INSPECTING BURNERS

Check pilot flame pattern and burner flame pat- terns often.

PILOT FLAME PATTERN

You can view the pilot light through the pilot view- ing hole on the pilot bracket. This is located under the front grate bar on the right side of the log set.

Figure 15 shows a correct pilot flame pattern. Figure 16 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the ther- mocouple. This will cause the thermocouple to cool. When the thermocouple cools, the appliance will shut down.

If pilot flame pattern is incorrect, as shown in Figure 16

•turn appliance off (see To Turn Off Gas to Appliance, page 11)

•see Troubleshooting, page 13

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

If burner flame pattern is incorrect, as shown in Figure 18.

•turn appliance off (see To Turn Off Gas to Ap- pliance, page 10)

•see Troubleshooting, page 13

Dark Orange

Flames

Figure 18 - Incorrect Burner Flame Pattern

CLEANING AND

MAINTENANCE

WARNING: Turn off the ap- pliance and allow to cool before cleaning.

Thermocouple

Figure 15 - Correct Pilot Flame Pattern (Your pilot may vary from pilots shown)

Thermocouple

Figure 16 - Incorrect Pilot Flame Pattern (Your pilot may vary from pilots shown)

BURNER FLAME PATTERN Figure 17 shows correct burner flame pattern.

NOTICE: Do not mistake orange flames with yellow tipping. Dirt or other fine particles are burned by appliance, causing brief patches of orange flame.

Yellow Flames with Orange Streaks

Figure 17 - Correct Burner Flame Pattern

CAUTION: You must keep control areas, burners and cir- culating air passageways of fire- place clean. Inspect these areas offireplacebeforeeachuse.Have fireplace and chimney (if appli- cable)inspectedyearlybyaquali- fiedserviceperson.Fireplacemay need more frequent cleaning due to excessive lint from carpeting, bedding material, etc.

Only limited cleaning will be required under nor- mal use of this appliance. Dust the front grate and top of receiver/valve. Do not use cleaning fluids to clean logs or any other part of the appliance.

If, after a period of use, the flames start to exhibit unusual shapes and behavior or the burner fails to ignite smoothly, then the burner holes may require some cleaning. If this happens, we recommend that you contact your nearest authorized service technician to get the appliance serviced.

•Keep area around log set clean and clear of debris.

•Periodically inspect the air mixer and burner tube for foreign matter blocking the air inlet and flame holes.

•Once every year a qualified agency or certified chimney sweep should examine and clean the venting system of the fireplace.

12

www.desatech.com

114924-01B

Page 11 Page 13
Page 12
Image 12
Desa MVO18VPA, MVO24VNA, MVO24VPA, MVO18VNA installation manual Inspecting Burners, Cleaning Maintenance, Pilot Flame Pattern
Page 11 Page 13

MVO24VPA, MVO18VNA, MVO18VPA, MVO24VNA specifications

Desa MVO18VPA, MVO24VPA, MVO18VNA, and MVO24VNA represent a line of versatile and efficient heating solutions designed for various residential and commercial applications. These models are tailored to meet diverse user requirements while providing exceptional value through advanced technologies and features.

At the core of the Desa line is the commitment to energy efficiency. The MVO series incorporates high-efficiency motors and advanced heat exchange systems that ensure optimal performance while minimizing energy consumption. This not only leads to cost savings on utility bills but also reflects a commitment to sustainability, making these models an excellent choice for eco-conscious consumers.

In terms of heating capacity, the MVO18 models offer a robust output suitable for medium-sized spaces, while the MVO24 models are designed for larger areas, providing flexibility for different applications. The ability to adjust heating levels allows users to customize their environment according to their specific needs, enhancing comfort.

The MVO series is equipped with innovative technologies that ensure consistent performance. The integration of intelligent temperature controls provides precise management of heating levels, enabling users to maintain their desired comfort without unnecessary energy expenditure. Additionally, these models feature durable construction materials that ensure longevity and reliable operation over time.

User convenience is a significant consideration in the design of the MVO series. Remote control functionality allows users to effortlessly adjust settings from a distance, adding a layer of convenience for those with busy lifestyles. Furthermore, some models are equipped with programmable timers, enabling users to set specific heating schedules that align with their daily routines.

Safety is paramount in the design of the Desa MVO series. These models come with multiple safety features, including overheat protection and automatic shut-off mechanisms, ensuring peace of mind for users.

In summary, the Desa MVO18VPA, MVO24VPA, MVO18VNA, and MVO24VNA heating models stand out for their energy efficiency, advanced heating technologies, and user-friendly features. Their adaptability makes them suitable for a range of environments, catering to the diverse needs of homeowners and businesses alike. With a focus on safety and reliability, the Desa MVO series represents an excellent investment for those seeking effective heating solutions.
Top Page Image Contents