Vermont Casting 3031, 3033 Gas Specifications, Gas Inlet and Manifold Pressures, High Elevations

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Gas Specifications

Vermont Castings UVS27 Vent-Free Gas Heater

Gas Specifications

 

 

 

 

Max.

Min.

 

 

 

 

Input

Input

 

 

 

 

Model

Fuel

Gas Control

BTU/h

BTU/h

UVS27RN

Nat

 

Millivolt

28,000

19,500

UVS27RP

Prop

 

Millivolt

28,000

19,500

UVS27MN

Nat

 

Millivolt

28,000

19,500

UVS27MP

Prop

 

Millivolt

28,000

19,500

 

 

 

 

 

 

Firebox weight / shipping

110 lbs.

 

Gas Inlet and Manifold Pressures

 

 

Natural

LP (Propane)

Inlet Minimum

 

5.5” w.c.

11” w.c.

Inlet Maximum

 

14” w.c.

14” w.c.

Manifold Pressure

 

3.5” w.c.

10” w.c. (MP)

 

 

 

11” w.c. (RP)

 

 

 

 

UVS27R & UVS27M Vent-Free

Certified to:

ANSI Z21.11.2a-2001

Unvented Heaters

The installation of your Vermont Castings stove must conform with local codes, or in the absence of local codes, with the National Fuel Gas Code ANSI

Z223.1 - latest edition. (EXCEPTION: Do not derate this appliance for altitude up to 4,500 feet (1,370m). Maintain the manifold pressure at 3.5” w.c. for Natural Gas and 11.0” w.c. for LP Gas.

This appliance may be installed in an aftermarket* manufactured (mobile) home, where not prohibited by state or local codes.

This appliance is to be used only with the type of gas specified on the rating plate which is attached to the rear panel. This appliance is not convertible for use with other gases.

*Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer.

High Elevations

Input ratings are shown in BTU per hour and are certified without deration from elevations up to 4,500 feet (1,370m) above sea level.

Nuisance outages may occur at altitudes above 4,500 feet (1,370m) if dirt, dust, lint and/or cob- webs are allowed to accumulate on burner and/or ODS pilot. Monthly inspection and cleaning is recommended for altitudes above 4,500 feet (1,370m)

For elevations above 4,500 feet (1,370m), installa- tions must be in accordance with the current ANSI Z223.1 and/or local codes having jurisdic- tion.

WARNING: Improper installation, adjust- ment, alteration, service or maintenance can cause injury or property damage. Refer to this manual for correct installation and operational procedures. For assistance or additional information consult a qualified installer, service agency, or the gas supplier.

Odor During Operation

Neither natural gas nor propane gas give off an odor when burned. The nature of a vent free combustion system, however, is such that odors may occasion- ally be produced during heater operation when impurities exist in the immediate area. Cleaning solutions, paint, solvents, cigarette smoke, candles, adhesives, new carpet or textiles, etc., all can create fumes. These fumes may mix with combustion air and can create odor. Such odors will disappear over time, however the condition can be alleviated by opening a window or otherwise providing additional ventilation to the area.

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20005004

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Contents Do not try to light any appli- ance Homeowner’s InstallationWHATTO DO IF YOU SMELL GAS INSTALLER / CONSUMER SAFETY INFORMATIONTable Of Contents Vermont Castings UVS27 Vent-FreeGas Heater20005004 Installation & Operating Instructions Vermont Castings UVS27 Vent-FreeGas Heater20005004 20005004 Shell DimensionsVermont Castings UVS27 Vent-FreeGas Heater Freestanding StoveHearth Requirements Clearance RequirementsMinimum Clearances to Combustible Materials Vermont Castings UVS27 Vent-FreeGas HeaterUVS27R & UVS27M Vent-Free Certified to Gas SpecificationsGas Inlet and Manifold Pressures ANSI Z21.11.2a-2001 Unvented Heatersand Ventilation Vent Free FeaturesFresh Air Requirements for Combustion Provide For Adequate VentilationW A R N I N G W A R N I N GVermont Castings UVS27 Vent-FreeGas Heater 20005004Unpack the Firebox Assembly ProceduresShell / Firebox Assembly Vermont Castings UVS27 Vent-FreeGas HeaterInstall Optional Fan Kit Vermont Castings UVS27 Vent-FreeGas Heater20005004 Install ON/OFF Switch Vermont Castings UVS27 Vent-FreeGas Heater20005004 Vermont Castings UVS27 Vent-FreeGas Heater Glass & Catalyst InstallationThermostat Connection Optional 20005004Connect the Gas Supply Line Vermont Castings UVS27 Vent-FreeGas Heater20005004 Install Log Set Vermont Castings UVS27 Vent-FreeGas Heater20005004 Complete the Installation Vermont Castings UVS27 Vent-FreeGas Heater20005004 Operation Flame & Temperature AdjustmentFlame Characteristics Your First FireLighting Instructions FOR YOUR SAFETY READ BEFORE LIGHTINGLighting and Operating Instructions To Turn Off Gas To HeaterPOSSIBLE CAUSE TroubleshootingCONDITION Vermont Castings UVS27 Vent-FreeGas HeaterCONDITION Troubleshooting cont’dVermont Castings UVS27 Vent-FreeGas Heater POSSIBLE CAUSECleaning Procedure MaintenanceFirebox Cleaning and Inspection Glass ReplacementRemove the Combustor Module Clean the Combustor ModuleCatalytic Combustor Replace The Combustor ModuleVermont Castings UVS27 Vent-FreeGas Heater ModelsUVS27R, UVS27M Vent Free Gas Heaters 20005004Vermont Castings UVS27 Vent-FreeGas Heater UVS27R, UVS27M Vent Free Gas HeatersModels 3030, 3031, 3032, 3033 continued 20005004Models 3030, 3031, 3032, 3033 continued UVS27R, UVS27M Vent Free Gas HeatersVermont Castings UVS27 Vent-FreeGas Heater Shell Enamel Part Numbers - HearthmountFan Kits Optional Accessories AvailableRemote Controls Glass / Catalyst Kit UVGODCFKIF WARRANTY SERVICE IS NEEDED… LIMITED LIFETIME WARRANTYPRODUCT COVERED BY THIS WARRANTY Vermont Castings UVS27 Vent-FreeGas Heater