OPERATING HEATER

Continued

B.BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.

WHAT TO DO IF YOU SMELL GAS

•Do not try to light any appliance.

•Do not touch any electric switch; do not use any phone in your building.

•Immediately call your gas supplier from a neighborʼs phone. Follow the gas supplierʼs instructions.

•If you cannot reach your gas supplier, call the fire department.

C.Use only your hand to push in or turn the gas control knob. Never use tools. If the knob will not push in or turn by hand, donʼt try to repair it, call a qualified service technician. Force or attempted repair may result in a fire or explosion.

D.Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water.

LIGHTING

INSTRUCTIONS

1.STOP! Read the safety information starting on page 12.

2.Make sure equipment shutoff valve is fully open.

3.Turn off any electric power to the appliance if service is to be performed.

4.Turn control knob clockwise to the OFF position.

5.Wait five minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow “B” in the safety information starting on page 12. If you donʼt smell gas, go to the next step.

6.Turn control knob counterclockwise to the PILOT position. Press in control knob for five (5) seconds.

7.With control knob pressed in, push down and release ignitor button. This will light pilot. The pilot is attached to the front of

burner. Note: You may be running this heater for the first time after hooking up to gas supply. If so, you may need to press in control knob for 30 seconds or more. This will allow air to bleed from the gas system. If needed, keep pressing ignitor button until pilot lights. If ignitor does not light pilot, refer to Troubleshooting, page 16 or contact a qualified service person or gas supplier for repairs. Until repairs are made, light pilot with match. To light pilot with match, see Manual Lighting Procedure, page 14.

8.Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob.

•If control knob does not pop up when released, contact a qualified service person or gas supplier for repairs.

Note: If pilot goes out, repeat steps 4 thru 7. Thermostat models have a safety interlock system. Wait one (1) minute before lighting pilot again.

9.Turn control knob counterclockwise to desired heating level. The main burner should light.

CAUTION: Do not try to ad- just heating levels by using the equipment shutoff valve.

Ignitor Button

Control Knob

(Actual Ignitor may vary)

 

 

F

 

F

 

O

Figure 16 - Control Knob In The OFF

Position

 

Thermocouple

Ignitor

 

Electrode

 

Pilot

 

Burner

Figure 17 - Pilot

116307-01A

www.desatech.com

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Desa SF20NT installation manual Lighting Instructions, What to do if YOU Smell GAS
Page 12 Page 14

SF20NT specifications

Desa SF20NT is a versatile and innovative gas-fired space heater designed for efficient heating solutions in various environments, whether in residential, commercial, or industrial settings. This model is known for its high performance, energy efficiency, and advanced technology, making it a popular choice among users seeking reliability and effectiveness in their heating needs.

One of the primary features of the Desa SF20NT is its impressive heating capacity. With a heating output of around 20,000 BTUs, it can effectively warm spaces up to 1,000 square feet, making it suitable for larger areas. This capability is enhanced by the heater's superior metal construction, ensuring durability and long-lasting performance.

In terms of technology, the Desa SF20NT incorporates a direct vent system that utilizes outside air for combustion. This feature not only increases efficiency but also enhances safety, as it minimizes the risk of hazardous fumes entering the living space. The direct vent system allows for installation flexibility; the unit can be vented horizontally through a wall or vertically through a roof, catering to different building designs.

Another standout characteristic of the Desa SF20NT is its thermostat control, which allows users to maintain a consistent temperature easily. This feature contributes to energy savings by enabling the heater to operate only when necessary, thus reducing unnecessary heating costs. Additionally, the unit includes a programmable timer, allowing users to set specific heating schedules, further optimizing energy use.

Safety is also a critical aspect of the Desa SF20NT design. It comes with built-in safety features such as a flame sensor and a safety shut-off system, ensuring that the heater operates under safe conditions at all times. The unit is designed to meet stringent safety standards, giving users peace of mind.

In summary, the Desa SF20NT is a powerful, efficient, and safe space heater that is equipped with modern features and technologies. With its high heating capacity, direct vent system, thermostat control, and safety mechanisms, it stands out as an excellent choice for anyone looking for reliable heating solutions. Whether for home or business use, the Desa SF20NT is built to provide comfort and efficiency year-round.
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