see Fig. 5) (by comparison with pictorial sketches or drawings of the main burner flame).
  - Fig. 5 Burner Flame Adjustment
- STARTING YOUR FURNACE
  - Fig. 6 Do Not Light Burner with Match
- STEPS FOR STARTING YOUR FURNACE
  - 1. Set your room thermostat to the lowest temperature setting and set the MODE to OFF (see Fig. 7).
  - Fig. 7 Lowest Temperature Setting
    - 2. Close the external manual gas valve (see Fig. 8).
  - Fig. 8 Close Valve
    - 3. Turn OFF electrical supply to the furnace (see Fig. 9).
  - Fig. 9 Turn Off Electrical Supply
    - 4. Remove the main furnace door (see Fig. 10).
  - Fig. 10 Remove Main Furnace Door (Upflow Configuration)
    - 5. Turn the control switch on the gas control to the OFF position and wait five minutes (see Fig. 11). Then smell for gas, including near the floor. If you smell gas, STOP! Follow B on furnace label. If you dont smell gas, go to next step.
  - Fig. 11 Control Switch to OFF
    - 6. After waiting five minutes, turn control switch on the gas control to the ON position. Turn the control switch to ON (see Fig. 12).
  - Fig. 12 Control Switch to ON
    - 7. Replace main furnace door (see Fig. 13).
  - Fig. 13 Furnace Door Replaced (Upflow Configuration)
    - 8. Turn ON the electrical supply to the furnace and wait one minute (see Fig. 14).
  - Fig. 14 Turn on Electrical Supply
    - 9. Open the external manual gas valve (see Fig. 15).
  - Fig. 15 Open Valve
    - 10. Set the room thermostat MODE to HEAT and adjust the set point to a temperature slightly above the room temperature. This will automatically signal the furnace to start.
    - 11. When the furnace receives the start signal, the combustion air draft inducer is started. When the pressure switch senses that there is sufficient combustion air, the hot surface igniter is energized. After the hot surface igniter is heated for ab...
    - 12. Set your thermostat to the temperature that satisfies your comfort requirements.
- SHUTTING DOWN YOUR FURNACE
  - 1. Set your room thermostat to the lowest temperature setting and set the MODE to OFF (see Fig. 16).
  - Fig. 16 Lowest Temperature Setting
    - 2. Close the external manual gas valve (see Fig. 17).
  - Fig. 17 Close the External Manual Valve
    - 3. Turn off electrical supply to the furnace (see Fig. 18).
  - Fig. 18 Turn Off Electrical Supply
    - 4. Remove main furnace door (see Fig. 10).
    - 5. Turn control switch on the gas control to OFF position (see Fig. 11).
    - 6. Replace main furnace door (see Fig. 13).
    - 7. If the furnace is being shut down because of a malfunction, call your dealer as soon as possible.
- MINIMUM & MAXIMUM TEMPERATURE SETTING FOR YOUR FURNACE
- PERFORMANCE ROUTINE MAINTNENANCE
- FILTERING OUT TROUBLE
  - 1. Turn off electrical supply to the furnace (see Fig. 19).
  - 2. Remove air filter from the filter cabinet.
    - a. Remove filter cabinet door (see Fig. 20 and Fig. 21).
    - b. Slide air filter out of furnace. Keep dirty side up (if dirty) to avoid spilling dirt (see Fig. 22 and Fig. 23).
  - 3. Inspect the filter. If torn replace it.
  - 4. If washable filter, wash filter (if dirty) in a sink, bathtub, or outside with a garden hose. Always use cold tap water. A mild liquid detergent may be used if necessary. Spray water through filter in the opposite direction of airflow. Allow filte...
  - 5. Reinstall clean air filter.
  - 6. Turn on electrical supply to the furnace.
  - Fig. 19 Turn Off Electrical Supply
  - Table 1 Air Filter Located in Filter Cabinet
- COMBUSTION AIR AND VENT SYSTEM
  - 1. Turn off electrical supply and gas supply to the furnace and remove the main furnace door (see Fig. 7, Fig. 8, Fig. 9, Fig. 10 and Fig. 11).
  - 2. Inspect the gas burners, igniter area, and remainder of furnace for dirt, rust, soot or scale.
  - Fig. 20 Gas Burner Assembly (Upflow)
  - Fig. 21 Gas Burner Assembly (Downflow)
    - 3. Inspect the combustion-air and vent PVC pipes for sags, holes, cracks, water leaks, blockage or disconnections. Horizontal portions of vent pipe must slope downward toward the furnace.
    - 4. If your furnace is free of the above conditions,turn on electrical and gas supplies to the furnace.
    - 5. Start your furnace and observe its operation. Watch the burner flames to see if they are clear blue, almost transparent (see Fig. 22). If you observe a suspected malfunction, or the burner flames are not clear blue, call your dealer.
    - 6. Replace main furnace door.
  - Fig. 22 Burner Flame Adjustment
- WINTERIZATION
  - 1. Obtain propylene glycol (RV/swimming pool antifreeze or equivalent).
  - 2. Turn off gas and electrical supplies to your furnace.
  - 3. Remove furnace control compartment door.
  - 4. Remove one of the unused rubber plugs in the port on the collector box opposite the condensate trap. See Fig 30
  - 5. Connect a field supplied 3/8-in. (9.5-mm) ID tube to the open port on the collector box
  - 6. Insert a field supplied funnel into the tube.
  - 7. Pour 1 quart of anti-freeze solution into the funnel/tube. Antifreeze should run through the inducer housing, overfill condensate trap and flow to an open drain.
  - 8. If a condensate pump is used, check with pump manufacturer to verify pump is safe for use with antifreeze used. Allow pump to start and pump anti-freeze to open drain.
  - 9. Remove funnel and tube from collector box.
  - 10. Replace plug in collector box.
  - 11. Remove the other plug and repeat steps 4-10.
  - 12. Replace main door.
  - 13. When furnace is re-started, flush condensate pump with clear water to check for proper operation before re-starting furnace.
  - 14. Propylene glycol need not be removed before re-starting furnace.
  - Fig. 23 Winterizing Furnace
- A CHECK-UP CHECKLIST
  - Fig. 24 Information Booklet Location
- BEFORE YOU REQUEST A SERVICE CALL
  - For insufficient airflow:
  - If furnace fails to operate:
  - A200102
- MAINTENANCE CHECKLIST

Tempstar F96VTN Owner's Manual

Tempstar F96VTN Gas Furnace manual cover

Pages 12

Year 0

Language(s)

of 12

Tempstar F96VTN Gas Furnace Specification

The Tempstar F96VTN Gas Furnace is designed to deliver high efficiency and reliable home heating. It features a variable-speed blower motor that enhances comfort by providing consistent airflow and reducing temperature fluctuations. The furnace operates with an AFUE (Annual Fuel Utilization Efficiency) rating of up to 96%, which ensures that a large percentage of the fuel used is converted into heat, minimizing energy waste and lowering utility bills.

The F96VTN is equipped with a two-stage gas valve that adjusts heat output to meet varying demand, offering improved energy efficiency and quieter operation. Its fully insulated cabinet reduces heat loss and noise, enhancing the overall comfort of the living space. The furnace includes a durable primary heat exchanger made of aluminized steel and a secondary heat exchanger made of stainless steel, both engineered for longevity and effective heat transfer.

Safety features are integral to the design, including pressure switches, flame roll-out sensors, and an over-temperature sensor that ensure secure operation. The furnace is compatible with a variety of thermostats, including smart home systems, allowing for flexible control and integration into modern home environments.

Installation and maintenance are simplified through a multi-position design that accommodates upflow, downflow, and horizontal configurations, making it versatile for different installation scenarios. The Tempstar F96VTN is designed for quiet operation, utilizing a sealed combustion system and sound-reducing features. It is backed by a limited warranty, offering peace of mind through coverage on key components. This furnace is an ideal choice for homeowners seeking a balance of energy efficiency, comfort, and dependable performance.

Tempstar F96VTN Gas Furnace F.A.Q.

How do I reset the Tempstar F96VTN gas furnace?

To reset the Tempstar F96VTN gas furnace, turn off the power to the furnace, wait for about 30 seconds, and then turn the power back on. This can usually be done by switching off the circuit breaker or removing the furnace's access panel and using the reset button if available.

What should I do if the furnace is not igniting?

Check the thermostat settings to ensure they are correct. Inspect the pilot light and ensure it is lit. If the furnace has an electronic ignition, ensure it is functioning properly. Also, check for any error codes on the furnace display and refer to the user manual for troubleshooting steps.

How often should I change the air filter on my Tempstar F96VTN gas furnace?

It is recommended to check the air filter every month and replace it every 1 to 3 months depending on usage and air quality. A clean filter improves airflow and efficiency.

What maintenance tasks should be performed regularly on the Tempstar F96VTN furnace?

Regular maintenance tasks include changing the air filter, inspecting and cleaning the blower assembly, checking the flue pipe for obstructions, and ensuring that the thermostat is functioning correctly. An annual professional inspection is also recommended.

Why is my Tempstar F96VTN furnace making unusual noises?

Unusual noises may be caused by loose components, a failing blower motor, or debris in the blower wheel. Inspect the furnace for visible issues, tighten any loose components, and clean the blower wheel. If noises persist, contact a professional technician.

How do I adjust the thermostat for optimal efficiency on my Tempstar F96VTN furnace?

Set the thermostat to a comfortable yet energy-efficient temperature. Consider programming lower temperatures at night or when the home is unoccupied. Regularly check the thermostat for proper calibration and replace batteries as needed.

What should I do if the furnace blower is running continuously?

First, check if the thermostat fan setting is set to "ON" instead of "AUTO." If the setting is correct, the issue could be with the limit switch or a wiring problem. Consult the user manual or contact a professional for further diagnostics.

How can I improve the energy efficiency of my Tempstar F96VTN gas furnace?

Ensure proper insulation around the home, seal any air leaks, regularly replace air filters, and conduct annual furnace maintenance. Upgrading to a programmable thermostat can also enhance energy efficiency.

What does it mean if my furnace is cycling on and off frequently?

Frequent cycling could be due to a dirty air filter, an improperly set thermostat, or issues with the limit switch or flame sensor. Check these components and clean or replace as necessary. If the problem persists, contact a professional technician.

How do I light the pilot light on my Tempstar F96VTN furnace?

The Tempstar F96VTN typically uses electronic ignition, so there is no pilot light to manually light. If the ignition system is malfunctioning, refer to the user manual for troubleshooting or contact a professional technician.