Vermont Casting 4085 - 4087 manual Troubleshooting cont’d, Pilot lights but Main Burner does not

Page 18

UVS27 Vent-Free Gas Heater

Troubleshooting cont’d.

 

 

CONDITION

POSSIBLE CAUSE

SOLUTION

Pilot lights but flame goes out when Control Knob is released.

Pilot flame is lifting.

Thermopile

Thermo- couple

ST121a

1.Control Knob not fully depressed or held in long enough.

2.Gas supply line shut-off valve is not fully open.

3.Thermocouple connection is loose at the Control Valve.

4.Pilot flame does not touch the Thermocouple.

This can be caused by:

A)Incorrect gas pressure, and/or

B)other conditions that should be identified only by a qualified service technician.

5.Thermocouple is damaged.

6.Control Valve is damaged.

1.Depress Control Knob fully and hold in for a full 30 seconds.

2.Fully open gas supply line shut- off valve.

3.Inspect and tighten securely.

4.A) Call local gas supplier. Adjust inlet supply pressure to specifica- tion: NG; 5.5” w.c.-14.0”w.c. LP; 11.0” w.c.-14.0”w.c.

B)Call local gas service techni- cian.

5.Call local gas service technician.

6.Call local gas service technician.

Pilot flame is weak - does not touch

Thermocouple.

Correct LP Pilot Flame.

Correct NG Pilot Flame.

Pilot lights but Main Burner does not.

1.Gas supply line shut-off valve is not fully open.

2.Foreign material is blocking Burner ports.

3.Main Burner orifice is clogged.

4.Thermostat or remote switch not activated on JUVS.

5.Bad Thermopile.

1.Fully open gas supply line shut- off valve.

2.Insptect and clear debris away from Burner ports.

3.Call local gas service technician.

4.Set thermostat to higher tem- perature or check remote switch.

5.Call local gas service technician.

Main Burner shuts off and Pilot

1. Insufficient fresh air.

1. Determine that adequate ventila-

flame goes out while in operation.

 

tion exists to provide sufficient

 

 

fresh air. Open a window or pro-

 

 

vide additional ventilation. (See

 

 

Fresh Air Requirements, Pages

 

 

6-7)

 

2. Incorrect inlet supply pressure.

2. Call local gas supplier. Adjust

 

 

inlet supply pressure to specifica-

 

 

tion: NG; 5.5” w.c.-14.0”w.c. LP;

 

 

11.0” w.c.-14.0”w.c.

18

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Contents UVS27R, UVS27M Table Of Contents Installation & Operating Instructions Carbon Monoxide Poisoning MAY Lead to DeathShell Dimensions UVS27 freestanding shell dimensionsHearth Requirements Do not install this heater in a bathroom or bed- roomMinimum Clearances to Combustible Materials Mantel fromHigh Elevations Gas SpecificationsGas Inlet and Manifold Pressures Odor During OperationProvide For Adequate Ventilation Vent Free FeaturesFresh Air Requirements for Combustion Ventilation Unusually Tight ConstructionR N I N G ExampleAssembly Procedures Install Optional Fan KitUnpack the Stove Install ON/OFF Switch Glass & Catalyst InstallationThermostat Connection Optional Remove air shutter, turn upside down and replace Install Log Set Connect the Gas Supply LineAged Logs Complete the Installation Install rear, left and right logsInstall the Top Plate and Grille Operation Flame & Temperature AdjustmentFlame Characteristics Your First FireLighting and Operating Instructions To Turn Off Gas To HeaterWhat to do if YOU Smell GAS Troubleshooting No spark at pilot when Ignitor is operatedIgnitor Electrode sparks, but Pilot does not light Main Burner shuts off and Pilot Troubleshooting cont’dPilot lights but Main Burner does not flame goes out while in operationCleaning Procedure MaintenanceFirebox Cleaning and Inspection Glass ReplacementRemove the Combustor Module Clean the Combustor ModuleCatalytic Combustor Replace the Combustor ModuleUVS27R, UVS27M Vent Free Gas Heaters Description UVS27Classic Fan Kits Optional Accessories AvailableRemote Controls Glass / Catalyst Kit UvgodcfkUVS27 Vent-Free Gas Heater UVS27 Vent-Free Gas Heater Limited Lifetime Warranty CFM Specialty Home Products

4085 - 4087, 4030 - 4036, 4090 - 4092, 4040 - 4046 specifications

Vermont Casting gas fireplaces are renowned for their high-quality construction and elegant designs, making them popular choices among homeowners seeking both functionality and aesthetic appeal. The models 4030, 4036, 4040, 4046, 4085, 4087, 4090, and 4092 represent a range of offerings that showcase the brand’s commitment to craftsmanship and innovation.

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