Desa VFN24R, VFN30R, VFN18R installation manual See Wiring Diagram

Page 19

OWNER’S MANUAL

TROUBLESHOOTING

Continued

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

One or both burners do not light after ODS/

1.

Inlet gas pressure is too low

1.

Contact local natural gas company

pilot is lit

2.

Burner orifice(s) clogged

2.

Clean burner(s) (see Cleaning and Main-

 

 

 

 

tenance, page 17) or replace burner

 

 

 

 

orifice(s)

 

3.

Mislocated crossover tube

3.

Contact qualified service person

 

4.

Burner orifice(s) diameter is too small

4.

Replace burner orifice(s)

 

5.

Selector switch in OFF position

5.

Put selector switch in ON position

 

6.

Wire disconnected from gas control

6.

See Wiring Diagram, page 21

 

 

 

 

 

Delayed ignition of one or both burners

1.

Manifold pressure is too low

1.

Contact local natural gas company

 

2.

Burner orifice(s) clogged

2.

Clean burner(s) (see Cleaning and Main-

 

 

 

 

tenance, page 17) or replace burner

 

 

 

 

orifice(s)

 

3.

Mislocated crossover tube

3.

Contact qualified service person

 

 

 

 

 

Burner backfiring during combustion

1.

Burner orifice is clogged or damaged

1.

Clean burner (see Cleaning and Mainte-

 

 

 

 

nance, page 17) or replace burner orifice

 

2.

Damaged burner

2.

Replace damaged burner

 

3.

Gas control defective

3.

Replace gas control

 

 

 

 

 

Yellow flame in front burner during burner

1.

Not enough air

1.

Check burner(s) for dirt and debris. If

combustion

 

 

 

found, clean burner(s) (see Cleaning and

 

 

 

 

Maintenance, page 17)

 

2.

Gas control defective

2.

Replace gas control

Slight smoke or odor during initial operation 1. Residues from manufacturing processes and logs curing

1.Problem will stop after a few hours of operation

Moisture/condensation noticed on windows

1.

Not enough combustion/ventilation air

1.

Refer to Air for Combustion and Venti-

 

 

 

 

lation requirements (page 4)

 

 

 

 

 

Heater produces a whistling noise when

1.

Turning control knob to HI position

1.

Turn control knob to LO position and

burners are lit

 

when burners are cold

 

let warm up for a minute

 

2.

Air in gas line

2.

Operate burners until air is removed

 

 

 

 

from line. Have gas line checked by lo-

 

 

 

 

cal natural gas company

 

3.

Air passageways on heater blocked

3.

Observe minimum installation clear-

 

 

 

 

ances (see pages 7 through 9)

 

4.

Dirty or partially clogged burner

4.

Clean burners (see Cleaning and Main-

 

 

orifice(s)

 

tenance, page 17) or replace burner

 

 

 

 

orifice(s)

 

 

 

 

 

White powder residue forming within burner box or on adjacent walls or furniture

1.When heated, vapors from furniture pol- ish, wax, carpet cleaners, etc. turn into white powder residue

1.Turn heater off when using furniture polish, wax, carpet cleaners, or similar products

Remote does not function (GHRC and GHRCT Only)

1.Battery is not installed. Battery power is low

1.Replace 9-volt batteries in receiver and remote control

www.desatech.com

Continued

105072

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Contents What to do if YOU Smell GAS Unvented VENT-FREE Natural GAS LOG HeaterFireplace Manufacturers INC Unvented Natural GAS LOG Heater Safety InformationProduct Identification Local Codes Product FeaturesUnpacking Confined and Unconfined Space AIR for Combustion and VentilationProviding Adequate Ventilation Unusually Tight ConstructionDetermining FRESH-AIR Flow for Heater Location AIR for Combustion VentilationDetermining if You Have a Confined or Unconfined Space Ventilation Air From Outdoors Ventilation AIRVentilation Air From Inside BuildingCheck GAS Type InstallationMinimum Noncombustible Material Clearances If Using MantelDetermining Minimum Mantel Clearance Determining Minimum Mantel Clearance When Using a HoodMantel Clearances Floor ClearancesArea of Various Standard Round Flues Installing Damper Clamp Accessory for Vented OperationInstalling Heater Base Assembly Installation Items NeededGas supply. Follow all local codes Connecting to GAS SupplyPressure Testing Heater Gas Connections Pressure Testing gas Supply Piping systemChecking GAS Connections Installing Front Log #1 Installing LogsOperating Heater For Your Safety Read Before LightingLighting Instructions To Turn OFF GAS to Appliance Manual Lighting ProcedureOptional Remote Operation Pilot Flame Pattern Inspecting BurnersLogs Cleaning and MaintenanceCleaning Burner Injector Holder and Pilot AIR Inlet Hole Front Burner Flame PatternObserved Problem Possible Cause Remedy TroubleshootingSee Wiring Diagram, Gas leak. See Warning statement Service Hints SpecificationsWiring Diagram Replacement PartsVFN18R VFN24R VFN30R Illustrated Parts BreakdownKEY Part Numbers VFN18R VFN24R VFN30R Description QTY Parts ListAccessories 105072 Warranty Information

VFN24R, VFN18R, VFN30R specifications

Desa VFN18R, VFN24R, and VFN30R are a series of innovative heating solutions designed to meet varying heating needs while offering efficiency and reliability. Each model in the VFN range has unique features tailored to residential and commercial applications, contributing to versatile heating solutions.

One of the main characteristics of the VFN series is their impressive heating capacities. The VFN18R model is designed to deliver up to 18,000 BTU/hour, making it suitable for medium-sized spaces. The VFN24R, with its 24,000 BTU/hour output, is ideal for larger areas where more substantial heating is required. Finally, the VFN30R boasts an output of 30,000 BTU/hour, making it a powerful option for substantial heating demands, whether in warehouses, workshops, or expansive living spaces.

These models incorporate advanced technologies to maximize efficiency and performance. Each unit features a high-efficiency heat exchanger designed to produce a more significant amount of heat with lower fuel consumption. This not only translates into cost savings for the user but also reduces environmental impact by minimizing emissions.

In addition, the VFN series is built with a user-friendly interface, making operation straightforward. The units often include programmable thermostats, allowing users to set desired temperatures and schedules, optimizing energy consumption based on specific heating needs. Some models also come with remote control capabilities, offering added convenience.

Safety is a top priority for the VFN models. They come equipped with safety features such as an automatic shut-off system, which activates in case of overheating or malfunction. This contributes to peace of mind, especially in environments with high activity levels or sensitive materials.

The design of the VFN series also enhances their usability and adaptability. These units are compact and can be easily mounted on walls or placed in corners without taking up excessive space. Their aesthetic design allows them to blend seamlessly into different settings, from modern homes to traditional establishments.

In summary, the Desa VFN18R, VFN24R, and VFN30R are versatile heating solutions combining efficiency, safety, and ease of use. With varied heating capacities tailored for different needs and advanced technologies that enhance performance, these models stand out as reliable options for anyone seeking effective heating solutions. Whether for residential comfort or commercial utility, the VFN series delivers on multiple fronts.
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