14

OPERATING HEATER (Thermostat Control Blue Flame and Infrared Models)

To Turn Off Gas To Appliance

Thermostat Control Operation

Manual Lighting Procedure

INSPECTING BURNER

Pilot Flame Pattern

Burner Flame Pattern Blue Flame Models

OPERATING HEATER

Continued

TO TURN OFF GAS

TO APPLIANCE

Shutting Off Heater

1. Turn control knob clockwise Clockwise to the OFF position.

2.Turn off all electric power to the appliance if service is to be performed.

Shutting Off Burner Only (pilot stays lit)

Turn control knob clockwise Clockwise to the PILOT position.

THERMOSTAT CONTROL

OPERATION

The thermostatic control used on these models differs from standard thermostats. Standard thermostats simply turn on and off the burner. The thermostat used on this heater senses the room temperature. The thermostat adjusts the amount of gas flow to the burner. This increases or decreases the burner flame height. At times the room may exceed the set temperature. If so, the burner will shut off. The burner will cycle back on when room temperature drops below the set temperature. The control knob can be set to any heat level between HI and LO.

Note: The thermostat sensing bulb measures the temperature of air near the heater cabinet. This may not always agree with room temperature (depending on housing construction, installation location, room size, open air temperatures, etc.). Frequent use of your heater will let you determine your own comfort levels.

MANUAL LIGHTING

PROCEDURE

1.Remove front panel (see Figure 10, page 7).

2.Follow steps 1 through 5 under Lighting Instructions, page 13.

3.With control knob pressed in, strike match. Hold match to pilot until pilot lights.

4.Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob. Follow step 8 under Lighting Instructions, page 13.

5.Replace front panel.

If pilot flame pattern is incorrect, as shown in Figure 25

•turn heater off (see To Turn Off Gas to Appliance, pages 11, 12 or 14 depending on your model)

•see Troubleshooting, pages 16 through 18

Note: The pilot flame on natural gas units will have a slight curve, but flame should be blue and have no yellow or orange color.

 

Pilot

Pilot Burner

Burner

Thermocouple

Thermocouple

 

Figure 24 - Correct Pilot Flame

Figure 25 - Incorrect Pilot Flame

Pattern

Pattern

BURNER FLAME PATTERN

BLUE FLAME MODELS

Figure 26 shows a correct burner flame pattern. Figure 27 shows an incorrect burner flame pattern. The incorrect burner flame pattern shows yellow tipping of the flame. It also shows the flame higher than 1/2 the glass panel height.

WARNING: If yellow tipping occurs, your heater could produce increased levels of carbon monoxide. If burner flame pattern shows yellow tipping, proceed with the following instructions.

NOTICE: Do not mistake orange flames with yellow tipping. Dust or other fine particles enter the heater and burn causing brief patches of orange flame.

1/2 GLASS HEIGHT

(Models VN600A and VP600A will be lower due to lower input rating)

INSPECTING BURNER

Figure 26 - Correct Burner Flame Pattern

Check pilot flame pattern and burner flame pattern often.

PILOT FLAME PATTERN

Figure 24 shows a correct pilot flame pattern. Figure 25 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple. This will cause the thermocouple to cool. When the thermocouple cools, the heater will shut down.

For more

Yellow

Tipping

1/2 GLASS HEIGHT

Figure 27 - Incorrect Burner Flame Pattern

visit www..com

110720-01C

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Desa VN10A Inspecting Burner, Thermostat Control Operation, Burner Flame Pattern Blue Flame Models, Pilot Flame Pattern
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VN10A specifications

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One of the standout features of the Desa VN10A is its efficient powertrain. It is equipped with a powerful yet economical engine that balances performance and fuel efficiency, making it ideal for everyday use. The engine showcases advanced technology, including direct fuel injection and turbocharging, providing exceptional power output while reducing emissions. This combination not only enhances the driving experience but also aligns with global efforts toward sustainability.

The exterior design of the Desa VN10A is another notable aspect. With its aerodynamically sculpted body and sleek lines, the vehicle delivers an aesthetic appeal that turns heads on the road. The innovative LED headlight technology offers improved visibility and adds a modern touch to the overall look, while the available range of colors allows for personalization to suit individual preferences.

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Safety is a paramount consideration in the design of the Desa VN10A. The vehicle is equipped with a comprehensive suite of safety features, including adaptive cruise control, lane-keeping assist, and automatic emergency braking. These technologies work together to provide peace of mind for both the driver and passengers, promoting a secure driving environment.

In summary, the Desa VN10A stands out for its blend of efficiency, style, and advanced technology. Its powerful engine, modern exterior, comfortable interior, and robust safety features make it a remarkable choice for anyone seeking a reliable and stylish vehicle. Whether navigating city streets or exploring the open road, the Desa VN10A is engineered to rise to the occasion, providing an exceptional driving experience that is hard to match.
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