Desa LMFP33NR(B) User Manual

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WARNING: If the information in this manual is not fol-
lowed exactly, a re or explosion may result causing
property damage, personal injury or loss of life.
— Do not store or use gasoline or other ammable
vapors and liquids in the vicinity of this or any other
appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any
phone in your building.
• Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the re
department.
— Installation and service must be performed by a quali-
ed installer, service agency or the gas supplier.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
UNVENTED (VENT-FREE) GAS FIREPLACE
OWNER’S OPERATION AND INSTALLATION MANUAL
LMFP33NR(B) AND LMFP33PR(B) REMOTE CONTROL
GAS FIREPLACE SySTEMS
Patent Pending
Shown with optional
cabinet mantel and hearth
base accessories.

Desa LMFP33NR(B) Specifications

General

Fuel Type	Natural Gas
Heating Capacity	33, 000 BTU
Material	Steel
Finish	Black
Warranty	1 Year Limited

Summary

Essential Safety and Gas Leak Procedures

Critical Safety Warnings

General safety notices and immediate actions for gas leaks.

Gas Leak Response Protocol

Step-by-step procedure for handling detected gas leaks.

Understanding Safety Information

Installation Hazards and Operation Safety

Risks of improper installation and general safe operation practices.

Specific Product and Chemical Warnings

Key Safety Guidelines

Carbon Monoxide and Gas Safety

Dangers of CO poisoning and essential properties of fuel gases.

Operational Safety Rules

Rules for controls, airflow, clearances, and hot surfaces.

Ventilation Requirements

Space Classification and Airflow Definitions

Determining Fresh Air Flow Needs

Ventilation Solutions

Installation Overview

General Installation Guidelines and Warnings

Built-In Fireplace Installation

Gas Piping Installation

Gas Piping Requirements and Warnings

Essential information on gas line connections, regulators, and safety warnings.

Gas Supply Connections

External Regulator and Pipe Specifications

Gas Connection Fittings and Sediment Traps

Connecting Fireplace to Gas Supply

Flexible Gas Line Connection Procedure

Step-by-step guide for connecting the gas supply.

Gas Connection Testing

Leak Detection and Pressure Testing

Procedures for testing gas connections for leaks.

Final Installation Checks

Pressure Testing and Log Placement

Operating Your Fireplace

Pre-Lighting Safety Checks

Crucial safety steps before lighting the pilot.

Fireplace Lighting Procedure

Step-by-step instructions for igniting the pilot and main burners.

Fireplace Operation Procedures

Pilot Ignition and Burner Operation

Remote Control Functionality

Remote Operation Modes and Settings

Burner Inspection and Flame Patterns

Pilot Flame and Primary Air Holes

Main Burner Flame Pattern

Cleaning and Maintenance

Burner and Pilot Assembly Cleaning

Troubleshooting Ignition Issues

No Spark or Ignition Problems

Diagnosing and fixing ignitor or pilot ignition problems.

Troubleshooting Flame Issues

Pilot Flame Out and Burner Ignition Failures

Addressing pilot or main burner failure to light or stay lit.

Troubleshooting Operational Anomalies

Smoke, Odor, Noise, and Residue

Troubleshooting Odors and Gas Leaks

Unwanted Odors and Fireplace Shutoffs

Identifying and fixing causes of odors and unexpected shutdowns.

Gas Leaks and Odor During Combustion

Diagnosing gas leaks and odors during operation.