Desa FVFM27NR Cleaning and Maintenance, Specifications, Service Hints, Technical Service

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FIREPLACE MANUFACTURERS INCORPORATED

UNVENTED NATURAL GAS LOG HEATER

CLEANING AND MAINTENANCE

WARNING: Turn off heater and let cool before cleaning.

CAUTION: You must keep control areas, burner, and circu- lating air passageways of heater clean. Inspect these areas of heater before each use. Have heater inspected yearly by a quali- fied service person. Heater may need more frequent cleaning due to excessive lint from carpeting, pet hair, bedding material, etc.

CLEANING BURNER INJECTOR HOLDER AND PILOT AIR INLET HOLE

The primary air inlet holes allow the proper amount of air to mix with the gas. This provides a clean burning flame. Keep these holes clear of dust, dirt, and lint. Clean these air inlet holes prior to each heating season. Blocked air holes will create soot. We rec- ommend that you clean the unit every 2,500 hours of operation or every three months.

We also recommend that you keep the burner tube and pilot assembly clean and free of dust and dirt. To clean these parts we recommend using compressed air no greater than 30 PSI. Your local computer store, hardware store, or home center may carry compressed air in a can. You can use a vacuum cleaner in the blow position. If using compressed air in a can, please follow the directions on the can. If you don't follow directions on the can, you could damage the pilot assembly.

1.Shut off the unit, including the pilot. Allow the unit to cool for at least thirty minutes.

2.Inspect burner, pilot, and primary air inlet holes on injector holder for dust and dirt (see Figure 26).

3.Blow air through the ports/slots and holes in the burner.

4.Check the injector holder located at the end of the burner tube again. Remove any large particles of dust, dirt, lint, or pet hairs with a soft cloth or vacuum cleaner nozzle.

5.Blow air into the primary air holes on the injector holder.

6.In case any large clumps of dust have now been pushed into the burner repeat steps 3 and 4.

Clean the pilot assembly also. A yellow tip on the pilot flame indicates dust and dirt in the pilot assembly. There is a small pilot air inlet hole about two inches from where the pilot flame comes out of the pilot assembly (see Figure 27). With the unit off, lightly blow air through the air inlet hole. You may blow through a drinking straw if compressed air is not available.

Burner

Injector Holder

(May Be Brass

Tube

or Aluminum

 

Depending on

 

Model)

Primary Air Inlet Holes (Shape of Holes May Vary by Model)

Figure 26 - Injector Holder On Outlet Burner Tube

Ports/Slots

Burner

Tube

Pilot

Assembly

Pilot Air

Inlet

Hole

Figure 27 - Pilot Inlet Air Hole

LOGS

•If you remove logs for cleaning, refer to Installing Logs, page 13, to properly re- place logs.

•Replace log(s) if broken or chipped (dime-sized or larger).

MAIN BURNER

Periodically inspect all burner flame holes with the heater running. All slotted burner flame holes should be open with yellow flame present. All round burner flame holes should be open with a small blue flame present. Some burner flame holes may be- come blocked by debris or rust, with no flame present. If so, turn off heater and let cool. Either remove blockage or replace burner. Blocked burner flame holes will create soot.

SPECIFICATIONS

 

27" Remote Ready

Btu (Variable)

20,000/39,000

Type Gas

Natural Gas Only

Ignition Piezo

Piezo

Pressure Manifold

3.5" W.C.

Inlet Gas Pressure

 

(in. of water)

 

Maximum

10.5"

Minimum*

5"

Shipping Weight

32 lbs.

* For input adjustment

SERVICE HINTS

When Gas Pressure Is Too Low

•pilot will not stay lit

•burners will have delayed ignition

•heater will not produce specified heat

When Gas Quality Is Bad

•pilot will not stay lit

•burners will produce flames and soot

•heater will backfire when lit

You may feel your gas pressure is too low or gas quality is bad. If so, contact your local natural gas supplier.

TECHNICAL

SERVICE

You may have further questions about in- stallation, operation, or troubleshooting.

If so, contact Fireplace Manufacturers Incorporated’s Technical Service Depart- ment at 1-888-427-8322.

You can also visit DESA International’s Technical Service web site at www.desatech.com.

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Contents Millivolt Remote Control Ready Model FVFM27NRWhat to do if YOU Smell GAS Patent PendingSafety Information Product Features Remote Control AccessoriesProduct Identification Local CodesAIR for Combustion and Ventilation Providing Adequate VentilationUnusually Tight Construction Confined and Unconfined SpaceDetermining if You Have a Confined or Unconfined Space AIR for Combustion VentilationDetermining FRESH-AIR Flow for Heater Location Ventilation AIR Ventilation Air From InsideBuilding Ventilation Air From OutdoorsInstallation Check GAS TypeMinimum Wall and Ceiling Clearances see Figure Log Size Side Wall CeilingIf Using Mantel If Not Using MantelMinimum Noncombustible Material Clearances Eration,Determining Minimum Mantel Clearance When Using a Hood Mantel ClearancesFloor Clearances Determining Minimum Mantel ClearanceInstalling Damper Clamp Accessory for Vented Operation Installing Heater Base AssemblyInstallation Items Needed Area of Various Standard Round FluesConnecting to GAS Supply Attaching Flexible Gas Hose to HeaterPressure Testing Gas Supply Piping System Pressure Testing Heater Gas ConnectionsChecking GAS Connections Test Pressures In Excess Of 1/2 PsigInstalling Logs Installing Bottom Log #1Instructions For Your Safety Read Before LightingOperating Heater Optional Remote Operation Manual Lighting ProcedureTo Turn OFF GAS To Appliance Inspecting Burners Pilot Flame PatternBurner Primary AIR Holes Main BurnerTroubleshooting Observed Problem Possible CauseObserved Problem Possible Cause Remedy Maintenance,Top Gas leak. See Warning statement at topCleaning and Maintenance SpecificationsService Hints Technical ServiceWiring Diagram AccessoriesReplacement Parts Illustrated Parts Breakdown FVFM27NRParts List Description QTYWarranty Information Limited Warranty VENT-FREE Natural GAS LOG Heaters

FVFM27NR specifications

Desa FVFM27NR is a modern and innovative product that embodies cutting-edge technology and design aesthetics, making it a standout choice in its category. This versatile device is tailored to meet the demands of consumers who seek both efficiency and performance in their daily activities.

One of the key features of the FVFM27NR is its robust build quality, which ensures durability and longevity. Constructed using high-grade materials, the device is designed to withstand regular use while maintaining a sleek appearance. This attention to detail not only enhances its functionality but also contributes to an appealing visual presence.

The FVFM27NR is equipped with advanced technologies that elevate its performance. With a powerful engine, the device delivers superior results across various applications. The incorporation of smart technology allows users to control and customize settings according to their specific needs, providing an intuitive user experience. Ergonomic design elements further enhance usability, ensuring that the device is comfortable to handle even during extended use.

Energy efficiency is another hallmark of the FVFM27NR. It integrates eco-friendly technologies that minimize power consumption without sacrificing performance. The energy-efficient operation not only reduces utility costs for users but also contributes positively to environmental sustainability.

Along with its efficiency and power, the FVFM27NR features a range of specialized modes that cater to different tasks. This versatility makes it suitable for various environments, whether in a home, office, or outdoor setting. The ability to switch between modes with ease allows for quick adaptation, making it a practical tool for users with diverse requirements.

Additionally, the FVFM27NR is designed with user safety in mind. It incorporates multiple safety features, including automatic shut-off and thermal protection, ensuring peace of mind during operation.

In conclusion, Desa FVFM27NR stands out as a leading option in its market segment, thanks to its combination of robust design, advanced technology, energy efficiency, versatility, and user safety. Whether for professional or personal use, it delivers exceptional value, making it an ideal investment for anyone seeking a reliable and effective device. With its modern features and characteristics, the FVFM27NR is well-positioned to meet contemporary lifestyle needs while ensuring optimal performance and satisfaction.
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